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- 2016-5-5
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配置的TIM1的4通道,可不知道哪里出问题了 ,不能正常输出,望大神们指教。初始化代码如下:void TIM1_PWM_Init(u32 arr,u32 psc)
{
RCC->APB2ENR|=1<<0; //TIM1ê±Öóê1Äü
RCC->AHB1ENR|=1<<4; //ê1ÄüPORTEê±Öó
GPIO_Set(GPIOE,PIN9|PIN11|PIN13|PIN14,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU);//¸′óÃ1|Äü,éÏà-êä3ö
GPIO_AF_Set(GPIOE,9,1); //PE9,AF1
GPIO_AF_Set(GPIOE,11,1); //PE11,AF1
GPIO_AF_Set(GPIOE,13,1); //PE13,AF1
GPIO_AF_Set(GPIOE,14,1); //PE14,AF1
TIM1->ARR=arr; //é趨¼ÆêyÆ÷×Ô¶ˉ֨װÖμ
TIM1->PSC=psc; //Ô¤·ÖÆμÆ÷2»·ÖÆμ
//ch1
TIM1->CCMR1|=6<<4; //CH1 PWM1Ä£ê½
TIM1->CCMR1|=1<<3; //CH1 Ô¤×°ÔØê1Äü
TIM1->CCER|=1<<0; //OC1 êä3öê1Äü
TIM1->CCER|=1<<1; //OC1 μíμçÆ½óDD§
//ch2
TIM1->CCMR1|=6<<12; //CH2 PWM1Ä£ê½
TIM1->CCMR1|=1<<11; //CH2 Ô¤×°ÔØê1Äü
TIM1->CCER|=1<<4; //OC2 êä3öê1Äü
TIM1->CCER|=1<<5; //OC2 μíμçÆ½óDD§
//ch3
TIM1->CCMR2|=6<<4; //CH3 PWM1Ä£ê½
TIM1->CCMR2|=1<<3; //CH3 Ô¤×°ÔØê1Äü
TIM1->CCER|=1<<8; //OC3 êä3öê1Äü
TIM1->CCER|=1<<9; //OC3 μíμçÆ½óDD§
//ch4
TIM1->CCMR2|=6<<12; //CH4 PWM1Ä£ê½
TIM1->CCMR2|=1<<11; //CH4 Ô¤×°ÔØê1Äü
TIM1->CCER|=1<<12; //OC4 êä3öê1Äü
TIM1->CCER|=1<<13; //OC4 μíμçÆ½óDD§
TIM1->BDTR|=1<<15; //TIM1 Ö÷êä3öê1Äü
TIM1->CR1|=1<<7; //ARPEê1Äü
TIM1->CR1|=1<<0; //ê1Äü¶¨ê±Æ÷1
}
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