Stm32f427 TIM1和TIM2的PWM通道无法输出PWM信号

arabotue · 发表于 2021-10-17 01:29:12

各位老师好，我用429的模板改了427的代码，要求输出16路PWM，用了TIM1~TIM4的16路PWM通道，但是TIM3和TIM4的8路PWM能够正常输出，但是TIM1和TIM2的8路PWM无法输出，不知道有老师遇到过这个问题的嘛？

void TIM3_PWM_Init(u32 arr,u32 psc)
{
//′Ë2¿·ÖDèêÖ¶ˉDT¸ÄIO¿úéèÖÃ
RCC->APB1ENR|=1<<1; //TIM3ê±Öóê1Äü
RCC->AHB1ENR|=1<<1;//ê1ÄüPORTBê±Öó
RCC->AHB1ENR|=1<<0;//ê1ÄüPORTAê±Öó

GPIO_Set(GPIOB,PIN1|PIN0,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU);//¸′óÃ1|Äü,éÏà-êä3ö
GPIO_AF_Set(GPIOB,1,2); //PB1,AF2
GPIO_AF_Set(GPIOB,0,2); //PB1,AF2

GPIO_Set(GPIOA,PIN7|PIN6,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU);//¸′óÃ1|Äü,éÏà-êä3ö
GPIO_AF_Set(GPIOA,6,2); //PB1,AF2
GPIO_AF_Set(GPIOA,7,2); //PB1,AF2

TIM3->ARR=arr; //éè¶¨¼ÆêyÆ÷×Ô¶ˉÖØ×°Öμ
TIM3->PSC=psc; //Ô¤·ÖÆμÆ÷2»·ÖÆμ

TIM3->CCMR1|=6<<12;    //CH2 PWM1Ä￡ê½
TIM3->CCMR1|=1<<11; //CH2 Ô¤×°ÔØê1Äü

TIM3->CCMR1|=6<<4; //CH1 PWM1Ä￡ê½
TIM3->CCMR1|=1<<3; //CH1 Ô¤×°ÔØê1Äü

TIM3->CCMR2|=6<<12;    //CH4 PWM1Ä￡ê½
TIM3->CCMR2|=1<<11; //CH4 Ô¤×°ÔØê1Äü

TIM3->CCMR2|=6<<4; //CH3 PWM1Ä￡ê½
TIM3->CCMR2|=1<<3; //CH3 Ô¤×°ÔØê1Äü

TIM3->CCER|=1<<0; //OC1 êä3öê1Äü
TIM3->CCER|=1<<4; //OC2 êä3öê1Äü
TIM3->CCER|=1<<8; //OC3 êä3öê1Äü
TIM3->CCER|=1<<12;    //OC4 êä3öê1Äü
//TIM3->CCER|=1<<13;    //OC4 ¸ßμçÆ½óDD§
TIM3->CR1|=1<<7;    //ARPEê1Äü

TIM3->CR1|=1<<0; //ê1Äü¶¨ê±Æ÷3
}
void TIM4_PWM_Init(u32 arr,u32 psc)
{
//′Ë2¿·ÖDèêÖ¶ˉDT¸ÄIO¿úéèÖÃ
RCC->APB1ENR|=1<<2; //TIM4ê±Öóê1Äü
RCC->AHB1ENR|=1<<1;//ê1ÄüPORTBê±Öó
RCC->AHB1ENR|=1<<0;//ê1ÄüPORTAê±Öó

GPIO_Set(GPIOB,PIN9|PIN8|PIN6|PIN7,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU);//¸′óÃ1|Äü,éÏà-êä3ö
GPIO_AF_Set(GPIOB,6,2); //PB1,AF2
GPIO_AF_Set(GPIOB,7,2); //PB1,AF2
GPIO_AF_Set(GPIOB,8,2); //PB1,AF2
GPIO_AF_Set(GPIOB,9,2); //PB1,AF2 +

TIM4->ARR=arr; //éè¶¨¼ÆêyÆ÷×Ô¶ˉÖØ×°Öμ
TIM4->PSC=psc; //Ô¤·ÖÆμÆ÷2»·ÖÆμ

TIM4->CCMR1|=6<<12;    //CH2 PWM1Ä￡ê½
TIM4->CCMR1|=1<<11; //CH2 Ô¤×°ÔØê1Äü

TIM4->CCMR1|=6<<4; //CH1 PWM1Ä￡ê½
TIM4->CCMR1|=1<<3; //CH1 Ô¤×°ÔØê1Äü

TIM4->CCMR2|=6<<12;    //CH4 PWM1Ä￡ê½
TIM4->CCMR2|=1<<11; //CH4 Ô¤×°ÔØê1Äü

TIM4->CCMR2|=6<<4; //CH3 PWM1Ä￡ê½
TIM4->CCMR2|=1<<3; //CH3 Ô¤×°ÔØê1Äü

TIM4->CCER|=1<<0; //OC1 êä3öê1Äü
TIM4->CCER|=1<<4; //OC2 êä3öê1Äü
TIM4->CCER|=1<<8; //OC3 êä3öê1Äü
TIM4->CCER|=1<<12;    //OC4 êä3öê1Äü
TIM4->CCER|=1<<13;    //OC4 ¸ßμçÆ½óDD§
TIM4->CR1|=1<<7;    //ARPEê1Äü

