init

.clang-format

@@ -0,0 +1,191 @@
+---
+Language:        Cpp
+AccessModifierOffset: -4
+AlignAfterOpenBracket: AlwaysBreak
+AlignArrayOfStructures: None
+AlignConsecutiveMacros: None
+AlignConsecutiveAssignments: None
+AlignConsecutiveBitFields: None
+AlignConsecutiveDeclarations: None
+AlignEscapedNewlines: Left
+AlignOperands:   Align
+AlignTrailingComments: false
+AllowAllArgumentsOnNextLine: true
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortEnumsOnASingleLine: true
+AllowShortBlocksOnASingleLine: Never
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: None
+AllowShortLambdasOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: WithoutElse
+AllowShortLoopsOnASingleLine: true
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: Yes
+AttributeMacros:
+  - __capability
+BinPackArguments: false
+BinPackParameters: false
+BraceWrapping:
+  AfterCaseLabel:  false
+  AfterClass:      false
+  AfterControlStatement: Never
+  AfterEnum:       false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  AfterExternBlock: false
+  BeforeCatch:     false
+  BeforeElse:      false
+  BeforeLambdaBody: false
+  BeforeWhile:     false
+  IndentBraces:    false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+BreakBeforeBinaryOperators: None
+BreakBeforeConceptDeclarations: true
+BreakBeforeBraces: Attach
+BreakBeforeInheritanceComma: false
+BreakInheritanceList: BeforeColon
+BreakBeforeTernaryOperators: false
+BreakConstructorInitializersBeforeComma: false
+BreakConstructorInitializers: BeforeComma
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: false
+ColumnLimit:     99
+CommentPragmas:  '^ IWYU pragma:'
+QualifierAlignment: Leave
+CompactNamespaces: false
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DeriveLineEnding: true
+DerivePointerAlignment: false
+DisableFormat:   false
+EmptyLineAfterAccessModifier: Never
+EmptyLineBeforeAccessModifier: LogicalBlock
+ExperimentalAutoDetectBinPacking: false
+PackConstructorInitializers: BinPack
+BasedOnStyle:    ''
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+AllowAllConstructorInitializersOnNextLine: true
+FixNamespaceComments: false
+ForEachMacros:
+  - foreach
+  - Q_FOREACH
+  - BOOST_FOREACH
+IfMacros:
+  - KJ_IF_MAYBE
+IncludeBlocks:   Preserve
+IncludeCategories:
+  - Regex:           '.*'
+    Priority:        1
+    SortPriority:    0
+    CaseSensitive:   false
+  - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
+    Priority:        3
+    SortPriority:    0
+    CaseSensitive:   false
+  - Regex:           '.*'
+    Priority:        1
+    SortPriority:    0
+    CaseSensitive:   false
+IncludeIsMainRegex: '(Test)?$'
+IncludeIsMainSourceRegex: ''
+IndentAccessModifiers: false
+IndentCaseLabels: false
+IndentCaseBlocks: false
+IndentGotoLabels: true
+IndentPPDirectives: None
+IndentExternBlock: AfterExternBlock
+IndentRequires:  false
+IndentWidth:     4
+IndentWrappedFunctionNames: true
+InsertTrailingCommas: None
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
+KeepEmptyLinesAtTheStartOfBlocks: false
+LambdaBodyIndentation: Signature
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBinPackProtocolList: Auto
+ObjCBlockIndentWidth: 4
+ObjCBreakBeforeNestedBlockParam: true
+ObjCSpaceAfterProperty: true
+ObjCSpaceBeforeProtocolList: true
+PenaltyBreakAssignment: 10
+PenaltyBreakBeforeFirstCallParameter: 30
+PenaltyBreakComment: 10
+PenaltyBreakFirstLessLess: 0
+PenaltyBreakOpenParenthesis: 0
+PenaltyBreakString: 10
+PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 100
+PenaltyReturnTypeOnItsOwnLine: 60
+PenaltyIndentedWhitespace: 0
+PointerAlignment: Left
+PPIndentWidth:   -1
+ReferenceAlignment: Pointer
+ReflowComments:  false
+RemoveBracesLLVM: false
+SeparateDefinitionBlocks: Leave
+ShortNamespaceLines: 1
+SortIncludes:    Never
+SortJavaStaticImport: Before
+SortUsingDeclarations: false
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCaseColon: false
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: Never
+SpaceBeforeParensOptions:
+  AfterControlStatements: false
+  AfterForeachMacros: false
+  AfterFunctionDefinitionName: false
+  AfterFunctionDeclarationName: false
+  AfterIfMacros:   false
+  AfterOverloadedOperator: false
+  BeforeNonEmptyParentheses: false
+SpaceAroundPointerQualifiers: Default
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyBlock: false
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  Never
+SpacesInConditionalStatement: false
+SpacesInContainerLiterals: false
+SpacesInCStyleCastParentheses: false
+SpacesInLineCommentPrefix:
+  Minimum:         1
+  Maximum:         -1
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+SpaceBeforeSquareBrackets: false
+BitFieldColonSpacing: Both
+Standard:        c++03
+StatementAttributeLikeMacros:
+  - Q_EMIT
+StatementMacros:
+  - Q_UNUSED
+  - QT_REQUIRE_VERSION
+TabWidth:        4
+UseCRLF:         false
+UseTab:          Never
+WhitespaceSensitiveMacros:
+  - STRINGIZE
+  - PP_STRINGIZE
+  - BOOST_PP_STRINGIZE
+  - NS_SWIFT_NAME
+  - CF_SWIFT_NAME
+...
+

.editorconfig

@@ -0,0 +1,13 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+
+[*.{cpp,h,c,py,sh}]
+indent_style = space
+indent_size = 4
+
+[{Makefile,*.mk}]
+indent_size = tab

.pvsconfig

@@ -0,0 +1,49 @@
+# MLib macros we can't do much about.
+//-V:M_LET:1048,1044
+//-V:M_EACH:1048,1044
+//-V:ARRAY_DEF:760,747,568,776,729,712,654
+//-V:LIST_DEF:760,747,568,712,729,654,776
+//-V:BPTREE_DEF2:779,1086,557,773,512
+//-V:DICT_DEF2:779,524,776,760,1044,1001,729,590,568,747,685
+//-V:ALGO_DEF:1048,747,1044
+//-V:TUPLE_DEF2:524,590,1001,760
+
+# Non-severe malloc/null pointer deref warnings
+//-V::522:2,3
+
+# Warning about headers with copyleft license
+//-V::1042
+
+# Potentially null argument warnings
+//-V:memset:575
+//-V:memcpy:575
+//-V:memcmp:575
+//-V:strlen:575
+//-V:strcpy:575
+//-V:strncpy:575
+//-V:strchr:575
+
+# For loop warning on M_FOREACH
+//-V:for:1044
+
+# Bitwise OR
+//-V:bit:792
+
+# Do not complain about similar code
+//-V::525
+
+# Common embedded development pointer operations
+//-V::566
+//-V::1032
+
+# Warnings about length mismatch
+//-V:property_value_out:666
+
+# Model-related warnings
+//-V:with_view_model:1044,1048
+
+# Functions that always return the same error code
+//-V:picopass_device_decrypt:1048
+
+# Examples
+//V_EXCLUDE_PATH applications/examples/

.pvsoptions

@@ -0,0 +1 @@
+--ignore-ccache -C gccarm --rules-config .pvsconfig -e lib/fatfs -e lib/fnv1a-hash -e lib/FreeRTOS-Kernel -e lib/heatshrink -e lib/libusb_stm32 -e lib/littlefs -e lib/mbedtls -e lib/micro-ecc -e lib/microtar -e lib/mlib -e lib/qrcode -e lib/ST25RFAL002 -e lib/STM32CubeWB -e lib/u8g2 -e lib/nanopb -e */arm-none-eabi/* -e applications/external/dap_link/lib/free-dap

CODE_OF_CONDUCT.md

@@ -0,0 +1,128 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+hello@flipperdevices.com.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior,  harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.

CODING_STYLE.md

@@ -0,0 +1,101 @@
+# Intro
+
+Nice to see you reading this document, we really appreciate it.
+
+As all documents of this kind it's unable to cover everything.
+But it will cover general rules that we are enforcing on PR review.
+
+Also, we already have automatic rules checking and formatting,
+but it got its limitations and this guide is still mandatory.
+
+Some part of this project do have its own naming and coding guides.
+For example: assets. Take a look into `ReadMe.md` in assets folder for more details.
+
+Also, 3rd party libraries are none of our concern.
+
+And yes, this set is not final and we are open to discussion.
+If you want to add/remove/change something here please feel free to open new ticket.
+
+# Inspiration
+
+Our guide is inspired by, but not claiming to be compatible with:
+
+- https://www.kernel.org/doc/html/v4.10/process/coding-style.html
+- https://docs.unrealengine.com/en-US/Programming/Development/CodingStandard
+- https://webkit.org/code-style-guidelines/
+
+# General rules
+
+## Readability and Simplicity first
+
+Code we write is intended to be public.
+Avoid one-liners from hell and keep code complexity under control.
+Try to make code self-explanatory and add comments if needed.
+Leave references to standards that you are implementing.
+Use project wiki to document new/reverse engineered standards.
+
+## Variable and function names must clearly define what it's doing
+
+It's ok if it will be long, but it should clearly state what it's doing, without need to dive into code.
+This also applies to function/method's code.
+Try to avoid one letter variables.
+
+## Encapsulation
+
+Don't expose raw data, provide methods to work with it.
+Almost everything in flipper firmware is built around this concept.
+
+# C coding style
+
+- Tab is 4 spaces
+- Use `fbt format` to reformat source code and check style guide before commit
+
+## Naming
+
+### Type names are PascalCase
+
+Examples:
+
+	FuriHalUsb
+	Gui
+	SubGhzKeystore
+
+
+### Functions are snake_case
+
+	furi_hal_usb_init
+	gui_add_view_port
+	subghz_keystore_read
+
+### File and Package name is a prefix for it's content
+
+This rule makes easier to locate types, functions and sources.
+
+For example:
+
+We have abstraction that we call `SubGhz Keystore`, so there will be:
+file `subghz_keystore.h` we have type `SubGhzKeystore` and function `subghz_keystore_read`.
+
+### File names
+
+- Directories: `^[0-9A-Za-z_]+$`
+- File names: `^[0-9A-Za-z_]+\.[a-z]+$`
+- File extensions: `[ ".h", ".c", ".cpp", ".cxx", ".hpp" ]`
+
+Enforced by linter.
+
+### Standard function/method names
+
+Suffixes:
+
+- `alloc` - allocate and init instance. C style constructor. Returns pointer to instance.
+- `free` - de-init and release instance. C style destructor. Takes pointer to instance.
+
+# C++ coding style
+
+Work In Progress. Use C style guide as a base.
+
+# Python coding style
+
+- Tab is 4 spaces
+- Use [black](https://pypi.org/project/black/) to reformat source code before commit

CONTRIBUTING.md

@@ -0,0 +1,72 @@
+# Welcome to FlipperZero contributing guide <!-- omit in toc -->
+
+Thank you for investing your time in contributing to our project! 
+
+Read our [Code of Conduct](CODE_OF_CONDUCT.md) to keep our community approachable and respectable.
+
+In this guide you will get an overview of the contribution workflow from opening an issue, creating a PR, reviewing, and merging the PR.
+
+## New contributor guide
+
+See the [ReadMe](ReadMe.md) to get an overview of the project. Here are some helpful resources to get you comfortable with open source contribution:
+
+- [Finding ways to contribute to open source on GitHub](https://docs.github.com/en/get-started/exploring-projects-on-github/finding-ways-to-contribute-to-open-source-on-github)
+- [Set up Git](https://docs.github.com/en/get-started/quickstart/set-up-git)
+- [GitHub flow](https://docs.github.com/en/get-started/quickstart/github-flow)
+- [Collaborating with pull requests](https://docs.github.com/en/github/collaborating-with-pull-requests)
+
+## Getting started
+
+Before writing code and creating PR make sure that it aligns with our mission and guidelines:
+
+- All our devices are intended for research and education.
+- PR that contains code intended to commit crimes is not going to be accepted.
+- Your PR must comply with our [Coding Style](CODING_STYLE.md)
+- Your PR must contain code compatible with project [LICENSE](LICENSE).
+- PR will only be merged if it passes CI/CD.
+- PR will only be merged if it passes review by code owner.
+
+Feel free to ask questions in issues if you're not sure.
+
+### Issues
+
+#### Create a new issue
+
+If you found a problem, [search if an issue already exists](https://docs.github.com/en/github/searching-for-information-on-github/searching-on-github/searching-issues-and-pull-requests#search-by-the-title-body-or-comments). If a related issue doesn't exist, you can open a new issue using a relevant [issue form](https://github.com/flipperdevices/flipperzero-firmware/issues/new/choose). 
+
+#### Solve an issue
+
+Scan through our [existing issues](https://github.com/flipperdevices/flipperzero-firmware/issues) to find one that interests you.
+
+### Make Changes
+
+1. Fork the repository.
+- Using GitHub Desktop:
+  - [Getting started with GitHub Desktop](https://docs.github.com/en/desktop/installing-and-configuring-github-desktop/getting-started-with-github-desktop) will guide you through setting up Desktop.
+  - Once Desktop is set up, you can use it to [fork the repo](https://docs.github.com/en/desktop/contributing-and-collaborating-using-github-desktop/cloning-and-forking-repositories-from-github-desktop)!
+
+- Using the command line:
+  - [Fork the repo](https://docs.github.com/en/github/getting-started-with-github/fork-a-repo#fork-an-example-repository) so that you can make your changes without affecting the original project until you're ready to merge them.
+
+2. Install build requirements
+
+3. Create a working branch and start with your changes!
+
+### Commit your update
+
+Commit the changes once you are happy with them. Make sure that code compilation is not broken and passes tests. Check syntax and formatting.
+
+### Pull Request
+
+When you're done making the changes, open a pull request, often referred to as a PR. 
+- Fill out the "Ready for review" template, so we can review your PR. This template helps reviewers understand your changes and the purpose of your pull request. 
+- Don't forget to [link PR to issue](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue) if you are solving one.
+- Enable the checkbox to [allow maintainer edits](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/allowing-changes-to-a-pull-request-branch-created-from-a-fork) so the branch can be updated for a merge.
+Once you submit your PR, a Docs team member will review your proposal. We may ask questions or request for additional information.
+- We may ask for changes to be made before a PR can be merged, either using [suggested changes](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/incorporating-feedback-in-your-pull-request) or pull request comments. You can apply suggested changes directly through the UI. You can make any other changes in your fork, then commit them to your branch.
+- As you update your PR and apply changes, mark each conversation as [resolved](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/commenting-on-a-pull-request#resolving-conversations).
+- If you run into any merge issues, checkout this [git tutorial](https://lab.github.com/githubtraining/managing-merge-conflicts) to help you resolve merge conflicts and other issues.
+
+### Your PR is merged!
+
+Congratulations :tada::tada: The FlipperDevices team thanks you :sparkles:.

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
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+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
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+
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+    You should have received a copy of the GNU General Public License
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+
+Also add information on how to contact you by electronic and paper mail.
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+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
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+
+The hypothetical commands `show w' and `show c' should show the appropriate
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+
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+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

ReadMe.md

@@ -0,0 +1,115 @@
+<picture>
+    <source media="(prefers-color-scheme: dark)" srcset="/.github/assets/dark_theme_banner.png">
+    <source media="(prefers-color-scheme: light)" srcset="/.github/assets/light_theme_banner.png">
+    <img
+        alt="A pixel art of a Dophin with text: Flipper Zero Official Repo"
+        src="/.github/assets/light_theme_banner.png">
+</picture>
+
+# Flipper Zero Firmware
+
+- [Flipper Zero Official Website](https://flipperzero.one). A simple way to explain to your friends what Flipper Zero can do.
+- [Flipper Zero Firmware Update](https://update.flipperzero.one). Improvements for your dolphin: latest firmware releases, upgrade tools for PC and mobile devices.
+- [User Documentation](https://docs.flipperzero.one). Learn more about your dolphin: specs, usage guides, and anything you want to ask.
+
+# Contributing
+
+Our main goal is to build a healthy and sustainable community around Flipper, so we're open to any new ideas and contributions. We also have some rules and taboos here, so please read this page and our [Code of Conduct](/CODE_OF_CONDUCT.md) carefully.
+
+## I need help
+
+The best place to search for answers is our [User Documentation](https://docs.flipperzero.one). If you can't find the answer there, check our [Discord Server](https://flipp.dev/discord) or our [Forum](https://forum.flipperzero.one/).
+
+## I want to report an issue
+
+If you've found an issue and want to report it, please check our [Issues](https://github.com/flipperdevices/flipperzero-firmware/issues) page. Make sure the description contains information about the firmware version you're using, your platform, and a clear explanation of the steps to reproduce the issue.
+
+## I want to contribute code
+
+Before opening a PR, please confirm that your changes must be contained in the firmware. Many ideas can easily be implemented as external applications and published in the Flipper Application Catalog (coming soon). If you are unsure, reach out to us on the [Discord Server](https://flipp.dev/discord) or the [Issues](https://github.com/flipperdevices/flipperzero-firmware/issues) page, and we'll help you find the right place for your code.
+
+Also, please read our [Contribution Guide](/CONTRIBUTING.md) and our [Coding Style](/CODING_STYLE.md), and make sure your code is compatible with our [Project License](/LICENSE).
+
+Finally, open a [Pull Request](https://github.com/flipperdevices/flipperzero-firmware/pulls) and make sure that CI/CD statuses are all green.
+
+# Development
+
+Flipper Zero Firmware is written in C, with some bits and pieces written in C++ and armv7m assembly languages. An intermediate level of C knowledge is recommended for comfortable programming. C, C++, and armv7m assembly languages are supported for Flipper applications.
+
+## Requirements
+
+Supported development platforms:
+
+- Windows 10+ with PowerShell and Git (x86_64)
+- macOS 12+ with Command Line tools (x86_64, arm64)
+- Ubuntu 20.04+ with build-essential and Git (x86_64)
+
+Supported in-circuit debuggers (optional but highly recommended):
+
+- [Flipper Zero Wi-Fi Development Board](https://shop.flipperzero.one/products/wifi-devboard)
+- ST-Link
+- J-Link
+
+Flipper Build System will take care of all the other dependencies.
+
+## Cloning source code
+
+Make sure you have enough space and clone the source code:
+
+```shell
+git clone --recursive https://github.com/flipperdevices/flipperzero-firmware.git
+```
+
+## Building
+
+Build firmware using Flipper Build Tool:
+
+```shell
+./fbt
+```
+
+## Flashing firmware using an in-circuit debugger
+
+Connect your in-circuit debugger to your Flipper and flash firmware using Flipper Build Tool:
+
+```shell
+./fbt flash
+```
+
+## Flashing firmware using USB
+
+Make sure your Flipper is on, and your firmware is functioning. Connect your Flipper with a USB cable and flash firmware using Flipper Build Tool:
+
+```shell
+./fbt flash_usb
+```
+
+## Documentation
+
+- [Flipper Build Tool](/documentation/fbt.md) - building, flashing, and debugging Flipper software
+- [Applications](/documentation/AppsOnSDCard.md), [Application Manifest](/documentation/AppManifests.md) - developing, building, deploying, and debugging Flipper applications
+- [Hardware combos and Un-bricking](/documentation/KeyCombo.md) - recovering your Flipper from the most nasty situations
+- [Flipper File Formats](/documentation/file_formats) - everything about how Flipper stores your data and how you can work with it
+- [Universal Remotes](/documentation/UniversalRemotes.md) - contributing your infrared remote to the universal remote database
+- [Firmware Roadmap](/documentation/RoadMap.md)
+- And much more in the [documentation](/documentation) folder
+
+# Project structure
+
+- `applications`    - applications and services used in firmware
+- `assets`          - assets used by applications and services
+- `furi`            - Furi Core: OS-level primitives and helpers
+- `debug`           - debug tool: GDB plugins, an SVD file, etc.
+- `documentation`   - documentation generation system configs and input files
+- `firmware`        - firmware source code
+- `lib`             - our and 3rd party libraries, drivers, etc.
+- `scripts`         - supplementary scripts and python libraries home
+
+Also, see `ReadMe.md` files inside those directories for further details.
+
+# Links
+
+- Discord: [flipp.dev/discord](https://flipp.dev/discord)
+- Website: [flipperzero.one](https://flipperzero.one)
+- Forum: [forum.flipperzero.one](https://forum.flipperzero.one/)
+- Kickstarter: [kickstarter.com](https://www.kickstarter.com/projects/flipper-devices/flipper-zero-tamagochi-for-hackers)

SConstruct

@@ -0,0 +1,337 @@
+#
+# Main Flipper Build System entry point
+#
+# This file is evaluated by scons (the build system) every time fbt is invoked.
+# Scons constructs all referenced environments & their targets' dependency
+# trees on startup. So, to keep startup time as low as possible, we're hiding
+# construction of certain targets behind command-line options.
+
+import os
+from fbt.util import path_as_posix
+
+DefaultEnvironment(tools=[])
+
+EnsurePythonVersion(3, 8)
+
+# Progress(["OwO\r", "owo\r", "uwu\r", "owo\r"], interval=15)
+
+# This environment is created only for loading options & validating file/dir existence
+fbt_variables = SConscript("site_scons/commandline.scons")
+cmd_environment = Environment(
+    toolpath=["#/scripts/fbt_tools"],
+    tools=[
+        ("fbt_help", {"vars": fbt_variables}),
+    ],
+    variables=fbt_variables,
+)
+
+# Building basic environment - tools, utility methods, cross-compilation
+# settings, gcc flags for Cortex-M4, basic builders and more
+coreenv = SConscript(
+    "site_scons/environ.scons",
+    exports={"VAR_ENV": cmd_environment},
+    toolpath=["#/scripts/fbt_tools"],
+)
+SConscript("site_scons/cc.scons", exports={"ENV": coreenv})
+
+# Create a separate "dist" environment and add construction envs to it
+distenv = coreenv.Clone(
+    tools=[
+        "fbt_dist",
+        "fbt_debugopts",
+        "openocd",
+        "blackmagic",
+        "jflash",
+    ],
+    ENV=os.environ,
+    UPDATE_BUNDLE_DIR="dist/${DIST_DIR}/f${TARGET_HW}-update-${DIST_SUFFIX}",
+)
+
+firmware_env = distenv.AddFwProject(
+    base_env=coreenv,
+    fw_type="firmware",
+    fw_env_key="FW_ENV",
+)
+
+# If enabled, initialize updater-related targets
+if GetOption("fullenv") or any(
+    filter(lambda target: "updater" in target or "flash_usb" in target, BUILD_TARGETS)
+):
+    updater_env = distenv.AddFwProject(
+        base_env=coreenv,
+        fw_type="updater",
+        fw_env_key="UPD_ENV",
+    )
+
+    # Target for self-update package
+    dist_basic_arguments = [
+        "--bundlever",
+        '"${UPDATE_VERSION_STRING}"',
+    ]
+    dist_radio_arguments = [
+        "--radio",
+        '"${ROOT_DIR.abspath}/${COPRO_STACK_BIN_DIR}/${COPRO_STACK_BIN}"',
+        "--radiotype",
+        "${COPRO_STACK_TYPE}",
+        "${COPRO_DISCLAIMER}",
+        "--obdata",
+        '"${ROOT_DIR.abspath}/${COPRO_OB_DATA}"',
+    ]
+    dist_resource_arguments = [
+        "-r",
+        '"${ROOT_DIR.abspath}/assets/resources"',
+    ]
+    dist_splash_arguments = (
+        [
+            "--splash",
+            distenv.subst("assets/slideshow/$UPDATE_SPLASH"),
+        ]
+        if distenv["UPDATE_SPLASH"]
+        else []
+    )
+
+    selfupdate_dist = distenv.DistCommand(
+        "updater_package",
+        (distenv["DIST_DEPENDS"], firmware_env["FW_RESOURCES"]),
+        DIST_EXTRA=[
+            *dist_basic_arguments,
+            *dist_radio_arguments,
+            *dist_resource_arguments,
+            *dist_splash_arguments,
+        ],
+    )
+
+    selfupdate_min_dist = distenv.DistCommand(
+        "updater_minpackage",
+        distenv["DIST_DEPENDS"],
+        DIST_EXTRA=dist_basic_arguments,
+    )
+
+    # Updater debug
+    distenv.PhonyTarget(
+        "updater_debug",
+        "${GDBPYCOM}",
+        source=updater_env["FW_ELF"],
+        GDBREMOTE="${OPENOCD_GDB_PIPE}",
+    )
+
+    distenv.PhonyTarget(
+        "updater_blackmagic",
+        "${GDBPYCOM}",
+        source=updater_env["FW_ELF"],
+        GDBOPTS=distenv.subst("$GDBOPTS_BLACKMAGIC"),
+        GDBREMOTE="${BLACKMAGIC_ADDR}",
+    )
+
+    # Installation over USB & CLI
+    usb_update_package = distenv.AddUsbFlashTarget(
+        "#build/usbinstall.flag", (firmware_env["FW_RESOURCES"], selfupdate_dist)
+    )
+    distenv.Alias("flash_usb_full", usb_update_package)
+
+    usb_minupdate_package = distenv.AddUsbFlashTarget(
+        "#build/minusbinstall.flag", (selfupdate_min_dist,)
+    )
+    distenv.Alias("flash_usb", usb_minupdate_package)
+
+
+# Target for copying & renaming binaries to dist folder
+basic_dist = distenv.DistCommand("fw_dist", distenv["DIST_DEPENDS"])
+distenv.Default(basic_dist)
+
+dist_dir_name = distenv.GetProjetDirName()
+dist_dir = distenv.Dir(f"#/dist/{dist_dir_name}")
+external_apps_artifacts = firmware_env["FW_EXTAPPS"]
+external_app_list = external_apps_artifacts.application_map.values()
+
+fap_dist = [
+    distenv.Install(
+        dist_dir.Dir("debug_elf"),
+        list(app_artifact.debug for app_artifact in external_app_list),
+    ),
+    *(
+        distenv.Install(
+            dist_dir.File(dist_entry[1]).dir,
+            app_artifact.compact,
+        )
+        for app_artifact in external_app_list
+        for dist_entry in app_artifact.dist_entries
+    ),
+]
+Depends(
+    fap_dist,
+    list(app_artifact.validator for app_artifact in external_app_list),
+)
+Alias("fap_dist", fap_dist)
+# distenv.Default(fap_dist)
+
+distenv.Depends(firmware_env["FW_RESOURCES"], external_apps_artifacts.resources_dist)
+
+# Copy all faps to device
+
+fap_deploy = distenv.PhonyTarget(
+    "fap_deploy",
+    "${PYTHON3} ${ROOT_DIR}/scripts/storage.py send ${SOURCE} /ext/apps",
+    source=Dir("#/assets/resources/apps"),
+)
+
+
+# Target for bundling core2 package for qFlipper
+copro_dist = distenv.CoproBuilder(
+    "#/build/core2_firmware.tgz",
+    [],
+)
+distenv.AlwaysBuild(copro_dist)
+distenv.Alias("copro_dist", copro_dist)
+
+firmware_flash = distenv.AddOpenOCDFlashTarget(firmware_env)
+distenv.Alias("flash", firmware_flash)
+
+firmware_jflash = distenv.AddJFlashTarget(firmware_env)
+distenv.Alias("jflash", firmware_jflash)
+
+firmware_bm_flash = distenv.PhonyTarget(
+    "flash_blackmagic",
+    "$GDB $GDBOPTS $SOURCES $GDBFLASH",
+    source=firmware_env["FW_ELF"],
+    GDBOPTS="${GDBOPTS_BASE} ${GDBOPTS_BLACKMAGIC}",
+    GDBREMOTE="${BLACKMAGIC_ADDR}",
+    GDBFLASH=[
+        "-ex",
+        "load",
+        "-ex",
+        "quit",
+    ],
+)
+
+gdb_backtrace_all_threads = distenv.PhonyTarget(
+    "gdb_trace_all",
+    "$GDB $GDBOPTS $SOURCES $GDBFLASH",
+    source=firmware_env["FW_ELF"],
+    GDBOPTS="${GDBOPTS_BASE}",
+    GDBREMOTE="${OPENOCD_GDB_PIPE}",
+    GDBFLASH=[
+        "-ex",
+        "thread apply all bt",
+        "-ex",
+        "quit",
+    ],
+)
+
+# Debugging firmware
+firmware_debug = distenv.PhonyTarget(
+    "debug",
+    "${GDBPYCOM}",
+    source=firmware_env["FW_ELF"],
+    GDBOPTS="${GDBOPTS_BASE}",
+    GDBREMOTE="${OPENOCD_GDB_PIPE}",
+    FBT_FAP_DEBUG_ELF_ROOT=path_as_posix(firmware_env.subst("$FBT_FAP_DEBUG_ELF_ROOT")),
+)
+distenv.Depends(firmware_debug, firmware_flash)
+
+distenv.PhonyTarget(
+    "blackmagic",
+    "${GDBPYCOM}",
+    source=firmware_env["FW_ELF"],
+    GDBOPTS="${GDBOPTS_BASE} ${GDBOPTS_BLACKMAGIC}",
+    GDBREMOTE="${BLACKMAGIC_ADDR}",
+    FBT_FAP_DEBUG_ELF_ROOT=path_as_posix(firmware_env.subst("$FBT_FAP_DEBUG_ELF_ROOT")),
+)
+
+# Debug alien elf
+distenv.PhonyTarget(
+    "debug_other",
+    "${GDBPYCOM}",
+    GDBOPTS="${GDBOPTS_BASE}",
+    GDBREMOTE="${OPENOCD_GDB_PIPE}",
+    GDBPYOPTS='-ex "source ${FBT_DEBUG_DIR}/PyCortexMDebug/PyCortexMDebug.py" ',
+)
+
+distenv.PhonyTarget(
+    "debug_other_blackmagic",
+    "${GDBPYCOM}",
+    GDBOPTS="${GDBOPTS_BASE}  ${GDBOPTS_BLACKMAGIC}",
+    GDBREMOTE="$${BLACKMAGIC_ADDR}",
+)
+
+
+# Just start OpenOCD
+distenv.PhonyTarget(
+    "openocd",
+    "${OPENOCDCOM}",
+)
+
+# Linter
+distenv.PhonyTarget(
+    "lint",
+    "${PYTHON3} ${FBT_SCRIPT_DIR}/lint.py check ${LINT_SOURCES}",
+    LINT_SOURCES=[n.srcnode() for n in firmware_env["LINT_SOURCES"]],
+)
+
+distenv.PhonyTarget(
+    "format",
+    "${PYTHON3} ${FBT_SCRIPT_DIR}/lint.py format ${LINT_SOURCES}",
+    LINT_SOURCES=[n.srcnode() for n in firmware_env["LINT_SOURCES"]],
+)
+
+# PY_LINT_SOURCES contains recursively-built modules' SConscript files + application manifests
+# Here we add additional Python files residing in repo root
+firmware_env.Append(
+    PY_LINT_SOURCES=[
+        # Py code folders
+        "site_scons",
+        "scripts",
+        # Extra files
+        "SConstruct",
+        "firmware.scons",
+        "fbt_options.py",
+    ]
+)
+
+
+black_commandline = "@${PYTHON3} -m black ${PY_BLACK_ARGS} ${PY_LINT_SOURCES}"
+black_base_args = ["--include", '"\\.scons|\\.py|SConscript|SConstruct"']
+
+distenv.PhonyTarget(
+    "lint_py",
+    black_commandline,
+    PY_BLACK_ARGS=[
+        "--check",
+        "--diff",
+        *black_base_args,
+    ],
+    PY_LINT_SOURCES=firmware_env["PY_LINT_SOURCES"],
+)
+
+distenv.PhonyTarget(
+    "format_py",
+    black_commandline,
+    PY_BLACK_ARGS=black_base_args,
+    PY_LINT_SOURCES=firmware_env["PY_LINT_SOURCES"],
+)
+
+# Start Flipper CLI via PySerial's miniterm
+distenv.PhonyTarget("cli", "${PYTHON3} ${FBT_SCRIPT_DIR}/serial_cli.py")
+
+
+# Find blackmagic probe
+distenv.PhonyTarget(
+    "get_blackmagic",
+    "@echo $( ${BLACKMAGIC_ADDR} $)",
+)
+
+
+# Find STLink probe ids
+distenv.PhonyTarget(
+    "get_stlink",
+    distenv.Action(
+        lambda **kw: distenv.GetDevices(),
+        None,
+    ),
+)
+
+# Prepare vscode environment
+vscode_dist = distenv.Install("#.vscode", distenv.Glob("#.vscode/example/*"))
+distenv.Precious(vscode_dist)
+distenv.NoClean(vscode_dist)
+distenv.Alias("vscode_dist", vscode_dist)

