电调驱动问题大家帮我看看

c627933142 · 发表于 2018-5-5 15:39:01

本帖最后由 c627933142 于 2018-5-7 18:47 编辑

先是PWM程序
void PWM(int16_t duty1,int16_t duty2,int16_t duty3,int16_t duty4)
{
TIM_SetCompare1(TIM1,duty1);
TIM_SetCompare2(TIM1,duty2);
TIM_SetCompare3(TIM1,duty3);
TIM_SetCompare4(TIM1,duty4);
}
void motor_init(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
  TIM_OCInitTypeDef TIM_OCInitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);

  GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11;
  GPIO_InitStructure.GPIO_OType=GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd=GPIO_PuPd_UP;
  GPIO_InitStructure.GPIO_Speed=GPIO_Speed_100MHz;
  GPIO_Init(GPIOA,&GPIO_InitStructure);

  TIM_TimeBaseStructure.TIM_ClockDivision=0;
  TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;
  TIM_TimeBaseStructure.TIM_Period=1999;
  TIM_TimeBaseStructure.TIM_Prescaler=516;
  TIM_TimeBaseInit(TIM4,&TIM_TimeBaseStructure);
  TIM_Cmd(TIM1,ENABLE);

  TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;
  TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

  TIM_OC1Init(TIM1,&TIM_OCInitStructure);
  TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);

  TIM_OC2Init(TIM1,&TIM_OCInitStructure);
  TIM_OC2PreloadConfig(TIM1,TIM_OCPreload_Enable);

  TIM_OC3Init(TIM1,&TIM_OCInitStructure);
  TIM_OC3PreloadConfig(TIM1,TIM_OCPreload_Enable);

  TIM_OC4Init(TIM1,&TIM_OCInitStructure);
  TIM_OC4PreloadConfig(TIM1,TIM_OCPreload_Enable);

  TIM_ARRPreloadConfig(TIM1,ENABLE);

}
然后是主函数
int main(void)
{
delay_init(72);
motor_init();
PWM(1999,1999,1999,1999);
delay_ms(1000);
PWM(0,0,0,0);
delay_ms(1800);
while(1)
{
  PWM(999,999,999,999);
}
}用示波器看根本没有波出来单片机用的是stm32f407 电调是新西达30A 初始化从没成功过哪位大神能帮忙纠正一下或者提供个能用的初始化程序