ChibiOS Free Embedded RTOS

Thanks! I will figure out a way to use one of the other timers then.

I have a project where I'm already using TIM{2, 3, 4, 5} to generate external PWM signals and the part I use (STM32F446) doesn't have TIM21 and TIM22. It seems like these are the only timers available to be used as free running timers.

I modified st_lld.c / st_lld.h to also support TIM7, which is a ...