applications/ReadMe.md

@@ -0,0 +1,94 @@
+# Structure
+
+## debug 
+
+Applications for factory testing the Flipper.
+
+- `accessor`            - Wiegand server 
+- `battery_test_app`    - Battery debug app
+- `blink_test`          - LED blinker   
+- `bt_debug_app`        - BT test app. Requires full BT stack installed
+- `display_test`        - Various display tests & tweaks
+- `file_browser_test`   - Test UI for file picker
+- `keypad_test`         - Keypad test
+- `lfrfid_debug`        - LF RFID debug tool
+- `text_box_test`       - UI tests
+- `uart_echo`           - UART mode test 
+- `unit_tests`          - Unit tests
+- `usb_mouse`           - USB HID test
+- `usb_test`            - Other USB tests
+- `vibro_test`          - Vibro test
+
+
+## main
+
+Applications for main Flipper menu.
+
+- `archive`             - Archive and file manager 
+- `bad_usb`             - Bad USB application
+- `fap_loader`          - External applications loader
+- `gpio`                - GPIO application: includes USART bridge and GPIO control
+- `ibutton`             - iButton application, onewire keys and more
+- `infrared`            - Infrared application, controls your IR devices
+- `lfrfid`              - LF RFID application
+- `nfc`                 - NFC application, HF rfid, EMV and etc
+- `subghz`              - SubGhz application, 433 fobs and etc
+- `u2f`                 - U2F Application
+
+
+## External
+
+External applications deployed to SD Card
+
+- `clock`               - Clock application
+- `dap_link`            - DAP Link OnChip debugger
+- `hid_app`             - USB/BT Remote controller
+- `music_player`        - Music player app (demo)
+- `nfc_magic`           - NFC MFC Magic card application
+- `picopass`            - Picopass reader / writer
+- `signal_generator`    - Signal generator app: PWM and clock generator
+- `snake_game`          - Snake game application
+- `spi_mem_manager`     - SPI Memory reader / flasher
+- `weather_station`     - SubGHz weather station
+
+## services
+
+Background services providing system APIs to applications.
+
+- `applications.h`      - Firmware application list header
+
+- `bt`                  - BLE service and application
+- `cli`                 - Console service and API
+- `crypto`              - Crypto cli tools
+- `desktop`             - Desktop service
+- `dialogs`             - Dialogs service: GUI Dialogs for your app
+- `dolphin`             - Dolphin service and supplementary apps
+- `gui`                 - GUI service and API
+- `input`               - Input service
+- `loader`              - Application loader service
+- `notification`        - Notification service 
+- `power`               - Power service
+- `rpc`                 - RPC service and API
+- `storage`             - Storage service, internal + sdcard
+
+
+## settings
+
+Small applications providing configuration for basic firmware and its services.
+
+- `about`               - Small About application that shows flipper info
+- `bt_settings_app`     - Bluetooth options
+- `desktop_settings`    - Desktop configuration
+- `dolphin_passport`    - Dolphin passport app
+- `notification_settings` - LCD brightness, sound volume, etc configuration
+- `power_settings_app`  - Basic power options
+- `storage_settings`    - Storage settings app
+- `system`              - System settings
+
+
+## system
+
+Utility apps not visible in other menus.
+
+- `storage_move_to_sd`  - Data migration tool for internal storage
+- `updater`             - Update service & application

applications/debug/accessor/accessor.cpp

@@ -0,0 +1,11 @@
+#include "accessor_app.h"
+
+// app enter function
+extern "C" int32_t accessor_app(void* p) {
+    UNUSED(p);
+    AccessorApp* app = new AccessorApp();
+    app->run();
+    delete app;
+
+    return 255;
+}

applications/debug/accessor/accessor_app.cpp

@@ -0,0 +1,141 @@
+#include "accessor_app.h"
+#include <furi.h>
+#include <furi_hal.h>
+#include <stdarg.h>
+
+void AccessorApp::run(void) {
+    AccessorEvent event;
+    bool consumed;
+    bool exit = false;
+
+    wiegand.begin();
+    onewire_host_start(onewire_host);
+
+    scenes[current_scene]->on_enter(this);
+
+    while(!exit) {
+        view.receive_event(&event);
+
+        consumed = scenes[current_scene]->on_event(this, &event);
+
+        if(!consumed) {
+            if(event.type == AccessorEvent::Type::Back) {
+                exit = switch_to_previous_scene();
+            }
+        }
+    };
+
+    scenes[current_scene]->on_exit(this);
+
+    wiegand.end();
+    onewire_host_stop(onewire_host);
+}
+
+AccessorApp::AccessorApp()
+    : text_store{0} {
+    notification = static_cast<NotificationApp*>(furi_record_open(RECORD_NOTIFICATION));
+    onewire_host = onewire_host_alloc(&gpio_ibutton);
+    furi_hal_power_enable_otg();
+}
+
+AccessorApp::~AccessorApp() {
+    furi_hal_power_disable_otg();
+    furi_record_close(RECORD_NOTIFICATION);
+    onewire_host_free(onewire_host);
+}
+
+AccessorAppViewManager* AccessorApp::get_view_manager() {
+    return &view;
+}
+
+void AccessorApp::switch_to_next_scene(Scene next_scene) {
+    previous_scenes_list.push_front(current_scene);
+
+    if(next_scene != Scene::Exit) {
+        scenes[current_scene]->on_exit(this);
+        current_scene = next_scene;
+        scenes[current_scene]->on_enter(this);
+    }
+}
+
+void AccessorApp::search_and_switch_to_previous_scene(std::initializer_list<Scene> scenes_list) {
+    Scene previous_scene = Scene::Start;
+    bool scene_found = false;
+
+    while(!scene_found) {
+        previous_scene = get_previous_scene();
+        for(Scene element : scenes_list) {
+            if(previous_scene == element || previous_scene == Scene::Start) {
+                scene_found = true;
+                break;
+            }
+        }
+    }
+
+    scenes[current_scene]->on_exit(this);
+    current_scene = previous_scene;
+    scenes[current_scene]->on_enter(this);
+}
+
+bool AccessorApp::switch_to_previous_scene(uint8_t count) {
+    Scene previous_scene = Scene::Start;
+
+    for(uint8_t i = 0; i < count; i++) {
+        previous_scene = get_previous_scene();
+        if(previous_scene == Scene::Exit) break;
+    }
+
+    if(previous_scene == Scene::Exit) {
+        return true;
+    } else {
+        scenes[current_scene]->on_exit(this);
+        current_scene = previous_scene;
+        scenes[current_scene]->on_enter(this);
+        return false;
+    }
+}
+
+AccessorApp::Scene AccessorApp::get_previous_scene() {
+    Scene scene = previous_scenes_list.front();
+    previous_scenes_list.pop_front();
+    return scene;
+}
+
+/***************************** NOTIFY *******************************/
+
+void AccessorApp::notify_green_blink() {
+    notification_message(notification, &sequence_blink_green_10);
+}
+
+void AccessorApp::notify_success() {
+    notification_message(notification, &sequence_success);
+}
+
+/*************************** TEXT STORE *****************************/
+
+char* AccessorApp::get_text_store() {
+    return text_store;
+}
+
+uint8_t AccessorApp::get_text_store_size() {
+    return text_store_size;
+}
+
+void AccessorApp::set_text_store(const char* text...) {
+    va_list args;
+    va_start(args, text);
+
+    vsnprintf(text_store, text_store_size, text, args);
+
+    va_end(args);
+}
+
+/*************************** APP RESOURCES *****************************/
+
+WIEGAND* AccessorApp::get_wiegand() {
+    return &wiegand;
+}
+
+OneWireHost* AccessorApp::get_one_wire() {
+    return onewire_host;
+}

applications/debug/accessor/accessor_app.h

@@ -0,0 +1,54 @@
+#pragma once
+#include <map>
+#include <list>
+#include "accessor_view_manager.h"
+#include "scene/accessor_scene_start.h"
+#include "helpers/wiegand.h"
+#include <one_wire/one_wire_host.h>
+#include <notification/notification_messages.h>
+
+class AccessorApp {
+public:
+    void run(void);
+
+    AccessorApp();
+    ~AccessorApp();
+
+    enum class Scene : uint8_t {
+        Exit,
+        Start,
+    };
+
+    AccessorAppViewManager* get_view_manager();
+    void switch_to_next_scene(Scene index);
+    void search_and_switch_to_previous_scene(std::initializer_list<Scene> scenes_list);
+    bool switch_to_previous_scene(uint8_t count = 1);
+    Scene get_previous_scene();
+
+    void notify_green_blink();
+    void notify_success();
+
+    char* get_text_store();
+    uint8_t get_text_store_size();
+    void set_text_store(const char* text...);
+
+    WIEGAND* get_wiegand();
+    OneWireHost* get_one_wire();
+
+private:
+    std::list<Scene> previous_scenes_list = {Scene::Exit};
+    Scene current_scene = Scene::Start;
+    AccessorAppViewManager view;
+
+    std::map<Scene, AccessorScene*> scenes = {
+        {Scene::Start, new AccessorSceneStart()},
+    };
+
+    static const uint8_t text_store_size = 128;
+    char text_store[text_store_size + 1];
+
+    WIEGAND wiegand;
+    OneWireHost* onewire_host;
+
+    NotificationApp* notification;
+};

applications/debug/accessor/accessor_event.h

@@ -0,0 +1,19 @@
+#pragma once
+#include <stdint.h>
+
+class AccessorEvent {
+public:
+    // events enum
+    enum class Type : uint8_t {
+        Tick,
+        Back,
+    };
+
+    // payload
+    union {
+        uint32_t menu_index;
+    } payload;
+
+    // event type
+    Type type;
+};

applications/debug/accessor/accessor_view_manager.cpp

@@ -0,0 +1,80 @@
+#include "accessor_view_manager.h"
+#include "accessor_event.h"
+#include <callback-connector.h>
+
+AccessorAppViewManager::AccessorAppViewManager() {
+    event_queue = furi_message_queue_alloc(10, sizeof(AccessorEvent));
+
+    view_dispatcher = view_dispatcher_alloc();
+    auto callback = cbc::obtain_connector(this, &AccessorAppViewManager::previous_view_callback);
+
+    // allocate views
+    submenu = submenu_alloc();
+    add_view(ViewType::Submenu, submenu_get_view(submenu));
+
+    popup = popup_alloc();
+    add_view(ViewType::Popup, popup_get_view(popup));
+
+    gui = static_cast<Gui*>(furi_record_open(RECORD_GUI));
+    view_dispatcher_attach_to_gui(view_dispatcher, gui, ViewDispatcherTypeFullscreen);
+
+    // set previous view callback for all views
+    view_set_previous_callback(submenu_get_view(submenu), callback);
+    view_set_previous_callback(popup_get_view(popup), callback);
+}
+
+AccessorAppViewManager::~AccessorAppViewManager() {
+    // remove views
+    view_dispatcher_remove_view(
+        view_dispatcher, static_cast<uint32_t>(AccessorAppViewManager::ViewType::Submenu));
+    view_dispatcher_remove_view(
+        view_dispatcher, static_cast<uint32_t>(AccessorAppViewManager::ViewType::Popup));
+
+    // free view modules
+    furi_record_close(RECORD_GUI);
+    submenu_free(submenu);
+    popup_free(popup);
+
+    // free dispatcher
+    view_dispatcher_free(view_dispatcher);
+
+    // free event queue
+    furi_message_queue_free(event_queue);
+}
+
+void AccessorAppViewManager::switch_to(ViewType type) {
+    view_dispatcher_switch_to_view(view_dispatcher, static_cast<uint32_t>(type));
+}
+
+Submenu* AccessorAppViewManager::get_submenu() {
+    return submenu;
+}
+
+Popup* AccessorAppViewManager::get_popup() {
+    return popup;
+}
+
+void AccessorAppViewManager::receive_event(AccessorEvent* event) {
+    if(furi_message_queue_get(event_queue, event, 100) != FuriStatusOk) {
+        event->type = AccessorEvent::Type::Tick;
+    }
+}
+
+void AccessorAppViewManager::send_event(AccessorEvent* event) {
+    FuriStatus result = furi_message_queue_put(event_queue, event, 0);
+    furi_check(result == FuriStatusOk);
+}
+
+uint32_t AccessorAppViewManager::previous_view_callback(void*) {
+    if(event_queue != NULL) {
+        AccessorEvent event;
+        event.type = AccessorEvent::Type::Back;
+        send_event(&event);
+    }
+
+    return VIEW_IGNORE;
+}
+
+void AccessorAppViewManager::add_view(ViewType view_type, View* view) {
+    view_dispatcher_add_view(view_dispatcher, static_cast<uint32_t>(view_type), view);
+}

applications/debug/accessor/accessor_view_manager.h

@@ -0,0 +1,39 @@
+#pragma once
+#include <furi.h>
+#include <gui/view_dispatcher.h>
+#include <gui/modules/submenu.h>
+#include <gui/modules/popup.h>
+#include "accessor_event.h"
+
+class AccessorAppViewManager {
+public:
+    enum class ViewType : uint8_t {
+        Submenu,
+        Popup,
+        Tune,
+    };
+
+    FuriMessageQueue* event_queue;
+
+    AccessorAppViewManager();
+    ~AccessorAppViewManager();
+
+    void switch_to(ViewType type);
+
+    void receive_event(AccessorEvent* event);
+    void send_event(AccessorEvent* event);
+
+    Submenu* get_submenu();
+    Popup* get_popup();
+
+private:
+    ViewDispatcher* view_dispatcher;
+    Gui* gui;
+
+    uint32_t previous_view_callback(void* context);
+    void add_view(ViewType view_type, View* view);
+
+    // view elements
+    Submenu* submenu;
+    Popup* popup;
+};

applications/debug/accessor/application.fam

@@ -0,0 +1,12 @@
+App(
+    appid="accessor",
+    name="Accessor",
+    apptype=FlipperAppType.DEBUG,
+    targets=["f7"],
+    entry_point="accessor_app",
+    cdefines=["APP_ACCESSOR"],
+    requires=["gui"],
+    stack_size=4 * 1024,
+    order=40,
+    fap_category="Debug",
+)

applications/debug/accessor/helpers/wiegand.cpp

@@ -0,0 +1,221 @@
+#include "wiegand.h"
+#include <furi.h>
+#include <furi_hal.h>
+
+volatile unsigned long WIEGAND::_cardTempHigh = 0;
+volatile unsigned long WIEGAND::_cardTemp = 0;
+volatile unsigned long WIEGAND::_lastWiegand = 0;
+unsigned long WIEGAND::_code = 0;
+unsigned long WIEGAND::_codeHigh = 0;
+volatile int WIEGAND::_bitCount = 0;
+int WIEGAND::_wiegandType = 0;
+
+constexpr uint32_t clocks_in_ms = 64 * 1000;
+const GpioPin* const pinD0 = &gpio_ext_pa4;
+const GpioPin* const pinD1 = &gpio_ext_pa7;
+
+WIEGAND::WIEGAND() {
+}
+
+unsigned long WIEGAND::getCode() {
+    return _code;
+}
+
+unsigned long WIEGAND::getCodeHigh() {
+    return _codeHigh;
+}
+
+int WIEGAND::getWiegandType() {
+    return _wiegandType;
+}
+
+bool WIEGAND::available() {
+    bool ret;
+    FURI_CRITICAL_ENTER();
+    ret = DoWiegandConversion();
+    FURI_CRITICAL_EXIT();
+    return ret;
+}
+
+static void input_isr_d0(void* _ctx) {
+    WIEGAND* _this = static_cast<WIEGAND*>(_ctx);
+    _this->ReadD0();
+}
+
+static void input_isr_d1(void* _ctx) {
+    WIEGAND* _this = static_cast<WIEGAND*>(_ctx);
+    _this->ReadD1();
+}
+
+void WIEGAND::begin() {
+    _lastWiegand = 0;
+    _cardTempHigh = 0;
+    _cardTemp = 0;
+    _code = 0;
+    _wiegandType = 0;
+    _bitCount = 0;
+
+    furi_hal_gpio_init_simple(pinD0, GpioModeInterruptFall); // Set D0 pin as input
+    furi_hal_gpio_init_simple(pinD1, GpioModeInterruptFall); // Set D1 pin as input
+
+    furi_hal_gpio_add_int_callback(pinD0, input_isr_d0, this);
+    furi_hal_gpio_add_int_callback(pinD1, input_isr_d1, this);
+}
+
+void WIEGAND::end() {
+    furi_hal_gpio_remove_int_callback(pinD0);
+    furi_hal_gpio_remove_int_callback(pinD1);
+
+    furi_hal_gpio_init_simple(pinD0, GpioModeAnalog);
+    furi_hal_gpio_init_simple(pinD1, GpioModeAnalog);
+}
+
+void WIEGAND::ReadD0() {
+    _bitCount++; // Increment bit count for Interrupt connected to D0
+    if(_bitCount > 31) // If bit count more than 31, process high bits
+    {
+        _cardTempHigh |= ((0x80000000 & _cardTemp) >> 31); //	shift value to high bits
+        _cardTempHigh <<= 1;
+        _cardTemp <<= 1;
+    } else {
+        _cardTemp <<= 1; // D0 represent binary 0, so just left shift card data
+    }
+    _lastWiegand = DWT->CYCCNT; // Keep track of last wiegand bit received
+}
+
+void WIEGAND::ReadD1() {
+    _bitCount++; // Increment bit count for Interrupt connected to D1
+    if(_bitCount > 31) // If bit count more than 31, process high bits
+    {
+        _cardTempHigh |= ((0x80000000 & _cardTemp) >> 31); // shift value to high bits
+        _cardTempHigh <<= 1;
+        _cardTemp |= 1;
+        _cardTemp <<= 1;
+    } else {
+        _cardTemp |= 1; // D1 represent binary 1, so OR card data with 1 then
+        _cardTemp <<= 1; // left shift card data
+    }
+    _lastWiegand = DWT->CYCCNT; // Keep track of last wiegand bit received
+}
+
+unsigned long WIEGAND::GetCardId(
+    volatile unsigned long* codehigh,
+    volatile unsigned long* codelow,
+    char bitlength) {
+    if(bitlength == 26) // EM tag
+        return (*codelow & 0x1FFFFFE) >> 1;
+
+    if(bitlength == 24) return (*codelow & 0x7FFFFE) >> 1;
+
+    if(bitlength == 34) // Mifare
+    {
+        *codehigh = *codehigh & 0x03; // only need the 2 LSB of the codehigh
+        *codehigh <<= 30; // shift 2 LSB to MSB
+        *codelow >>= 1;
+        return *codehigh | *codelow;
+    }
+
+    if(bitlength == 32) {
+        return (*codelow & 0x7FFFFFFE) >> 1;
+    }
+
+    return *codelow; // EM tag or Mifare without parity bits
+}
+
+char translateEnterEscapeKeyPress(char originalKeyPress) {
+    switch(originalKeyPress) {
+    case 0x0b: // 11 or * key
+        return 0x0d; // 13 or ASCII ENTER
+
+    case 0x0a: // 10 or # key
+        return 0x1b; // 27 or ASCII ESCAPE
+
+    default:
+        return originalKeyPress;
+    }
+}
+
+bool WIEGAND::DoWiegandConversion() {
+    unsigned long cardID;
+    unsigned long sysTick = DWT->CYCCNT;
+
+    if((sysTick - _lastWiegand) >
+       (25 * clocks_in_ms)) // if no more signal coming through after 25ms
+    {
+        if((_bitCount == 24) || (_bitCount == 26) || (_bitCount == 32) || (_bitCount == 34) ||
+           (_bitCount == 37) || (_bitCount == 40) || (_bitCount == 8) ||
+           (_bitCount ==
+            4)) // bitCount for keypress=4 or 8, Wiegand 26=24 or 26, Wiegand 34=32 or 34
+        {
+            _codeHigh = 0;
+            // shift right 1 bit to get back the real value - interrupt done 1 left shift in advance
+            _cardTemp >>= 1;
+            // bit count more than 32 bits, shift high bits right to make adjustment
+            if(_bitCount > 32) _cardTempHigh >>= 1;
+
+            if(_bitCount == 8) // keypress wiegand with integrity
+            {
+                // 8-bit Wiegand keyboard data, high nibble is the "NOT" of low nibble
+                // eg if key 1 pressed, data=E1 in binary 11100001 , high nibble=1110 , low nibble = 0001
+                char highNibble = (_cardTemp & 0xf0) >> 4;
+                char lowNibble = (_cardTemp & 0x0f);
+                _wiegandType = _bitCount;
+                _bitCount = 0;
+                _cardTemp = 0;
+                _cardTempHigh = 0;
+
+                if(lowNibble ==
+                   (~highNibble & 0x0f)) // check if low nibble matches the "NOT" of high nibble.
+                {
+                    _code = (int)translateEnterEscapeKeyPress(lowNibble);
+                    return true;
+                } else {
+                    _lastWiegand = sysTick;
+                    return false;
+                }
+
+                // TODO: Handle validation failure case!
+            } else if(4 == _bitCount) {
+                // 4-bit Wiegand codes have no data integrity check so we just
+                // read the LOW nibble.
+                _code = (int)translateEnterEscapeKeyPress(_cardTemp & 0x0000000F);
+
+                _wiegandType = _bitCount;
+                _bitCount = 0;
+                _cardTemp = 0;
+                _cardTempHigh = 0;
+
+                return true;
+            } else if(40 == _bitCount) {
+                _cardTempHigh >>= 1;
+
+                _code = _cardTemp;
+                _codeHigh = _cardTempHigh;
+
+                _wiegandType = _bitCount;
+                _bitCount = 0;
+                _cardTemp = 0;
+                _cardTempHigh = 0;
+
+                return true;
+            } else {
+                // wiegand 26 or wiegand 34
+                cardID = GetCardId(&_cardTempHigh, &_cardTemp, _bitCount);
+                _wiegandType = _bitCount;
+                _bitCount = 0;
+                _cardTemp = 0;
+                _cardTempHigh = 0;
+                _code = cardID;
+                return true;
+            }
+        } else {
+            // well time over 25 ms and bitCount !=8 , !=26, !=34 , must be noise or nothing then.
+            _lastWiegand = sysTick;
+            _bitCount = 0;
+            _cardTemp = 0;
+            _cardTempHigh = 0;
+            return false;
+        }
+    } else
+        return false;
+}

applications/debug/accessor/helpers/wiegand.h

@@ -0,0 +1,30 @@
+#pragma once
+
+class WIEGAND {
+public:
+    WIEGAND();
+    void begin();
+    void end();
+    bool available();
+    unsigned long getCode();
+    unsigned long getCodeHigh();
+    int getWiegandType();
+
+    static void ReadD0();
+    static void ReadD1();
+
+private:
+    static bool DoWiegandConversion();
+    static unsigned long GetCardId(
+        volatile unsigned long* codehigh,
+        volatile unsigned long* codelow,
+        char bitlength);
+
+    static volatile unsigned long _cardTempHigh;
+    static volatile unsigned long _cardTemp;
+    static volatile unsigned long _lastWiegand;
+    static volatile int _bitCount;
+    static int _wiegandType;
+    static unsigned long _code;
+    static unsigned long _codeHigh;
+};

applications/debug/accessor/scene/accessor_scene_generic.h

@@ -0,0 +1,13 @@
+#pragma once
+#include "../accessor_app.h"
+
+class AccessorApp;
+
+class AccessorScene {
+public:
+    virtual void on_enter(AccessorApp* app) = 0;
+    virtual bool on_event(AccessorApp* app, AccessorEvent* event) = 0;
+    virtual void on_exit(AccessorApp* app) = 0;
+
+private:
+};

applications/debug/accessor/scene/accessor_scene_start.cpp

@@ -0,0 +1,88 @@
+#include "../accessor_app.h"
+#include "../accessor_view_manager.h"
+#include "../accessor_event.h"
+#include <callback-connector.h>
+#include "accessor_scene_start.h"
+
+void AccessorSceneStart::on_enter(AccessorApp* app) {
+    AccessorAppViewManager* view_manager = app->get_view_manager();
+    Popup* popup = view_manager->get_popup();
+
+    popup_set_header(popup, "Accessor App", 64, 16, AlignCenter, AlignBottom);
+    app->set_text_store("[??????]");
+    popup_set_text(popup, app->get_text_store(), 64, 22, AlignCenter, AlignTop);
+
+    view_manager->switch_to(AccessorAppViewManager::ViewType::Popup);
+}
+
+bool AccessorSceneStart::on_event(AccessorApp* app, AccessorEvent* event) {
+    bool consumed = false;
+
+    if(event->type == AccessorEvent::Type::Tick) {
+        WIEGAND* wiegand = app->get_wiegand();
+        Popup* popup = app->get_view_manager()->get_popup();
+        OneWireHost* onewire_host = app->get_one_wire();
+
+        uint8_t data[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+        uint8_t type = 0;
+
+        if(wiegand->available()) {
+            type = wiegand->getWiegandType();
+
+            for(uint8_t i = 0; i < 4; i++) {
+                data[i] = wiegand->getCode() >> (i * 8);
+            }
+
+            for(uint8_t i = 4; i < 8; i++) {
+                data[i] = wiegand->getCodeHigh() >> ((i - 4) * 8);
+            }
+        } else {
+            FURI_CRITICAL_ENTER();
+            if(onewire_host_reset(onewire_host)) {
+                type = 255;
+                onewire_host_write(onewire_host, 0x33);
+                for(uint8_t i = 0; i < 8; i++) {
+                    data[i] = onewire_host_read(onewire_host);
+                }
+
+                for(uint8_t i = 0; i < 7; i++) {
+                    data[i] = data[i + 1];
+                }
+            }
+            FURI_CRITICAL_EXIT();
+        }
+
+        if(type > 0) {
+            if(type == 255) {
+                app->set_text_store(
+                    "[%02X %02X %02X %02X %02X %02X DS]",
+                    data[5],
+                    data[4],
+                    data[3],
+                    data[2],
+                    data[1],
+                    data[0]);
+            } else {
+                app->set_text_store(
+                    "[%02X %02X %02X %02X %02X %02X W%u]",
+                    data[5],
+                    data[4],
+                    data[3],
+                    data[2],
+                    data[1],
+                    data[0],
+                    type);
+            }
+            popup_set_text(popup, app->get_text_store(), 64, 22, AlignCenter, AlignTop);
+            app->notify_success();
+        }
+    }
+
+    return consumed;
+}
+
+void AccessorSceneStart::on_exit(AccessorApp* app) {
+    Popup* popup = app->get_view_manager()->get_popup();
+    popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
+    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
+}

applications/debug/accessor/scene/accessor_scene_start.h

@@ -0,0 +1,9 @@
+#pragma once
+#include "accessor_scene_generic.h"
+
+class AccessorSceneStart : public AccessorScene {
+public:
+    void on_enter(AccessorApp* app) final;
+    bool on_event(AccessorApp* app, AccessorEvent* event) final;
+    void on_exit(AccessorApp* app) final;
+};

applications/debug/application.fam

@@ -0,0 +1,16 @@
+App(
+    appid="debug_apps",
+    name="Basic debug apps bundle",
+    apptype=FlipperAppType.METAPACKAGE,
+    provides=[
+        "blink_test",
+        "vibro_test",
+        "keypad_test",
+        "usb_test",
+        "usb_mouse",
+        "uart_echo",
+        "display_test",
+        "text_box_test",
+        "file_browser_test",
+    ],
+)

applications/debug/battery_test_app/application.fam

@@ -0,0 +1,15 @@
+App(
+    appid="battery_test",
+    name="Battery Test",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="battery_test_app",
+    cdefines=["APP_BATTERY_TEST"],
+    requires=[
+        "gui",
+        "power",
+    ],
+    stack_size=1 * 1024,
+    order=130,
+    fap_category="Debug",
+    fap_libs=["assets"],
+)

applications/debug/battery_test_app/battery_test_app.c

@@ -0,0 +1,101 @@
+#include "battery_test_app.h"
+
+#include <notification/notification_messages.h>
+
+void battery_test_dialog_callback(DialogExResult result, void* context) {
+    furi_assert(context);
+    BatteryTestApp* app = context;
+    if(result == DialogExResultLeft) {
+        view_dispatcher_stop(app->view_dispatcher);
+    } else if(result == DialogExResultRight) {
+        view_dispatcher_switch_to_view(app->view_dispatcher, BatteryTestAppViewBatteryInfo);
+    }
+}
+
+uint32_t battery_test_exit_confirm_view() {
+    return BatteryTestAppViewExitDialog;
+}
+
+static void battery_test_battery_info_update_model(void* context) {
+    BatteryTestApp* app = context;
+    power_get_info(app->power, &app->info);
+    BatteryInfoModel battery_info_data = {
+        .vbus_voltage = app->info.voltage_vbus,
+        .gauge_voltage = app->info.voltage_gauge,
+        .gauge_current = app->info.current_gauge,
+        .gauge_temperature = app->info.temperature_gauge,
+        .charge = app->info.charge,
+        .health = app->info.health,
+    };
+    battery_info_set_data(app->battery_info, &battery_info_data);
+    notification_message(app->notifications, &sequence_display_backlight_on);
+}
+
+BatteryTestApp* battery_test_alloc() {
+    BatteryTestApp* app = malloc(sizeof(BatteryTestApp));
+
+    // Records
+    app->gui = furi_record_open(RECORD_GUI);
+    app->power = furi_record_open(RECORD_POWER);
+    app->notifications = furi_record_open(RECORD_NOTIFICATION);
+
+    // View dispatcher
+    app->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(app->view_dispatcher);
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+    view_dispatcher_set_tick_event_callback(
+        app->view_dispatcher, battery_test_battery_info_update_model, 500);
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    // Views
+    app->battery_info = battery_info_alloc();
+    view_set_previous_callback(
+        battery_info_get_view(app->battery_info), battery_test_exit_confirm_view);
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        BatteryTestAppViewBatteryInfo,
+        battery_info_get_view(app->battery_info));
+
+    app->dialog = dialog_ex_alloc();
+    dialog_ex_set_header(app->dialog, "Close Battery Test?", 64, 12, AlignCenter, AlignTop);
+    dialog_ex_set_left_button_text(app->dialog, "Exit");
+    dialog_ex_set_right_button_text(app->dialog, "Stay");
+    dialog_ex_set_result_callback(app->dialog, battery_test_dialog_callback);
+    dialog_ex_set_context(app->dialog, app);
+
+    view_dispatcher_add_view(
+        app->view_dispatcher, BatteryTestAppViewExitDialog, dialog_ex_get_view(app->dialog));
+
+    battery_test_battery_info_update_model(app);
+    view_dispatcher_switch_to_view(app->view_dispatcher, BatteryTestAppViewBatteryInfo);
+    return app;
+}
+
+void battery_test_free(BatteryTestApp* app) {
+    furi_assert(app);
+
+    // Views
+    view_dispatcher_remove_view(app->view_dispatcher, BatteryTestAppViewBatteryInfo);
+    battery_info_free(app->battery_info);
+    view_dispatcher_remove_view(app->view_dispatcher, BatteryTestAppViewExitDialog);
+    dialog_ex_free(app->dialog);
+    // View dispatcher
+    view_dispatcher_free(app->view_dispatcher);
+    // Records
+    furi_record_close(RECORD_POWER);
+    furi_record_close(RECORD_GUI);
+    furi_record_close(RECORD_NOTIFICATION);
+    free(app);
+}
+
+int32_t battery_test_app(void* p) {
+    UNUSED(p);
+    BatteryTestApp* app = battery_test_alloc();
+    // Disable battery low level notification
+    power_enable_low_battery_level_notification(app->power, false);
+
+    view_dispatcher_run(app->view_dispatcher);
+    power_enable_low_battery_level_notification(app->power, true);
+    battery_test_free(app);
+    return 0;
+}

applications/debug/battery_test_app/battery_test_app.h

@@ -0,0 +1,25 @@
+#include <furi.h>
+#include <power/power_service/power.h>
+#include <gui/gui.h>
+#include <gui/view.h>
+#include <gui/view_dispatcher.h>
+#include <notification/notification.h>
+
+#include <gui/modules/dialog_ex.h>
+// FIXME
+#include "../settings/power_settings_app/views/battery_info.h"
+
+typedef struct {
+    Power* power;
+    Gui* gui;
+    NotificationApp* notifications;
+    ViewDispatcher* view_dispatcher;
+    BatteryInfo* battery_info;
+    DialogEx* dialog;
+    PowerInfo info;
+} BatteryTestApp;
+
+typedef enum {
+    BatteryTestAppViewBatteryInfo,
+    BatteryTestAppViewExitDialog,
+} BatteryTestAppView;

