crazybolillo / stm32f401xc

Bunch of programs for a STM32F401CCU6. Using CMSIS, FreeRTOS and TinyUSB

stm32f401xc

This is a collection of programs using a STM32F401CCU6 chip. Most if not all of them follow a similar structure:

• FreeRTOS is used to schedule tasks.
• TinyUSB is used for the USB stack.
• Most data is displayed through a USB CDC connection (can be seen with a serial monitor).
• Whenever possible, only CMSIS5 is used to configure/use the hardware registers. USB is an exception since I value my mental sanity.

Overall this project should be of help in the following cases:

• Need some simple examples on how to use FreeRTOS in "real life".
• Want to see how the TinyUSB stack is used for serial-like communication.
• Need an example of how to set up some hardware modules with pure register access (no HAL).

I should mention at this point that I am not an authoritative source of information. I personally enjoy the way I have set up all code in this project (using clang-format and clang-tidy), but who knows, maybe it's all crap.

Building

This project uses CMake and assumes you have a working ARM toolchain setup on your computer. The build process has only been tested (at least that I know of) on Linux systems (specifically Arch Linux btw). You need to use one of the toolchain files provided in the vendor/arm-cmake folder. For example, to build all programs in this repository, use:

cmake -DCMAKE_TOOLCHAIN_FILE="vendor/arm-cmake/clang-arm-gcc-toolchain.cmake" -S./ -B./build
cmake --build build

stm32f401xc's Issues

Gather the Chips ID to be used in USB descriptors

Currently the serial number is hard coded to 123456, it would be better to actually provide a chip ID or serial number.