Update README.md

README.md

@@ -1,5 +1,3 @@
-
-
 # <img src="quac.png" alt="logo" width="30" style="image-rendering: pixelated;"/> Quac! Remote
 ## QUick ACtion Remote Control for Flipperzero
 This app allows you to organize previously recorded signals, of any type*, so that you can quickly and easily play them back. No more needing to recall whether that door is Sub-GHz or RFID! Just navigate to that action in **Quac** and press OK to send!
@@ -10,6 +8,13 @@ The app does not provide any recording functionality - you must use the existing
 * Only Sub-Ghz (.sub) and RFID (.rfid) files are supported at this time, IR is coming soon!
 ```
 
+## Features
+* Playback of rfid, sub-ghz, (and soon IR) signals
+* [Easy navigation](README.md#navigation--controls)
+* [Flexible signal organization](README.md#signal-organization) - utilizing the SDcard filesystem
+* Playlist support
+* Hidden file/folder support
+
 ## Screenshots
 <table align="center">
   <tr>
@@ -17,8 +22,8 @@ The app does not provide any recording functionality - you must use the existing
     <td align="center">"Work" Actions</td>
   </tr>
   <tr>
-    <td><img src="screenshots/screenshot_1.png"/></td>
-    <td><img src="screenshots/screenshot_2.png"/></td>
+    <td><img src="screenshots/screenshot_1.png" width="100px"/></td>
+    <td><img src="screenshots/screenshot_2.png" width="100px"/></td>
   </tr>
 </table>
 
@@ -28,37 +33,52 @@ The app does not provide any recording functionality - you must use the existing
 - Pressing `Back` will take you up one folder
 - Pressing `Up` and `Down` will, you know, select things up and down...
 
-## File System Layout
-The key to organizing your Quac interface is to organize your `/ext/apps_data/quac` folder structure. Every individual file is assigned a button, and every folder/directory is a "group". Selecting a group will show you the contents of that folder/directory, whether they are individual files or more folders. There is no limit on the number of actions or folders - nest as deep as you want!
+## Signal Organization
+The key to organizing your Quac interface is to organize your `/ext/apps_data/quac` folder structure. The UI is derived directly from the filesystem structure. Every individual file/signal is assigned a button. This is an "action". And every folder/directory is a logical group of more files/folders. Selecting a group in the UI will show you the contents of that folder. There is no limit on the number of actions or folders - nest as deep as you want!
 
 You can organize your files by device type, or by function. For example, you may have a folder of "TV" actions, which correspond to Channel Up, Channel Down, Volume Up, Volume Down, etc. Or you may have a "Work Access" folder, which contains files/actions that correspond to Parking Gate, Garage Door, Lobby Entrance. 
 
-The files in a folder can be of mixed types. This is Quac's main strength! So continuing with the "Work Access" example, the Parking Gate can be Sub-Ghz and the Garage Door can be RFID.
-
-## Sorting and Naming
-The list view is based on the sorted file and folder order. This is enforced by sorting the actual filenames. When there are cases where you need to enforce a sorted order, you can prepend the file and folder names with `XX_` where `X` is a digit between 0-9. This will let you place an action called `On` before `Off`, even though when sorted alphabeticaly, `Off` would come before `On`. Therefore, you would name your files `00_On.rfid` and `01_Off.rfid` - assuming these are RFID saved signals.
+The files in a folder can be of mixed types. **This is Quac's main strength!** So continuing with the "Work Access" example, the Parking Gate can be Sub-Ghz and the Garage Door can be RFID.
 
 Here's an example file layout for the screenshots above:
 ```
 /ext/apps_data/quac
   /00_Work
-    -00_Parking_Gate.sub
-    -01_Garage_Door.rfid
-    -02_Office.rfid
-  -01_Front_Door.rfid
+    00_ParkingGate.sub
+    01_Garage_door.rfid
+    02_Office.rfid
+  01_Front_Door.rfid
   /02_Home_Theater
-     -00_Power_On.ir
-     -01_Power_Off.ir
+     00_Power_On.ir
+     01_Power_Off.ir
 ```
 
-When the action files and folders are rendered for display, any `XX_` prefix will be stripped. All underscores will be replaced with spaces. Extensions will be stripped. Casing is preserved.
+## Playlists
+You can chain multiple signal playback actions together by creating a playlist. Simply create a text file which contains a list of paths to the signals you wish to transmit - they will be played sequentially. Playlist names show up as clickable button, like all other individual signals/actions. Playlist files feature the following:
+* Comments: lines that start with a `#` are ignored
+* `pause <ms>` on a line will pause the playback by the specified millisecond duration
+* Signal file names can be fully specified or local to the current directory
+
+Errors found in the playlist will halt playback and vibrate the F0. Blank lines are ignored.
+
+Here's an example playlist called `/ext/apps_data/quac/arrive_home.qpl`:
+```
+# Home arrival playlist
+.exterior_light_on.sub
+.side_door_unlock.sub
+pause 2500
+/ext/apps_data/quac/03_Stereo/00_On.sub
+/ext/apps_data/quac/06_Lights/Disco_Ball.sub
+```
+The first two `.sub` files live in the `/ext/apps_data/quac` folder, which is where `arrive_home.qpl` is located, and will not show up in any UI screen since they are hidden (start with a `.`). Next, we pause the playlist for 2.5 sec. The last two files live elsewhere, but can still be referenced by the playlist.
+
+## Sorting and Naming
+The list view UI is based on the sorted file and folder order. This is enforced by sorting the actual filenames. When there are cases where you need to force a specific order, you can prepend the file and folder names with `XX_` where `X` is a digit between 0-9. This will let you place an action called `On` before `Off`, even though when sorted alphabeticaly, `Off` would come before `On`. Therefore, you would name your files `00_On.rfid` and `01_Off.rfid`. When the files and folders are rendered for display, any `XX_` prefix will be stripped. All underscores will be replaced with spaces. Extensions will be stripped. Casing is preserved. Additionally, all files and folders that begin with a `.` will be ignored when drawing the UI. However, they can still be referenced in playlists. This keeps the UI unclutterd.
 
 ## Signal playback
-The signal files are played back as recorded. During playback/transmit, the LED light will flash green until the action is complete. For RFID signals, they are continuously played back for 3 seconds.
+The signal files are played back as recorded. During playback/transmit, the LED light will flash blue until the action is complete. For RFID signals, they are continuously played back for 3 seconds.
 
 ## On deck... maybe?
-- Playlist support: Thinking a `.qpl` file (Quac playlist file - just a text file), that lists the full path of every command you wish to play back. Playlists would be rendered as buttons. Support a `pause [ms]` command so you can space out the actions inside of a playlist.
-- Hidden file/folder support: Hide files and folders if they start with a `.`. This allows you to place/organize the files used by a playlist in your current directory structure, without them appearing as buttons/groups in the app.
 - Horizontal layout
 - Customize length of RFID playback. (Per file? hmm...)
 - Improved UI