applications/debug/battery_test_app/views/battery_info.c

@@ -0,0 +1,148 @@
+#include "battery_info.h"
+#include <furi.h>
+#include <gui/elements.h>
+#include <assets_icons.h>
+
+#define LOW_CHARGE_THRESHOLD 10
+#define HIGH_DRAIN_CURRENT_THRESHOLD 100
+
+struct BatteryInfo {
+    View* view;
+};
+
+static void draw_stat(Canvas* canvas, int x, int y, const Icon* icon, char* val) {
+    canvas_draw_frame(canvas, x - 7, y + 7, 30, 13);
+    canvas_draw_icon(canvas, x, y, icon);
+    canvas_set_color(canvas, ColorWhite);
+    canvas_draw_box(canvas, x - 4, y + 16, 24, 6);
+    canvas_set_color(canvas, ColorBlack);
+    canvas_draw_str_aligned(canvas, x + 8, y + 22, AlignCenter, AlignBottom, val);
+};
+
+static void draw_battery(Canvas* canvas, BatteryInfoModel* data, int x, int y) {
+    char emote[20] = {};
+    char header[20] = {};
+    char value[20] = {};
+
+    int32_t drain_current = data->gauge_current * (-1000);
+    uint32_t charge_current = data->gauge_current * 1000;
+
+    // Draw battery
+    canvas_draw_icon(canvas, x, y, &I_BatteryBody_52x28);
+    if(charge_current > 0) {
+        canvas_draw_icon(canvas, x + 16, y + 7, &I_FaceCharging_29x14);
+    } else if(drain_current > HIGH_DRAIN_CURRENT_THRESHOLD) {
+        canvas_draw_icon(canvas, x + 16, y + 7, &I_FaceConfused_29x14);
+    } else if(data->charge < LOW_CHARGE_THRESHOLD) {
+        canvas_draw_icon(canvas, x + 16, y + 7, &I_FaceNopower_29x14);
+    } else {
+        canvas_draw_icon(canvas, x + 16, y + 7, &I_FaceNormal_29x14);
+    }
+
+    // Draw bubble
+    elements_bubble(canvas, 53, 0, 71, 39);
+
+    // Set text
+    if(charge_current > 0) {
+        snprintf(emote, sizeof(emote), "%s", "Yummy!");
+        snprintf(header, sizeof(header), "%s", "Charging at");
+        snprintf(
+            value,
+            sizeof(value),
+            "%lu.%luV   %lumA",
+            (uint32_t)(data->vbus_voltage),
+            (uint32_t)(data->vbus_voltage * 10) % 10,
+            charge_current);
+    } else if(drain_current > 0) {
+        snprintf(
+            emote,
+            sizeof(emote),
+            "%s",
+            drain_current > HIGH_DRAIN_CURRENT_THRESHOLD ? "Oh no!" : "Om-nom-nom!");
+        snprintf(header, sizeof(header), "%s", "Consumption is");
+        snprintf(
+            value,
+            sizeof(value),
+            "%ld %s",
+            drain_current,
+            drain_current > HIGH_DRAIN_CURRENT_THRESHOLD ? "mA!" : "mA");
+    } else if(drain_current != 0) {
+        snprintf(header, 20, "...");
+    } else if(data->charging_voltage < 4.2) {
+        // Non-default battery charging limit, mention it
+        snprintf(emote, sizeof(emote), "Charged!");
+        snprintf(header, sizeof(header), "Limited to");
+        snprintf(
+            value,
+            sizeof(value),
+            "%lu.%luV",
+            (uint32_t)(data->charging_voltage),
+            (uint32_t)(data->charging_voltage * 10) % 10);
+    } else {
+        snprintf(header, sizeof(header), "Charged!");
+    }
+
+    canvas_draw_str_aligned(canvas, 92, y + 3, AlignCenter, AlignCenter, emote);
+    canvas_draw_str_aligned(canvas, 92, y + 15, AlignCenter, AlignCenter, header);
+    canvas_draw_str_aligned(canvas, 92, y + 27, AlignCenter, AlignCenter, value);
+};
+
+static void battery_info_draw_callback(Canvas* canvas, void* context) {
+    furi_assert(context);
+    BatteryInfoModel* model = context;
+
+    canvas_clear(canvas);
+    canvas_set_color(canvas, ColorBlack);
+    draw_battery(canvas, model, 0, 5);
+
+    char batt_level[10];
+    char temperature[10];
+    char voltage[10];
+    char health[10];
+
+    snprintf(batt_level, sizeof(batt_level), "%lu%%", (uint32_t)model->charge);
+    snprintf(temperature, sizeof(temperature), "%lu C", (uint32_t)model->gauge_temperature);
+    snprintf(
+        voltage,
+        sizeof(voltage),
+        "%lu.%01lu V",
+        (uint32_t)model->gauge_voltage,
+        (uint32_t)(model->gauge_voltage * 10) % 10UL);
+    snprintf(health, sizeof(health), "%d%%", model->health);
+
+    draw_stat(canvas, 8, 42, &I_Battery_16x16, batt_level);
+    draw_stat(canvas, 40, 42, &I_Temperature_16x16, temperature);
+    draw_stat(canvas, 72, 42, &I_Voltage_16x16, voltage);
+    draw_stat(canvas, 104, 42, &I_Health_16x16, health);
+}
+
+BatteryInfo* battery_info_alloc() {
+    BatteryInfo* battery_info = malloc(sizeof(BatteryInfo));
+    battery_info->view = view_alloc();
+    view_set_context(battery_info->view, battery_info);
+    view_allocate_model(battery_info->view, ViewModelTypeLocking, sizeof(BatteryInfoModel));
+    view_set_draw_callback(battery_info->view, battery_info_draw_callback);
+
+    return battery_info;
+}
+
+void battery_info_free(BatteryInfo* battery_info) {
+    furi_assert(battery_info);
+    view_free(battery_info->view);
+    free(battery_info);
+}
+
+View* battery_info_get_view(BatteryInfo* battery_info) {
+    furi_assert(battery_info);
+    return battery_info->view;
+}
+
+void battery_info_set_data(BatteryInfo* battery_info, BatteryInfoModel* data) {
+    furi_assert(battery_info);
+    furi_assert(data);
+    with_view_model(
+        battery_info->view,
+        BatteryInfoModel * model,
+        { memcpy(model, data, sizeof(BatteryInfoModel)); },
+        true);
+}

applications/debug/battery_test_app/views/battery_info.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <gui/view.h>
+
+typedef struct BatteryInfo BatteryInfo;
+
+typedef struct {
+    float vbus_voltage;
+    float gauge_voltage;
+    float gauge_current;
+    float gauge_temperature;
+    float charging_voltage;
+    uint8_t charge;
+    uint8_t health;
+} BatteryInfoModel;
+
+BatteryInfo* battery_info_alloc();
+
+void battery_info_free(BatteryInfo* battery_info);
+
+View* battery_info_get_view(BatteryInfo* battery_info);
+
+void battery_info_set_data(BatteryInfo* battery_info, BatteryInfoModel* data);

applications/debug/blink_test/application.fam

@@ -0,0 +1,11 @@
+App(
+    appid="blink_test",
+    name="Blink Test",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="blink_test_app",
+    cdefines=["APP_BLINK"],
+    requires=["gui"],
+    stack_size=1 * 1024,
+    order=10,
+    fap_category="Debug",
+)

applications/debug/blink_test/blink_test.c

@@ -0,0 +1,126 @@
+#include <core/common_defines.h>
+#include <furi.h>
+#include <furi_hal.h>
+
+#include <gui/gui.h>
+#include <input/input.h>
+
+#include <notification/notification_messages.h>
+
+typedef enum {
+    BlinkEventTypeTick,
+    BlinkEventTypeInput,
+} BlinkEventType;
+
+typedef struct {
+    BlinkEventType type;
+    InputEvent input;
+} BlinkEvent;
+
+static const NotificationSequence blink_test_sequence_hw_blink_start_red = {
+    &message_blink_start_10,
+    &message_blink_set_color_red,
+    &message_do_not_reset,
+    NULL,
+};
+
+static const NotificationSequence blink_test_sequence_hw_blink_green = {
+    &message_blink_set_color_green,
+    NULL,
+};
+
+static const NotificationSequence blink_test_sequence_hw_blink_blue = {
+    &message_blink_set_color_blue,
+    NULL,
+};
+
+static const NotificationSequence blink_test_sequence_hw_blink_stop = {
+    &message_blink_stop,
+    NULL,
+};
+
+static const NotificationSequence* blink_test_colors[] = {
+    &sequence_blink_red_100,
+    &sequence_blink_green_100,
+    &sequence_blink_blue_100,
+    &sequence_blink_yellow_100,
+    &sequence_blink_cyan_100,
+    &sequence_blink_magenta_100,
+    &sequence_blink_white_100,
+    &blink_test_sequence_hw_blink_start_red,
+    &blink_test_sequence_hw_blink_green,
+    &blink_test_sequence_hw_blink_blue,
+    &blink_test_sequence_hw_blink_stop,
+};
+
+static void blink_test_update(void* ctx) {
+    furi_assert(ctx);
+    FuriMessageQueue* event_queue = ctx;
+    BlinkEvent event = {.type = BlinkEventTypeTick};
+    // It's OK to loose this event if system overloaded
+    furi_message_queue_put(event_queue, &event, 0);
+}
+
+static void blink_test_draw_callback(Canvas* canvas, void* ctx) {
+    UNUSED(ctx);
+    canvas_clear(canvas);
+    canvas_set_font(canvas, FontPrimary);
+    canvas_draw_str(canvas, 2, 10, "Blink application");
+}
+
+static void blink_test_input_callback(InputEvent* input_event, void* ctx) {
+    furi_assert(ctx);
+    FuriMessageQueue* event_queue = ctx;
+
+    BlinkEvent event = {.type = BlinkEventTypeInput, .input = *input_event};
+    furi_message_queue_put(event_queue, &event, FuriWaitForever);
+}
+
+int32_t blink_test_app(void* p) {
+    UNUSED(p);
+    FuriMessageQueue* event_queue = furi_message_queue_alloc(8, sizeof(BlinkEvent));
+
+    // Configure view port
+    ViewPort* view_port = view_port_alloc();
+    view_port_draw_callback_set(view_port, blink_test_draw_callback, NULL);
+    view_port_input_callback_set(view_port, blink_test_input_callback, event_queue);
+    FuriTimer* timer = furi_timer_alloc(blink_test_update, FuriTimerTypePeriodic, event_queue);
+    furi_timer_start(timer, furi_kernel_get_tick_frequency());
+
+    // Register view port in GUI
+    Gui* gui = furi_record_open(RECORD_GUI);
+    gui_add_view_port(gui, view_port, GuiLayerFullscreen);
+
+    NotificationApp* notifications = furi_record_open(RECORD_NOTIFICATION);
+
+    uint8_t state = 0;
+    BlinkEvent event;
+
+    while(1) {
+        furi_check(furi_message_queue_get(event_queue, &event, FuriWaitForever) == FuriStatusOk);
+        if(event.type == BlinkEventTypeInput) {
+            if((event.input.type == InputTypeShort) && (event.input.key == InputKeyBack)) {
+                break;
+            }
+        } else {
+            notification_message(notifications, blink_test_colors[state]);
+            state++;
+            if(state >= COUNT_OF(blink_test_colors)) {
+                state = 0;
+            }
+        }
+    }
+
+    notification_message(notifications, &blink_test_sequence_hw_blink_stop);
+
+    furi_timer_free(timer);
+
+    gui_remove_view_port(gui, view_port);
+    view_port_free(view_port);
+    furi_message_queue_free(event_queue);
+
+    furi_record_close(RECORD_NOTIFICATION);
+    furi_record_close(RECORD_GUI);
+
+    return 0;
+}

applications/debug/bt_debug_app/application.fam

@@ -0,0 +1,18 @@
+App(
+    appid="bt_debug",
+    name="Bluetooth Debug",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="bt_debug_app",
+    cdefines=["SRV_BT"],
+    requires=[
+        "bt",
+        "gui",
+        "dialogs",
+    ],
+    provides=[
+        "bt_debug",
+    ],
+    stack_size=1 * 1024,
+    order=110,
+    fap_category="Debug",
+)

applications/debug/bt_debug_app/bt_debug_app.c

@@ -0,0 +1,118 @@
+#include "bt_debug_app.h"
+#include <furi_hal_bt.h>
+
+#define TAG "BtDebugApp"
+
+enum BtDebugSubmenuIndex {
+    BtDebugSubmenuIndexCarrierTest,
+    BtDebugSubmenuIndexPacketTest,
+};
+
+void bt_debug_submenu_callback(void* context, uint32_t index) {
+    furi_assert(context);
+    BtDebugApp* app = context;
+    if(index == BtDebugSubmenuIndexCarrierTest) {
+        view_dispatcher_switch_to_view(app->view_dispatcher, BtDebugAppViewCarrierTest);
+    } else if(index == BtDebugSubmenuIndexPacketTest) {
+        view_dispatcher_switch_to_view(app->view_dispatcher, BtDebugAppViewPacketTest);
+    }
+}
+
+uint32_t bt_debug_exit(void* context) {
+    UNUSED(context);
+    return VIEW_NONE;
+}
+
+uint32_t bt_debug_start_view(void* context) {
+    UNUSED(context);
+    return BtDebugAppViewSubmenu;
+}
+
+BtDebugApp* bt_debug_app_alloc() {
+    BtDebugApp* app = malloc(sizeof(BtDebugApp));
+
+    // Gui
+    app->gui = furi_record_open(RECORD_GUI);
+
+    // View dispatcher
+    app->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(app->view_dispatcher);
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    // Views
+    app->submenu = submenu_alloc();
+    submenu_add_item(
+        app->submenu,
+        "Carrier test",
+        BtDebugSubmenuIndexCarrierTest,
+        bt_debug_submenu_callback,
+        app);
+    submenu_add_item(
+        app->submenu, "Packet test", BtDebugSubmenuIndexPacketTest, bt_debug_submenu_callback, app);
+    view_set_previous_callback(submenu_get_view(app->submenu), bt_debug_exit);
+    view_dispatcher_add_view(
+        app->view_dispatcher, BtDebugAppViewSubmenu, submenu_get_view(app->submenu));
+    app->bt_carrier_test = bt_carrier_test_alloc();
+    view_set_previous_callback(
+        bt_carrier_test_get_view(app->bt_carrier_test), bt_debug_start_view);
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        BtDebugAppViewCarrierTest,
+        bt_carrier_test_get_view(app->bt_carrier_test));
+    app->bt_packet_test = bt_packet_test_alloc();
+    view_set_previous_callback(bt_packet_test_get_view(app->bt_packet_test), bt_debug_start_view);
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        BtDebugAppViewPacketTest,
+        bt_packet_test_get_view(app->bt_packet_test));
+
+    // Switch to menu
+    view_dispatcher_switch_to_view(app->view_dispatcher, BtDebugAppViewSubmenu);
+
+    return app;
+}
+
+void bt_debug_app_free(BtDebugApp* app) {
+    furi_assert(app);
+
+    // Free views
+    view_dispatcher_remove_view(app->view_dispatcher, BtDebugAppViewSubmenu);
+    submenu_free(app->submenu);
+    view_dispatcher_remove_view(app->view_dispatcher, BtDebugAppViewCarrierTest);
+    bt_carrier_test_free(app->bt_carrier_test);
+    view_dispatcher_remove_view(app->view_dispatcher, BtDebugAppViewPacketTest);
+    bt_packet_test_free(app->bt_packet_test);
+    view_dispatcher_free(app->view_dispatcher);
+
+    // Close gui record
+    furi_record_close(RECORD_GUI);
+    app->gui = NULL;
+
+    // Free rest
+    free(app);
+}
+
+int32_t bt_debug_app(void* p) {
+    UNUSED(p);
+    if(!furi_hal_bt_is_testing_supported()) {
+        FURI_LOG_E(TAG, "Incorrect radio stack: radio testing features are absent.");
+        DialogsApp* dialogs = furi_record_open(RECORD_DIALOGS);
+        dialog_message_show_storage_error(dialogs, "Incorrect\nRadioStack");
+        return 255;
+    }
+
+    BtDebugApp* app = bt_debug_app_alloc();
+    // Was bt active?
+    const bool was_active = furi_hal_bt_is_active();
+    // Stop advertising
+    furi_hal_bt_stop_advertising();
+
+    view_dispatcher_run(app->view_dispatcher);
+
+    // Restart advertising
+    if(was_active) {
+        furi_hal_bt_start_advertising();
+    }
+    bt_debug_app_free(app);
+    return 0;
+}

applications/debug/bt_debug_app/bt_debug_app.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <furi.h>
+#include <gui/gui.h>
+#include <gui/view.h>
+#include <gui/view_dispatcher.h>
+#include <gui/modules/submenu.h>
+
+#include <dialogs/dialogs.h>
+
+#include "views/bt_carrier_test.h"
+#include "views/bt_packet_test.h"
+
+typedef struct {
+    Gui* gui;
+    ViewDispatcher* view_dispatcher;
+    Submenu* submenu;
+    BtCarrierTest* bt_carrier_test;
+    BtPacketTest* bt_packet_test;
+} BtDebugApp;
+
+typedef enum {
+    BtDebugAppViewSubmenu,
+    BtDebugAppViewCarrierTest,
+    BtDebugAppViewPacketTest,
+} BtDebugAppView;

applications/debug/bt_debug_app/views/bt_carrier_test.c

@@ -0,0 +1,188 @@
+#include "bt_carrier_test.h"
+#include "bt_test.h"
+#include "bt_test_types.h"
+#include <furi_hal_bt.h>
+
+struct BtCarrierTest {
+    BtTest* bt_test;
+    BtTestParam* bt_param_channel;
+    BtTestMode mode;
+    BtTestChannel channel;
+    BtTestPower power;
+    FuriTimer* timer;
+};
+
+static BtTestParamValue bt_param_mode[] = {
+    {.value = BtTestModeRx, .str = "Rx"},
+    {.value = BtTestModeTx, .str = "Tx"},
+    {.value = BtTestModeTxHopping, .str = "Hopping Tx"},
+};
+
+static BtTestParamValue bt_param_channel[] = {
+    {.value = BtTestChannel2402, .str = "2402 MHz"},
+    {.value = BtTestChannel2440, .str = "2440 MHz"},
+    {.value = BtTestChannel2480, .str = "2480 MHz"},
+};
+
+static BtTestParamValue bt_param_power[] = {
+    {.value = BtPower0dB, .str = "0 dB"},
+    {.value = BtPower2dB, .str = "2 dB"},
+    {.value = BtPower4dB, .str = "4 dB"},
+    {.value = BtPower6dB, .str = "6 dB"},
+};
+
+static void bt_carrier_test_start(BtCarrierTest* bt_carrier_test) {
+    furi_assert(bt_carrier_test);
+    if(bt_carrier_test->mode == BtTestModeRx) {
+        furi_hal_bt_start_packet_rx(bt_carrier_test->channel, 1);
+        furi_timer_start(bt_carrier_test->timer, furi_kernel_get_tick_frequency() / 4);
+    } else if(bt_carrier_test->mode == BtTestModeTxHopping) {
+        furi_hal_bt_start_tone_tx(bt_carrier_test->channel, bt_carrier_test->power);
+        furi_timer_start(bt_carrier_test->timer, furi_kernel_get_tick_frequency() * 2);
+    } else if(bt_carrier_test->mode == BtTestModeTx) {
+        furi_hal_bt_start_tone_tx(bt_carrier_test->channel, bt_carrier_test->power);
+    }
+}
+
+static void bt_carrier_test_switch_channel(BtCarrierTest* bt_carrier_test) {
+    furi_assert(bt_carrier_test);
+    furi_hal_bt_stop_tone_tx();
+    uint8_t channel_i = 0;
+    if(bt_carrier_test->channel == BtTestChannel2402) {
+        bt_carrier_test->channel = BtTestChannel2440;
+        channel_i = 1;
+    } else if(bt_carrier_test->channel == BtTestChannel2440) {
+        bt_carrier_test->channel = BtTestChannel2480;
+        channel_i = 2;
+    } else if(bt_carrier_test->channel == BtTestChannel2480) {
+        bt_carrier_test->channel = BtTestChannel2402;
+        channel_i = 0;
+    }
+    furi_hal_bt_start_tone_tx(bt_carrier_test->channel, bt_carrier_test->power);
+    bt_test_set_current_value_index(bt_carrier_test->bt_param_channel, channel_i);
+    bt_test_set_current_value_text(
+        bt_carrier_test->bt_param_channel, bt_param_channel[channel_i].str);
+}
+
+static void bt_carrier_test_stop(BtCarrierTest* bt_carrier_test) {
+    furi_assert(bt_carrier_test);
+    if(bt_carrier_test->mode == BtTestModeTxHopping) {
+        furi_hal_bt_stop_tone_tx();
+        furi_timer_stop(bt_carrier_test->timer);
+    } else if(bt_carrier_test->mode == BtTestModeTx) {
+        furi_hal_bt_stop_tone_tx();
+    } else if(bt_carrier_test->mode == BtTestModeRx) {
+        furi_hal_bt_stop_packet_test();
+        furi_timer_stop(bt_carrier_test->timer);
+    }
+}
+
+static uint32_t bt_carrier_test_param_changed(BtTestParam* param, BtTestParamValue* param_val) {
+    furi_assert(param);
+    uint8_t index = bt_test_get_current_value_index(param);
+    bt_test_set_current_value_text(param, param_val[index].str);
+    return param_val[index].value;
+}
+
+static void bt_carrier_test_mode_changed(BtTestParam* param) {
+    BtCarrierTest* bt_carrier_test = bt_test_get_context(param);
+    bt_carrier_test_stop(bt_carrier_test);
+    bt_carrier_test->mode = bt_carrier_test_param_changed(param, bt_param_mode);
+}
+
+static void bt_carrier_test_channel_changed(BtTestParam* param) {
+    BtCarrierTest* bt_carrier_test = bt_test_get_context(param);
+    bt_carrier_test_stop(bt_carrier_test);
+    bt_carrier_test->channel = bt_carrier_test_param_changed(param, bt_param_channel);
+}
+
+static void bt_carrier_test_param_channel(BtTestParam* param) {
+    BtCarrierTest* bt_carrier_test = bt_test_get_context(param);
+    bt_carrier_test_stop(bt_carrier_test);
+    bt_carrier_test->power = bt_carrier_test_param_changed(param, bt_param_power);
+}
+
+static void bt_carrier_test_change_state_callback(BtTestState state, void* context) {
+    furi_assert(context);
+    BtCarrierTest* bt_carrier_test = context;
+    furi_hal_bt_stop_tone_tx();
+    if(state == BtTestStateStarted) {
+        bt_carrier_test_start(bt_carrier_test);
+    } else if(state == BtTestStateStopped) {
+        bt_carrier_test_stop(bt_carrier_test);
+    }
+}
+
+static void bt_carrier_test_exit_callback(void* context) {
+    furi_assert(context);
+    BtCarrierTest* bt_carrier_test = context;
+    bt_carrier_test_stop(bt_carrier_test);
+}
+
+static void bt_test_carrier_timer_callback(void* context) {
+    furi_assert(context);
+    BtCarrierTest* bt_carrier_test = context;
+    if(bt_carrier_test->mode == BtTestModeRx) {
+        bt_test_set_rssi(bt_carrier_test->bt_test, furi_hal_bt_get_rssi());
+    } else if(bt_carrier_test->mode == BtTestModeTxHopping) {
+        bt_carrier_test_switch_channel(bt_carrier_test);
+    }
+}
+
+BtCarrierTest* bt_carrier_test_alloc() {
+    BtCarrierTest* bt_carrier_test = malloc(sizeof(BtCarrierTest));
+    bt_carrier_test->bt_test = bt_test_alloc();
+    bt_test_set_context(bt_carrier_test->bt_test, bt_carrier_test);
+    bt_test_set_change_state_callback(
+        bt_carrier_test->bt_test, bt_carrier_test_change_state_callback);
+    bt_test_set_back_callback(bt_carrier_test->bt_test, bt_carrier_test_exit_callback);
+
+    BtTestParam* param;
+    param = bt_test_param_add(
+        bt_carrier_test->bt_test,
+        "Mode",
+        COUNT_OF(bt_param_mode),
+        bt_carrier_test_mode_changed,
+        bt_carrier_test);
+    bt_test_set_current_value_index(param, 0);
+    bt_test_set_current_value_text(param, bt_param_mode[0].str);
+    bt_carrier_test->mode = BtTestModeRx;
+
+    param = bt_test_param_add(
+        bt_carrier_test->bt_test,
+        "Channel",
+        COUNT_OF(bt_param_channel),
+        bt_carrier_test_channel_changed,
+        bt_carrier_test);
+    bt_test_set_current_value_index(param, 0);
+    bt_test_set_current_value_text(param, bt_param_channel[0].str);
+    bt_carrier_test->channel = BtTestChannel2402;
+    bt_carrier_test->bt_param_channel = param;
+
+    param = bt_test_param_add(
+        bt_carrier_test->bt_test,
+        "Power",
+        COUNT_OF(bt_param_power),
+        bt_carrier_test_param_channel,
+        bt_carrier_test);
+    bt_test_set_current_value_index(param, 0);
+    bt_test_set_current_value_text(param, bt_param_power[0].str);
+    bt_carrier_test->power = BtPower0dB;
+
+    bt_carrier_test->timer =
+        furi_timer_alloc(bt_test_carrier_timer_callback, FuriTimerTypePeriodic, bt_carrier_test);
+
+    return bt_carrier_test;
+}
+
+void bt_carrier_test_free(BtCarrierTest* bt_carrier_test) {
+    furi_assert(bt_carrier_test);
+    bt_test_free(bt_carrier_test->bt_test);
+    furi_timer_free(bt_carrier_test->timer);
+    free(bt_carrier_test);
+}
+
+View* bt_carrier_test_get_view(BtCarrierTest* bt_carrier_test) {
+    furi_assert(bt_carrier_test);
+    return bt_test_get_view(bt_carrier_test->bt_test);
+}

applications/debug/bt_debug_app/views/bt_carrier_test.h

@@ -0,0 +1,10 @@
+#pragma once
+#include <gui/view.h>
+
+typedef struct BtCarrierTest BtCarrierTest;
+
+BtCarrierTest* bt_carrier_test_alloc();
+
+void bt_carrier_test_free(BtCarrierTest* bt_carrier_test);
+
+View* bt_carrier_test_get_view(BtCarrierTest* bt_carrier_test);

applications/debug/bt_debug_app/views/bt_packet_test.c

@@ -0,0 +1,155 @@
+#include "bt_packet_test.h"
+#include "bt_test.h"
+#include "bt_test_types.h"
+#include <furi_hal_bt.h>
+
+struct BtPacketTest {
+    BtTest* bt_test;
+    BtTestMode mode;
+    BtTestChannel channel;
+    BtTestDataRate data_rate;
+    FuriTimer* timer;
+};
+
+static BtTestParamValue bt_param_mode[] = {
+    {.value = BtTestModeRx, .str = "Rx"},
+    {.value = BtTestModeTx, .str = "Tx"},
+};
+
+static BtTestParamValue bt_param_channel[] = {
+    {.value = BtTestChannel2402, .str = "2402 MHz"},
+    {.value = BtTestChannel2440, .str = "2440 MHz"},
+    {.value = BtTestChannel2480, .str = "2480 MHz"},
+};
+
+static BtTestParamValue bt_param_data_rate[] = {
+    {.value = BtDataRate1M, .str = "1 Mbps"},
+    {.value = BtDataRate2M, .str = "2 Mbps"},
+};
+
+static void bt_packet_test_start(BtPacketTest* bt_packet_test) {
+    furi_assert(bt_packet_test);
+    if(bt_packet_test->mode == BtTestModeRx) {
+        furi_hal_bt_start_packet_rx(bt_packet_test->channel, bt_packet_test->data_rate);
+        furi_timer_start(bt_packet_test->timer, furi_kernel_get_tick_frequency() / 4);
+    } else if(bt_packet_test->mode == BtTestModeTx) {
+        furi_hal_bt_start_packet_tx(bt_packet_test->channel, 1, bt_packet_test->data_rate);
+    }
+}
+
+static void bt_packet_test_stop(BtPacketTest* bt_packet_test) {
+    furi_assert(bt_packet_test);
+    if(bt_packet_test->mode == BtTestModeTx) {
+        furi_hal_bt_stop_packet_test();
+        bt_test_set_packets_tx(bt_packet_test->bt_test, furi_hal_bt_get_transmitted_packets());
+    } else if(bt_packet_test->mode == BtTestModeRx) {
+        bt_test_set_packets_rx(bt_packet_test->bt_test, furi_hal_bt_stop_packet_test());
+        furi_timer_stop(bt_packet_test->timer);
+    }
+}
+
+static uint32_t bt_packet_test_param_changed(BtTestParam* param, BtTestParamValue* param_val) {
+    furi_assert(param);
+    uint8_t index = bt_test_get_current_value_index(param);
+    bt_test_set_current_value_text(param, param_val[index].str);
+    return param_val[index].value;
+}
+
+static void bt_packet_test_mode_changed(BtTestParam* param) {
+    BtPacketTest* bt_packet_test = bt_test_get_context(param);
+    bt_packet_test_stop(bt_packet_test);
+    bt_packet_test->mode = bt_packet_test_param_changed(param, bt_param_mode);
+}
+
+static void bt_packet_test_channel_changed(BtTestParam* param) {
+    BtPacketTest* bt_packet_test = bt_test_get_context(param);
+    bt_packet_test_stop(bt_packet_test);
+    bt_packet_test->channel = bt_packet_test_param_changed(param, bt_param_channel);
+}
+
+static void bt_packet_test_param_channel(BtTestParam* param) {
+    BtPacketTest* bt_packet_test = bt_test_get_context(param);
+    bt_packet_test_stop(bt_packet_test);
+    bt_packet_test->data_rate = bt_packet_test_param_changed(param, bt_param_data_rate);
+}
+
+static void bt_packet_test_change_state_callback(BtTestState state, void* context) {
+    furi_assert(context);
+    BtPacketTest* bt_packet_test = context;
+    if(state == BtTestStateStarted) {
+        bt_packet_test_start(bt_packet_test);
+    } else if(state == BtTestStateStopped) {
+        bt_packet_test_stop(bt_packet_test);
+    }
+}
+
+static void bt_packet_test_exit_callback(void* context) {
+    furi_assert(context);
+    BtPacketTest* bt_packet_test = context;
+    bt_packet_test_stop(bt_packet_test);
+}
+
+static void bt_test_packet_timer_callback(void* context) {
+    furi_assert(context);
+    BtPacketTest* bt_packet_test = context;
+    if(bt_packet_test->mode == BtTestModeRx) {
+        bt_test_set_rssi(bt_packet_test->bt_test, furi_hal_bt_get_rssi());
+    }
+}
+
+BtPacketTest* bt_packet_test_alloc() {
+    BtPacketTest* bt_packet_test = malloc(sizeof(BtPacketTest));
+    bt_packet_test->bt_test = bt_test_alloc();
+    bt_test_set_context(bt_packet_test->bt_test, bt_packet_test);
+    bt_test_set_change_state_callback(
+        bt_packet_test->bt_test, bt_packet_test_change_state_callback);
+    bt_test_set_back_callback(bt_packet_test->bt_test, bt_packet_test_exit_callback);
+
+    BtTestParam* param;
+    param = bt_test_param_add(
+        bt_packet_test->bt_test,
+        "Mode",
+        COUNT_OF(bt_param_mode),
+        bt_packet_test_mode_changed,
+        bt_packet_test);
+    bt_test_set_current_value_index(param, 0);
+    bt_test_set_current_value_text(param, bt_param_mode[0].str);
+    bt_packet_test->mode = BtTestModeRx;
+
+    param = bt_test_param_add(
+        bt_packet_test->bt_test,
+        "Channel",
+        COUNT_OF(bt_param_channel),
+        bt_packet_test_channel_changed,
+        bt_packet_test);
+    bt_test_set_current_value_index(param, 0);
+    bt_test_set_current_value_text(param, bt_param_channel[0].str);
+    bt_packet_test->channel = BtTestChannel2402;
+
+    param = bt_test_param_add(
+        bt_packet_test->bt_test,
+        "Data rate",
+        COUNT_OF(bt_param_data_rate),
+        bt_packet_test_param_channel,
+        bt_packet_test);
+    bt_test_set_current_value_index(param, 0);
+    bt_test_set_current_value_text(param, bt_param_data_rate[0].str);
+    bt_packet_test->data_rate = BtDataRate1M;
+
+    bt_packet_test->timer =
+        furi_timer_alloc(bt_test_packet_timer_callback, FuriTimerTypePeriodic, bt_packet_test);
+
+    return bt_packet_test;
+}
+
+void bt_packet_test_free(BtPacketTest* bt_packet_test) {
+    furi_assert(bt_packet_test);
+    bt_test_free(bt_packet_test->bt_test);
+    furi_timer_free(bt_packet_test->timer);
+    free(bt_packet_test);
+}
+
+View* bt_packet_test_get_view(BtPacketTest* bt_packet_test) {
+    furi_assert(bt_packet_test);
+    return bt_test_get_view(bt_packet_test->bt_test);
+}

applications/debug/bt_debug_app/views/bt_packet_test.h

@@ -0,0 +1,10 @@
+#pragma once
+#include <gui/view.h>
+
+typedef struct BtPacketTest BtPacketTest;
+
+BtPacketTest* bt_packet_test_alloc();
+
+void bt_packet_test_free(BtPacketTest* bt_packet_test);
+
+View* bt_packet_test_get_view(BtPacketTest* bt_packet_test);

