进不了中断，求大神指点

只看该作者 · 2023-1-5 10:05

#include "bsp_spwm_output.h"
uint16_t  CCR1_Val ;
uint16_t  CCR2_Val = 1500 ;
uint16_t  CCR3_Val = 900;
static void TIM1_Mode_Config(void)
{

  GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;

/* GPIOA clocks enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
/* TIM1 clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_9 | GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA,&GPIO_InitStructure);

/* Connect TIM pins to AF6 */
GPIO_PinAFConfig(GPIOA, GPIO_PinSource8, GPIO_AF_6);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_6);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_6);

/* Time Base configuration */

TIM_TimeBaseStructure.TIM_Period =2999;
  TIM_TimeBaseStructure.TIM_Prescaler = 0;
  TIM_TimeBaseStructure.TIM_RepetitionCounter = 0; //ÉèÖÃÔ¤·ÖÆµ£º²»Ô¤·ÖÆµ£¬¼´Îª72MHz
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //ÉèÖÃÊ±ÖÓ·ÖÆµÏµÊý£º²»·ÖÆµ(ÕâÀïÓÃ²»µ½)
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_CenterAligned1;  //ÏòÉÏ¼ÆÊýÄ£Ê½
  TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

  /*PWM1 Mode configuration: Channel1 */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;       //ÅäÖÃÎªPWMÄ£Ê½1
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = CCR2_Val;    //ÉèÖÃÌø±äÖµ£¬µ±¼ÆÊýÆ÷¼ÆÊýµ½Õâ¸öÖµÊ±£¬µçÆ½·¢ÉúÌø±ä
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;  //µ±¶¨Ê±Æ÷¼ÆÊýÖµÐ¡ÓÚCCR1_ValÊ±Îª¸ßµçÆ½
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set;

  TIM_OC2Init(TIM1, &TIM_OCInitStructure);    //Ê¹ÄÜÍ¨µÀ1
  TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);
  TIM_ARRPreloadConfig( TIM1,ENABLE);

TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = CCR3_Val;
  TIM_OC3Init(TIM1, &TIM_OCInitStructure);    //Ê¹ÄÜÍ¨µÀ4
  TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);
  TIM_ARRPreloadConfig( TIM1,ENABLE);

  TIM_ARRPreloadConfig( TIM1,ENABLE);
TIM_UpdateRequestConfig( TIM1, TIM_UpdateSource_Regular);
  TIM_ITConfig(TIM1,TIM_IT_Update | TIM_IT_Trigger,ENABLE);/* TIM3 enable counter */
  TIM_Cmd(TIM1, ENABLE);    //Ê¹ÄÜ¶¨Ê±Æ÷3
TIM_ClearFlag(TIM1, TIM_FLAG_Update);
TIM_CtrlPWMOutputs(TIM1, ENABLE);
}

   void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
  NVIC_InitStructure.NVIC_IRQChannel = TIM1_CC_IRQn; //TIM1ÖÐ¶Ï
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 6;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void TIM1_SPWM_Init(void)
{
   TIM1_Mode_Config();
   NVIC_Configuration();
} // /*****/