两路超声波输入捕获，一路始终不好用

钻石徐老二 · 发表于 2016-6-2 12:04:55

下面是程序。大神帮我看看，在开发板原来的基础上改的两路，但是只有一路好用，只有通道一好用，通道二不好用，麻烦帮我看看我是不是哪里出错了，我觉得应该是定时器捕获中断那里出错了，大神帮忙看看呗，麻烦你们了，谢谢

#include "timer.h"
#include "led.h"
#include "usart.h"

TIM_ICInitTypeDef TIM5_ICInitStructure;
void TIM5_Cap_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_ResetBits(GPIOA,GPIO_Pin_0);

/***************************************/
GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_ResetBits(GPIOA,GPIO_Pin_1);

TIM_TimeBaseStructure.TIM_Period = arr;
TIM_TimeBaseStructure.TIM_Prescaler =psc;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure);


TIM5_ICInitStructure.TIM_Channel = TIM_Channel_1;
TIM5_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM5_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM5_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM5_ICInitStructure.TIM_ICFilter = 0x00
TIM_ICInit(TIM5, &TIM5_ICInitStructure);

/***************************************/
TIM5_ICInitStructure.TIM_Channel = TIM_Channel_2;
TIM5_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM5_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM5_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM5_ICInitStructure.TIM_ICFilter = 0x00;
TIM_ICInit(TIM5, &TIM5_ICInitStructure);



//ÖÐ¶Ï·Ö×é³õÊ¼»¯
NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

TIM_ITConfig(TIM5,TIM_IT_Update|TIM_IT_CC1,ENABLE);
/***************************************/
TIM_ITConfig(TIM5,TIM_IT_Update|TIM_IT_CC2,ENABLE);/
TIM_Cmd(TIM5,ENABLE );

}
u8  TIM5CH1_CAPTURE_STA=0;
u16 TIM5CH1_CAPTURE_VAL;

u8  TIM5CH2_CAPTURE_STA=0;
u16 TIM5CH2_CAPTURE_VAL;


void TIM5_IRQHandler(void)
{
  if((TIM5CH1_CAPTURE_STA&0X80)==0)
{
  if (TIM_GetITStatus(TIM5, TIM_IT_Update) != RESET)

  {
if(TIM5CH1_CAPTURE_STA&0X40)
{
if((TIM5CH1_CAPTURE_STA&0X3F)==0X3F)
{
   TIM5CH1_CAPTURE_STA|=0X80;
   TIM5CH1_CAPTURE_VAL=0XFFFF;
}else TIM5CH1_CAPTURE_STA++;
}
  }

  /////////////////////*//////////////////////////*/
  else if((TIM5CH2_CAPTURE_STA&0X80)==0)
{
  if (TIM_GetITStatus(TIM5, TIM_IT_Update) != RESET)

  {
if(TIM5CH2_CAPTURE_STA&0X40)
{
if((TIM5CH2_CAPTURE_STA&0X3F)==0X3F)
{
   TIM5CH2_CAPTURE_STA|=0X80;
   TIM5CH2_CAPTURE_VAL=0XFFFF;
}else TIM5CH2_CAPTURE_STA++;
}
  }
///////////////////////////////////////////////////////

  if (TIM_GetITStatus(TIM5, TIM_IT_CC1) != RESET)
  {
if(TIM5CH1_CAPTURE_STA&0X40)
{
TIM5CH1_CAPTURE_STA|=0X80;
TIM5CH1_CAPTURE_VAL=TIM_GetCapture1(TIM5);
   TIM_OC1PolarityConfig(TIM5,TIM_ICPolarity_Rising);
}else
{
TIM5CH1_CAPTURE_STA=0;
TIM5CH1_CAPTURE_VAL=0;
   TIM_SetCounter(TIM5,0);
TIM5CH1_CAPTURE_STA|=0X40;
   TIM_OC1PolarityConfig(TIM5,TIM_ICPolarity_Falling);
}
  }
  }

/////////////////////////////////////////////////////////
else if (TIM_GetITStatus(TIM5, TIM_IT_CC2) != RESET)
  {
if(TIM5CH2_CAPTURE_STA&0X40)
{
TIM5CH2_CAPTURE_STA|=0X80;
TIM5CH2_CAPTURE_VAL=TIM_GetCapture2(TIM5);
   TIM_OC2PolarityConfig(TIM5,TIM_ICPolarity_Rising);
}else
{
TIM5CH2_CAPTURE_STA=0;
TIM5CH2_CAPTURE_VAL=0;
   TIM_SetCounter(TIM5,0);
TIM5CH2_CAPTURE_STA|=0X40;
   TIM_OC2PolarityConfig(TIM5,TIM_ICPolarity_Falling);
}
  }
  }

  TIM_ClearITPendingBit(TIM5, TIM_IT_CC1|TIM_IT_Update);
TIM_ClearITPendingBit(TIM5, TIM_IT_CC2|TIM_IT_Update);

}