applications/debug/bt_debug_app/views/bt_test.c

@@ -0,0 +1,434 @@
+#include "bt_test.h"
+
+#include <gui/canvas.h>
+#include <gui/elements.h>
+
+#include <lib/toolbox/float_tools.h>
+#include <m-array.h>
+#include <furi.h>
+#include <inttypes.h>
+#include <stdint.h>
+
+struct BtTestParam {
+    const char* label;
+    uint8_t current_value_index;
+    FuriString* current_value_text;
+    uint8_t values_count;
+    BtTestParamChangeCallback change_callback;
+    void* context;
+};
+
+ARRAY_DEF(BtTestParamArray, BtTestParam, M_POD_OPLIST);
+
+struct BtTest {
+    View* view;
+    BtTestChangeStateCallback change_state_callback;
+    BtTestBackCallback back_callback;
+    void* context;
+};
+
+typedef struct {
+    BtTestState state;
+    BtTestParamArray_t params;
+    uint8_t position;
+    uint8_t window_position;
+    const char* message;
+    float rssi;
+    uint32_t packets_num_rx;
+    uint32_t packets_num_tx;
+} BtTestModel;
+
+#define BT_TEST_START_MESSAGE "Ok - Start"
+#define BT_TEST_STOP_MESSAGE "Ok - Stop"
+
+static void bt_test_process_up(BtTest* bt_test);
+static void bt_test_process_down(BtTest* bt_test);
+static void bt_test_process_left(BtTest* bt_test);
+static void bt_test_process_right(BtTest* bt_test);
+static void bt_test_process_ok(BtTest* bt_test);
+static void bt_test_process_back(BtTest* bt_test);
+
+static void bt_test_draw_callback(Canvas* canvas, void* _model) {
+    BtTestModel* model = _model;
+    char info_str[32];
+
+    const uint8_t param_height = 16;
+    const uint8_t param_width = 123;
+
+    canvas_clear(canvas);
+
+    uint8_t position = 0;
+    BtTestParamArray_it_t it;
+
+    canvas_set_font(canvas, FontSecondary);
+    for(BtTestParamArray_it(it, model->params); !BtTestParamArray_end_p(it);
+        BtTestParamArray_next(it)) {
+        uint8_t param_position = position - model->window_position;
+        uint8_t params_on_screen = 3;
+        uint8_t y_offset = 0;
+
+        if(param_position < params_on_screen) {
+            const BtTestParam* param = BtTestParamArray_cref(it);
+            uint8_t param_y = y_offset + (param_position * param_height);
+            uint8_t param_text_y = param_y + param_height - 4;
+
+            if(position == model->position) {
+                canvas_set_color(canvas, ColorBlack);
+                elements_slightly_rounded_box(
+                    canvas, 0, param_y + 1, param_width, param_height - 2);
+                canvas_set_color(canvas, ColorWhite);
+            } else {
+                canvas_set_color(canvas, ColorBlack);
+            }
+
+            canvas_draw_str(canvas, 6, param_text_y, param->label);
+
+            if(param->current_value_index > 0) {
+                canvas_draw_str(canvas, 50, param_text_y, "<");
+            }
+
+            canvas_draw_str(
+                canvas, 61, param_text_y, furi_string_get_cstr(param->current_value_text));
+
+            if(param->current_value_index < (param->values_count - 1)) {
+                canvas_draw_str(canvas, 113, param_text_y, ">");
+            }
+        }
+
+        position++;
+    }
+
+    elements_scrollbar(canvas, model->position, BtTestParamArray_size(model->params));
+    canvas_draw_str(canvas, 6, 60, model->message);
+    if(model->state == BtTestStateStarted) {
+        if(!float_is_equal(model->rssi, 0.0f)) {
+            snprintf(info_str, sizeof(info_str), "RSSI:%3.1f dB", (double)model->rssi);
+            canvas_draw_str_aligned(canvas, 124, 60, AlignRight, AlignBottom, info_str);
+        }
+    } else if(model->state == BtTestStateStopped) {
+        if(model->packets_num_rx) {
+            snprintf(info_str, sizeof(info_str), "%" PRIu32 " pack rcv", model->packets_num_rx);
+            canvas_draw_str_aligned(canvas, 124, 60, AlignRight, AlignBottom, info_str);
+        } else if(model->packets_num_tx) {
+            snprintf(info_str, sizeof(info_str), "%" PRIu32 " pack sent", model->packets_num_tx);
+            canvas_draw_str_aligned(canvas, 124, 60, AlignRight, AlignBottom, info_str);
+        }
+    }
+}
+
+static bool bt_test_input_callback(InputEvent* event, void* context) {
+    BtTest* bt_test = context;
+    furi_assert(bt_test);
+    bool consumed = false;
+
+    if(event->type == InputTypeShort) {
+        switch(event->key) {
+        case InputKeyUp:
+            consumed = true;
+            bt_test_process_up(bt_test);
+            break;
+        case InputKeyDown:
+            consumed = true;
+            bt_test_process_down(bt_test);
+            break;
+        case InputKeyLeft:
+            consumed = true;
+            bt_test_process_left(bt_test);
+            break;
+        case InputKeyRight:
+            consumed = true;
+            bt_test_process_right(bt_test);
+            break;
+        case InputKeyOk:
+            consumed = true;
+            bt_test_process_ok(bt_test);
+            break;
+        case InputKeyBack:
+            consumed = false;
+            bt_test_process_back(bt_test);
+            break;
+        default:
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void bt_test_process_up(BtTest* bt_test) {
+    with_view_model( // -V658
+        bt_test->view,
+        BtTestModel * model,
+        {
+            uint8_t params_on_screen = 3;
+            if(model->position > 0) {
+                model->position--;
+                if(((model->position - model->window_position) < 1) &&
+                   model->window_position > 0) {
+                    model->window_position--;
+                }
+            } else {
+                model->position = BtTestParamArray_size(model->params) - 1;
+                if(model->position > (params_on_screen - 1)) {
+                    model->window_position = model->position - (params_on_screen - 1);
+                }
+            }
+        },
+        true);
+}
+
+void bt_test_process_down(BtTest* bt_test) {
+    with_view_model(
+        bt_test->view,
+        BtTestModel * model,
+        {
+            uint8_t params_on_screen = 3;
+            if(model->position < (BtTestParamArray_size(model->params) - 1)) {
+                model->position++;
+                if((model->position - model->window_position) > (params_on_screen - 2) &&
+                   model->window_position <
+                       (BtTestParamArray_size(model->params) - params_on_screen)) {
+                    model->window_position++;
+                }
+            } else {
+                model->position = 0;
+                model->window_position = 0;
+            }
+        },
+        true);
+}
+
+BtTestParam* bt_test_get_selected_param(BtTestModel* model) {
+    BtTestParam* param = NULL;
+
+    BtTestParamArray_it_t it;
+    uint8_t position = 0;
+    for(BtTestParamArray_it(it, model->params); !BtTestParamArray_end_p(it);
+        BtTestParamArray_next(it)) {
+        if(position == model->position) {
+            break;
+        }
+        position++;
+    }
+
+    param = BtTestParamArray_ref(it);
+
+    furi_assert(param);
+    return param;
+}
+
+void bt_test_process_left(BtTest* bt_test) {
+    BtTestParam* param;
+    with_view_model(
+        bt_test->view,
+        BtTestModel * model,
+        {
+            param = bt_test_get_selected_param(model);
+            if(param->current_value_index > 0) {
+                param->current_value_index--;
+                if(param->change_callback) {
+                    model->state = BtTestStateStopped;
+                    model->message = BT_TEST_START_MESSAGE;
+                    model->rssi = 0.0f;
+                    model->packets_num_rx = 0;
+                    model->packets_num_tx = 0;
+                }
+            }
+        },
+        true);
+    if(param->change_callback) {
+        param->change_callback(param);
+    }
+}
+
+void bt_test_process_right(BtTest* bt_test) {
+    BtTestParam* param;
+    with_view_model(
+        bt_test->view,
+        BtTestModel * model,
+        {
+            param = bt_test_get_selected_param(model);
+            if(param->current_value_index < (param->values_count - 1)) {
+                param->current_value_index++;
+                if(param->change_callback) {
+                    model->state = BtTestStateStopped;
+                    model->message = BT_TEST_START_MESSAGE;
+                    model->rssi = 0.0f;
+                    model->packets_num_rx = 0;
+                    model->packets_num_tx = 0;
+                }
+            }
+        },
+        true);
+    if(param->change_callback) {
+        param->change_callback(param);
+    }
+}
+
+void bt_test_process_ok(BtTest* bt_test) {
+    BtTestState state;
+    with_view_model(
+        bt_test->view,
+        BtTestModel * model,
+        {
+            if(model->state == BtTestStateStarted) {
+                model->state = BtTestStateStopped;
+                model->message = BT_TEST_START_MESSAGE;
+                model->rssi = 0.0f;
+                model->packets_num_rx = 0;
+                model->packets_num_tx = 0;
+            } else if(model->state == BtTestStateStopped) {
+                model->state = BtTestStateStarted;
+                model->message = BT_TEST_STOP_MESSAGE;
+            }
+            state = model->state;
+        },
+        true);
+    if(bt_test->change_state_callback) {
+        bt_test->change_state_callback(state, bt_test->context);
+    }
+}
+
+void bt_test_process_back(BtTest* bt_test) {
+    with_view_model(
+        bt_test->view,
+        BtTestModel * model,
+        {
+            model->state = BtTestStateStopped;
+            model->rssi = 0.0f;
+            model->packets_num_rx = 0;
+            model->packets_num_tx = 0;
+        },
+        false);
+    if(bt_test->back_callback) {
+        bt_test->back_callback(bt_test->context);
+    }
+}
+
+BtTest* bt_test_alloc() {
+    BtTest* bt_test = malloc(sizeof(BtTest));
+    bt_test->view = view_alloc();
+    view_set_context(bt_test->view, bt_test);
+    view_allocate_model(bt_test->view, ViewModelTypeLocking, sizeof(BtTestModel));
+    view_set_draw_callback(bt_test->view, bt_test_draw_callback);
+    view_set_input_callback(bt_test->view, bt_test_input_callback);
+
+    with_view_model(
+        bt_test->view,
+        BtTestModel * model,
+        {
+            model->state = BtTestStateStopped;
+            model->message = "Ok - Start";
+            BtTestParamArray_init(model->params);
+            model->position = 0;
+            model->window_position = 0;
+            model->rssi = 0.0f;
+            model->packets_num_tx = 0;
+            model->packets_num_rx = 0;
+        },
+        true);
+
+    return bt_test;
+}
+
+void bt_test_free(BtTest* bt_test) {
+    furi_assert(bt_test);
+
+    with_view_model(
+        bt_test->view,
+        BtTestModel * model,
+        {
+            BtTestParamArray_it_t it;
+            for(BtTestParamArray_it(it, model->params); !BtTestParamArray_end_p(it);
+                BtTestParamArray_next(it)) {
+                furi_string_free(BtTestParamArray_ref(it)->current_value_text);
+            }
+            BtTestParamArray_clear(model->params);
+        },
+        false);
+    view_free(bt_test->view);
+    free(bt_test);
+}
+
+View* bt_test_get_view(BtTest* bt_test) {
+    furi_assert(bt_test);
+    return bt_test->view;
+}
+
+BtTestParam* bt_test_param_add(
+    BtTest* bt_test,
+    const char* label,
+    uint8_t values_count,
+    BtTestParamChangeCallback change_callback,
+    void* context) {
+    BtTestParam* param = NULL;
+    furi_assert(label);
+    furi_assert(bt_test);
+
+    with_view_model(
+        bt_test->view,
+        BtTestModel * model,
+        {
+            param = BtTestParamArray_push_new(model->params);
+            param->label = label;
+            param->values_count = values_count;
+            param->change_callback = change_callback;
+            param->context = context;
+            param->current_value_index = 0;
+            param->current_value_text = furi_string_alloc();
+        },
+        true);
+
+    return param;
+}
+
+void bt_test_set_rssi(BtTest* bt_test, float rssi) {
+    furi_assert(bt_test);
+    with_view_model(
+        bt_test->view, BtTestModel * model, { model->rssi = rssi; }, true);
+}
+
+void bt_test_set_packets_tx(BtTest* bt_test, uint32_t packets_num) {
+    furi_assert(bt_test);
+    with_view_model(
+        bt_test->view, BtTestModel * model, { model->packets_num_tx = packets_num; }, true);
+}
+
+void bt_test_set_packets_rx(BtTest* bt_test, uint32_t packets_num) {
+    furi_assert(bt_test);
+    with_view_model(
+        bt_test->view, BtTestModel * model, { model->packets_num_rx = packets_num; }, true);
+}
+
+void bt_test_set_change_state_callback(BtTest* bt_test, BtTestChangeStateCallback callback) {
+    furi_assert(bt_test);
+    furi_assert(callback);
+    bt_test->change_state_callback = callback;
+}
+
+void bt_test_set_back_callback(BtTest* bt_test, BtTestBackCallback callback) {
+    furi_assert(bt_test);
+    furi_assert(callback);
+    bt_test->back_callback = callback;
+}
+
+void bt_test_set_context(BtTest* bt_test, void* context) {
+    furi_assert(bt_test);
+    bt_test->context = context;
+}
+
+void bt_test_set_current_value_index(BtTestParam* param, uint8_t current_value_index) {
+    param->current_value_index = current_value_index;
+}
+
+void bt_test_set_current_value_text(BtTestParam* param, const char* current_value_text) {
+    furi_string_set(param->current_value_text, current_value_text);
+}
+
+uint8_t bt_test_get_current_value_index(BtTestParam* param) {
+    return param->current_value_index;
+}
+
+void* bt_test_get_context(BtTestParam* param) {
+    return param->context;
+}

applications/debug/bt_debug_app/views/bt_test.h

@@ -0,0 +1,46 @@
+#pragma once
+#include <gui/view.h>
+
+typedef enum {
+    BtTestStateStarted,
+    BtTestStateStopped,
+} BtTestState;
+
+typedef struct BtTest BtTest;
+typedef void (*BtTestChangeStateCallback)(BtTestState state, void* context);
+typedef void (*BtTestBackCallback)(void* context);
+typedef struct BtTestParam BtTestParam;
+typedef void (*BtTestParamChangeCallback)(BtTestParam* param);
+
+BtTest* bt_test_alloc();
+
+void bt_test_free(BtTest* bt_test);
+
+View* bt_test_get_view(BtTest* bt_test);
+
+BtTestParam* bt_test_param_add(
+    BtTest* bt_test,
+    const char* label,
+    uint8_t values_count,
+    BtTestParamChangeCallback change_callback,
+    void* context);
+
+void bt_test_set_change_state_callback(BtTest* bt_test, BtTestChangeStateCallback callback);
+
+void bt_test_set_back_callback(BtTest* bt_test, BtTestBackCallback callback);
+
+void bt_test_set_context(BtTest* bt_test, void* context);
+
+void bt_test_set_rssi(BtTest* bt_test, float rssi);
+
+void bt_test_set_packets_tx(BtTest* bt_test, uint32_t packets_num);
+
+void bt_test_set_packets_rx(BtTest* bt_test, uint32_t packets_num);
+
+void bt_test_set_current_value_index(BtTestParam* param, uint8_t current_value_index);
+
+void bt_test_set_current_value_text(BtTestParam* param, const char* current_value_text);
+
+uint8_t bt_test_get_current_value_index(BtTestParam* param);
+
+void* bt_test_get_context(BtTestParam* param);

applications/debug/bt_debug_app/views/bt_test_types.h

@@ -0,0 +1,30 @@
+#pragma once
+
+typedef enum {
+    BtTestModeRx,
+    BtTestModeTx,
+    BtTestModeTxHopping,
+} BtTestMode;
+
+typedef enum {
+    BtTestChannel2402 = 0,
+    BtTestChannel2440 = 19,
+    BtTestChannel2480 = 39,
+} BtTestChannel;
+
+typedef enum {
+    BtPower0dB = 0x19,
+    BtPower2dB = 0x1B,
+    BtPower4dB = 0x1D,
+    BtPower6dB = 0x1F,
+} BtTestPower;
+
+typedef enum {
+    BtDataRate1M = 1,
+    BtDataRate2M = 2,
+} BtTestDataRate;
+
+typedef struct {
+    uint32_t value;
+    const char* str;
+} BtTestParamValue;

applications/debug/direct_draw/application.fam

@@ -0,0 +1,10 @@
+App(
+    appid="direct_draw",
+    name="Direct Draw",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="direct_draw_app",
+    requires=["gui", "input"],
+    stack_size=2 * 1024,
+    order=70,
+    fap_category="Debug",
+)

applications/debug/direct_draw/direct_draw.c

@@ -0,0 +1,112 @@
+#include <furi.h>
+#include <gui/gui.h>
+#include <gui/canvas_i.h>
+#include <input/input.h>
+
+#define BUFFER_SIZE (32U)
+
+typedef struct {
+    FuriPubSub* input;
+    FuriPubSubSubscription* input_subscription;
+    Gui* gui;
+    Canvas* canvas;
+    bool stop;
+    uint32_t counter;
+} DirectDraw;
+
+static void gui_input_events_callback(const void* value, void* ctx) {
+    furi_assert(value);
+    furi_assert(ctx);
+
+    DirectDraw* instance = ctx;
+    const InputEvent* event = value;
+
+    if(event->key == InputKeyBack && event->type == InputTypeShort) {
+        instance->stop = true;
+    }
+}
+
+static DirectDraw* direct_draw_alloc() {
+    DirectDraw* instance = malloc(sizeof(DirectDraw));
+
+    instance->input = furi_record_open(RECORD_INPUT_EVENTS);
+    instance->gui = furi_record_open(RECORD_GUI);
+    instance->canvas = gui_direct_draw_acquire(instance->gui);
+
+    instance->input_subscription =
+        furi_pubsub_subscribe(instance->input, gui_input_events_callback, instance);
+
+    return instance;
+}
+
+static void direct_draw_free(DirectDraw* instance) {
+    furi_pubsub_unsubscribe(instance->input, instance->input_subscription);
+
+    instance->canvas = NULL;
+    gui_direct_draw_release(instance->gui);
+    furi_record_close(RECORD_GUI);
+    furi_record_close(RECORD_INPUT_EVENTS);
+}
+
+static void direct_draw_block(Canvas* canvas, uint32_t size, uint32_t counter) {
+    size += 16;
+    uint8_t width = canvas_width(canvas) - size;
+    uint8_t height = canvas_height(canvas) - size;
+
+    uint8_t x = counter % width;
+    if((counter / width) % 2) {
+        x = width - x;
+    }
+
+    uint8_t y = counter % height;
+    if((counter / height) % 2) {
+        y = height - y;
+    }
+
+    canvas_draw_box(canvas, x, y, size, size);
+}
+
+static void direct_draw_run(DirectDraw* instance) {
+    size_t start = DWT->CYCCNT;
+    size_t counter = 0;
+    float fps = 0;
+
+    vTaskPrioritySet(furi_thread_get_current_id(), FuriThreadPriorityIdle);
+
+    do {
+        size_t elapsed = DWT->CYCCNT - start;
+        char buffer[BUFFER_SIZE] = {0};
+
+        if(elapsed >= 64000000) {
+            fps = (float)counter / ((float)elapsed / 64000000.0f);
+
+            start = DWT->CYCCNT;
+            counter = 0;
+        }
+        snprintf(buffer, BUFFER_SIZE, "FPS: %.1f", (double)fps);
+
+        canvas_reset(instance->canvas);
+        canvas_set_color(instance->canvas, ColorXOR);
+        direct_draw_block(instance->canvas, instance->counter % 16, instance->counter);
+        direct_draw_block(instance->canvas, instance->counter * 2 % 16, instance->counter * 2);
+        direct_draw_block(instance->canvas, instance->counter * 3 % 16, instance->counter * 3);
+        direct_draw_block(instance->canvas, instance->counter * 4 % 16, instance->counter * 4);
+        direct_draw_block(instance->canvas, instance->counter * 5 % 16, instance->counter * 5);
+        canvas_draw_str(instance->canvas, 10, 10, buffer);
+        canvas_commit(instance->canvas);
+
+        counter++;
+        instance->counter++;
+        furi_thread_yield();
+    } while(!instance->stop);
+}
+
+int32_t direct_draw_app(void* p) {
+    UNUSED(p);
+
+    DirectDraw* instance = direct_draw_alloc();
+    direct_draw_run(instance);
+    direct_draw_free(instance);
+
+    return 0;
+}

applications/debug/display_test/application.fam

@@ -0,0 +1,12 @@
+App(
+    appid="display_test",
+    name="Display Test",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="display_test_app",
+    cdefines=["APP_DISPLAY_TEST"],
+    requires=["gui"],
+    fap_libs=["misc"],
+    stack_size=1 * 1024,
+    order=120,
+    fap_category="Debug",
+)

applications/debug/display_test/display_test.c

@@ -0,0 +1,231 @@
+#include "display_test.h"
+
+#include <furi_hal.h>
+#include <furi.h>
+
+// Need access to u8g2
+#include <gui/gui_i.h>
+#include <gui/canvas_i.h>
+#include <u8g2_glue.h>
+
+#include <gui/view_dispatcher.h>
+#include <gui/modules/submenu.h>
+#include <gui/modules/variable_item_list.h>
+
+#include "view_display_test.h"
+
+#define TAG "DisplayTest"
+
+typedef struct {
+    Gui* gui;
+    ViewDispatcher* view_dispatcher;
+    ViewDisplayTest* view_display_test;
+    VariableItemList* variable_item_list;
+    Submenu* submenu;
+
+    bool config_bias;
+    uint8_t config_contrast;
+    uint8_t config_regulation_ratio;
+} DisplayTest;
+
+typedef enum {
+    DisplayTestViewSubmenu,
+    DisplayTestViewConfigure,
+    DisplayTestViewDisplayTest,
+} DisplayTestView;
+
+const bool config_bias_value[] = {
+    true,
+    false,
+};
+const char* const config_bias_text[] = {
+    "1/7",
+    "1/9",
+};
+
+const uint8_t config_regulation_ratio_value[] = {
+    0b000,
+    0b001,
+    0b010,
+    0b011,
+    0b100,
+    0b101,
+    0b110,
+    0b111,
+};
+const char* const config_regulation_ratio_text[] = {
+    "3.0",
+    "3.5",
+    "4.0",
+    "4.5",
+    "5.0",
+    "5.5",
+    "6.0",
+    "6.5",
+};
+
+static void display_test_submenu_callback(void* context, uint32_t index) {
+    DisplayTest* instance = (DisplayTest*)context;
+    view_dispatcher_switch_to_view(instance->view_dispatcher, index);
+}
+
+static uint32_t display_test_previous_callback(void* context) {
+    UNUSED(context);
+    return DisplayTestViewSubmenu;
+}
+
+static uint32_t display_test_exit_callback(void* context) {
+    UNUSED(context);
+    return VIEW_NONE;
+}
+
+static void display_test_reload_config(DisplayTest* instance) {
+    FURI_LOG_I(
+        TAG,
+        "contrast: %d, regulation_ratio: %d, bias: %d",
+        instance->config_contrast,
+        instance->config_regulation_ratio,
+        instance->config_bias);
+    u8x8_d_st756x_init(
+        &instance->gui->canvas->fb.u8x8,
+        instance->config_contrast,
+        instance->config_regulation_ratio,
+        instance->config_bias);
+}
+
+static void display_config_set_bias(VariableItem* item) {
+    DisplayTest* instance = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    variable_item_set_current_value_text(item, config_bias_text[index]);
+    instance->config_bias = config_bias_value[index];
+    display_test_reload_config(instance);
+}
+
+static void display_config_set_regulation_ratio(VariableItem* item) {
+    DisplayTest* instance = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    variable_item_set_current_value_text(item, config_regulation_ratio_text[index]);
+    instance->config_regulation_ratio = config_regulation_ratio_value[index];
+    display_test_reload_config(instance);
+}
+
+static void display_config_set_contrast(VariableItem* item) {
+    DisplayTest* instance = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    FuriString* temp;
+    temp = furi_string_alloc();
+    furi_string_cat_printf(temp, "%d", index);
+    variable_item_set_current_value_text(item, furi_string_get_cstr(temp));
+    furi_string_free(temp);
+    instance->config_contrast = index;
+    display_test_reload_config(instance);
+}
+
+DisplayTest* display_test_alloc() {
+    DisplayTest* instance = malloc(sizeof(DisplayTest));
+
+    View* view = NULL;
+
+    instance->gui = furi_record_open(RECORD_GUI);
+    instance->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(instance->view_dispatcher);
+    view_dispatcher_attach_to_gui(
+        instance->view_dispatcher, instance->gui, ViewDispatcherTypeFullscreen);
+
+    // Test
+    instance->view_display_test = view_display_test_alloc();
+    view = view_display_test_get_view(instance->view_display_test);
+    view_set_previous_callback(view, display_test_previous_callback);
+    view_dispatcher_add_view(instance->view_dispatcher, DisplayTestViewDisplayTest, view);
+
+    // Configure
+    instance->variable_item_list = variable_item_list_alloc();
+    view = variable_item_list_get_view(instance->variable_item_list);
+    view_set_previous_callback(view, display_test_previous_callback);
+    view_dispatcher_add_view(instance->view_dispatcher, DisplayTestViewConfigure, view);
+
+    // Configuration items
+    VariableItem* item;
+    instance->config_bias = false;
+    instance->config_contrast = 32;
+    instance->config_regulation_ratio = 0b101;
+    // Bias
+    item = variable_item_list_add(
+        instance->variable_item_list,
+        "Bias:",
+        COUNT_OF(config_bias_value),
+        display_config_set_bias,
+        instance);
+    variable_item_set_current_value_index(item, 1);
+    variable_item_set_current_value_text(item, config_bias_text[1]);
+    // Regulation Ratio
+    item = variable_item_list_add(
+        instance->variable_item_list,
+        "Reg Ratio:",
+        COUNT_OF(config_regulation_ratio_value),
+        display_config_set_regulation_ratio,
+        instance);
+    variable_item_set_current_value_index(item, 5);
+    variable_item_set_current_value_text(item, config_regulation_ratio_text[5]);
+    // Contrast
+    item = variable_item_list_add(
+        instance->variable_item_list, "Contrast:", 64, display_config_set_contrast, instance);
+    variable_item_set_current_value_index(item, 32);
+    variable_item_set_current_value_text(item, "32");
+
+    // Menu
+    instance->submenu = submenu_alloc();
+    view = submenu_get_view(instance->submenu);
+    view_set_previous_callback(view, display_test_exit_callback);
+    view_dispatcher_add_view(instance->view_dispatcher, DisplayTestViewSubmenu, view);
+    submenu_add_item(
+        instance->submenu,
+        "Test",
+        DisplayTestViewDisplayTest,
+        display_test_submenu_callback,
+        instance);
+    submenu_add_item(
+        instance->submenu,
+        "Configure",
+        DisplayTestViewConfigure,
+        display_test_submenu_callback,
+        instance);
+
+    return instance;
+}
+
+void display_test_free(DisplayTest* instance) {
+    view_dispatcher_remove_view(instance->view_dispatcher, DisplayTestViewSubmenu);
+    submenu_free(instance->submenu);
+
+    view_dispatcher_remove_view(instance->view_dispatcher, DisplayTestViewConfigure);
+    variable_item_list_free(instance->variable_item_list);
+
+    view_dispatcher_remove_view(instance->view_dispatcher, DisplayTestViewDisplayTest);
+    view_display_test_free(instance->view_display_test);
+
+    view_dispatcher_free(instance->view_dispatcher);
+    furi_record_close(RECORD_GUI);
+
+    free(instance);
+}
+
+int32_t display_test_run(DisplayTest* instance) {
+    UNUSED(instance);
+    view_dispatcher_switch_to_view(instance->view_dispatcher, DisplayTestViewSubmenu);
+    view_dispatcher_run(instance->view_dispatcher);
+
+    return 0;
+}
+
+int32_t display_test_app(void* p) {
+    UNUSED(p);
+
+    DisplayTest* instance = display_test_alloc();
+
+    int32_t ret = display_test_run(instance);
+
+    display_test_free(instance);
+
+    return ret;
+}

applications/debug/display_test/display_test.h

@@ -0,0 +1 @@
+#pragma once

applications/debug/display_test/view_display_test.c

@@ -0,0 +1,185 @@
+#include "view_display_test.h"
+
+typedef struct {
+    uint32_t test;
+    uint32_t size;
+    uint32_t counter;
+    bool flip_flop;
+} ViewDisplayTestModel;
+
+struct ViewDisplayTest {
+    View* view;
+    FuriTimer* timer;
+};
+
+static void view_display_test_draw_callback_intro(Canvas* canvas, void* _model) {
+    UNUSED(_model);
+    canvas_draw_str(canvas, 12, 24, "Use < and > to switch tests");
+    canvas_draw_str(canvas, 12, 36, "Use ^ and v to switch size");
+    canvas_draw_str(canvas, 32, 48, "Use (o) to flip");
+}
+
+static void view_display_test_draw_callback_fill(Canvas* canvas, void* _model) {
+    ViewDisplayTestModel* model = _model;
+    if(model->flip_flop) {
+        uint8_t width = canvas_width(canvas);
+        uint8_t height = canvas_height(canvas);
+        canvas_draw_box(canvas, 0, 0, width, height);
+    }
+}
+
+static void view_display_test_draw_callback_hstripe(Canvas* canvas, void* _model) {
+    ViewDisplayTestModel* model = _model;
+    uint8_t block = 1 + model->size;
+    uint8_t width = canvas_width(canvas);
+    uint8_t height = canvas_height(canvas);
+
+    for(uint8_t y = model->flip_flop * block; y < height; y += 2 * block) {
+        canvas_draw_box(canvas, 0, y, width, block);
+    }
+}
+
+static void view_display_test_draw_callback_vstripe(Canvas* canvas, void* _model) {
+    ViewDisplayTestModel* model = _model;
+    uint8_t block = 1 + model->size;
+    uint8_t width = canvas_width(canvas);
+    uint8_t height = canvas_height(canvas);
+
+    for(uint8_t x = model->flip_flop * block; x < width; x += 2 * block) {
+        canvas_draw_box(canvas, x, 0, block, height);
+    }
+}
+
+static void view_display_test_draw_callback_check(Canvas* canvas, void* _model) {
+    ViewDisplayTestModel* model = _model;
+    uint8_t block = 1 + model->size;
+    uint8_t width = canvas_width(canvas);
+    uint8_t height = canvas_height(canvas);
+
+    bool flip_flop = model->flip_flop;
+    for(uint8_t x = 0; x < width; x += block) {
+        bool last_flip_flop = flip_flop;
+        for(uint8_t y = 0; y < height; y += block) {
+            if(flip_flop) {
+                canvas_draw_box(canvas, x, y, block, block);
+            }
+            flip_flop = !flip_flop;
+        }
+        if(last_flip_flop == flip_flop) {
+            flip_flop = !flip_flop;
+        }
+    }
+}
+
+static void view_display_test_draw_callback_move(Canvas* canvas, void* _model) {
+    ViewDisplayTestModel* model = _model;
+    uint8_t block = 1 + model->size;
+    uint8_t width = canvas_width(canvas) - block;
+    uint8_t height = canvas_height(canvas) - block;
+
+    uint8_t x = model->counter % width;
+    if((model->counter / width) % 2) {
+        x = width - x;
+    }
+
+    uint8_t y = model->counter % height;
+    if((model->counter / height) % 2) {
+        y = height - y;
+    }
+
+    canvas_draw_box(canvas, x, y, block, block);
+}
+
+const ViewDrawCallback view_display_test_tests[] = {
+    view_display_test_draw_callback_intro,
+    view_display_test_draw_callback_fill,
+    view_display_test_draw_callback_hstripe,
+    view_display_test_draw_callback_vstripe,
+    view_display_test_draw_callback_check,
+    view_display_test_draw_callback_move,
+};
+
+static void view_display_test_draw_callback(Canvas* canvas, void* _model) {
+    ViewDisplayTestModel* model = _model;
+    view_display_test_tests[model->test](canvas, _model);
+}
+
+static bool view_display_test_input_callback(InputEvent* event, void* context) {
+    ViewDisplayTest* instance = context;
+
+    bool consumed = false;
+    if(event->type == InputTypeShort || event->type == InputTypeRepeat) {
+        with_view_model(
+            instance->view,
+            ViewDisplayTestModel * model,
+            {
+                if(event->key == InputKeyLeft && model->test > 0) {
+                    model->test--;
+                    consumed = true;
+                } else if(
+                    event->key == InputKeyRight &&
+                    model->test < (COUNT_OF(view_display_test_tests) - 1)) {
+                    model->test++;
+                    consumed = true;
+                } else if(event->key == InputKeyDown && model->size > 0) {
+                    model->size--;
+                    consumed = true;
+                } else if(event->key == InputKeyUp && model->size < 24) {
+                    model->size++;
+                    consumed = true;
+                } else if(event->key == InputKeyOk) {
+                    model->flip_flop = !model->flip_flop;
+                    consumed = true;
+                }
+            },
+            consumed);
+    }
+
+    return consumed;
+}
+
+static void view_display_test_enter(void* context) {
+    ViewDisplayTest* instance = context;
+    furi_timer_start(instance->timer, furi_kernel_get_tick_frequency() / 32);
+}
+
+static void view_display_test_exit(void* context) {
+    ViewDisplayTest* instance = context;
+    furi_timer_stop(instance->timer);
+}
+
+static void view_display_test_timer_callback(void* context) {
+    ViewDisplayTest* instance = context;
+    with_view_model(
+        instance->view, ViewDisplayTestModel * model, { model->counter++; }, true);
+}
+
+ViewDisplayTest* view_display_test_alloc() {
+    ViewDisplayTest* instance = malloc(sizeof(ViewDisplayTest));
+
+    instance->view = view_alloc();
+    view_set_context(instance->view, instance);
+    view_allocate_model(instance->view, ViewModelTypeLockFree, sizeof(ViewDisplayTestModel));
+    view_set_draw_callback(instance->view, view_display_test_draw_callback);
+    view_set_input_callback(instance->view, view_display_test_input_callback);
+    view_set_enter_callback(instance->view, view_display_test_enter);
+    view_set_exit_callback(instance->view, view_display_test_exit);
+
+    instance->timer =
+        furi_timer_alloc(view_display_test_timer_callback, FuriTimerTypePeriodic, instance);
+
+    return instance;
+}
+
+void view_display_test_free(ViewDisplayTest* instance) {
+    furi_assert(instance);
+
+    furi_timer_free(instance->timer);
+    view_free(instance->view);
+    free(instance);
+}
+
+View* view_display_test_get_view(ViewDisplayTest* instance) {
+    furi_assert(instance);
+    return instance->view;
+}

