mypwm.c
 pwm  PB4 -> x
     PB5 -> Y

launch.c  
 ̵ʱ  PD3
                 timer1


ת
     ʱ1 ʹ X  һ仯

ÿƱ  printfff ĬΪ1 ݸ 0
                     Ϊ0 ʱݸ1   openmv ʵ־K 















