定时器加上一截内容造成程序执行错误

只看该作者 · 2013-1-29 10:07

keil4编译器，用的是定时器4的输出比较功能，定时器内容为计算输出脉冲数量
代码如下
void TIM4_IRQHandler(void)
{
  u16 capture;
  if(TIM_GetITStatus(TIM4, TIM_IT_CC1) != RESET)//捕获/比较中断1
{
TIM_ClearITPendingBit(TIM4, TIM_IT_CC1);//清除中断标志位
// TIM_Cmd(TIM1,ENABLE);
capture = TIM_GetCapture1(TIM4);
TIM_SetCompare1(TIM4, capture + CCR1_Val);
     if(NumPulse++>=Num_PULE)
     {
NumPulse = 0;
     Cho_CHx=1;
     //TIM_Cmd(TIM1, ENABLE);
GPIO_ResetBits(GPIOB, GPIO_Pin_6);//将端口置低
     TIM_CCxCmd(TIM4,TIM_Channel_1, DISABLE);//通道一关断
TIM_ITConfig(TIM4, TIM_IT_CC1, DISABLE);//中断禁止
     //NumPulse = 0;
     TIM_Cmd(TIM4,DISABLE);
     //TIM_Cmd(TIM3,ENABLE);
     }
}
  else if(TIM_GetITStatus(TIM4, TIM_IT_CC4) != RESET)//捕获/比较中断1
{
TIM_ClearITPendingBit(TIM4, TIM_IT_CC4);//清除中断标志位
// TIM_Cmd(TIM1,ENABLE);
capture = TIM_GetCapture4(TIM4);
TIM_SetCompare4(TIM4, capture + CCR1_Val);
     if(NumPulse++>=Num_PULE)
     {
NumPulse = 0;
     Cho_CHx=2;
     //TIM_Cmd(TIM1, ENABLE);
GPIO_ResetBits(GPIOB, GPIO_Pin_9);//将端口置低
     TIM_CCxCmd(TIM4,TIM_Channel_4, DISABLE);//通道一关断
TIM_ITConfig(TIM4, TIM_IT_CC4, DISABLE);//中断禁止

     TIM_Cmd(TIM4,DISABLE);
     //TIM_Cmd(TIM3,ENABLE);
     }
}
else if(TIM_GetITStatus(TIM4, TIM_IT_CC2) != RESET)//捕获/比较中断2
{
TIM_ClearITPendingBit(TIM4, TIM_IT_CC2);//清除中断标志位
capture = TIM_GetCapture2(TIM4);
TIM_SetCompare2(TIM4, capture + CCR1_Val);
     if(NumPulse++>=Num_PULE)
     {
NumPulse = 0;
     Cho_CHx=4;
GPIO_ResetBits(GPIOB, GPIO_Pin_7);//将端口置低
     TIM_CCxCmd(TIM4,TIM_Channel_2, DISABLE);//通道二关断
TIM_ITConfig(TIM4, TIM_IT_CC2, DISABLE);//中断禁止
     TIM_Cmd(TIM4,DISABLE);
     }
}
//  else if(TIM_GetITStatus(TIM4, TIM_IT_CC3) != RESET)//捕获/比较中断3
// {
// TIM_ClearITPendingBit(TIM4, TIM_IT_CC3);//清除中断标志位
// capture = TIM_GetCapture3(TIM4);
// TIM_SetCompare3(TIM4, capture + CCR1_Val);
//      if(NumPulse++>=Num_PULE)
//      {
// NumPulse = 0;
//      Cho_CHx=1;
// GPIO_ResetBits(GPIOB, GPIO_Pin_8);//将端口置低
//      TIM_CCxCmd(TIM4,TIM_Channel_3, DISABLE);//通道三关断
// TIM_ITConfig(TIM4, TIM_IT_CC3, DISABLE);//中断禁止
//      TIM_Cmd(TIM4,DISABLE);
//      }
// }
}
加上屏蔽的那段代码，程序执行错误，不知为什么，求高手指教