Arduino for STM32

Thanks! I will think about the stack issue.
And thanks for the hint about the eventloop thing. But we already have code running on FreeRTOS on other boards, and have to stick to it.

Well, things were pretty interesting. Generally speaking STM32DUINO FreeRTOS works on this board, but not when USB is connected. After flashing any STM32DUINO FreeRTOS example to the board, it seems it got stuck in the "main task" and not switching to any of the tasks created. However, in ...