ʾʹõԴ
TIM3 CH1     --   PB4
TIM3 CH2     --   PB5
TIM4 CH1     --   PA15

ʾḶ́
1ϵʱӣRCH 72MHz
2TIM3ã
   TIM3ģʽѡΪſģʽԴΪTI2FP2Ч
   TIM3ģʽѡΪʹģʽ
   
   TIM3ͨ1ȽģʽΪPWM1ģʽ
   
3TIM4ã
   TIM4ģʽѡΪſģʽԴΪITR1
   
   TIM1ͨ1ȽģʽΪPWM1ģʽ
 
4TIM3ͨ2ϼ⵽Чغ󣬴TIM3TIM4ͨ1ͬռձΪ50%ĲΣ

ע⣺
1TIM3ģʽԴΪЧͨ2Ӧֵ͵ƽ
2TIM£
                               __________________________________________________
                              | 
  TIM3 CH2 ___________________| 
 
                                          _________           _________         
                                         |         |         |         |
  TIM3 CH1 ______________________________|         |_________|         |_________
                              
                                          _________           _________         
                                         |         |         |         |
  TIM4 CH1 ______________________________|         |_________|         |_________