FreeRTOS

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STM32 Cube & FreeRTOS

The stack uses STM32 Cube, mainly for it's Hardware Abstraction Layers (HAL) and Middleware components such as RTOS (i.e. FreeRTOS with CMSIS-OS API).

A User Manual on developing applications on STM32Cube with RTOS is provided by ST. It gives a great explanation of the structure

CMSIS OS

As described in the user manual above, the CMSIS-RTOS module is used in the STM32Cube middleware layer. More info about the CMSIS-OS API can also be found on their documentation page.

Stack integration using makefiles

The USE_RTOS_SCHEDULER is set by default, but can be disabled by setting to zero in the application Makefile