ʾʹõԴ
TIM3 CH1     --   PA5
TIM3 CH2     --   PA4

ʾḶ́
1ϵʱӣRCH 48MHz
2TIM3ͨ1壻
   TI2ΪĴԴЧ;
3⵽źЧʱ岨Σ

ע⣺
1ͨ2źŵЧصͨ1ź֮ʱΪDelay
   ͨ1źŵĿΪPulse
   
   TIM3ļʱ = 6MHzʷƵֵ psc_value = (((SystemCoreClock) / 6000000)) = 8ʱPSCΪ0x03;
   
   Delay =  CC1/TIM3ʱ = (16383 / 6000000) 
   Pulse = (ARR - CC1)/TIM3ʱ = ((65535 - 16383) / 6000000) 
                                _____________________________________________
                               |  
  CH2 _________________________|  
                                             ___________________________
                                            |                           |
  CH1 ______________________________________|                           |_____
                               <---Delay----><------Pulse--------------->