???????????????????PWM???????
?????????? PWM (Pulse Width Modulation) ?? Sample Code??
?? ????? PWM ?? Sample Code???????????? PWM 1 ????? duty ???? LED ???????????Ч????
?? ????? PWM ?? Sample Code???????????????? Duty ?? PWM ??????????? PWM1 ?????? LED????? API ???? PWM ????????? duty???? LED 0.5 ??????0.5 ????
???????????????MCU???????????????????????????????????????????????
????zzy ?????????2022-07-28
