4e65d543d8
* stm32h7: New timer output mode STM32_TIM_CH_OUTTOGGLE. In this mode timer generates a square waveform on given timer channel. The maximal waveform freq is timer clock divided by 4 (prescaler 1, period 1 results in 2 clocks '0' and 2 clocks '1'). * stm32_tim.h styling fixes.