Stm32f103c8t6波形拷贝,TIM2CH2和TIM2CH3分别捕捉高电平和低电平

只看该作者 · 2014-11-22 21:48

本帖最后由 panyibin133 于 2014-11-22 22:32 编辑

下面是我根据原子的例子修改的中断代码，但是数据捕获为何数据是相同的?
void TIM2_IRQHandler(void)
{

      if((TIM2CH2_CAPTURE_STA&0X80)==0)//还未成功捕获
      {
            if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)

            {
                     TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
                     if(TIM2CH2_CAPTURE_STA&0X40)
                     {
                              if((TIM2CH2_CAPTURE_STA&0X3F)==0X3F)
                              {
                                    TIM2CH2_CAPTURE_STA|=0X80;
                                    TIM2CH2_CAPTURE_VAL=0XFFFF;
                              }else TIM2CH2_CAPTURE_STA++;
                     }
                     if(TIM2CH3_CAPTURE_STA&0X40)
                     {
                              if((TIM2CH3_CAPTURE_STA&0X3F)==0X3F)
                              {
                                    TIM2CH3_CAPTURE_STA|=0X80;
                                    TIM2CH3_CAPTURE_VAL=0XFFFF;
                              }else TIM2CH3_CAPTURE_STA++;
                     }
            }
            if (TIM_GetITStatus(TIM2, TIM_IT_CC2) != RESET)
            {
                     TIM_ClearITPendingBit(TIM2, TIM_IT_CC2);
                     if(TIM2CH2_CAPTURE_STA&0X40)
                     {
                              TIM2CH2_CAPTURE_STA|=0X80;
                              TIM2CH2_CAPTURE_VAL=TIM_GetCapture2(TIM2);
                              TIM_OC2PolarityConfig(TIM2,TIM_ICPolarity_Rising);
                     }
                     else
                     {
                              TIM2CH2_CAPTURE_STA=0;                      //清空
                              TIM2CH2_CAPTURE_VAL=0;
                              TIM_SetCounter(TIM2,0);
                              TIM2CH2_CAPTURE_STA|=0X40;
                              TIM_OC2PolarityConfig(TIM2,TIM_ICPolarity_Falling);
                     }

            }
            if (TIM_GetITStatus(TIM2, TIM_IT_CC3) != RESET)
            {
                     TIM_ClearITPendingBit(TIM2,TIM_IT_CC3);
                     if(TIM2CH3_CAPTURE_STA&0X40)
                     {
                              TIM2CH3_CAPTURE_STA|=0X80;
                              TIM2CH3_CAPTURE_VAL=TIM_GetCapture3(TIM2);
                              TIM_OC3PolarityConfig(TIM2,TIM_ICPolarity_Rising);
                     }
                     else
                     {
                              TIM2CH3_CAPTURE_STA=0;                      //清空
                              TIM2CH3_CAPTURE_VAL=0;
                              TIM_SetCounter(TIM2,0);
                              TIM2CH3_CAPTURE_STA|=0X40;
                              TIM_OC3PolarityConfig(TIM2,TIM_ICPolarity_Falling);
                     }

            }
      }
}
+4465
-4465
-1638
+1638
-1635
。。。。中间还有数据正表示高电平负表示低电平，但是貌似不对啊都一样，空调遥控器的红外数据低电平的完全不对。。。
-513
+513
+512
-512
我需要捕获拷贝的波形