drivers: pwm: stm32: add pwm capture support
Extends STM32 PWM driver to support capturing pulse width, period,
or both.
The approach used is based on the PWM Input sections in reference
manual RM0351 by ST in the chapters on timers.
The LL library by ST is used for all extensions to the driver.
Only the disco_l475_iot1 board was available for testing on hardware,
using tests/drivers/pwm/pwm_loopback.
Since timers are a generic component, it is assumed that other STM32
boards will behave the same
Fixes #39394
Signed-off-by: Tilmann Unte <unte@es-augsburg.de>
1 file changed