applications/debug/display_test/view_display_test.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <stdint.h>
+#include <gui/view.h>
+
+typedef struct ViewDisplayTest ViewDisplayTest;
+
+ViewDisplayTest* view_display_test_alloc();
+
+void view_display_test_free(ViewDisplayTest* instance);
+
+View* view_display_test_get_view(ViewDisplayTest* instance);

applications/debug/example_custom_font/application.fam

@@ -0,0 +1,9 @@
+App(
+    appid="example_custom_font",
+    name="Example: custom font",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="example_custom_font_main",
+    requires=["gui"],
+    stack_size=1 * 1024,
+    fap_category="Debug",
+)

applications/debug/example_custom_font/example_custom_font.c

@@ -0,0 +1,98 @@
+#include <furi.h>
+#include <furi_hal.h>
+
+#include <gui/gui.h>
+#include <input/input.h>
+
+//This arrays contains the font itself. You can use any u8g2 font you want
+
+/*
+Fontname: -Raccoon-Fixed4x6-Medium-R-Normal--6-60-75-75-P-40-ISO10646-1
+Copyright: 
+Glyphs: 95/203
+BBX Build Mode: 0
+*/
+const uint8_t u8g2_font_tom_thumb_4x6_tr[725] =
+    "_\0\2\2\2\3\3\4\4\3\6\0\377\5\377\5\0\0\352\1\330\2\270 \5\340\315\0!\6\265\310"
+    "\254\0\42\6\213\313$\25#\10\227\310\244\241\206\12$\10\227\310\215\70b\2%\10\227\310d\324F\1"
+    "&\10\227\310(\65R\22'\5\251\313\10(\6\266\310\251\62)\10\226\310\304\224\24\0*\6\217\312\244"
+    "\16+\7\217\311\245\225\0,\6\212\310)\0-\5\207\312\14.\5\245\310\4/\7\227\310Ve\4\60"
+    "\7\227\310-k\1\61\6\226\310\255\6\62\10\227\310h\220\312\1\63\11\227\310h\220\62X\0\64\10\227"
+    "\310$\65b\1\65\10\227\310\214\250\301\2\66\10\227\310\315\221F\0\67\10\227\310\314TF\0\70\10\227"
+    "\310\214\64\324\10\71\10\227\310\214\64\342\2:\6\255\311\244\0;\7\222\310e\240\0<\10\227\310\246\32"
+    "d\20=\6\217\311l\60>\11\227\310d\220A*\1\77\10\227\310\314\224a\2@\10\227\310UC\3"
+    "\1A\10\227\310UC\251\0B\10\227\310\250\264\322\2C\7\227\310\315\32\10D\10\227\310\250d-\0"
+    "E\10\227\310\214\70\342\0F\10\227\310\214\70b\4G\10\227\310\315\221\222\0H\10\227\310$\65\224\12"
+    "I\7\227\310\254X\15J\7\227\310\226\252\2K\10\227\310$\265\222\12L\7\227\310\304\346\0M\10\227"
+    "\310\244\61\224\12N\10\227\310\244q\250\0O\7\227\310UV\5P\10\227\310\250\264b\4Q\10\227\310"
+    "Uj$\1R\10\227\310\250\64V\1S\10\227\310m\220\301\2T\7\227\310\254\330\2U\7\227\310$"
+    "W\22V\10\227\310$\253L\0W\10\227\310$\65\206\12X\10\227\310$\325R\1Y\10\227\310$U"
+    "V\0Z\7\227\310\314T\16[\7\227\310\214X\16\134\10\217\311d\220A\0]\7\227\310\314r\4^"
+    "\5\213\313\65_\5\207\310\14`\6\212\313\304\0a\7\223\310\310\65\2b\10\227\310D\225\324\2c\7"
+    "\223\310\315\14\4d\10\227\310\246\245\222\0e\6\223\310\235\2f\10\227\310\246\264b\2g\10\227\307\35"
+    "\61%\0h\10\227\310D\225\254\0i\6\265\310\244\1j\10\233\307f\30U\5k\10\227\310\304\264T"
+    "\1l\7\227\310\310\326\0m\7\223\310<R\0n\7\223\310\250d\5o\7\223\310U\252\2p\10\227"
+    "\307\250\244V\4q\10\227\307-\225d\0r\6\223\310\315\22s\10\223\310\215\70\22\0t\10\227\310\245"
+    "\25\243\0u\7\223\310$+\11v\10\223\310$\65R\2w\7\223\310\244q\4x\7\223\310\244\62\25"
+    "y\11\227\307$\225dJ\0z\7\223\310\254\221\6{\10\227\310\251\32D\1|\6\265\310(\1}\11"
+    "\227\310\310\14RR\0~\6\213\313\215\4\0\0\0\4\377\377\0";
+
+// Screen is 128x64 px
+static void app_draw_callback(Canvas* canvas, void* ctx) {
+    UNUSED(ctx);
+
+    canvas_clear(canvas);
+
+    canvas_set_custom_u8g2_font(canvas, u8g2_font_tom_thumb_4x6_tr);
+
+    canvas_draw_str(canvas, 0, 6, "This is a tiny custom font");
+    canvas_draw_str(canvas, 0, 12, "012345.?! ,:;\"\'@#$%");
+}
+
+static void app_input_callback(InputEvent* input_event, void* ctx) {
+    furi_assert(ctx);
+
+    FuriMessageQueue* event_queue = ctx;
+    furi_message_queue_put(event_queue, input_event, FuriWaitForever);
+}
+
+int32_t example_custom_font_main(void* p) {
+    UNUSED(p);
+    FuriMessageQueue* event_queue = furi_message_queue_alloc(8, sizeof(InputEvent));
+
+    // Configure view port
+    ViewPort* view_port = view_port_alloc();
+    view_port_draw_callback_set(view_port, app_draw_callback, view_port);
+    view_port_input_callback_set(view_port, app_input_callback, event_queue);
+
+    // Register view port in GUI
+    Gui* gui = furi_record_open(RECORD_GUI);
+    gui_add_view_port(gui, view_port, GuiLayerFullscreen);
+
+    InputEvent event;
+
+    bool running = true;
+
+    while(running) {
+        if(furi_message_queue_get(event_queue, &event, 100) == FuriStatusOk) {
+            if((event.type == InputTypePress) || (event.type == InputTypeRepeat)) {
+                switch(event.key) {
+                case InputKeyBack:
+                    running = false;
+                    break;
+                default:
+                    break;
+                }
+            }
+        }
+    }
+
+    view_port_enabled_set(view_port, false);
+    gui_remove_view_port(gui, view_port);
+    view_port_free(view_port);
+    furi_message_queue_free(event_queue);
+
+    furi_record_close(RECORD_GUI);
+
+    return 0;
+}

applications/debug/file_browser_test/application.fam

@@ -0,0 +1,12 @@
+App(
+    appid="file_browser_test",
+    name="File Browser Test",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="file_browser_app",
+    cdefines=["APP_FILE_BROWSER_TEST"],
+    requires=["gui"],
+    stack_size=2 * 1024,
+    order=150,
+    fap_category="Debug",
+    fap_icon_assets="icons",
+)

applications/debug/file_browser_test/file_browser_app.c

@@ -0,0 +1,99 @@
+#include "file_browser_app_i.h"
+#include <file_browser_test_icons.h>
+
+#include <gui/modules/file_browser.h>
+#include <storage/storage.h>
+#include <lib/toolbox/path.h>
+#include <furi.h>
+#include <furi_hal.h>
+
+static bool file_browser_app_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    FileBrowserApp* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool file_browser_app_back_event_callback(void* context) {
+    furi_assert(context);
+    FileBrowserApp* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+static void file_browser_app_tick_event_callback(void* context) {
+    furi_assert(context);
+    FileBrowserApp* app = context;
+    scene_manager_handle_tick_event(app->scene_manager);
+}
+
+FileBrowserApp* file_browser_app_alloc(char* arg) {
+    UNUSED(arg);
+    FileBrowserApp* app = malloc(sizeof(FileBrowserApp));
+
+    app->gui = furi_record_open(RECORD_GUI);
+    app->dialogs = furi_record_open(RECORD_DIALOGS);
+
+    app->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(app->view_dispatcher);
+
+    app->scene_manager = scene_manager_alloc(&file_browser_scene_handlers, app);
+
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+    view_dispatcher_set_tick_event_callback(
+        app->view_dispatcher, file_browser_app_tick_event_callback, 500);
+    view_dispatcher_set_custom_event_callback(
+        app->view_dispatcher, file_browser_app_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, file_browser_app_back_event_callback);
+
+    app->widget = widget_alloc();
+
+    app->file_path = furi_string_alloc();
+    app->file_browser = file_browser_alloc(app->file_path);
+    file_browser_configure(app->file_browser, "*", NULL, true, false, &I_badusb_10px, true);
+
+    view_dispatcher_add_view(
+        app->view_dispatcher, FileBrowserAppViewStart, widget_get_view(app->widget));
+    view_dispatcher_add_view(
+        app->view_dispatcher, FileBrowserAppViewResult, widget_get_view(app->widget));
+    view_dispatcher_add_view(
+        app->view_dispatcher, FileBrowserAppViewBrowser, file_browser_get_view(app->file_browser));
+
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    scene_manager_next_scene(app->scene_manager, FileBrowserSceneStart);
+
+    return app;
+}
+
+void file_browser_app_free(FileBrowserApp* app) {
+    furi_assert(app);
+
+    // Views
+    view_dispatcher_remove_view(app->view_dispatcher, FileBrowserAppViewStart);
+    view_dispatcher_remove_view(app->view_dispatcher, FileBrowserAppViewResult);
+    view_dispatcher_remove_view(app->view_dispatcher, FileBrowserAppViewBrowser);
+    widget_free(app->widget);
+    file_browser_free(app->file_browser);
+
+    // View dispatcher
+    view_dispatcher_free(app->view_dispatcher);
+    scene_manager_free(app->scene_manager);
+
+    // Close records
+    furi_record_close(RECORD_GUI);
+    furi_record_close(RECORD_NOTIFICATION);
+    furi_record_close(RECORD_DIALOGS);
+
+    furi_string_free(app->file_path);
+
+    free(app);
+}
+
+int32_t file_browser_app(void* p) {
+    FileBrowserApp* file_browser_app = file_browser_app_alloc((char*)p);
+
+    view_dispatcher_run(file_browser_app->view_dispatcher);
+
+    file_browser_app_free(file_browser_app);
+    return 0;
+}

applications/debug/file_browser_test/file_browser_app_i.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "scenes/file_browser_scene.h"
+
+#include <gui/gui.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+#include <gui/modules/submenu.h>
+#include <gui/modules/file_browser.h>
+#include <dialogs/dialogs.h>
+#include <notification/notification_messages.h>
+#include <gui/modules/variable_item_list.h>
+#include <gui/modules/widget.h>
+
+typedef struct FileBrowserApp FileBrowserApp;
+
+struct FileBrowserApp {
+    Gui* gui;
+    ViewDispatcher* view_dispatcher;
+    SceneManager* scene_manager;
+    DialogsApp* dialogs;
+    Widget* widget;
+    FileBrowser* file_browser;
+
+    FuriString* file_path;
+};
+
+typedef enum {
+    FileBrowserAppViewStart,
+    FileBrowserAppViewBrowser,
+    FileBrowserAppViewResult,
+} FileBrowserAppView;

applications/debug/file_browser_test/scenes/file_browser_scene.c

@@ -0,0 +1,30 @@
+#include "file_browser_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const file_browser_scene_on_enter_handlers[])(void*) = {
+#include "file_browser_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const file_browser_scene_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "file_browser_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const file_browser_scene_on_exit_handlers[])(void* context) = {
+#include "file_browser_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers file_browser_scene_handlers = {
+    .on_enter_handlers = file_browser_scene_on_enter_handlers,
+    .on_event_handlers = file_browser_scene_on_event_handlers,
+    .on_exit_handlers = file_browser_scene_on_exit_handlers,
+    .scene_num = FileBrowserSceneNum,
+};

applications/debug/file_browser_test/scenes/file_browser_scene.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) FileBrowserScene##id,
+typedef enum {
+#include "file_browser_scene_config.h"
+    FileBrowserSceneNum,
+} FileBrowserScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers file_browser_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "file_browser_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "file_browser_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "file_browser_scene_config.h"
+#undef ADD_SCENE

applications/debug/file_browser_test/scenes/file_browser_scene_browser.c

@@ -0,0 +1,40 @@
+#include "../file_browser_app_i.h"
+#include <furi.h>
+
+#define DEFAULT_PATH "/"
+#define EXTENSION "*"
+
+bool file_browser_scene_browser_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    FileBrowserApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        scene_manager_next_scene(app->scene_manager, FileBrowserSceneResult);
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeTick) {
+    }
+    return consumed;
+}
+
+static void file_browser_callback(void* context) {
+    FileBrowserApp* app = context;
+    furi_assert(app);
+    view_dispatcher_send_custom_event(app->view_dispatcher, SceneManagerEventTypeCustom);
+}
+
+void file_browser_scene_browser_on_enter(void* context) {
+    FileBrowserApp* app = context;
+
+    file_browser_set_callback(app->file_browser, file_browser_callback, app);
+
+    file_browser_start(app->file_browser, app->file_path);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FileBrowserAppViewBrowser);
+}
+
+void file_browser_scene_browser_on_exit(void* context) {
+    FileBrowserApp* app = context;
+
+    file_browser_stop(app->file_browser);
+}

applications/debug/file_browser_test/scenes/file_browser_scene_config.h

@@ -0,0 +1,3 @@
+ADD_SCENE(file_browser, start, Start)
+ADD_SCENE(file_browser, browser, Browser)
+ADD_SCENE(file_browser, result, Result)

applications/debug/file_browser_test/scenes/file_browser_scene_result.c

@@ -0,0 +1,41 @@
+#include "../file_browser_app_i.h"
+#include <furi.h>
+
+void file_browser_scene_result_ok_callback(InputType type, void* context) {
+    furi_assert(context);
+    FileBrowserApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, type);
+}
+
+bool file_browser_scene_result_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    //FileBrowserApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeTick) {
+    }
+    return consumed;
+}
+
+void file_browser_scene_result_on_enter(void* context) {
+    FileBrowserApp* app = context;
+
+    widget_add_string_multiline_element(
+        app->widget,
+        64,
+        10,
+        AlignCenter,
+        AlignTop,
+        FontSecondary,
+        furi_string_get_cstr(app->file_path));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FileBrowserAppViewResult);
+}
+
+void file_browser_scene_result_on_exit(void* context) {
+    UNUSED(context);
+    FileBrowserApp* app = context;
+    widget_reset(app->widget);
+}

applications/debug/file_browser_test/scenes/file_browser_scene_start.c

@@ -0,0 +1,46 @@
+#include "../file_browser_app_i.h"
+
+#include <furi_hal.h>
+#include <gui/modules/widget_elements/widget_element_i.h>
+#include <storage/storage.h>
+
+static void
+    file_browser_scene_start_ok_callback(GuiButtonType result, InputType type, void* context) {
+    UNUSED(result);
+    furi_assert(context);
+    FileBrowserApp* app = context;
+    if(type == InputTypeShort) {
+        view_dispatcher_send_custom_event(app->view_dispatcher, type);
+    }
+}
+
+bool file_browser_scene_start_on_event(void* context, SceneManagerEvent event) {
+    FileBrowserApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        furi_string_set(app->file_path, ANY_PATH("badusb/demo_windows.txt"));
+        scene_manager_next_scene(app->scene_manager, FileBrowserSceneBrowser);
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeTick) {
+    }
+    return consumed;
+}
+
+void file_browser_scene_start_on_enter(void* context) {
+    FileBrowserApp* app = context;
+
+    widget_add_string_multiline_element(
+        app->widget, 64, 20, AlignCenter, AlignTop, FontSecondary, "Press OK to start");
+
+    widget_add_button_element(
+        app->widget, GuiButtonTypeCenter, "Ok", file_browser_scene_start_ok_callback, app);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FileBrowserAppViewStart);
+}
+
+void file_browser_scene_start_on_exit(void* context) {
+    UNUSED(context);
+    FileBrowserApp* app = context;
+    widget_reset(app->widget);
+}

applications/debug/keypad_test/application.fam

@@ -0,0 +1,11 @@
+App(
+    appid="keypad_test",
+    name="Keypad Test",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="keypad_test_app",
+    cdefines=["APP_KEYPAD_TEST"],
+    requires=["gui"],
+    stack_size=1 * 1024,
+    order=30,
+    fap_category="Debug",
+)

applications/debug/keypad_test/keypad_test.c

@@ -0,0 +1,157 @@
+#include <furi.h>
+#include <gui/gui.h>
+#include <input/input.h>
+
+#define TAG "KeypadTest"
+
+typedef struct {
+    bool press[5];
+    uint16_t up;
+    uint16_t down;
+    uint16_t left;
+    uint16_t right;
+    uint16_t ok;
+    FuriMutex* mutex;
+} KeypadTestState;
+
+static void keypad_test_reset_state(KeypadTestState* state) {
+    state->left = 0;
+    state->right = 0;
+    state->up = 0;
+    state->down = 0;
+    state->ok = 0;
+}
+
+static void keypad_test_render_callback(Canvas* canvas, void* ctx) {
+    KeypadTestState* state = ctx;
+    furi_mutex_acquire(state->mutex, FuriWaitForever);
+    canvas_clear(canvas);
+    char strings[5][20];
+
+    snprintf(strings[0], 20, "Ok: %d", state->ok);
+    snprintf(strings[1], 20, "L: %d", state->left);
+    snprintf(strings[2], 20, "R: %d", state->right);
+    snprintf(strings[3], 20, "U: %d", state->up);
+    snprintf(strings[4], 20, "D: %d", state->down);
+
+    canvas_set_font(canvas, FontPrimary);
+    canvas_draw_str(canvas, 0, 10, "Keypad test");
+
+    canvas_set_font(canvas, FontSecondary);
+    canvas_draw_str(canvas, 0, 24, strings[1]);
+    canvas_draw_str(canvas, 35, 24, strings[2]);
+    canvas_draw_str(canvas, 0, 36, strings[3]);
+    canvas_draw_str(canvas, 35, 36, strings[4]);
+    canvas_draw_str(canvas, 0, 48, strings[0]);
+    canvas_draw_circle(canvas, 100, 26, 25);
+
+    if(state->press[0]) canvas_draw_disc(canvas, 118, 26, 5);
+    if(state->press[1]) canvas_draw_disc(canvas, 82, 26, 5);
+    if(state->press[2]) canvas_draw_disc(canvas, 100, 8, 5);
+    if(state->press[3]) canvas_draw_disc(canvas, 100, 44, 5);
+    if(state->press[4]) canvas_draw_disc(canvas, 100, 26, 5);
+
+    canvas_draw_str(canvas, 10, 63, "[back] - reset, hold to exit");
+
+    furi_mutex_release(state->mutex);
+}
+
+static void keypad_test_input_callback(InputEvent* input_event, void* ctx) {
+    FuriMessageQueue* event_queue = ctx;
+    furi_message_queue_put(event_queue, input_event, FuriWaitForever);
+}
+
+int32_t keypad_test_app(void* p) {
+    UNUSED(p);
+    FuriMessageQueue* event_queue = furi_message_queue_alloc(32, sizeof(InputEvent));
+    furi_check(event_queue);
+
+    KeypadTestState state = {{false, false, false, false, false}, 0, 0, 0, 0, 0, NULL};
+    state.mutex = furi_mutex_alloc(FuriMutexTypeNormal);
+
+    if(!state.mutex) {
+        FURI_LOG_E(TAG, "cannot create mutex");
+        return 0;
+    }
+
+    ViewPort* view_port = view_port_alloc();
+
+    view_port_draw_callback_set(view_port, keypad_test_render_callback, &state);
+    view_port_input_callback_set(view_port, keypad_test_input_callback, event_queue);
+
+    // Open GUI and register view_port
+    Gui* gui = furi_record_open(RECORD_GUI);
+    gui_add_view_port(gui, view_port, GuiLayerFullscreen);
+
+    InputEvent event;
+    while(furi_message_queue_get(event_queue, &event, FuriWaitForever) == FuriStatusOk) {
+        furi_mutex_acquire(state.mutex, FuriWaitForever);
+        FURI_LOG_I(
+            TAG,
+            "key: %s type: %s",
+            input_get_key_name(event.key),
+            input_get_type_name(event.type));
+
+        if(event.key == InputKeyRight) {
+            if(event.type == InputTypePress) {
+                state.press[0] = true;
+            } else if(event.type == InputTypeRelease) {
+                state.press[0] = false;
+            } else if(event.type == InputTypeShort) {
+                ++state.right;
+            }
+        } else if(event.key == InputKeyLeft) {
+            if(event.type == InputTypePress) {
+                state.press[1] = true;
+            } else if(event.type == InputTypeRelease) {
+                state.press[1] = false;
+            } else if(event.type == InputTypeShort) {
+                ++state.left;
+            }
+        } else if(event.key == InputKeyUp) {
+            if(event.type == InputTypePress) {
+                state.press[2] = true;
+            } else if(event.type == InputTypeRelease) {
+                state.press[2] = false;
+            } else if(event.type == InputTypeShort) {
+                ++state.up;
+            }
+        } else if(event.key == InputKeyDown) {
+            if(event.type == InputTypePress) {
+                state.press[3] = true;
+            } else if(event.type == InputTypeRelease) {
+                state.press[3] = false;
+            } else if(event.type == InputTypeShort) {
+                ++state.down;
+            }
+        } else if(event.key == InputKeyOk) {
+            if(event.type == InputTypePress) {
+                state.press[4] = true;
+            } else if(event.type == InputTypeRelease) {
+                state.press[4] = false;
+            } else if(event.type == InputTypeShort) {
+                ++state.ok;
+            }
+        } else if(event.key == InputKeyBack) {
+            if(event.type == InputTypeLong) {
+                furi_mutex_release(state.mutex);
+                break;
+            } else if(event.type == InputTypeShort) {
+                keypad_test_reset_state(&state);
+            }
+        }
+
+        furi_mutex_release(state.mutex);
+        view_port_update(view_port);
+    }
+
+    // remove & free all stuff created by app
+    gui_remove_view_port(gui, view_port);
+    view_port_free(view_port);
+    furi_message_queue_free(event_queue);
+    furi_mutex_free(state.mutex);
+
+    furi_record_close(RECORD_GUI);
+
+    return 0;
+}

applications/debug/lfrfid_debug/application.fam

@@ -0,0 +1,16 @@
+App(
+    appid="lfrfid_debug",
+    name="LF-RFID Debug",
+    apptype=FlipperAppType.DEBUG,
+    targets=["f7"],
+    entry_point="lfrfid_debug_app",
+    requires=[
+        "gui",
+    ],
+    provides=[
+        "lfrfid_debug",
+    ],
+    stack_size=1 * 1024,
+    order=100,
+    fap_category="Debug",
+)

applications/debug/lfrfid_debug/lfrfid_debug.c

@@ -0,0 +1,81 @@
+#include "lfrfid_debug_i.h"
+
+static bool lfrfid_debug_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    LfRfidDebug* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool lfrfid_debug_back_event_callback(void* context) {
+    furi_assert(context);
+    LfRfidDebug* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+static LfRfidDebug* lfrfid_debug_alloc() {
+    LfRfidDebug* app = malloc(sizeof(LfRfidDebug));
+
+    app->view_dispatcher = view_dispatcher_alloc();
+    app->scene_manager = scene_manager_alloc(&lfrfid_debug_scene_handlers, app);
+    view_dispatcher_enable_queue(app->view_dispatcher);
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+    view_dispatcher_set_custom_event_callback(
+        app->view_dispatcher, lfrfid_debug_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, lfrfid_debug_back_event_callback);
+
+    // Open GUI record
+    app->gui = furi_record_open(RECORD_GUI);
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    // Submenu
+    app->submenu = submenu_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, LfRfidDebugViewSubmenu, submenu_get_view(app->submenu));
+
+    // Tune view
+    app->tune_view = lfrfid_debug_view_tune_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        LfRfidDebugViewTune,
+        lfrfid_debug_view_tune_get_view(app->tune_view));
+
+    return app;
+}
+
+static void lfrfid_debug_free(LfRfidDebug* app) {
+    furi_assert(app);
+
+    // Submenu
+    view_dispatcher_remove_view(app->view_dispatcher, LfRfidDebugViewSubmenu);
+    submenu_free(app->submenu);
+
+    // Tune view
+    view_dispatcher_remove_view(app->view_dispatcher, LfRfidDebugViewTune);
+    lfrfid_debug_view_tune_free(app->tune_view);
+
+    // View Dispatcher
+    view_dispatcher_free(app->view_dispatcher);
+
+    // Scene Manager
+    scene_manager_free(app->scene_manager);
+
+    // GUI
+    furi_record_close(RECORD_GUI);
+    app->gui = NULL;
+
+    free(app);
+}
+
+int32_t lfrfid_debug_app(void* p) {
+    UNUSED(p);
+    LfRfidDebug* app = lfrfid_debug_alloc();
+
+    scene_manager_next_scene(app->scene_manager, LfRfidDebugSceneStart);
+
+    view_dispatcher_run(app->view_dispatcher);
+
+    lfrfid_debug_free(app);
+
+    return 0;
+}

applications/debug/lfrfid_debug/lfrfid_debug_i.h

@@ -0,0 +1,30 @@
+#pragma once
+#include <furi.h>
+#include <furi_hal.h>
+
+#include <gui/gui.h>
+#include <gui/view.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+
+#include <gui/modules/submenu.h>
+
+#include "views/lfrfid_debug_view_tune.h"
+#include "scenes/lfrfid_debug_scene.h"
+
+typedef struct LfRfidDebug LfRfidDebug;
+
+struct LfRfidDebug {
+    Gui* gui;
+    ViewDispatcher* view_dispatcher;
+    SceneManager* scene_manager;
+
+    // Common Views
+    Submenu* submenu;
+    LfRfidTuneView* tune_view;
+};
+
+typedef enum {
+    LfRfidDebugViewSubmenu,
+    LfRfidDebugViewTune,
+} LfRfidDebugView;

applications/debug/lfrfid_debug/scenes/lfrfid_debug_app_scene_start.c

@@ -0,0 +1,44 @@
+#include "../lfrfid_debug_i.h"
+
+typedef enum {
+    SubmenuIndexTune,
+} SubmenuIndex;
+
+static void lfrfid_debug_scene_start_submenu_callback(void* context, uint32_t index) {
+    LfRfidDebug* app = context;
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void lfrfid_debug_scene_start_on_enter(void* context) {
+    LfRfidDebug* app = context;
+    Submenu* submenu = app->submenu;
+
+    submenu_add_item(
+        submenu, "Tune", SubmenuIndexTune, lfrfid_debug_scene_start_submenu_callback, app);
+
+    submenu_set_selected_item(
+        submenu, scene_manager_get_scene_state(app->scene_manager, LfRfidDebugSceneStart));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, LfRfidDebugViewSubmenu);
+}
+
+bool lfrfid_debug_scene_start_on_event(void* context, SceneManagerEvent event) {
+    LfRfidDebug* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == SubmenuIndexTune) {
+            scene_manager_next_scene(app->scene_manager, LfRfidDebugSceneTune);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void lfrfid_debug_scene_start_on_exit(void* context) {
+    LfRfidDebug* app = context;
+
+    submenu_reset(app->submenu);
+}

applications/debug/lfrfid_debug/scenes/lfrfid_debug_app_scene_tune.c

@@ -0,0 +1,48 @@
+#include "../lfrfid_debug_i.h"
+#include <furi_hal.h>
+
+static void comparator_trigger_callback(bool level, void* comp_ctx) {
+    UNUSED(comp_ctx);
+    furi_hal_gpio_write(&gpio_ext_pa7, !level);
+}
+
+void lfrfid_debug_scene_tune_on_enter(void* context) {
+    LfRfidDebug* app = context;
+
+    furi_hal_gpio_init_simple(&gpio_ext_pa7, GpioModeOutputPushPull);
+
+    furi_hal_rfid_comp_set_callback(comparator_trigger_callback, app);
+    furi_hal_rfid_comp_start();
+
+    furi_hal_rfid_pins_read();
+    furi_hal_rfid_tim_read(125000, 0.5);
+    furi_hal_rfid_tim_read_start();
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, LfRfidDebugViewTune);
+}
+
+bool lfrfid_debug_scene_tune_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(event);
+
+    LfRfidDebug* app = context;
+    bool consumed = false;
+
+    if(lfrfid_debug_view_tune_is_dirty(app->tune_view)) {
+        furi_hal_rfid_set_read_period(lfrfid_debug_view_tune_get_arr(app->tune_view));
+        furi_hal_rfid_set_read_pulse(lfrfid_debug_view_tune_get_ccr(app->tune_view));
+    }
+
+    return consumed;
+}
+
+void lfrfid_debug_scene_tune_on_exit(void* context) {
+    UNUSED(context);
+
+    furi_hal_rfid_comp_stop();
+    furi_hal_rfid_comp_set_callback(NULL, NULL);
+
+    furi_hal_gpio_init_simple(&gpio_ext_pa7, GpioModeAnalog);
+    furi_hal_rfid_tim_read_stop();
+    furi_hal_rfid_tim_reset();
+    furi_hal_rfid_pins_reset();
+}

applications/debug/lfrfid_debug/scenes/lfrfid_debug_scene.c

@@ -0,0 +1,30 @@
+#include "lfrfid_debug_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const lfrfid_debug_on_enter_handlers[])(void*) = {
+#include "lfrfid_debug_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const lfrfid_debug_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "lfrfid_debug_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const lfrfid_debug_on_exit_handlers[])(void* context) = {
+#include "lfrfid_debug_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers lfrfid_debug_scene_handlers = {
+    .on_enter_handlers = lfrfid_debug_on_enter_handlers,
+    .on_event_handlers = lfrfid_debug_on_event_handlers,
+    .on_exit_handlers = lfrfid_debug_on_exit_handlers,
+    .scene_num = LfRfidDebugSceneNum,
+};

applications/debug/lfrfid_debug/scenes/lfrfid_debug_scene.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) LfRfidDebugScene##id,
+typedef enum {
+#include "lfrfid_debug_scene_config.h"
+    LfRfidDebugSceneNum,
+} LfRfidDebugScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers lfrfid_debug_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "lfrfid_debug_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "lfrfid_debug_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "lfrfid_debug_scene_config.h"
+#undef ADD_SCENE

applications/debug/lfrfid_debug/scenes/lfrfid_debug_scene_config.h

@@ -0,0 +1,2 @@
+ADD_SCENE(lfrfid_debug, start, Start)
+ADD_SCENE(lfrfid_debug, tune, Tune)

