ʾʹõԴ
TIM1 BRK1    --   PA2
TIM1 CH1     --   PA15
TIM1 CH2     --   PB3
TIM1 CH3     --   PB4
TIM1 CH4     --   PB5
TIM1 CH5     --   PB6
TIM1 CH6     --   PB7


ʾḶ́
1ϵʱӣRCH 72MHz
2ʼSystick100msһжϣ
3TIM1ΪPWMģʽ6ͨ;
       ͨ1 - 6CC1PЧеƽΪ͵ƽЧ
   
4ͨ1 - 6εռձΪ50%

5Systickжʱһλ¼

ע⣺
16PWMֵ£
         -----------------------------------------------
        | Step1 | Step2 | Step3 | Step4 | Step5 | Step6 |
   ----------------------------------------------------------
   CH1  |   1   |   1   |   0   |   0   |   0   |   0   |
   ----------------------------------------------------------
   CH2  |   0   |   0   |   0   |   1   |   1   |   0   |
   ----------------------------------------------------------
   CH3  |   0   |   0   |   1   |   1   |   0   |   0   |
   ----------------------------------------------------------
   CH4  |   1   |   0   |   0   |   0   |   0   |   1   |
   ----------------------------------------------------------
   CH5  |   0   |   0   |   0   |   0   |   1   |   1   |
   ----------------------------------------------------------
   CH6  |   0   |   1   |   1   |   0   |   0   |   0   |
   ----------------------------------------------------------
   
2Ϊֹ·¼TIM1 BRKӦΪ͵ƽ