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@@ -81,11 +81,20 @@ CMSIS creates following targets:
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So, if you don't need linker script, you can link only `CMSIS::STM32::<TYPE>` library and provide own script using `stm32_add_linker_script` function
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***Note**: For H7 family, because of it multi-cores architecture, all H7 targets also have a suffix (::M7 or ::M4).
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-For example, targets created for STM32H747BI will look like `CMSIS::STM32::H7::M7`, `CMSIS::STM32::H7::M4`, `CMSIS::STM32::H747BI::M7`, `CMSIS::STM32::H747BI::M4`, etc.*
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-
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-The GCC C/C++ standard libraries are added by linking the library `STM32::NoSys`. This will add the `--specs=nosys.specs` to compiler and linker flags.
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-If you want to use C++ on MCUs with little flash, you might instead want to link the newlib-nano to reduce the code size. You can do so by linking `STM32::Nano`, which will add the `--specs=nano.specs` flags to both compiler and linker.
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-Keep in mind that when using `STM32::Nano`, by default you cannot use floats in printf/scanf calls, and you have to provide implementations for several OS interfacing functions (_sbrk, _close, _fstat, and others).
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+For example, targets created for STM32H747BI will look like `CMSIS::STM32::H7::M7`,
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+`CMSIS::STM32::H7::M4`, `CMSIS::STM32::H747BI::M7`, `CMSIS::STM32::H747BI::M4`, etc.*
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+
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+The GCC C/C++ standard libraries are added by linking the library `STM32::NoSys`. This will add
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+the `--specs=nosys.specs` to compiler and linker flags.
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+If you want to use C++ on MCUs with little flash, you might instead want to link the newlib-nano to
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+reduce the code size. You can do so by linking `STM32::Nano`, which will add the
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+`--specs=nano.specs` flags to both compiler and linker.
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+Keep in mind that when using `STM32::Nano`, by default you cannot use floats in printf/scanf calls,
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+and you have to provide implementations for several OS interfacing
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+functions (`_sbrk`, `_close`, `_fstat`, and others). You can enable IO floating point support with
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+newlib-nano by linking against `STM32::Nano::FloatPrint` and/or `STM32::Nano::FloatScan`.
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+It is also possible to combine `STM32::Nano` and `STM32::NoSys`
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+to have the benefits of reduced code size while not being forced to implement system calls.
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## HAL
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Robin Mueller