applications/debug/lfrfid_debug/views/lfrfid_debug_view_tune.c

@@ -0,0 +1,234 @@
+#include "lfrfid_debug_view_tune.h"
+#include <gui/elements.h>
+
+#define TEMP_STR_LEN 128
+
+struct LfRfidTuneView {
+    View* view;
+};
+
+typedef struct {
+    bool dirty;
+    bool fine;
+    uint32_t ARR;
+    uint32_t CCR;
+    int pos;
+} LfRfidTuneViewModel;
+
+static void lfrfid_debug_view_tune_draw_callback(Canvas* canvas, void* _model) {
+    LfRfidTuneViewModel* model = _model;
+    canvas_set_color(canvas, ColorBlack);
+
+    if(model->fine) {
+        canvas_draw_box(
+            canvas,
+            128 - canvas_string_width(canvas, "Fine") - 4,
+            0,
+            canvas_string_width(canvas, "Fine") + 4,
+            canvas_current_font_height(canvas) + 1);
+        canvas_set_color(canvas, ColorWhite);
+    }
+    canvas_draw_str_aligned(canvas, 128 - 2, 2, AlignRight, AlignTop, "Fine");
+    canvas_set_color(canvas, ColorBlack);
+
+    char buffer[TEMP_STR_LEN + 1];
+    double freq = ((float)SystemCoreClock / ((float)model->ARR + 1));
+    double duty = ((float)model->CCR + 1) / ((float)model->ARR + 1) * 100.0f;
+    snprintf(
+        buffer,
+        TEMP_STR_LEN,
+        "%sARR: %lu\n"
+        "freq = %.4f\n"
+        "%sCCR: %lu\n"
+        "duty = %.4f",
+        model->pos == 0 ? ">" : "",
+        model->ARR,
+        freq,
+        model->pos == 1 ? ">" : "",
+        model->CCR,
+        duty);
+    elements_multiline_text_aligned(canvas, 2, 2, AlignLeft, AlignTop, buffer);
+}
+
+static void lfrfid_debug_view_tune_button_up(LfRfidTuneView* tune_view) {
+    with_view_model(
+        tune_view->view,
+        LfRfidTuneViewModel * model,
+        {
+            if(model->pos > 0) model->pos--;
+        },
+        true);
+}
+
+static void lfrfid_debug_view_tune_button_down(LfRfidTuneView* tune_view) {
+    with_view_model(
+        tune_view->view,
+        LfRfidTuneViewModel * model,
+        {
+            if(model->pos < 1) model->pos++;
+        },
+        true);
+}
+
+static void lfrfid_debug_view_tune_button_left(LfRfidTuneView* tune_view) {
+    with_view_model(
+        tune_view->view,
+        LfRfidTuneViewModel * model,
+        {
+            if(model->pos == 0) {
+                if(model->fine) {
+                    model->ARR -= 1;
+                } else {
+                    model->ARR -= 10;
+                }
+            } else if(model->pos == 1) {
+                if(model->fine) {
+                    model->CCR -= 1;
+                } else {
+                    model->CCR -= 10;
+                }
+            }
+
+            model->dirty = true;
+        },
+        true);
+}
+
+static void lfrfid_debug_view_tune_button_right(LfRfidTuneView* tune_view) {
+    with_view_model(
+        tune_view->view,
+        LfRfidTuneViewModel * model,
+        {
+            if(model->pos == 0) {
+                if(model->fine) {
+                    model->ARR += 1;
+                } else {
+                    model->ARR += 10;
+                }
+            } else if(model->pos == 1) {
+                if(model->fine) {
+                    model->CCR += 1;
+                } else {
+                    model->CCR += 10;
+                }
+            }
+
+            model->dirty = true;
+        },
+        true);
+}
+
+static void lfrfid_debug_view_tune_button_ok(LfRfidTuneView* tune_view) {
+    with_view_model(
+        tune_view->view, LfRfidTuneViewModel * model, { model->fine = !model->fine; }, true);
+}
+
+static bool lfrfid_debug_view_tune_input_callback(InputEvent* event, void* context) {
+    LfRfidTuneView* tune_view = context;
+    bool consumed = false;
+
+    // Process key presses only
+    if(event->type == InputTypeShort || event->type == InputTypeRepeat) {
+        consumed = true;
+
+        switch(event->key) {
+        case InputKeyLeft:
+            lfrfid_debug_view_tune_button_left(tune_view);
+            break;
+        case InputKeyRight:
+            lfrfid_debug_view_tune_button_right(tune_view);
+            break;
+        case InputKeyUp:
+            lfrfid_debug_view_tune_button_up(tune_view);
+            break;
+        case InputKeyDown:
+            lfrfid_debug_view_tune_button_down(tune_view);
+            break;
+        case InputKeyOk:
+            lfrfid_debug_view_tune_button_ok(tune_view);
+            break;
+        default:
+            consumed = false;
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+LfRfidTuneView* lfrfid_debug_view_tune_alloc() {
+    LfRfidTuneView* tune_view = malloc(sizeof(LfRfidTuneView));
+    tune_view->view = view_alloc();
+    view_set_context(tune_view->view, tune_view);
+    view_allocate_model(tune_view->view, ViewModelTypeLocking, sizeof(LfRfidTuneViewModel));
+
+    with_view_model(
+        tune_view->view,
+        LfRfidTuneViewModel * model,
+        {
+            model->dirty = true;
+            model->fine = false;
+            model->ARR = 511;
+            model->CCR = 255;
+            model->pos = 0;
+        },
+        true);
+
+    view_set_draw_callback(tune_view->view, lfrfid_debug_view_tune_draw_callback);
+    view_set_input_callback(tune_view->view, lfrfid_debug_view_tune_input_callback);
+
+    return tune_view;
+}
+
+void lfrfid_debug_view_tune_free(LfRfidTuneView* tune_view) {
+    view_free(tune_view->view);
+    free(tune_view);
+}
+
+View* lfrfid_debug_view_tune_get_view(LfRfidTuneView* tune_view) {
+    return tune_view->view;
+}
+
+void lfrfid_debug_view_tune_clean(LfRfidTuneView* tune_view) {
+    with_view_model(
+        tune_view->view,
+        LfRfidTuneViewModel * model,
+        {
+            model->dirty = true;
+            model->fine = false;
+            model->ARR = 511;
+            model->CCR = 255;
+            model->pos = 0;
+        },
+        true);
+}
+
+bool lfrfid_debug_view_tune_is_dirty(LfRfidTuneView* tune_view) {
+    bool result = false;
+    with_view_model(
+        tune_view->view,
+        LfRfidTuneViewModel * model,
+        {
+            result = model->dirty;
+            model->dirty = false;
+        },
+        false);
+
+    return result;
+}
+
+uint32_t lfrfid_debug_view_tune_get_arr(LfRfidTuneView* tune_view) {
+    uint32_t result = false;
+    with_view_model(
+        tune_view->view, LfRfidTuneViewModel * model, { result = model->ARR; }, false);
+
+    return result;
+}
+
+uint32_t lfrfid_debug_view_tune_get_ccr(LfRfidTuneView* tune_view) {
+    uint32_t result = false;
+    with_view_model(
+        tune_view->view, LfRfidTuneViewModel * model, { result = model->CCR; }, false);
+
+    return result;
+}

applications/debug/lfrfid_debug/views/lfrfid_debug_view_tune.h

@@ -0,0 +1,18 @@
+#pragma once
+#include <gui/view.h>
+
+typedef struct LfRfidTuneView LfRfidTuneView;
+
+LfRfidTuneView* lfrfid_debug_view_tune_alloc();
+
+void lfrfid_debug_view_tune_free(LfRfidTuneView* tune_view);
+
+View* lfrfid_debug_view_tune_get_view(LfRfidTuneView* tune_view);
+
+void lfrfid_debug_view_tune_clean(LfRfidTuneView* tune_view);
+
+bool lfrfid_debug_view_tune_is_dirty(LfRfidTuneView* tune_view);
+
+uint32_t lfrfid_debug_view_tune_get_arr(LfRfidTuneView* tune_view);
+
+uint32_t lfrfid_debug_view_tune_get_ccr(LfRfidTuneView* tune_view);

applications/debug/locale_test/application.fam

@@ -0,0 +1,11 @@
+App(
+    appid="locale_test",
+    name="Locale Test",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="locale_test_app",
+    cdefines=["APP_LOCALE"],
+    requires=["gui", "locale"],
+    stack_size=2 * 1024,
+    order=70,
+    fap_category="Debug",
+)

applications/debug/locale_test/locale_test.c

@@ -0,0 +1,102 @@
+#include <furi.h>
+#include <gui/gui.h>
+#include <gui/elements.h>
+#include <gui/view_dispatcher.h>
+#include <gui/modules/dialog_ex.h>
+#include <locale/locale.h>
+
+typedef struct {
+    Gui* gui;
+    ViewDispatcher* view_dispatcher;
+    View* view;
+} LocaleTestApp;
+
+static void locale_test_view_draw_callback(Canvas* canvas, void* _model) {
+    UNUSED(_model);
+
+    // Prepare canvas
+    canvas_set_color(canvas, ColorBlack);
+    canvas_set_font(canvas, FontSecondary);
+
+    FuriString* tmp_string = furi_string_alloc();
+
+    float temp = 25.3f;
+    LocaleMeasurementUnits units = locale_get_measurement_unit();
+    if(units == LocaleMeasurementUnitsMetric) {
+        furi_string_printf(tmp_string, "Temp: %5.1fC", (double)temp);
+    } else {
+        temp = locale_celsius_to_fahrenheit(temp);
+        furi_string_printf(tmp_string, "Temp: %5.1fF", (double)temp);
+    }
+    canvas_draw_str(canvas, 0, 10, furi_string_get_cstr(tmp_string));
+
+    FuriHalRtcDateTime datetime;
+    furi_hal_rtc_get_datetime(&datetime);
+
+    locale_format_time(tmp_string, &datetime, locale_get_time_format(), false);
+    canvas_draw_str(canvas, 0, 25, furi_string_get_cstr(tmp_string));
+
+    locale_format_date(tmp_string, &datetime, locale_get_date_format(), "/");
+    canvas_draw_str(canvas, 0, 40, furi_string_get_cstr(tmp_string));
+
+    furi_string_free(tmp_string);
+}
+
+static bool locale_test_view_input_callback(InputEvent* event, void* context) {
+    UNUSED(event);
+    UNUSED(context);
+    return false;
+}
+
+static uint32_t locale_test_exit(void* context) {
+    UNUSED(context);
+    return VIEW_NONE;
+}
+
+static LocaleTestApp* locale_test_alloc() {
+    LocaleTestApp* app = malloc(sizeof(LocaleTestApp));
+
+    // Gui
+    app->gui = furi_record_open(RECORD_GUI);
+
+    // View dispatcher
+    app->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(app->view_dispatcher);
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    // Views
+    app->view = view_alloc();
+    view_set_draw_callback(app->view, locale_test_view_draw_callback);
+    view_set_input_callback(app->view, locale_test_view_input_callback);
+
+    view_set_previous_callback(app->view, locale_test_exit);
+    view_dispatcher_add_view(app->view_dispatcher, 0, app->view);
+    view_dispatcher_switch_to_view(app->view_dispatcher, 0);
+
+    return app;
+}
+
+static void locale_test_free(LocaleTestApp* app) {
+    furi_assert(app);
+
+    // Free views
+    view_dispatcher_remove_view(app->view_dispatcher, 0);
+
+    view_free(app->view);
+    view_dispatcher_free(app->view_dispatcher);
+
+    // Close gui record
+    furi_record_close(RECORD_GUI);
+    app->gui = NULL;
+
+    // Free rest
+    free(app);
+}
+
+int32_t locale_test_app(void* p) {
+    UNUSED(p);
+    LocaleTestApp* app = locale_test_alloc();
+    view_dispatcher_run(app->view_dispatcher);
+    locale_test_free(app);
+    return 0;
+}

applications/debug/rpc_debug_app/application.fam

@@ -0,0 +1,10 @@
+App(
+    appid="rpc_debug",
+    name="RPC Debug",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="rpc_debug_app",
+    requires=["gui", "rpc_start", "notification"],
+    stack_size=2 * 1024,
+    order=10,
+    fap_category="Debug",
+)

applications/debug/rpc_debug_app/rpc_debug_app.c

@@ -0,0 +1,138 @@
+#include "rpc_debug_app.h"
+#include <core/log.h>
+
+#include <string.h>
+
+static bool rpc_debug_app_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    RpcDebugApp* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool rpc_debug_app_back_event_callback(void* context) {
+    furi_assert(context);
+    RpcDebugApp* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+static void rpc_debug_app_tick_event_callback(void* context) {
+    furi_assert(context);
+    RpcDebugApp* app = context;
+    scene_manager_handle_tick_event(app->scene_manager);
+}
+
+static void rpc_debug_app_rpc_command_callback(RpcAppSystemEvent event, void* context) {
+    furi_assert(context);
+    RpcDebugApp* app = context;
+    furi_assert(app->rpc);
+
+    if(event == RpcAppEventSessionClose) {
+        scene_manager_stop(app->scene_manager);
+        view_dispatcher_stop(app->view_dispatcher);
+        rpc_system_app_set_callback(app->rpc, NULL, NULL);
+        app->rpc = NULL;
+    } else if(event == RpcAppEventAppExit) {
+        scene_manager_stop(app->scene_manager);
+        view_dispatcher_stop(app->view_dispatcher);
+        rpc_system_app_confirm(app->rpc, RpcAppEventAppExit, true);
+    } else {
+        rpc_system_app_confirm(app->rpc, event, false);
+    }
+}
+
+static bool rpc_debug_app_rpc_init_rpc(RpcDebugApp* app, const char* args) {
+    bool ret = false;
+    if(args && strlen(args)) {
+        uint32_t rpc = 0;
+        if(sscanf(args, "RPC %lX", &rpc) == 1) {
+            app->rpc = (RpcAppSystem*)rpc;
+            rpc_system_app_set_callback(app->rpc, rpc_debug_app_rpc_command_callback, app);
+            rpc_system_app_send_started(app->rpc);
+            ret = true;
+        }
+    }
+    return ret;
+}
+
+static RpcDebugApp* rpc_debug_app_alloc() {
+    RpcDebugApp* app = malloc(sizeof(RpcDebugApp));
+
+    app->gui = furi_record_open(RECORD_GUI);
+    app->notifications = furi_record_open(RECORD_NOTIFICATION);
+    app->scene_manager = scene_manager_alloc(&rpc_debug_app_scene_handlers, app);
+    app->view_dispatcher = view_dispatcher_alloc();
+
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+    view_dispatcher_set_custom_event_callback(
+        app->view_dispatcher, rpc_debug_app_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, rpc_debug_app_back_event_callback);
+    view_dispatcher_set_tick_event_callback(
+        app->view_dispatcher, rpc_debug_app_tick_event_callback, 100);
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+    view_dispatcher_enable_queue(app->view_dispatcher);
+
+    app->widget = widget_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, RpcDebugAppViewWidget, widget_get_view(app->widget));
+    app->submenu = submenu_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, RpcDebugAppViewSubmenu, submenu_get_view(app->submenu));
+    app->text_box = text_box_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, RpcDebugAppViewTextBox, text_box_get_view(app->text_box));
+    app->text_input = text_input_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, RpcDebugAppViewTextInput, text_input_get_view(app->text_input));
+    app->byte_input = byte_input_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, RpcDebugAppViewByteInput, byte_input_get_view(app->byte_input));
+
+    return app;
+}
+
+static void rpc_debug_app_free(RpcDebugApp* app) {
+    view_dispatcher_remove_view(app->view_dispatcher, RpcDebugAppViewByteInput);
+    view_dispatcher_remove_view(app->view_dispatcher, RpcDebugAppViewTextInput);
+    view_dispatcher_remove_view(app->view_dispatcher, RpcDebugAppViewTextBox);
+    view_dispatcher_remove_view(app->view_dispatcher, RpcDebugAppViewSubmenu);
+    view_dispatcher_remove_view(app->view_dispatcher, RpcDebugAppViewWidget);
+
+    free(app->byte_input);
+    free(app->text_input);
+    free(app->text_box);
+    free(app->submenu);
+    free(app->widget);
+
+    free(app->scene_manager);
+    free(app->view_dispatcher);
+
+    furi_record_close(RECORD_NOTIFICATION);
+    app->notifications = NULL;
+    furi_record_close(RECORD_GUI);
+    app->gui = NULL;
+
+    if(app->rpc) {
+        rpc_system_app_set_callback(app->rpc, NULL, NULL);
+        rpc_system_app_send_exited(app->rpc);
+        app->rpc = NULL;
+    }
+
+    free(app);
+}
+
+int32_t rpc_debug_app(void* args) {
+    RpcDebugApp* app = rpc_debug_app_alloc();
+
+    if(rpc_debug_app_rpc_init_rpc(app, args)) {
+        notification_message(app->notifications, &sequence_display_backlight_on);
+        scene_manager_next_scene(app->scene_manager, RpcDebugAppSceneStart);
+    } else {
+        scene_manager_next_scene(app->scene_manager, RpcDebugAppSceneStartDummy);
+    }
+
+    view_dispatcher_run(app->view_dispatcher);
+
+    rpc_debug_app_free(app);
+    return 0;
+}

applications/debug/rpc_debug_app/rpc_debug_app.h

@@ -0,0 +1,54 @@
+#pragma once
+
+#include <furi.h>
+#include <gui/gui.h>
+#include <gui/view.h>
+#include <gui/scene_manager.h>
+#include <gui/view_dispatcher.h>
+
+#include <gui/modules/widget.h>
+#include <gui/modules/submenu.h>
+#include <gui/modules/text_box.h>
+#include <gui/modules/text_input.h>
+#include <gui/modules/byte_input.h>
+
+#include <rpc/rpc_app.h>
+#include <notification/notification_messages.h>
+
+#include "scenes/rpc_debug_app_scene.h"
+
+#define DATA_STORE_SIZE 64U
+#define TEXT_STORE_SIZE 64U
+
+typedef struct {
+    Gui* gui;
+    RpcAppSystem* rpc;
+    SceneManager* scene_manager;
+    ViewDispatcher* view_dispatcher;
+    NotificationApp* notifications;
+
+    Widget* widget;
+    Submenu* submenu;
+    TextBox* text_box;
+    TextInput* text_input;
+    ByteInput* byte_input;
+
+    char text_store[TEXT_STORE_SIZE];
+    uint8_t data_store[DATA_STORE_SIZE];
+} RpcDebugApp;
+
+typedef enum {
+    RpcDebugAppViewWidget,
+    RpcDebugAppViewSubmenu,
+    RpcDebugAppViewTextBox,
+    RpcDebugAppViewTextInput,
+    RpcDebugAppViewByteInput,
+} RpcDebugAppView;
+
+typedef enum {
+    // Reserve first 100 events for button types and indexes, starting from 0
+    RpcDebugAppCustomEventInputErrorCode = 100,
+    RpcDebugAppCustomEventInputErrorText,
+    RpcDebugAppCustomEventInputDataExchange,
+    RpcDebugAppCustomEventRpcDataExchange,
+} RpcDebugAppCustomEvent;

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene.c

@@ -0,0 +1,30 @@
+#include "rpc_debug_app_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const rpc_debug_app_on_enter_handlers[])(void*) = {
+#include "rpc_debug_app_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const rpc_debug_app_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "rpc_debug_app_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const rpc_debug_app_on_exit_handlers[])(void* context) = {
+#include "rpc_debug_app_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers rpc_debug_app_scene_handlers = {
+    .on_enter_handlers = rpc_debug_app_on_enter_handlers,
+    .on_event_handlers = rpc_debug_app_on_event_handlers,
+    .on_exit_handlers = rpc_debug_app_on_exit_handlers,
+    .scene_num = RpcDebugAppSceneNum,
+};

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) RpcDebugAppScene##id,
+typedef enum {
+#include "rpc_debug_app_scene_config.h"
+    RpcDebugAppSceneNum,
+} RpcDebugAppScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers rpc_debug_app_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "rpc_debug_app_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "rpc_debug_app_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "rpc_debug_app_scene_config.h"
+#undef ADD_SCENE

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene_config.h

@@ -0,0 +1,8 @@
+ADD_SCENE(rpc_debug_app, start, Start)
+ADD_SCENE(rpc_debug_app, start_dummy, StartDummy)
+ADD_SCENE(rpc_debug_app, test_app_error, TestAppError)
+ADD_SCENE(rpc_debug_app, test_data_exchange, TestDataExchange)
+ADD_SCENE(rpc_debug_app, input_error_code, InputErrorCode)
+ADD_SCENE(rpc_debug_app, input_error_text, InputErrorText)
+ADD_SCENE(rpc_debug_app, input_data_exchange, InputDataExchange)
+ADD_SCENE(rpc_debug_app, receive_data_exchange, ReceiveDataExchange)

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene_input_data_exchange.c

@@ -0,0 +1,40 @@
+#include "../rpc_debug_app.h"
+
+static void rpc_debug_app_scene_input_data_exchange_result_callback(void* context) {
+    RpcDebugApp* app = context;
+    view_dispatcher_send_custom_event(
+        app->view_dispatcher, RpcDebugAppCustomEventInputDataExchange);
+}
+
+void rpc_debug_app_scene_input_data_exchange_on_enter(void* context) {
+    RpcDebugApp* app = context;
+    byte_input_set_header_text(app->byte_input, "Enter data to exchange");
+    byte_input_set_result_callback(
+        app->byte_input,
+        rpc_debug_app_scene_input_data_exchange_result_callback,
+        NULL,
+        app,
+        app->data_store,
+        DATA_STORE_SIZE);
+    view_dispatcher_switch_to_view(app->view_dispatcher, RpcDebugAppViewByteInput);
+}
+
+bool rpc_debug_app_scene_input_data_exchange_on_event(void* context, SceneManagerEvent event) {
+    RpcDebugApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == RpcDebugAppCustomEventInputDataExchange) {
+            rpc_system_app_exchange_data(app->rpc, app->data_store, DATA_STORE_SIZE);
+            scene_manager_previous_scene(app->scene_manager);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void rpc_debug_app_scene_input_data_exchange_on_exit(void* context) {
+    RpcDebugApp* app = context;
+    UNUSED(app);
+}

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene_input_error_code.c

@@ -0,0 +1,64 @@
+#include "../rpc_debug_app.h"
+
+static bool rpc_debug_app_scene_input_error_code_validator_callback(
+    const char* text,
+    FuriString* error,
+    void* context) {
+    UNUSED(context);
+
+    for(; *text; ++text) {
+        const char c = *text;
+        if(c < '0' || c > '9') {
+            furi_string_printf(error, "%s", "Please enter\na number!");
+            return false;
+        }
+    }
+
+    return true;
+}
+
+static void rpc_debug_app_scene_input_error_code_result_callback(void* context) {
+    RpcDebugApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, RpcDebugAppCustomEventInputErrorCode);
+}
+
+void rpc_debug_app_scene_input_error_code_on_enter(void* context) {
+    RpcDebugApp* app = context;
+    strncpy(app->text_store, "666", TEXT_STORE_SIZE);
+    text_input_set_header_text(app->text_input, "Enter error code");
+    text_input_set_validator(
+        app->text_input, rpc_debug_app_scene_input_error_code_validator_callback, NULL);
+    text_input_set_result_callback(
+        app->text_input,
+        rpc_debug_app_scene_input_error_code_result_callback,
+        app,
+        app->text_store,
+        TEXT_STORE_SIZE,
+        true);
+    view_dispatcher_switch_to_view(app->view_dispatcher, RpcDebugAppViewTextInput);
+}
+
+bool rpc_debug_app_scene_input_error_code_on_event(void* context, SceneManagerEvent event) {
+    RpcDebugApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == RpcDebugAppCustomEventInputErrorCode) {
+            char* end;
+            int error_code = strtol(app->text_store, &end, 10);
+            if(!*end) {
+                rpc_system_app_set_error_code(app->rpc, error_code);
+            }
+            scene_manager_previous_scene(app->scene_manager);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void rpc_debug_app_scene_input_error_code_on_exit(void* context) {
+    RpcDebugApp* app = context;
+    text_input_reset(app->text_input);
+    text_input_set_validator(app->text_input, NULL, NULL);
+}

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene_input_error_text.c

@@ -0,0 +1,40 @@
+#include "../rpc_debug_app.h"
+
+static void rpc_debug_app_scene_input_error_text_result_callback(void* context) {
+    RpcDebugApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, RpcDebugAppCustomEventInputErrorText);
+}
+
+void rpc_debug_app_scene_input_error_text_on_enter(void* context) {
+    RpcDebugApp* app = context;
+    strncpy(app->text_store, "I'm a scary error message!", TEXT_STORE_SIZE);
+    text_input_set_header_text(app->text_input, "Enter error text");
+    text_input_set_result_callback(
+        app->text_input,
+        rpc_debug_app_scene_input_error_text_result_callback,
+        app,
+        app->text_store,
+        TEXT_STORE_SIZE,
+        true);
+    view_dispatcher_switch_to_view(app->view_dispatcher, RpcDebugAppViewTextInput);
+}
+
+bool rpc_debug_app_scene_input_error_text_on_event(void* context, SceneManagerEvent event) {
+    RpcDebugApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == RpcDebugAppCustomEventInputErrorText) {
+            rpc_system_app_set_error_text(app->rpc, app->text_store);
+            scene_manager_previous_scene(app->scene_manager);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void rpc_debug_app_scene_input_error_text_on_exit(void* context) {
+    RpcDebugApp* app = context;
+    text_input_reset(app->text_input);
+}

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene_receive_data_exchange.c

@@ -0,0 +1,70 @@
+#include "../rpc_debug_app.h"
+
+static void rpc_debug_app_scene_start_format_hex(
+    const uint8_t* data,
+    size_t data_size,
+    char* buf,
+    size_t buf_size) {
+    furi_assert(data);
+    furi_assert(buf);
+
+    const size_t byte_width = 3;
+    const size_t line_width = 7;
+
+    data_size = MIN(data_size, buf_size / (byte_width + 1));
+
+    for(size_t i = 0; i < data_size; ++i) {
+        char* p = buf + (i * byte_width);
+        char sep = !((i + 1) % line_width) ? '\n' : ' ';
+        snprintf(p, byte_width + 1, "%02X%c", data[i], sep);
+    }
+
+    buf[buf_size - 1] = '\0';
+}
+
+static void rpc_debug_app_scene_receive_data_exchange_callback(
+    const uint8_t* data,
+    size_t data_size,
+    void* context) {
+    RpcDebugApp* app = context;
+    if(data) {
+        rpc_debug_app_scene_start_format_hex(data, data_size, app->text_store, TEXT_STORE_SIZE);
+    } else {
+        strncpy(app->text_store, "<Data empty>", TEXT_STORE_SIZE);
+    }
+    view_dispatcher_send_custom_event(app->view_dispatcher, RpcDebugAppCustomEventRpcDataExchange);
+}
+
+void rpc_debug_app_scene_receive_data_exchange_on_enter(void* context) {
+    RpcDebugApp* app = context;
+    strncpy(app->text_store, "Received data will appear here...", TEXT_STORE_SIZE);
+
+    text_box_set_text(app->text_box, app->text_store);
+    text_box_set_font(app->text_box, TextBoxFontHex);
+
+    rpc_system_app_set_data_exchange_callback(
+        app->rpc, rpc_debug_app_scene_receive_data_exchange_callback, app);
+    view_dispatcher_switch_to_view(app->view_dispatcher, RpcDebugAppViewTextBox);
+}
+
+bool rpc_debug_app_scene_receive_data_exchange_on_event(void* context, SceneManagerEvent event) {
+    RpcDebugApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == RpcDebugAppCustomEventRpcDataExchange) {
+            notification_message(app->notifications, &sequence_blink_cyan_100);
+            notification_message(app->notifications, &sequence_display_backlight_on);
+            text_box_set_text(app->text_box, app->text_store);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void rpc_debug_app_scene_receive_data_exchange_on_exit(void* context) {
+    RpcDebugApp* app = context;
+    text_box_reset(app->text_box);
+    rpc_system_app_set_data_exchange_callback(app->rpc, NULL, NULL);
+}

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene_start.c

@@ -0,0 +1,57 @@
+#include "../rpc_debug_app.h"
+
+enum SubmenuIndex {
+    SubmenuIndexTestAppError,
+    SubmenuIndexTestDataExchange,
+};
+
+static void rpc_debug_app_scene_start_submenu_callback(void* context, uint32_t index) {
+    RpcDebugApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void rpc_debug_app_scene_start_on_enter(void* context) {
+    RpcDebugApp* app = context;
+    Submenu* submenu = app->submenu;
+
+    submenu_add_item(
+        submenu,
+        "Test App Error",
+        SubmenuIndexTestAppError,
+        rpc_debug_app_scene_start_submenu_callback,
+        app);
+    submenu_add_item(
+        submenu,
+        "Test Data Exchange",
+        SubmenuIndexTestDataExchange,
+        rpc_debug_app_scene_start_submenu_callback,
+        app);
+
+    submenu_set_selected_item(submenu, SubmenuIndexTestAppError);
+    view_dispatcher_switch_to_view(app->view_dispatcher, RpcDebugAppViewSubmenu);
+}
+
+bool rpc_debug_app_scene_start_on_event(void* context, SceneManagerEvent event) {
+    RpcDebugApp* app = context;
+    SceneManager* scene_manager = app->scene_manager;
+
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        const uint32_t submenu_index = event.event;
+        if(submenu_index == SubmenuIndexTestAppError) {
+            scene_manager_next_scene(scene_manager, RpcDebugAppSceneTestAppError);
+            consumed = true;
+        } else if(submenu_index == SubmenuIndexTestDataExchange) {
+            scene_manager_next_scene(scene_manager, RpcDebugAppSceneTestDataExchange);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void rpc_debug_app_scene_start_on_exit(void* context) {
+    RpcDebugApp* app = context;
+    submenu_reset(app->submenu);
+}

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene_start_dummy.c

@@ -0,0 +1,30 @@
+#include "../rpc_debug_app.h"
+
+void rpc_debug_app_scene_start_dummy_on_enter(void* context) {
+    RpcDebugApp* app = context;
+    widget_add_text_box_element(
+        app->widget,
+        0,
+        0,
+        128,
+        64,
+        AlignCenter,
+        AlignCenter,
+        "This application\nis meant to be run\nin \e#RPC\e# mode.",
+        false);
+    view_dispatcher_switch_to_view(app->view_dispatcher, RpcDebugAppViewWidget);
+}
+
+bool rpc_debug_app_scene_start_dummy_on_event(void* context, SceneManagerEvent event) {
+    RpcDebugApp* app = context;
+    UNUSED(app);
+    UNUSED(event);
+
+    bool consumed = false;
+    return consumed;
+}
+
+void rpc_debug_app_scene_start_dummy_on_exit(void* context) {
+    RpcDebugApp* app = context;
+    widget_reset(app->widget);
+}

