stm32通过stlink与电脑连接时,连接到其上面的舵机可以运行;但是当stm32通过usb转ttl连接到树莓派后,舵机程序便不能运行
while(1){
if(flag_num == 1){
pwm = 1000;
TIM_SetCompare4(TIM4,(20000-pwm)/100);
Delay_s(1);
flag_num = 2;
}
else {
pwm = 2000;
TIM_SetCompare4(TIM4,(20000-pwm)/100);
Delay_s(1);
flag_num = 1;
}