高级定时器TIM1输出SPWM 程序运行进入不了中断哪里出了问题

xingming · 发表于 2016-9-8 18:05:49

软件仿真一步步运行，在中断出设置断点，可是运行不到，小弟是初学者，求大神帮我看看

void Spwm_Init_Init(u16 arr,u16 psc)
{
      GPIO_InitTypeDef GPIO_InitStructure;
      TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
      TIM_OCInitTypeDef TIM_OCInitStructure;
      TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
      NVIC_InitTypeDef NVIC_InitStructure;


      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOA,ENABLE);
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
      RCC_APB2PeriphResetCmd(RCC_APB2Periph_TIM1,ENABLE);

      GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
      GPIO_InitStructure.GPIO_Pin=GPIO_Pin_13;
      GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
      GPIO_Init(GPIOB,&GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
      GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8;
      GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
      GPIO_Init(GPIOA,&GPIO_InitStructure);

      TIM_TimeBaseStructure.TIM_Period=arr;//
      TIM_TimeBaseStructure.TIM_Prescaler=psc;//预分频系数
      TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_CenterAligned1;//中央对齐模式1
      TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;
      TIM_TimeBaseStructure.TIM_RepetitionCounter=0x0000;
      TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);

      TIM_OCInitStructure.TIM_OCIdleState=TIM_OCIdleState_Set;
      TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;
      TIM_OCInitStructure.TIM_OCNIdleState=TIM_OCIdleState_Reset;
      TIM_OCInitStructure.TIM_OCNPolarity=TIM_OCNPolarity_High;
      TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;
      TIM_OCInitStructure.TIM_OutputNState=TIM_OutputNState_Enable;
      TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
      TIM_OCInitStructure.TIM_Pulse=100;//CCR
      TIM_OC1Init(TIM1, &TIM_OCInitStructure);

      TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Disable);

      TIM_BDTRInitStructure.TIM_OSSRState=TIM_OSSRState_Enable;
      TIM_BDTRInitStructure.TIM_OSSIState=TIM_OSSIState_Enable;
      TIM_BDTRInitStructure.TIM_LOCKLevel=TIM_LOCKLevel_OFF;
      TIM_BDTRInitStructure.TIM_DeadTime=0x07;       //死区时间
      TIM_BDTRInitStructure.TIM_BreakPolarity=TIM_BreakPolarity_High;
      TIM_BDTRInitStructure.TIM_Break=TIM_Break_Disable;
      TIM_BDTRInitStructure.TIM_AutomaticOutput=TIM_AutomaticOutput_Enable;
      TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);
      TIM_ARRPreloadConfig(TIM1,ENABLE);
      TIM_CtrlPWMOutputs(TIM1,ENABLE);
      TIM_Cmd(TIM1, ENABLE);

      TIM_ITConfig(TIM1,TIM_IT_CC1,ENABLE );
      NVIC_InitStructure.NVIC_IRQChannel=TIM1_CC_IRQn;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
      NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
      NVIC_Init(&NVIC_InitStructure);


}

void TIM1_CC_IRQHandler(void)
{
      if (TIM_GetITStatus(TIM1, TIM_IT_CC1) != RESET)
      {
               TIM_ClearITPendingBit(TIM1, TIM_IT_CC1);
               TIM_SetCompare1(TIM1,Duty[count]);
            i++;
            if(i==20)
            {
                     i=0;
                     count++;
            }
            if(count==num)
            {
                     count=0;
            }
      }

}