我用的是TIM2的输入捕获功能 硬件管脚为：PD4 TIM2_CH1
设置代码如下，测试可用 ，你大致参考下，里面注释语句可能不对，你只看没有被注释掉的代码就可以了。
- void TIM2_Config(void)
- {
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- // GPIO_Init(GPIOD,GPIO_PIN_4,GPIO_MODE_IN_PU_NO_IT);//霍尔信号捕获输入
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- GPIO_Init(GPIOA,(GPIO_Pin_TypeDef)(GPIO_PIN_1|GPIO_PIN_2),GPIO_MODE_OUT_PP_HIGH_SLOW);//
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- /* Set the Prescaler value */
- TIM2->PSCR = (uint8_t)(TIM2_PRESCALER);
- /* Set the Autoreload value */
- TIM2->ARRH = (uint8_t)(TIM2_PERIOD >> 8);
- TIM2->ARRL = (uint8_t)(TIM2_PERIOD);
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- /* TI1 Configuration */
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- /* Disable the Channel 1: Reset the CCE Bit */
- TIM2->CCER1 &= (uint8_t)(~TIM2_CCER1_CC1E);
- /* Select the Input and set the filter */
- TIM2->CCMR1 = (uint8_t)((uint8_t)(TIM2->CCMR1 & (uint8_t)(~(uint8_t)( TIM2_CCMR_CCxS | TIM2_CCMR_ICxF )))
- | (uint8_t)(((TIM2_ICSELECTION_DIRECTTI)) | ((uint8_t)( 0x00 << 4))));
- /* Select the Polarity */
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- //TIM2->CCER1 &= (uint8_t)(~TIM2_CCER1_CC1P);//上升沿
- TIM2->CCER1 |= TIM2_CCER1_CC1P;//下降沿
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- /* Set the CCE Bit */
- TIM2->CCER1 |= TIM2_CCER1_CC1E;
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- /* Reset the IC1PSC Bits &Set the IC1PSC value */
- TIM2->CCMR1 = (TIM2->CCMR1 & 0xF3)| TIM2_ICPSC_DIV1;
- TIM2->CR1 |= 0x01;//使能TIM2
- // TIM2->CR1 |= 0x04;// URS 位1：当更新请求使能时，只有计数器溢出才产生更新中断
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- /* Enable the Interrupt sources */
- TIM2->IER |= TIM2_IT_CC1;
- TIM2->IER |=TIM2_IT_UPDATE;
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- }
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