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene_test_app_error.c

@@ -0,0 +1,57 @@
+#include "../rpc_debug_app.h"
+
+typedef enum {
+    SubmenuIndexSetErrorCode,
+    SubmenuIndexSetErrorText,
+} SubmenuIndex;
+
+static void rpc_debug_app_scene_test_app_error_submenu_callback(void* context, uint32_t index) {
+    RpcDebugApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void rpc_debug_app_scene_test_app_error_on_enter(void* context) {
+    RpcDebugApp* app = context;
+    Submenu* submenu = app->submenu;
+
+    submenu_add_item(
+        submenu,
+        "Set Error Code",
+        SubmenuIndexSetErrorCode,
+        rpc_debug_app_scene_test_app_error_submenu_callback,
+        app);
+    submenu_add_item(
+        submenu,
+        "Set Error Text",
+        SubmenuIndexSetErrorText,
+        rpc_debug_app_scene_test_app_error_submenu_callback,
+        app);
+
+    submenu_set_selected_item(submenu, SubmenuIndexSetErrorCode);
+    view_dispatcher_switch_to_view(app->view_dispatcher, RpcDebugAppViewSubmenu);
+}
+
+bool rpc_debug_app_scene_test_app_error_on_event(void* context, SceneManagerEvent event) {
+    RpcDebugApp* app = context;
+    SceneManager* scene_manager = app->scene_manager;
+
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        const uint32_t submenu_index = event.event;
+        if(submenu_index == SubmenuIndexSetErrorCode) {
+            scene_manager_next_scene(scene_manager, RpcDebugAppSceneInputErrorCode);
+            consumed = true;
+        } else if(submenu_index == SubmenuIndexSetErrorText) {
+            scene_manager_next_scene(scene_manager, RpcDebugAppSceneInputErrorText);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void rpc_debug_app_scene_test_app_error_on_exit(void* context) {
+    RpcDebugApp* app = context;
+    submenu_reset(app->submenu);
+}

applications/debug/rpc_debug_app/scenes/rpc_debug_app_scene_test_data_exchange.c

@@ -0,0 +1,58 @@
+#include "../rpc_debug_app.h"
+
+typedef enum {
+    SubmenuIndexSendData,
+    SubmenuIndexReceiveData,
+} SubmenuIndex;
+
+static void
+    rpc_debug_app_scene_test_data_exchange_submenu_callback(void* context, uint32_t index) {
+    RpcDebugApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void rpc_debug_app_scene_test_data_exchange_on_enter(void* context) {
+    RpcDebugApp* app = context;
+    Submenu* submenu = app->submenu;
+
+    submenu_add_item(
+        submenu,
+        "Send Data",
+        SubmenuIndexSendData,
+        rpc_debug_app_scene_test_data_exchange_submenu_callback,
+        app);
+    submenu_add_item(
+        submenu,
+        "Receive Data",
+        SubmenuIndexReceiveData,
+        rpc_debug_app_scene_test_data_exchange_submenu_callback,
+        app);
+
+    submenu_set_selected_item(submenu, SubmenuIndexSendData);
+    view_dispatcher_switch_to_view(app->view_dispatcher, RpcDebugAppViewSubmenu);
+}
+
+bool rpc_debug_app_scene_test_data_exchange_on_event(void* context, SceneManagerEvent event) {
+    RpcDebugApp* app = context;
+    SceneManager* scene_manager = app->scene_manager;
+
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        const uint32_t submenu_index = event.event;
+        if(submenu_index == SubmenuIndexSendData) {
+            scene_manager_next_scene(scene_manager, RpcDebugAppSceneInputDataExchange);
+            consumed = true;
+        } else if(submenu_index == SubmenuIndexReceiveData) {
+            scene_manager_next_scene(scene_manager, RpcDebugAppSceneReceiveDataExchange);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void rpc_debug_app_scene_test_data_exchange_on_exit(void* context) {
+    RpcDebugApp* app = context;
+    submenu_reset(app->submenu);
+}

applications/debug/text_box_test/application.fam

@@ -0,0 +1,11 @@
+App(
+    appid="text_box_test",
+    name="Text Box Test",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="text_box_test_app",
+    cdefines=["APP_TEXT_BOX_TEST"],
+    requires=["gui"],
+    stack_size=1 * 1024,
+    order=140,
+    fap_category="Debug",
+)

applications/debug/text_box_test/text_box_test.c

@@ -0,0 +1,129 @@
+#include <furi.h>
+#include <gui/gui.h>
+#include <input/input.h>
+#include <gui/elements.h>
+
+#define TAG "TextBoxTest"
+
+static void text_box_center_top_secondary_128x22(Canvas* canvas) {
+    canvas_draw_frame(canvas, 0, 0, 128, 22);
+    elements_text_box(canvas, 0, 0, 128, 22, AlignCenter, AlignTop, "secondary font test", false);
+}
+
+static void text_box_right_bottom_bold_128x22(Canvas* canvas) {
+    canvas_draw_frame(canvas, 0, 0, 128, 22);
+    elements_text_box(
+        canvas, 0, 0, 128, 22, AlignRight, AlignBottom, "\e#Bold font test\e#", false);
+}
+
+static void text_box_left_center_mixed_80x50(Canvas* canvas) {
+    canvas_draw_frame(canvas, 0, 0, 80, 50);
+    elements_text_box(
+        canvas,
+        0,
+        0,
+        80,
+        50,
+        AlignLeft,
+        AlignCenter,
+        "\e#Never\e# gonna give you up\n\e!Never\e! gonna let you down",
+        false);
+}
+
+static void text_box_center_center_secondary_110x44(Canvas* canvas) {
+    canvas_draw_frame(canvas, 4, 20, 110, 30);
+    elements_text_box(
+        canvas,
+        4,
+        20,
+        110,
+        30,
+        AlignCenter,
+        AlignCenter,
+        "Loooooooooooooo0000000ooong file name from happy 100500 Flipper 0wners",
+        true);
+}
+
+static void (*text_box_test_render[])(Canvas* canvas) = {
+    text_box_center_top_secondary_128x22,
+    text_box_right_bottom_bold_128x22,
+    text_box_left_center_mixed_80x50,
+    text_box_center_center_secondary_110x44,
+};
+
+typedef struct {
+    uint32_t idx;
+    FuriMutex* mutex;
+} TextBoxTestState;
+
+static void text_box_test_render_callback(Canvas* canvas, void* ctx) {
+    TextBoxTestState* state = ctx;
+    furi_mutex_acquire(state->mutex, FuriWaitForever);
+    canvas_clear(canvas);
+
+    text_box_test_render[state->idx](canvas);
+
+    furi_mutex_release(state->mutex);
+}
+
+static void text_box_test_input_callback(InputEvent* input_event, void* ctx) {
+    FuriMessageQueue* event_queue = ctx;
+    furi_message_queue_put(event_queue, input_event, FuriWaitForever);
+}
+
+int32_t text_box_test_app(void* p) {
+    UNUSED(p);
+    FuriMessageQueue* event_queue = furi_message_queue_alloc(32, sizeof(InputEvent));
+    furi_check(event_queue);
+
+    TextBoxTestState state = {.idx = 0, .mutex = NULL};
+    state.mutex = furi_mutex_alloc(FuriMutexTypeNormal);
+
+    if(!state.mutex) {
+        FURI_LOG_E(TAG, "Cannot create mutex");
+        return 0;
+    }
+
+    ViewPort* view_port = view_port_alloc();
+
+    view_port_draw_callback_set(view_port, text_box_test_render_callback, &state);
+    view_port_input_callback_set(view_port, text_box_test_input_callback, event_queue);
+
+    // Open GUI and register view_port
+    Gui* gui = furi_record_open(RECORD_GUI);
+    gui_add_view_port(gui, view_port, GuiLayerFullscreen);
+
+    uint32_t test_renders_num = COUNT_OF(text_box_test_render);
+    InputEvent event;
+    while(furi_message_queue_get(event_queue, &event, FuriWaitForever) == FuriStatusOk) {
+        furi_mutex_acquire(state.mutex, FuriWaitForever);
+
+        if(event.type == InputTypeShort) {
+            if(event.key == InputKeyRight) {
+                if(state.idx < test_renders_num - 1) {
+                    state.idx++;
+                }
+            } else if(event.key == InputKeyLeft) {
+                if(state.idx > 0) {
+                    state.idx--;
+                }
+            } else if(event.key == InputKeyBack) {
+                furi_mutex_release(state.mutex);
+                break;
+            }
+        }
+
+        furi_mutex_release(state.mutex);
+        view_port_update(view_port);
+    }
+
+    // remove & free all stuff created by app
+    gui_remove_view_port(gui, view_port);
+    view_port_free(view_port);
+    furi_message_queue_free(event_queue);
+    furi_mutex_free(state.mutex);
+
+    furi_record_close(RECORD_GUI);
+
+    return 0;
+}

applications/debug/uart_echo/application.fam

@@ -0,0 +1,11 @@
+App(
+    appid="uart_echo",
+    name="UART Echo",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="uart_echo_app",
+    cdefines=["APP_UART_ECHO"],
+    requires=["gui"],
+    stack_size=2 * 1024,
+    order=70,
+    fap_category="Debug",
+)

applications/debug/uart_echo/uart_echo.c

@@ -0,0 +1,271 @@
+#include <furi.h>
+#include <gui/gui.h>
+#include <notification/notification.h>
+#include <notification/notification_messages.h>
+#include <gui/elements.h>
+#include <furi_hal_uart.h>
+#include <furi_hal_console.h>
+#include <gui/view_dispatcher.h>
+#include <gui/modules/dialog_ex.h>
+
+#define LINES_ON_SCREEN 6
+#define COLUMNS_ON_SCREEN 21
+
+typedef struct UartDumpModel UartDumpModel;
+
+typedef struct {
+    Gui* gui;
+    NotificationApp* notification;
+    ViewDispatcher* view_dispatcher;
+    View* view;
+    FuriThread* worker_thread;
+    FuriStreamBuffer* rx_stream;
+} UartEchoApp;
+
+typedef struct {
+    FuriString* text;
+} ListElement;
+
+struct UartDumpModel {
+    ListElement* list[LINES_ON_SCREEN];
+    uint8_t line;
+
+    char last_char;
+    bool escape;
+};
+
+typedef enum {
+    WorkerEventReserved = (1 << 0), // Reserved for StreamBuffer internal event
+    WorkerEventStop = (1 << 1),
+    WorkerEventRx = (1 << 2),
+} WorkerEventFlags;
+
+#define WORKER_EVENTS_MASK (WorkerEventStop | WorkerEventRx)
+
+const NotificationSequence sequence_notification = {
+    &message_display_backlight_on,
+    &message_green_255,
+    &message_delay_10,
+    NULL,
+};
+
+static void uart_echo_view_draw_callback(Canvas* canvas, void* _model) {
+    UartDumpModel* model = _model;
+
+    // Prepare canvas
+    canvas_clear(canvas);
+    canvas_set_color(canvas, ColorBlack);
+    canvas_set_font(canvas, FontKeyboard);
+
+    for(size_t i = 0; i < LINES_ON_SCREEN; i++) {
+        canvas_draw_str(
+            canvas,
+            0,
+            (i + 1) * (canvas_current_font_height(canvas) - 1),
+            furi_string_get_cstr(model->list[i]->text));
+
+        if(i == model->line) {
+            uint8_t width =
+                canvas_string_width(canvas, furi_string_get_cstr(model->list[i]->text));
+
+            canvas_draw_box(
+                canvas,
+                width,
+                (i) * (canvas_current_font_height(canvas) - 1) + 2,
+                2,
+                canvas_current_font_height(canvas) - 2);
+        }
+    }
+}
+
+static bool uart_echo_view_input_callback(InputEvent* event, void* context) {
+    UNUSED(event);
+    UNUSED(context);
+    return false;
+}
+
+static uint32_t uart_echo_exit(void* context) {
+    UNUSED(context);
+    return VIEW_NONE;
+}
+
+static void uart_echo_on_irq_cb(UartIrqEvent ev, uint8_t data, void* context) {
+    furi_assert(context);
+    UartEchoApp* app = context;
+
+    if(ev == UartIrqEventRXNE) {
+        furi_stream_buffer_send(app->rx_stream, &data, 1, 0);
+        furi_thread_flags_set(furi_thread_get_id(app->worker_thread), WorkerEventRx);
+    }
+}
+
+static void uart_echo_push_to_list(UartDumpModel* model, const char data) {
+    if(model->escape) {
+        // escape code end with letter
+        if((data >= 'a' && data <= 'z') || (data >= 'A' && data <= 'Z')) {
+            model->escape = false;
+        }
+    } else if(data == '[' && model->last_char == '\e') {
+        // "Esc[" is a escape code
+        model->escape = true;
+    } else if((data >= ' ' && data <= '~') || (data == '\n' || data == '\r')) {
+        bool new_string_needed = false;
+        if(furi_string_size(model->list[model->line]->text) >= COLUMNS_ON_SCREEN) {
+            new_string_needed = true;
+        } else if((data == '\n' || data == '\r')) {
+            // pack line breaks
+            if(model->last_char != '\n' && model->last_char != '\r') {
+                new_string_needed = true;
+            }
+        }
+
+        if(new_string_needed) {
+            if((model->line + 1) < LINES_ON_SCREEN) {
+                model->line += 1;
+            } else {
+                ListElement* first = model->list[0];
+
+                for(size_t i = 1; i < LINES_ON_SCREEN; i++) {
+                    model->list[i - 1] = model->list[i];
+                }
+
+                furi_string_reset(first->text);
+                model->list[model->line] = first;
+            }
+        }
+
+        if(data != '\n' && data != '\r') {
+            furi_string_push_back(model->list[model->line]->text, data);
+        }
+    }
+    model->last_char = data;
+}
+
+static int32_t uart_echo_worker(void* context) {
+    furi_assert(context);
+    UartEchoApp* app = context;
+
+    while(1) {
+        uint32_t events =
+            furi_thread_flags_wait(WORKER_EVENTS_MASK, FuriFlagWaitAny, FuriWaitForever);
+        furi_check((events & FuriFlagError) == 0);
+
+        if(events & WorkerEventStop) break;
+        if(events & WorkerEventRx) {
+            size_t length = 0;
+            do {
+                uint8_t data[64];
+                length = furi_stream_buffer_receive(app->rx_stream, data, 64, 0);
+                if(length > 0) {
+                    furi_hal_uart_tx(FuriHalUartIdUSART1, data, length);
+                    with_view_model(
+                        app->view,
+                        UartDumpModel * model,
+                        {
+                            for(size_t i = 0; i < length; i++) {
+                                uart_echo_push_to_list(model, data[i]);
+                            }
+                        },
+                        false);
+                }
+            } while(length > 0);
+
+            notification_message(app->notification, &sequence_notification);
+            with_view_model(
+                app->view, UartDumpModel * model, { UNUSED(model); }, true);
+        }
+    }
+
+    return 0;
+}
+
+static UartEchoApp* uart_echo_app_alloc() {
+    UartEchoApp* app = malloc(sizeof(UartEchoApp));
+
+    app->rx_stream = furi_stream_buffer_alloc(2048, 1);
+
+    // Gui
+    app->gui = furi_record_open(RECORD_GUI);
+    app->notification = furi_record_open(RECORD_NOTIFICATION);
+
+    // View dispatcher
+    app->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(app->view_dispatcher);
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    // Views
+    app->view = view_alloc();
+    view_set_draw_callback(app->view, uart_echo_view_draw_callback);
+    view_set_input_callback(app->view, uart_echo_view_input_callback);
+    view_allocate_model(app->view, ViewModelTypeLocking, sizeof(UartDumpModel));
+    with_view_model(
+        app->view,
+        UartDumpModel * model,
+        {
+            for(size_t i = 0; i < LINES_ON_SCREEN; i++) {
+                model->line = 0;
+                model->escape = false;
+                model->list[i] = malloc(sizeof(ListElement));
+                model->list[i]->text = furi_string_alloc();
+            }
+        },
+        true);
+
+    view_set_previous_callback(app->view, uart_echo_exit);
+    view_dispatcher_add_view(app->view_dispatcher, 0, app->view);
+    view_dispatcher_switch_to_view(app->view_dispatcher, 0);
+
+    app->worker_thread = furi_thread_alloc_ex("UsbUartWorker", 1024, uart_echo_worker, app);
+    furi_thread_start(app->worker_thread);
+
+    // Enable uart listener
+    furi_hal_console_disable();
+    furi_hal_uart_set_br(FuriHalUartIdUSART1, 115200);
+    furi_hal_uart_set_irq_cb(FuriHalUartIdUSART1, uart_echo_on_irq_cb, app);
+
+    return app;
+}
+
+static void uart_echo_app_free(UartEchoApp* app) {
+    furi_assert(app);
+
+    furi_hal_console_enable(); // this will also clear IRQ callback so thread is no longer referenced
+
+    furi_thread_flags_set(furi_thread_get_id(app->worker_thread), WorkerEventStop);
+    furi_thread_join(app->worker_thread);
+    furi_thread_free(app->worker_thread);
+
+    // Free views
+    view_dispatcher_remove_view(app->view_dispatcher, 0);
+
+    with_view_model(
+        app->view,
+        UartDumpModel * model,
+        {
+            for(size_t i = 0; i < LINES_ON_SCREEN; i++) {
+                furi_string_free(model->list[i]->text);
+                free(model->list[i]);
+            }
+        },
+        true);
+    view_free(app->view);
+    view_dispatcher_free(app->view_dispatcher);
+
+    // Close gui record
+    furi_record_close(RECORD_GUI);
+    furi_record_close(RECORD_NOTIFICATION);
+    app->gui = NULL;
+
+    furi_stream_buffer_free(app->rx_stream);
+
+    // Free rest
+    free(app);
+}
+
+int32_t uart_echo_app(void* p) {
+    UNUSED(p);
+    UartEchoApp* app = uart_echo_app_alloc();
+    view_dispatcher_run(app->view_dispatcher);
+    uart_echo_app_free(app);
+    return 0;
+}

applications/debug/unit_tests/application.fam

@@ -0,0 +1,18 @@
+App(
+    appid="unit_tests",
+    apptype=FlipperAppType.STARTUP,
+    entry_point="unit_tests_on_system_start",
+    cdefines=["APP_UNIT_TESTS"],
+    provides=["delay_test"],
+    order=100,
+)
+
+App(
+    appid="delay_test",
+    name="Delay Test",
+    apptype=FlipperAppType.SYSTEM,
+    entry_point="delay_test_app",
+    stack_size=1 * 1024,
+    requires=["unit_tests"],
+    order=110,
+)

applications/debug/unit_tests/bt/bt_test.c

@@ -0,0 +1,110 @@
+#include <furi.h>
+#include <furi_hal.h>
+#include "../minunit.h"
+
+#include <bt/bt_service/bt_keys_storage.h>
+#include <storage/storage.h>
+
+#define BT_TEST_KEY_STORAGE_FILE_PATH EXT_PATH("unit_tests/bt_test.keys")
+#define BT_TEST_NVM_RAM_BUFF_SIZE (507 * 4) // The same as in ble NVM storage
+
+typedef struct {
+    Storage* storage;
+    BtKeysStorage* bt_keys_storage;
+    uint8_t* nvm_ram_buff_dut;
+    uint8_t* nvm_ram_buff_ref;
+} BtTest;
+
+BtTest* bt_test = NULL;
+
+void bt_test_alloc() {
+    bt_test = malloc(sizeof(BtTest));
+    bt_test->storage = furi_record_open(RECORD_STORAGE);
+    bt_test->nvm_ram_buff_dut = malloc(BT_TEST_NVM_RAM_BUFF_SIZE);
+    bt_test->nvm_ram_buff_ref = malloc(BT_TEST_NVM_RAM_BUFF_SIZE);
+    bt_test->bt_keys_storage = bt_keys_storage_alloc(BT_TEST_KEY_STORAGE_FILE_PATH);
+    bt_keys_storage_set_ram_params(
+        bt_test->bt_keys_storage, bt_test->nvm_ram_buff_dut, BT_TEST_NVM_RAM_BUFF_SIZE);
+}
+
+void bt_test_free() {
+    furi_assert(bt_test);
+    free(bt_test->nvm_ram_buff_ref);
+    free(bt_test->nvm_ram_buff_dut);
+    bt_keys_storage_free(bt_test->bt_keys_storage);
+    furi_record_close(RECORD_STORAGE);
+    free(bt_test);
+    bt_test = NULL;
+}
+
+static void bt_test_keys_storage_profile() {
+    // Emulate nvm change on initial connection
+    const int nvm_change_size_on_connection = 88;
+    for(size_t i = 0; i < nvm_change_size_on_connection; i++) {
+        bt_test->nvm_ram_buff_dut[i] = rand();
+        bt_test->nvm_ram_buff_ref[i] = bt_test->nvm_ram_buff_dut[i];
+    }
+    // Emulate update storage on initial connect
+    mu_assert(
+        bt_keys_storage_update(
+            bt_test->bt_keys_storage, bt_test->nvm_ram_buff_dut, nvm_change_size_on_connection),
+        "Failed to update key storage on initial connect");
+    memset(bt_test->nvm_ram_buff_dut, 0, BT_TEST_NVM_RAM_BUFF_SIZE);
+    mu_assert(bt_keys_storage_load(bt_test->bt_keys_storage), "Failed to load NVM");
+    mu_assert(
+        memcmp(
+            bt_test->nvm_ram_buff_ref, bt_test->nvm_ram_buff_dut, nvm_change_size_on_connection) ==
+            0,
+        "Wrong buffer loaded");
+
+    const int nvm_disconnect_update_offset = 84;
+    const int nvm_disconnect_update_size = 324;
+    const int nvm_total_size = nvm_change_size_on_connection -
+                               (nvm_change_size_on_connection - nvm_disconnect_update_offset) +
+                               nvm_disconnect_update_size;
+    // Emulate update storage on initial disconnect
+    for(size_t i = nvm_disconnect_update_offset;
+        i < nvm_disconnect_update_offset + nvm_disconnect_update_size;
+        i++) {
+        bt_test->nvm_ram_buff_dut[i] = rand();
+        bt_test->nvm_ram_buff_ref[i] = bt_test->nvm_ram_buff_dut[i];
+    }
+    mu_assert(
+        bt_keys_storage_update(
+            bt_test->bt_keys_storage,
+            &bt_test->nvm_ram_buff_dut[nvm_disconnect_update_offset],
+            nvm_disconnect_update_size),
+        "Failed to update key storage on initial disconnect");
+    memset(bt_test->nvm_ram_buff_dut, 0, BT_TEST_NVM_RAM_BUFF_SIZE);
+    mu_assert(bt_keys_storage_load(bt_test->bt_keys_storage), "Failed to load NVM");
+    mu_assert(
+        memcmp(bt_test->nvm_ram_buff_ref, bt_test->nvm_ram_buff_dut, nvm_total_size) == 0,
+        "Wrong buffer loaded");
+}
+
+static void bt_test_keys_remove_test_file() {
+    mu_assert(
+        storage_simply_remove(bt_test->storage, BT_TEST_KEY_STORAGE_FILE_PATH),
+        "Can't remove test file");
+}
+
+MU_TEST(bt_test_keys_storage_serial_profile) {
+    furi_assert(bt_test);
+
+    bt_test_keys_remove_test_file();
+    bt_test_keys_storage_profile();
+    bt_test_keys_remove_test_file();
+}
+
+MU_TEST_SUITE(test_bt) {
+    bt_test_alloc();
+
+    MU_RUN_TEST(bt_test_keys_storage_serial_profile);
+
+    bt_test_free();
+}
+
+int run_minunit_test_bt() {
+    MU_RUN_SUITE(test_bt);
+    return MU_EXIT_CODE;
+}

applications/debug/unit_tests/flipper_format/flipper_format_string_test.c

@@ -0,0 +1,337 @@
+#include <furi.h>
+#include <flipper_format/flipper_format.h>
+#include <flipper_format/flipper_format_i.h>
+#include <toolbox/stream/stream.h>
+#include <storage/storage.h>
+#include "../minunit.h"
+
+static const char* test_filetype = "Flipper Format test";
+static const uint32_t test_version = 666;
+
+static const char* test_string_key = "String data";
+static const char* test_string_data = "String";
+static const char* test_string_updated_data = "New string";
+static const char* test_string_updated_2_data = "And some more";
+
+static const char* test_int_key = "Int32 data";
+static const int32_t test_int_data[] = {1234, -6345, 7813, 0};
+static const int32_t test_int_updated_data[] = {-1337, 69};
+static const int32_t test_int_updated_2_data[] = {-3, -2, -1, 0, 1, 2, 3};
+
+static const char* test_uint_key = "Uint32 data";
+static const uint32_t test_uint_data[] = {1234, 0, 5678, 9098, 7654321};
+static const uint32_t test_uint_updated_data[] = {8, 800, 555, 35, 35};
+static const uint32_t test_uint_updated_2_data[] = {20, 21};
+
+static const char* test_float_key = "Float data";
+static const float test_float_data[] = {1.5f, 1000.0f};
+static const float test_float_updated_data[] = {1.2f};
+static const float test_float_updated_2_data[] = {0.01f, 0.0f, -51.6f};
+
+static const char* test_hex_key = "Hex data";
+static const uint8_t test_hex_data[] = {0xDE, 0xAD, 0xBE};
+static const uint8_t test_hex_updated_data[] = {0xFE, 0xCA};
+static const uint8_t test_hex_updated_2_data[] = {0xCA, 0xCA, 0x05};
+
+static const char* test_hex_new_key = "New Hex data";
+static const uint8_t test_hex_new_data[] = {0xFF, 0x6A, 0x91};
+
+static const char* test_data_nix = "Filetype: Flipper Format test\n"
+                                   "Version: 666\n"
+                                   "# This is comment\n"
+                                   "String data: String\n"
+                                   "Int32 data: 1234 -6345 7813 0\n"
+                                   "Uint32 data: 1234 0 5678 9098 7654321\n"
+                                   "Float data: 1.5 1000.0\n"
+                                   "Hex data: DE AD BE";
+
+static const char* test_data_win = "Filetype: Flipper Format test\r\n"
+                                   "Version: 666\r\n"
+                                   "# This is comment\r\n"
+                                   "String data: String\r\n"
+                                   "Int32 data: 1234 -6345 7813 0\r\n"
+                                   "Uint32 data: 1234 0 5678 9098 7654321\r\n"
+                                   "Float data: 1.5 1000.0\r\n"
+                                   "Hex data: DE AD BE";
+
+#define ARRAY_W_COUNT(x) (x), (COUNT_OF(x))
+#define ARRAY_W_BSIZE(x) (x), (sizeof(x))
+
+MU_TEST_1(flipper_format_read_and_update_test, FlipperFormat* flipper_format) {
+    FuriString* tmpstr;
+    uint32_t version;
+    uint32_t uint32_data[COUNT_OF(test_uint_data)];
+    int32_t int32_data[COUNT_OF(test_int_data)];
+    float float_data[COUNT_OF(test_float_data)];
+    uint8_t hex_data[COUNT_OF(test_hex_data)];
+
+    uint32_t count;
+
+    // key exist test
+    size_t position_before = stream_tell(flipper_format_get_raw_stream(flipper_format));
+    mu_check(flipper_format_key_exist(flipper_format, test_hex_key));
+    mu_assert_int_eq(position_before, stream_tell(flipper_format_get_raw_stream(flipper_format)));
+
+    mu_check(!flipper_format_key_exist(flipper_format, "invalid key"));
+    mu_assert_int_eq(position_before, stream_tell(flipper_format_get_raw_stream(flipper_format)));
+
+    // stream seek to end test
+    mu_check(flipper_format_seek_to_end(flipper_format));
+    mu_assert_int_eq(
+        stream_size(flipper_format_get_raw_stream(flipper_format)),
+        stream_tell(flipper_format_get_raw_stream(flipper_format)));
+
+    // key exist test
+    position_before = stream_tell(flipper_format_get_raw_stream(flipper_format));
+    mu_check(flipper_format_key_exist(flipper_format, test_hex_key));
+    mu_assert_int_eq(position_before, stream_tell(flipper_format_get_raw_stream(flipper_format)));
+
+    mu_check(!flipper_format_key_exist(flipper_format, "invalid key"));
+    mu_assert_int_eq(position_before, stream_tell(flipper_format_get_raw_stream(flipper_format)));
+
+    // rewind
+    mu_check(flipper_format_rewind(flipper_format));
+
+    // key exist test
+    position_before = stream_tell(flipper_format_get_raw_stream(flipper_format));
+    mu_check(flipper_format_key_exist(flipper_format, test_hex_key));
+    mu_assert_int_eq(position_before, stream_tell(flipper_format_get_raw_stream(flipper_format)));
+
+    mu_check(!flipper_format_key_exist(flipper_format, "invalid key"));
+    mu_assert_int_eq(position_before, stream_tell(flipper_format_get_raw_stream(flipper_format)));
+
+    // read test
+    tmpstr = furi_string_alloc();
+
+    mu_check(flipper_format_read_header(flipper_format, tmpstr, &version));
+    mu_assert_string_eq(test_filetype, furi_string_get_cstr(tmpstr));
+    mu_assert_int_eq(test_version, version);
+
+    mu_check(flipper_format_read_string(flipper_format, test_string_key, tmpstr));
+    mu_assert_string_eq(test_string_data, furi_string_get_cstr(tmpstr));
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_int_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_int_data), count);
+    mu_check(flipper_format_read_int32(flipper_format, test_int_key, ARRAY_W_COUNT(int32_data)));
+    mu_check(memcmp(test_int_data, ARRAY_W_BSIZE(int32_data)) == 0);
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_uint_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_uint_data), count);
+    mu_check(
+        flipper_format_read_uint32(flipper_format, test_uint_key, ARRAY_W_COUNT(uint32_data)));
+    mu_check(memcmp(test_uint_data, ARRAY_W_BSIZE(uint32_data)) == 0);
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_float_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_float_data), count);
+    mu_check(flipper_format_read_float(flipper_format, test_float_key, ARRAY_W_COUNT(float_data)));
+    mu_check(memcmp(test_float_data, ARRAY_W_BSIZE(float_data)) == 0);
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_hex_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_hex_data), count);
+    mu_check(flipper_format_read_hex(flipper_format, test_hex_key, ARRAY_W_COUNT(hex_data)));
+    mu_check(memcmp(test_hex_data, ARRAY_W_BSIZE(hex_data)) == 0);
+
+    mu_check(!flipper_format_read_string(flipper_format, "Key that doesn't exist", tmpstr));
+
+    furi_string_free(tmpstr);
+
+    // update data
+    mu_check(flipper_format_rewind(flipper_format));
+    mu_check(flipper_format_update_string_cstr(
+        flipper_format, test_string_key, test_string_updated_data));
+    mu_check(flipper_format_update_int32(
+        flipper_format, test_int_key, ARRAY_W_COUNT(test_int_updated_data)));
+    mu_check(flipper_format_update_uint32(
+        flipper_format, test_uint_key, ARRAY_W_COUNT(test_uint_updated_data)));
+    mu_check(flipper_format_update_float(
+        flipper_format, test_float_key, ARRAY_W_COUNT(test_float_updated_data)));
+    mu_check(flipper_format_update_hex(
+        flipper_format, test_hex_key, ARRAY_W_COUNT(test_hex_updated_data)));
+
+    // read updated data test
+    uint32_t uint32_updated_data[COUNT_OF(test_uint_updated_data)];
+    int32_t int32_updated_data[COUNT_OF(test_int_updated_data)];
+    float float_updated_data[COUNT_OF(test_float_updated_data)];
+    uint8_t hex_updated_data[COUNT_OF(test_hex_updated_data)];
+
+    mu_check(flipper_format_rewind(flipper_format));
+    tmpstr = furi_string_alloc();
+
+    mu_check(flipper_format_read_header(flipper_format, tmpstr, &version));
+    mu_assert_string_eq(test_filetype, furi_string_get_cstr(tmpstr));
+    mu_assert_int_eq(test_version, version);
+
+    mu_check(flipper_format_read_string(flipper_format, test_string_key, tmpstr));
+    mu_assert_string_eq(test_string_updated_data, furi_string_get_cstr(tmpstr));
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_int_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_int_updated_data), count);
+    mu_check(flipper_format_read_int32(
+        flipper_format, test_int_key, ARRAY_W_COUNT(int32_updated_data)));
+    mu_check(memcmp(test_int_updated_data, ARRAY_W_BSIZE(int32_updated_data)) == 0);
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_uint_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_uint_updated_data), count);
+    mu_check(flipper_format_read_uint32(
+        flipper_format, test_uint_key, ARRAY_W_COUNT(uint32_updated_data)));
+    mu_check(memcmp(test_uint_updated_data, ARRAY_W_BSIZE(uint32_updated_data)) == 0);
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_float_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_float_updated_data), count);
+    mu_check(flipper_format_read_float(
+        flipper_format, test_float_key, ARRAY_W_COUNT(float_updated_data)));
+    mu_check(memcmp(test_float_updated_data, ARRAY_W_BSIZE(float_updated_data)) == 0);
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_hex_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_hex_updated_data), count);
+    mu_check(
+        flipper_format_read_hex(flipper_format, test_hex_key, ARRAY_W_COUNT(hex_updated_data)));
+    mu_check(memcmp(test_hex_updated_data, ARRAY_W_BSIZE(hex_updated_data)) == 0);
+
+    mu_check(!flipper_format_read_string(flipper_format, "Key that doesn't exist", tmpstr));
+
+    furi_string_free(tmpstr);
+
+    // update data
+    mu_check(flipper_format_rewind(flipper_format));
+    mu_check(flipper_format_insert_or_update_string_cstr(
+        flipper_format, test_string_key, test_string_updated_2_data));
+    mu_check(flipper_format_insert_or_update_int32(
+        flipper_format, test_int_key, ARRAY_W_COUNT(test_int_updated_2_data)));
+    mu_check(flipper_format_insert_or_update_uint32(
+        flipper_format, test_uint_key, ARRAY_W_COUNT(test_uint_updated_2_data)));
+    mu_check(flipper_format_insert_or_update_float(
+        flipper_format, test_float_key, ARRAY_W_COUNT(test_float_updated_2_data)));
+    mu_check(flipper_format_insert_or_update_hex(
+        flipper_format, test_hex_key, ARRAY_W_COUNT(test_hex_updated_2_data)));
+    mu_check(flipper_format_insert_or_update_hex(
+        flipper_format, test_hex_new_key, ARRAY_W_COUNT(test_hex_new_data)));
+
+    uint32_t uint32_updated_2_data[COUNT_OF(test_uint_updated_2_data)];
+    int32_t int32_updated_2_data[COUNT_OF(test_int_updated_2_data)];
+    float float_updated_2_data[COUNT_OF(test_float_updated_2_data)];
+    uint8_t hex_updated_2_data[COUNT_OF(test_hex_updated_2_data)];
+    uint8_t hex_new_data[COUNT_OF(test_hex_new_data)];
+
+    mu_check(flipper_format_rewind(flipper_format));
+    tmpstr = furi_string_alloc();
+
+    mu_check(flipper_format_read_header(flipper_format, tmpstr, &version));
+    mu_assert_string_eq(test_filetype, furi_string_get_cstr(tmpstr));
+    mu_assert_int_eq(test_version, version);
+
+    mu_check(flipper_format_read_string(flipper_format, test_string_key, tmpstr));
+    mu_assert_string_eq(test_string_updated_2_data, furi_string_get_cstr(tmpstr));
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_int_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_int_updated_2_data), count);
+    mu_check(flipper_format_read_int32(
+        flipper_format, test_int_key, ARRAY_W_COUNT(int32_updated_2_data)));
+    mu_check(memcmp(test_int_updated_2_data, ARRAY_W_BSIZE(int32_updated_2_data)) == 0);
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_uint_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_uint_updated_2_data), count);
+    mu_check(flipper_format_read_uint32(
+        flipper_format, test_uint_key, ARRAY_W_COUNT(uint32_updated_2_data)));
+    mu_check(memcmp(test_uint_updated_2_data, ARRAY_W_BSIZE(uint32_updated_2_data)) == 0);
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_float_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_float_updated_2_data), count);
+    mu_check(flipper_format_read_float(
+        flipper_format, test_float_key, ARRAY_W_COUNT(float_updated_2_data)));
+    mu_check(memcmp(test_float_updated_2_data, ARRAY_W_BSIZE(float_updated_2_data)) == 0);
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_hex_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_hex_updated_2_data), count);
+    mu_check(
+        flipper_format_read_hex(flipper_format, test_hex_key, ARRAY_W_COUNT(hex_updated_2_data)));
+    mu_check(memcmp(test_hex_updated_2_data, ARRAY_W_BSIZE(hex_updated_2_data)) == 0);
+
+    mu_check(flipper_format_get_value_count(flipper_format, test_hex_new_key, &count));
+    mu_assert_int_eq(COUNT_OF(test_hex_new_data), count);
+    mu_check(
+        flipper_format_read_hex(flipper_format, test_hex_new_key, ARRAY_W_COUNT(hex_new_data)));
+    mu_check(memcmp(test_hex_new_data, ARRAY_W_BSIZE(hex_new_data)) == 0);
+
+    mu_check(!flipper_format_read_string(flipper_format, "Key that doesn't exist", tmpstr));
+
+    furi_string_free(tmpstr);
+
+    // delete key test
+    mu_check(flipper_format_rewind(flipper_format));
+    mu_check(flipper_format_delete_key(flipper_format, test_uint_key));
+
+    // deleted key read test
+    mu_check(flipper_format_rewind(flipper_format));
+    mu_check(!flipper_format_read_uint32(
+        flipper_format, test_uint_key, ARRAY_W_COUNT(uint32_updated_data)));
+}
+
+MU_TEST(flipper_format_string_test) {
+    FlipperFormat* flipper_format = flipper_format_string_alloc();
+    Stream* stream = flipper_format_get_raw_stream(flipper_format);
+
+    mu_check(flipper_format_write_header_cstr(flipper_format, test_filetype, test_version));
+    mu_check(flipper_format_write_comment_cstr(flipper_format, "This is comment"));
+    mu_check(flipper_format_write_string_cstr(flipper_format, test_string_key, test_string_data));
+    mu_check(
+        flipper_format_write_int32(flipper_format, test_int_key, ARRAY_W_COUNT(test_int_data)));
+    mu_check(
+        flipper_format_write_uint32(flipper_format, test_uint_key, ARRAY_W_COUNT(test_uint_data)));
+    mu_check(flipper_format_write_float(
+        flipper_format, test_float_key, ARRAY_W_COUNT(test_float_data)));
+    mu_check(flipper_format_write_hex(flipper_format, test_hex_key, ARRAY_W_COUNT(test_hex_data)));
+
+    MU_RUN_TEST_1(flipper_format_read_and_update_test, flipper_format);
+
+    stream_clean(stream);
+    stream_write_cstring(stream, test_data_nix);
+    MU_RUN_TEST_1(flipper_format_read_and_update_test, flipper_format);
+
+    stream_clean(stream);
+    stream_write_cstring(stream, test_data_win);
+    MU_RUN_TEST_1(flipper_format_read_and_update_test, flipper_format);
+
+    flipper_format_free(flipper_format);
+}
+
+MU_TEST(flipper_format_file_test) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    FlipperFormat* flipper_format = flipper_format_file_alloc(storage);
+    mu_check(flipper_format_file_open_always(flipper_format, EXT_PATH("flipper.fff")));
+    Stream* stream = flipper_format_get_raw_stream(flipper_format);
+
+    mu_check(flipper_format_write_header_cstr(flipper_format, test_filetype, test_version));
+    mu_check(flipper_format_write_comment_cstr(flipper_format, "This is comment"));
+    mu_check(flipper_format_write_string_cstr(flipper_format, test_string_key, test_string_data));
+    mu_check(
+        flipper_format_write_int32(flipper_format, test_int_key, ARRAY_W_COUNT(test_int_data)));
+    mu_check(
+        flipper_format_write_uint32(flipper_format, test_uint_key, ARRAY_W_COUNT(test_uint_data)));
+    mu_check(flipper_format_write_float(
+        flipper_format, test_float_key, ARRAY_W_COUNT(test_float_data)));
+    mu_check(flipper_format_write_hex(flipper_format, test_hex_key, ARRAY_W_COUNT(test_hex_data)));
+
+    MU_RUN_TEST_1(flipper_format_read_and_update_test, flipper_format);
+
+    stream_clean(stream);
+    stream_write_cstring(stream, test_data_nix);
+    MU_RUN_TEST_1(flipper_format_read_and_update_test, flipper_format);
+
+    stream_clean(stream);
+    stream_write_cstring(stream, test_data_win);
+    MU_RUN_TEST_1(flipper_format_read_and_update_test, flipper_format);
+
+    flipper_format_free(flipper_format);
+    furi_record_close(RECORD_STORAGE);
+}
+
+MU_TEST_SUITE(flipper_format_string_suite) {
+    MU_RUN_TEST(flipper_format_string_test);
+    MU_RUN_TEST(flipper_format_file_test);
+}
+
+int run_minunit_test_flipper_format_string() {
+    MU_RUN_SUITE(flipper_format_string_suite);
+    return MU_EXIT_CODE;
+}