TIM4->CR1|=1<<0; //ê1Äü¶¨ê±Æ÷3
}
void TIM1_PWM_Init(u32 arr,u32 psc)
{
//′Ë2¿·ÖDèêÖ¶ˉDT¸ÄIO¿úéèÖÃ
RCC->APB2ENR|=1<<0; //TIM1ê±Öóê1Äü
      RCC->AHB1ENR|=1<<1;//ê1ÄüPORTBê±Öó
RCC->AHB1ENR|=1<<0;//ê1ÄüPORTAê±Öó

GPIO_Set(GPIOA,PIN9|PIN8|PIN10|PIN11,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU);//¸′óÃ1|Äü,éÏà-êä3ö
GPIO_AF_Set(GPIOA,10,2); //PB1,AF2
GPIO_AF_Set(GPIOA,11,2); //PB1,AF2
GPIO_AF_Set(GPIOA,8,2); //PB1,AF2
GPIO_AF_Set(GPIOA,9,2); //PB1,AF2

TIM1->ARR=arr; //éè¶¨¼ÆêyÆ÷×Ô¶ˉÖØ×°Öμ
TIM1->PSC=psc; //Ô¤·ÖÆμÆ÷2»·ÖÆμ

TIM1->CCMR1|=6<<12;    //CH2 PWM1Ä￡ê½
TIM1->CCMR1|=1<<11; //CH2 Ô¤×°ÔØê1Äü

TIM1->CCMR1|=6<<4; //CH1 PWM1Ä￡ê½
TIM1->CCMR1|=1<<3; //CH1 Ô¤×°ÔØê1Äü

TIM1->CCMR2|=6<<12;    //CH4 PWM1Ä￡ê½
TIM1->CCMR2|=1<<11; //CH4 Ô¤×°ÔØê1Äü

TIM1->CCMR2|=6<<4; //CH3 PWM1Ä￡ê½
TIM1->CCMR2|=1<<3; //CH3 Ô¤×°ÔØê1Äü

TIM1->CCER|=1<<0; //OC1 êä3öê1Äü
TIM1->CCER|=1<<4; //OC2 êä3öê1Äü
TIM1->CCER|=1<<8; //OC3 êä3öê1Äü
TIM1->CCER|=1<<12;    //OC4 êä3öê1Äü
TIM1->CR1|=1<<7;    //ARPEê1Äü

TIM1->CR1|=1<<0; //ê1Äü¶¨ê±Æ÷3
}
void TIM2_PWM_Init(u32 arr,u32 psc)
{
//′Ë2¿·ÖDèêÖ¶ˉDT¸ÄIO¿úéèÖÃ
RCC->APB1ENR|=1<<0; //TIM2ê±Öóê1Äü

RCC->AHB1ENR|=1<<1;//ê1ÄüPORTBê±Öó
RCC->AHB1ENR|=1<<0;//ê1ÄüPORTAê±Öó
GPIO_Set(GPIOB,PIN3|PIN10|PIN11,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU);//¸′óÃ1|Äü,éÏà-êä3ö
GPIO_Set(GPIOA,PIN15,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU);

GPIO_AF_Set(GPIOB,10,2); //PB1,AF2
GPIO_AF_Set(GPIOB,11,2); //PB1,AF2
GPIO_AF_Set(GPIOB,2,2); //PB1,AF2
GPIO_AF_Set(GPIOA,15,2); //PB1,AF2

TIM2->ARR=arr; //éè¶¨¼ÆêyÆ÷×Ô¶ˉÖØ×°Öμ
TIM2->PSC=psc; //Ô¤·ÖÆμÆ÷2»·ÖÆμ

TIM2->CCMR1|=6<<12;    //CH2 PWM1Ä￡ê½
TIM2->CCMR1|=1<<11; //CH2 Ô¤×°ÔØê1Äü

TIM2->CCMR1|=6<<4; //CH1 PWM1Ä￡ê½
TIM2->CCMR1|=1<<3; //CH1 Ô¤×°ÔØê1Äü

TIM2->CCMR2|=6<<12;    //CH4 PWM1Ä￡ê½
TIM2->CCMR2|=1<<11; //CH4 Ô¤×°ÔØê1Äü

TIM2->CCMR2|=6<<4; //CH3 PWM1Ä￡ê½
TIM2->CCMR2|=1<<3; //CH3 Ô¤×°ÔØê1Äü

TIM2->CCER|=1<<0; //OC1 êä3öê1Äü
TIM2->CCER|=1<<4; //OC2 êä3öê1Äü
TIM2->CCER|=1<<8; //OC3 êä3öê1Äü
TIM2->CCER|=1<<12;    //OC4 êä3öê1Äü
//TIM3->CCER|=1<<13;    //OC4 ¸ßμçÆ½óDD§
TIM2->CR1|=1<<7;    //ARPEê1Äü

TIM2->CR1|=1<<0; //ê1Äü¶¨ê±Æ÷3
}

arabotue · 发表于 2021-10-17 02:59:36

更新，将TIM1和TIM2的AF复用功能改成了AF1之后，TIM2的四个通道开始输出PWM信号，但是TIM1不输出PWM信号，只是输出高电平。

arabotue · 发表于 2021-10-17 03:38:05

更新，已经自己解决，根据教程设置高级定时器TIM1->BDTR的MOE位后TIM1正常输出。

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Stm32f427 TIM1和TIM2的PWM通道无法输出PWM信号

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