While writing a PWM driver for the STM32s mcu family I came across the issue of assigning output pins for a pwm channel.
PWM output in STM32s is done by configuring a pin for "alternate functions" - where specific pins have specific (possible) alternate functions. In other words, only a very limited number of timer:channel:pin combinations are possible, each one requiring a very specific alternate function. `struct pwm_chan_config` only specifies the pin number. I've been using the `data` member to put the burden on the application to specify the "correct" number for the alternate function - but I find this a little unsatisfactory. So I was wondering if somebody has a recommendation, better approach to solving this issue? Have fun, Markus