applications/debug/unit_tests/flipper_format/flipper_format_test.c

@@ -0,0 +1,551 @@
+#include <furi.h>
+#include <flipper_format/flipper_format.h>
+#include <flipper_format/flipper_format_i.h>
+#include <toolbox/stream/stream.h>
+#include "../minunit.h"
+
+#define TEST_DIR TEST_DIR_NAME "/"
+#define TEST_DIR_NAME EXT_PATH("unit_tests_tmp")
+
+static const char* test_filetype = "Flipper File test";
+static const uint32_t test_version = 666;
+
+static const char* test_string_key = "String data";
+static const char* test_string_data = "String";
+static const char* test_string_updated_data = "New string";
+
+static const char* test_int_key = "Int32 data";
+static const int32_t test_int_data[] = {1234, -6345, 7813, 0};
+static const int32_t test_int_updated_data[] = {-1337, 69};
+
+static const char* test_uint_key = "Uint32 data";
+static const uint32_t test_uint_data[] = {1234, 0, 5678, 9098, 7654321};
+static const uint32_t test_uint_updated_data[] = {8, 800, 555, 35, 35};
+
+static const char* test_float_key = "Float data";
+static const float test_float_data[] = {1.5f, 1000.0f};
+static const float test_float_updated_data[] = {1.2f};
+
+static const char* test_bool_key = "Bool data";
+static const bool test_bool_data[] = {true, false};
+static const bool test_bool_updated_data[] = {false, true, true};
+
+static const char* test_hex_key = "Hex data";
+static const uint8_t test_hex_data[] = {0xDE, 0xAD, 0xBE};
+static const uint8_t test_hex_updated_data[] = {0xFE, 0xCA};
+
+#define READ_TEST_NIX "ff_nix.test"
+static const char* test_data_nix = "Filetype: Flipper File test\n"
+                                   "Version: 666\n"
+                                   "# This is comment\n"
+                                   "String data: String\n"
+                                   "Int32 data: 1234 -6345 7813 0\n"
+                                   "Uint32 data: 1234 0 5678 9098 7654321\n"
+                                   "Float data: 1.5 1000.0\n"
+                                   "Bool data: true false\n"
+                                   "Hex data: DE AD BE";
+
+#define READ_TEST_WIN "ff_win.test"
+static const char* test_data_win = "Filetype: Flipper File test\r\n"
+                                   "Version: 666\r\n"
+                                   "# This is comment\r\n"
+                                   "String data: String\r\n"
+                                   "Int32 data: 1234 -6345 7813 0\r\n"
+                                   "Uint32 data: 1234 0 5678 9098 7654321\r\n"
+                                   "Float data: 1.5 1000.0\r\n"
+                                   "Bool data: true false\r\n"
+                                   "Hex data: DE AD BE";
+
+#define READ_TEST_FLP "ff_flp.test"
+#define READ_TEST_ODD "ff_oddities.test"
+static const char* test_data_odd = "Filetype: Flipper File test\n"
+                                   // Tabs before newline
+                                   "Version: 666\t\t\n"
+                                   "# This is comment\n"
+                                   // Windows newline in a UNIX file
+                                   "String data: String\r\n"
+                                   // Trailing whitespace
+                                   "Int32 data: 1234 -6345 7813 0 \n"
+                                   // Extra whitespace
+                                   "Uint32 data:   1234  0   5678   9098  7654321  \n"
+                                   // Mixed whitespace
+                                   "Float data: 1.5\t \t1000.0\n"
+                                   // Leading tabs after key
+                                   "Bool data:\t\ttrue   false\n"
+                                   // Mixed trailing whitespace
+                                   "Hex data: DE AD BE\t    ";
+
+// data created by user on linux machine
+static const char* test_file_linux = TEST_DIR READ_TEST_NIX;
+// data created by user on windows machine
+static const char* test_file_windows = TEST_DIR READ_TEST_WIN;
+// data created by flipper itself
+static const char* test_file_flipper = TEST_DIR READ_TEST_FLP;
+// data containing odd user input
+static const char* test_file_oddities = TEST_DIR READ_TEST_ODD;
+
+static bool storage_write_string(const char* path, const char* data) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    File* file = storage_file_alloc(storage);
+    bool result = false;
+
+    do {
+        if(!storage_file_open(file, path, FSAM_WRITE, FSOM_CREATE_ALWAYS)) break;
+        if(storage_file_write(file, data, strlen(data)) != strlen(data)) break;
+
+        result = true;
+    } while(false);
+
+    storage_file_close(file);
+    storage_file_free(file);
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+static void tests_setup() {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    mu_assert(storage_simply_remove_recursive(storage, TEST_DIR_NAME), "Cannot clean data");
+    mu_assert(storage_simply_mkdir(storage, TEST_DIR_NAME), "Cannot create dir");
+    furi_record_close(RECORD_STORAGE);
+}
+
+static void tests_teardown() {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    mu_assert(storage_simply_remove_recursive(storage, TEST_DIR_NAME), "Cannot clean data");
+    furi_record_close(RECORD_STORAGE);
+}
+
+static bool test_read(const char* file_name) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    bool result = false;
+
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+    FuriString* string_value;
+    string_value = furi_string_alloc();
+    uint32_t uint32_value;
+    void* scratchpad = malloc(512);
+
+    do {
+        if(!flipper_format_file_open_existing(file, file_name)) break;
+
+        if(!flipper_format_read_header(file, string_value, &uint32_value)) break;
+        if(furi_string_cmp_str(string_value, test_filetype) != 0) break;
+        if(uint32_value != test_version) break;
+
+        if(!flipper_format_read_string(file, test_string_key, string_value)) break;
+        if(furi_string_cmp_str(string_value, test_string_data) != 0) break;
+
+        if(!flipper_format_get_value_count(file, test_int_key, &uint32_value)) break;
+        if(uint32_value != COUNT_OF(test_int_data)) break;
+        if(!flipper_format_read_int32(file, test_int_key, scratchpad, uint32_value)) break;
+        if(memcmp(scratchpad, test_int_data, sizeof(int32_t) * COUNT_OF(test_int_data)) != 0)
+            break;
+
+        if(!flipper_format_get_value_count(file, test_uint_key, &uint32_value)) break;
+        if(uint32_value != COUNT_OF(test_uint_data)) break;
+        if(!flipper_format_read_uint32(file, test_uint_key, scratchpad, uint32_value)) break;
+        if(memcmp(scratchpad, test_uint_data, sizeof(uint32_t) * COUNT_OF(test_uint_data)) != 0)
+            break;
+
+        if(!flipper_format_get_value_count(file, test_float_key, &uint32_value)) break;
+        if(uint32_value != COUNT_OF(test_float_data)) break;
+        if(!flipper_format_read_float(file, test_float_key, scratchpad, uint32_value)) break;
+        if(memcmp(scratchpad, test_float_data, sizeof(float) * COUNT_OF(test_float_data)) != 0)
+            break;
+
+        if(!flipper_format_get_value_count(file, test_bool_key, &uint32_value)) break;
+        if(uint32_value != COUNT_OF(test_bool_data)) break;
+        if(!flipper_format_read_bool(file, test_bool_key, scratchpad, uint32_value)) break;
+        if(memcmp(scratchpad, test_bool_data, sizeof(bool) * COUNT_OF(test_bool_data)) != 0) break;
+
+        if(!flipper_format_get_value_count(file, test_hex_key, &uint32_value)) break;
+        if(uint32_value != COUNT_OF(test_hex_data)) break;
+        if(!flipper_format_read_hex(file, test_hex_key, scratchpad, uint32_value)) break;
+        if(memcmp(scratchpad, test_hex_data, sizeof(uint8_t) * COUNT_OF(test_hex_data)) != 0)
+            break;
+
+        result = true;
+    } while(false);
+
+    free(scratchpad);
+    furi_string_free(string_value);
+
+    flipper_format_free(file);
+
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+static bool test_read_updated(const char* file_name) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    bool result = false;
+
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+    FuriString* string_value;
+    string_value = furi_string_alloc();
+    uint32_t uint32_value;
+    void* scratchpad = malloc(512);
+
+    do {
+        if(!flipper_format_file_open_existing(file, file_name)) break;
+
+        if(!flipper_format_read_header(file, string_value, &uint32_value)) break;
+        if(furi_string_cmp_str(string_value, test_filetype) != 0) break;
+        if(uint32_value != test_version) break;
+
+        if(!flipper_format_read_string(file, test_string_key, string_value)) break;
+        if(furi_string_cmp_str(string_value, test_string_updated_data) != 0) break;
+
+        if(!flipper_format_get_value_count(file, test_int_key, &uint32_value)) break;
+        if(uint32_value != COUNT_OF(test_int_updated_data)) break;
+        if(!flipper_format_read_int32(file, test_int_key, scratchpad, uint32_value)) break;
+        if(memcmp(
+               scratchpad,
+               test_int_updated_data,
+               sizeof(int32_t) * COUNT_OF(test_int_updated_data)) != 0)
+            break;
+
+        if(!flipper_format_get_value_count(file, test_uint_key, &uint32_value)) break;
+        if(uint32_value != COUNT_OF(test_uint_updated_data)) break;
+        if(!flipper_format_read_uint32(file, test_uint_key, scratchpad, uint32_value)) break;
+        if(memcmp(
+               scratchpad,
+               test_uint_updated_data,
+               sizeof(uint32_t) * COUNT_OF(test_uint_updated_data)) != 0)
+            break;
+
+        if(!flipper_format_get_value_count(file, test_float_key, &uint32_value)) break;
+        if(uint32_value != COUNT_OF(test_float_updated_data)) break;
+        if(!flipper_format_read_float(file, test_float_key, scratchpad, uint32_value)) break;
+        if(memcmp(
+               scratchpad,
+               test_float_updated_data,
+               sizeof(float) * COUNT_OF(test_float_updated_data)) != 0)
+            break;
+
+        if(!flipper_format_get_value_count(file, test_bool_key, &uint32_value)) break;
+        if(uint32_value != COUNT_OF(test_bool_updated_data)) break;
+        if(!flipper_format_read_bool(file, test_bool_key, scratchpad, uint32_value)) break;
+        if(memcmp(
+               scratchpad,
+               test_bool_updated_data,
+               sizeof(bool) * COUNT_OF(test_bool_updated_data)) != 0)
+            break;
+
+        if(!flipper_format_get_value_count(file, test_hex_key, &uint32_value)) break;
+        if(uint32_value != COUNT_OF(test_hex_updated_data)) break;
+        if(!flipper_format_read_hex(file, test_hex_key, scratchpad, uint32_value)) break;
+        if(memcmp(
+               scratchpad,
+               test_hex_updated_data,
+               sizeof(uint8_t) * COUNT_OF(test_hex_updated_data)) != 0)
+            break;
+
+        result = true;
+    } while(false);
+
+    free(scratchpad);
+    furi_string_free(string_value);
+
+    flipper_format_free(file);
+
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+static bool test_write(const char* file_name) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    bool result = false;
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+
+    do {
+        if(!flipper_format_file_open_always(file, file_name)) break;
+        if(!flipper_format_write_header_cstr(file, test_filetype, test_version)) break;
+        if(!flipper_format_write_comment_cstr(file, "This is comment")) break;
+        if(!flipper_format_write_string_cstr(file, test_string_key, test_string_data)) break;
+        if(!flipper_format_write_int32(file, test_int_key, test_int_data, COUNT_OF(test_int_data)))
+            break;
+        if(!flipper_format_write_uint32(
+               file, test_uint_key, test_uint_data, COUNT_OF(test_uint_data)))
+            break;
+        if(!flipper_format_write_float(
+               file, test_float_key, test_float_data, COUNT_OF(test_float_data)))
+            break;
+        if(!flipper_format_write_bool(
+               file, test_bool_key, test_bool_data, COUNT_OF(test_bool_data)))
+            break;
+        if(!flipper_format_write_hex(file, test_hex_key, test_hex_data, COUNT_OF(test_hex_data)))
+            break;
+        result = true;
+    } while(false);
+
+    flipper_format_free(file);
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+static bool test_delete_last_key(const char* file_name) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    bool result = false;
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+
+    do {
+        if(!flipper_format_file_open_existing(file, file_name)) break;
+        if(!flipper_format_delete_key(file, test_hex_key)) break;
+        result = true;
+    } while(false);
+
+    flipper_format_free(file);
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+static bool test_append_key(const char* file_name) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    bool result = false;
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+
+    do {
+        if(!flipper_format_file_open_append(file, file_name)) break;
+        if(!flipper_format_write_hex(file, test_hex_key, test_hex_data, COUNT_OF(test_hex_data)))
+            break;
+        result = true;
+    } while(false);
+
+    flipper_format_free(file);
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+static bool test_update(const char* file_name) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    bool result = false;
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+
+    do {
+        if(!flipper_format_file_open_existing(file, file_name)) break;
+        if(!flipper_format_update_string_cstr(file, test_string_key, test_string_updated_data))
+            break;
+        if(!flipper_format_update_int32(
+               file, test_int_key, test_int_updated_data, COUNT_OF(test_int_updated_data)))
+            break;
+        if(!flipper_format_update_uint32(
+               file, test_uint_key, test_uint_updated_data, COUNT_OF(test_uint_updated_data)))
+            break;
+        if(!flipper_format_update_float(
+               file, test_float_key, test_float_updated_data, COUNT_OF(test_float_updated_data)))
+            break;
+        if(!flipper_format_update_bool(
+               file, test_bool_key, test_bool_updated_data, COUNT_OF(test_bool_updated_data)))
+            break;
+        if(!flipper_format_update_hex(
+               file, test_hex_key, test_hex_updated_data, COUNT_OF(test_hex_updated_data)))
+            break;
+
+        result = true;
+    } while(false);
+
+    flipper_format_free(file);
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+static bool test_update_backward(const char* file_name) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    bool result = false;
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+
+    do {
+        if(!flipper_format_file_open_existing(file, file_name)) break;
+        if(!flipper_format_update_string_cstr(file, test_string_key, test_string_data)) break;
+        if(!flipper_format_update_int32(file, test_int_key, test_int_data, COUNT_OF(test_int_data)))
+            break;
+        if(!flipper_format_update_uint32(
+               file, test_uint_key, test_uint_data, COUNT_OF(test_uint_data)))
+            break;
+        if(!flipper_format_update_float(
+               file, test_float_key, test_float_data, COUNT_OF(test_float_data)))
+            break;
+        if(!flipper_format_update_bool(
+               file, test_bool_key, test_bool_data, COUNT_OF(test_bool_data)))
+            break;
+        if(!flipper_format_update_hex(file, test_hex_key, test_hex_data, COUNT_OF(test_hex_data)))
+            break;
+
+        result = true;
+    } while(false);
+
+    flipper_format_free(file);
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+static bool test_write_multikey(const char* file_name) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    bool result = false;
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+
+    do {
+        if(!flipper_format_file_open_always(file, file_name)) break;
+        if(!flipper_format_write_header_cstr(file, test_filetype, test_version)) break;
+
+        bool error = false;
+        for(uint8_t index = 0; index < 100; index++) {
+            if(!flipper_format_write_hex(file, test_hex_key, &index, 1)) {
+                error = true;
+                break;
+            }
+        }
+        if(error) break;
+
+        result = true;
+    } while(false);
+
+    flipper_format_free(file);
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+static bool test_read_multikey(const char* file_name) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    bool result = false;
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+
+    FuriString* string_value;
+    string_value = furi_string_alloc();
+    uint32_t uint32_value;
+
+    do {
+        if(!flipper_format_file_open_existing(file, file_name)) break;
+        if(!flipper_format_read_header(file, string_value, &uint32_value)) break;
+        if(furi_string_cmp_str(string_value, test_filetype) != 0) break;
+        if(uint32_value != test_version) break;
+
+        bool error = false;
+        uint8_t uint8_value;
+        for(uint8_t index = 0; index < 100; index++) {
+            if(!flipper_format_read_hex(file, test_hex_key, &uint8_value, 1)) {
+                error = true;
+                break;
+            }
+
+            if(uint8_value != index) {
+                error = true;
+                break;
+            }
+        }
+        if(error) break;
+
+        result = true;
+    } while(false);
+
+    furi_string_free(string_value);
+
+    flipper_format_free(file);
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+MU_TEST(flipper_format_write_test) {
+    mu_assert(storage_write_string(test_file_linux, test_data_nix), "Write test error [Linux]");
+    mu_assert(
+        storage_write_string(test_file_windows, test_data_win), "Write test error [Windows]");
+    mu_assert(test_write(test_file_flipper), "Write test error [Flipper]");
+}
+
+MU_TEST(flipper_format_read_test) {
+    mu_assert(test_read(test_file_linux), "Read test error [Linux]");
+    mu_assert(test_read(test_file_windows), "Read test error [Windows]");
+    mu_assert(test_read(test_file_flipper), "Read test error [Flipper]");
+}
+
+MU_TEST(flipper_format_delete_test) {
+    mu_assert(test_delete_last_key(test_file_linux), "Cannot delete key [Linux]");
+    mu_assert(test_delete_last_key(test_file_windows), "Cannot delete key [Windows]");
+    mu_assert(test_delete_last_key(test_file_flipper), "Cannot delete key [Flipper]");
+}
+
+MU_TEST(flipper_format_delete_result_test) {
+    mu_assert(!test_read(test_file_linux), "Key deleted incorrectly [Linux]");
+    mu_assert(!test_read(test_file_windows), "Key deleted incorrectly [Windows]");
+    mu_assert(!test_read(test_file_flipper), "Key deleted incorrectly [Flipper]");
+}
+
+MU_TEST(flipper_format_append_test) {
+    mu_assert(test_append_key(test_file_linux), "Cannot append data [Linux]");
+    mu_assert(test_append_key(test_file_windows), "Cannot append data [Windows]");
+    mu_assert(test_append_key(test_file_flipper), "Cannot append data [Flipper]");
+}
+
+MU_TEST(flipper_format_append_result_test) {
+    mu_assert(test_read(test_file_linux), "Data appended incorrectly [Linux]");
+    mu_assert(test_read(test_file_windows), "Data appended incorrectly [Windows]");
+    mu_assert(test_read(test_file_flipper), "Data appended incorrectly [Flipper]");
+}
+
+MU_TEST(flipper_format_update_1_test) {
+    mu_assert(test_update(test_file_linux), "Cannot update data #1 [Linux]");
+    mu_assert(test_update(test_file_windows), "Cannot update data #1 [Windows]");
+    mu_assert(test_update(test_file_flipper), "Cannot update data #1 [Flipper]");
+}
+
+MU_TEST(flipper_format_update_1_result_test) {
+    mu_assert(test_read_updated(test_file_linux), "Data #1 updated incorrectly [Linux]");
+    mu_assert(test_read_updated(test_file_windows), "Data #1 updated incorrectly [Windows]");
+    mu_assert(test_read_updated(test_file_flipper), "Data #1 updated incorrectly [Flipper]");
+}
+
+MU_TEST(flipper_format_update_2_test) {
+    mu_assert(test_update_backward(test_file_linux), "Cannot update data #2 [Linux]");
+    mu_assert(test_update_backward(test_file_windows), "Cannot update data #2 [Windows]");
+    mu_assert(test_update_backward(test_file_flipper), "Cannot update data #2 [Flipper]");
+}
+
+MU_TEST(flipper_format_update_2_result_test) {
+    mu_assert(test_read(test_file_linux), "Data #2 updated incorrectly [Linux]");
+    mu_assert(test_read(test_file_windows), "Data #2 updated incorrectly [Windows]");
+    mu_assert(test_read(test_file_flipper), "Data #2 updated incorrectly [Flipper]");
+}
+
+MU_TEST(flipper_format_multikey_test) {
+    mu_assert(test_write_multikey(TEST_DIR "ff_multiline.test"), "Multikey write test error");
+    mu_assert(test_read_multikey(TEST_DIR "ff_multiline.test"), "Multikey read test error");
+}
+
+MU_TEST(flipper_format_oddities_test) {
+    mu_assert(
+        storage_write_string(test_file_oddities, test_data_odd), "Write test error [Oddities]");
+    mu_assert(test_read(test_file_linux), "Read test error [Oddities]");
+}
+
+MU_TEST_SUITE(flipper_format) {
+    tests_setup();
+    MU_RUN_TEST(flipper_format_write_test);
+    MU_RUN_TEST(flipper_format_read_test);
+    MU_RUN_TEST(flipper_format_delete_test);
+    MU_RUN_TEST(flipper_format_delete_result_test);
+    MU_RUN_TEST(flipper_format_append_test);
+    MU_RUN_TEST(flipper_format_append_result_test);
+    MU_RUN_TEST(flipper_format_update_1_test);
+    MU_RUN_TEST(flipper_format_update_1_result_test);
+    MU_RUN_TEST(flipper_format_update_2_test);
+    MU_RUN_TEST(flipper_format_update_2_result_test);
+    MU_RUN_TEST(flipper_format_multikey_test);
+    MU_RUN_TEST(flipper_format_oddities_test);
+    tests_teardown();
+}
+
+int run_minunit_test_flipper_format() {
+    MU_RUN_SUITE(flipper_format);
+    return MU_EXIT_CODE;
+}

applications/debug/unit_tests/float_tools/float_tools_test.c

@@ -0,0 +1,60 @@
+#include <float.h>
+#include <float_tools.h>
+
+#include "../minunit.h"
+
+MU_TEST(float_tools_equal_test) {
+    mu_check(float_is_equal(FLT_MAX, FLT_MAX));
+    mu_check(float_is_equal(FLT_MIN, FLT_MIN));
+    mu_check(float_is_equal(-FLT_MAX, -FLT_MAX));
+    mu_check(float_is_equal(-FLT_MIN, -FLT_MIN));
+
+    mu_check(!float_is_equal(FLT_MIN, FLT_MAX));
+    mu_check(!float_is_equal(-FLT_MIN, FLT_MAX));
+    mu_check(!float_is_equal(FLT_MIN, -FLT_MAX));
+    mu_check(!float_is_equal(-FLT_MIN, -FLT_MAX));
+
+    const float pi = 3.14159f;
+    mu_check(float_is_equal(pi, pi));
+    mu_check(float_is_equal(-pi, -pi));
+    mu_check(!float_is_equal(pi, -pi));
+    mu_check(!float_is_equal(-pi, pi));
+
+    const float one_third = 1.f / 3.f;
+    const float one_third_dec = 0.3333333f;
+    mu_check(one_third != one_third_dec);
+    mu_check(float_is_equal(one_third, one_third_dec));
+
+    const float big_num = 1.e12f;
+    const float med_num = 95.389f;
+    const float smol_num = 1.e-12f;
+    mu_check(float_is_equal(big_num, big_num));
+    mu_check(float_is_equal(med_num, med_num));
+    mu_check(float_is_equal(smol_num, smol_num));
+    mu_check(!float_is_equal(smol_num, big_num));
+    mu_check(!float_is_equal(med_num, smol_num));
+    mu_check(!float_is_equal(big_num, med_num));
+
+    const float more_than_one = 1.f + FLT_EPSILON;
+    const float less_than_one = 1.f - FLT_EPSILON;
+    mu_check(!float_is_equal(more_than_one, less_than_one));
+    mu_check(!float_is_equal(more_than_one, -less_than_one));
+    mu_check(!float_is_equal(-more_than_one, less_than_one));
+    mu_check(!float_is_equal(-more_than_one, -less_than_one));
+
+    const float slightly_more_than_one = 1.f + FLT_EPSILON / 2.f;
+    const float slightly_less_than_one = 1.f - FLT_EPSILON / 2.f;
+    mu_check(float_is_equal(slightly_more_than_one, slightly_less_than_one));
+    mu_check(float_is_equal(-slightly_more_than_one, -slightly_less_than_one));
+    mu_check(!float_is_equal(slightly_more_than_one, -slightly_less_than_one));
+    mu_check(!float_is_equal(-slightly_more_than_one, slightly_less_than_one));
+}
+
+MU_TEST_SUITE(float_tools_suite) {
+    MU_RUN_TEST(float_tools_equal_test);
+}
+
+int run_minunit_test_float_tools() {
+    MU_RUN_SUITE(float_tools_suite);
+    return MU_EXIT_CODE;
+}

applications/debug/unit_tests/furi/furi_memmgr_test.c

@@ -0,0 +1,39 @@
+#include "../minunit.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+void test_furi_memmgr() {
+    void* ptr;
+
+    // allocate memory case
+    ptr = malloc(100);
+    mu_check(ptr != NULL);
+    // test that memory is zero-initialized after allocation
+    for(int i = 0; i < 100; i++) {
+        mu_assert_int_eq(0, ((uint8_t*)ptr)[i]);
+    }
+    free(ptr);
+
+    // reallocate memory case
+    ptr = malloc(100);
+    memset(ptr, 66, 100);
+    ptr = realloc(ptr, 200);
+    mu_check(ptr != NULL);
+
+    // test that memory is really reallocated
+    for(int i = 0; i < 100; i++) {
+        mu_assert_int_eq(66, ((uint8_t*)ptr)[i]);
+    }
+
+    // TODO: fix realloc to copy only old size, and write testcase that leftover of reallocated memory is zero-initialized
+    free(ptr);
+
+    // allocate and zero-initialize array (calloc)
+    ptr = calloc(100, 2);
+    mu_check(ptr != NULL);
+    for(int i = 0; i < 100 * 2; i++) {
+        mu_assert_int_eq(0, ((uint8_t*)ptr)[i]);
+    }
+    free(ptr);
+}

applications/debug/unit_tests/furi/furi_pubsub_test.c

@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <string.h>
+#include <furi.h>
+#include "../minunit.h"
+
+const uint32_t context_value = 0xdeadbeef;
+const uint32_t notify_value_0 = 0x12345678;
+const uint32_t notify_value_1 = 0x11223344;
+
+uint32_t pubsub_value = 0;
+uint32_t pubsub_context_value = 0;
+
+void test_pubsub_handler(const void* arg, void* ctx) {
+    pubsub_value = *(uint32_t*)arg;
+    pubsub_context_value = *(uint32_t*)ctx;
+}
+
+void test_furi_pubsub() {
+    FuriPubSub* test_pubsub = NULL;
+    FuriPubSubSubscription* test_pubsub_subscription = NULL;
+
+    // init pubsub case
+    test_pubsub = furi_pubsub_alloc();
+    mu_assert_pointers_not_eq(test_pubsub, NULL);
+
+    // subscribe pubsub case
+    test_pubsub_subscription =
+        furi_pubsub_subscribe(test_pubsub, test_pubsub_handler, (void*)&context_value);
+    mu_assert_pointers_not_eq(test_pubsub_subscription, NULL);
+
+    /// notify pubsub case
+    furi_pubsub_publish(test_pubsub, (void*)&notify_value_0);
+    mu_assert_int_eq(pubsub_value, notify_value_0);
+    mu_assert_int_eq(pubsub_context_value, context_value);
+
+    // unsubscribe pubsub case
+    furi_pubsub_unsubscribe(test_pubsub, test_pubsub_subscription);
+
+    /// notify unsubscribed pubsub case
+    furi_pubsub_publish(test_pubsub, (void*)&notify_value_1);
+    mu_assert_int_not_eq(pubsub_value, notify_value_1);
+
+    // delete pubsub case
+    furi_pubsub_free(test_pubsub);
+}

applications/debug/unit_tests/furi/furi_record_test.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <string.h>
+#include <furi.h>
+#include "../minunit.h"
+
+void test_furi_create_open() {
+    // 1. Create record
+    uint8_t test_data = 0;
+    furi_record_create("test/holding", (void*)&test_data);
+
+    // 2. Open it
+    void* record = furi_record_open("test/holding");
+    mu_assert_pointers_eq(record, &test_data);
+
+    // 3. Close it
+    furi_record_close("test/holding");
+
+    // 4. Clean up
+    furi_record_destroy("test/holding");
+}