读编码器脉冲，串口打印出错

顾平生

int main(void)
{  
vu8 key=0;
  //u8 cnt=0;
   u16 pulses=0;
// u8  V=0;
delay_init();      
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);   
uart_init(115200);
  LED_Init();     
  //TIM4_Mode_Config();
  TIM4_Init();
  EXTI_PA1_Config();
  TIM3_PWM_Init(999,71);
TIM_SetCompare2(TIM3,850);
  while(1)
{
  pulses=TIM_GetCounter(TIM4);
   //pulses=TIM4_CNT/4;
//  V=0.25*pulses;//(pulses/4)/600*y60
  printf("pulses:%d\r\n",pulses);
  delay_ms(200);

}
}
主程序这样设置。还有个timer.c    TIM3输出PWM，TIM4定时器，PA1做编码器z相外部中断输入。现在问题是编码器一转，串口打印直接停止，怎么解决？
#include "timer.h"
#include "led.h"

#include "usart.h"
void TIM3_Int_Init(u16 arr,u16 psc)
{
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //ʱÖÓʹÄÜ
TIM_TimeBaseStructure.TIM_Period = arr;
TIM_TimeBaseStructure.TIM_Prescaler =psc;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE );
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
TIM_Cmd(TIM3, ENABLE);  
        
}

void TIM3_IRQHandler(void)  
{
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)
  {
  TIM_ClearITPendingBit(TIM3, TIM_IT_Update  );  
  //LED1=!LED1;
  }
}

void TIM3_PWM_Init(u16 arr,u16 psc)
{  
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  | RCC_APB2Periph_AFIO, ENABLE);  
//RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA  | RCC_APB2Periph_AFIO, ENABLE);

GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE); //Timer3²¿·ÖÖØÓ³Éä  TIM3_CH2->PB5


GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //TIM_CH2
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);


TIM_TimeBaseStructure.TIM_Period = arr;
TIM_TimeBaseStructure.TIM_Prescaler =psc;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC2Init(TIM3, &TIM_OCInitStructure);  
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);  



TIM_Cmd(TIM3, ENABLE);  
}
void TIM4_Init(void)
{
//TIM_EncoderMode            
                             //  2.
    GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
    TIM_ICInitTypeDef TIM_ICInitStructure;
   NVIC_InitTypeDef NVIC_InitStructure2;

    //PB6 ch1  A,PB7 ch2 B
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);//??TIM3??  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);//??GPIOA??
     
    GPIO_StructInit(&GPIO_InitStructure);//½«GPIO¡ªInitStructÖеIJÎÊý°´È±Ê¡ÖµÊäÈë
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;         
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//PA6 PA7¸¡¿ÕÊäÈë
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

   NVIC_InitStructure2.NVIC_IRQChannel = TIM4_IRQn;
    NVIC_InitStructure2.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure2.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure2.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure2);
   // NVIC_Configuration(2);

    TIM_DeInit(TIM4);
    TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
  TIM_TimeBaseStructure.TIM_Period =999*4; //????????   
    TIM_TimeBaseStructure.TIM_Prescaler = 0; //TIM3??????
    TIM_TimeBaseStructure.TIM_ClockDivision =TIM_CKD_DIV1 ;//?????? T_dts = T_ck_int   
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM????
    TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);              
                     
    //TIM_EncoderInterfaceConfig(TIM4, TIM_EncoderMode_TI12, TIM_ICPolarity_BothEdge ,TIM_ICPolarity_BothEdge);//????
    TIM_EncoderInterfaceConfig(TIM4, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising ,TIM_ICPolarity_Rising);
  TIM_ICStructInit(&TIM_ICInitStructure);      //½«½á¹¹ÌåÖеÄÄÚÈÝȱʡÊäÈë
  TIM_ICInitStructure.TIM_ICFilter = 0; //Â˲¨
    TIM_ICInit(TIM4, &TIM_ICInitStructure);//½«TIM_ICInitStructureÖеÄÖ¸¶¨²ÎÊý³õʼ»¯TIM4
  
    TIM_ClearFlag(TIM4, TIM_FLAG_Update);
    TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE);
    //Reset counter
    TIM4->CNT = 0;
    TIM_Cmd(TIM4, ENABLE);  
}
void TIM4_IRQHandler(void)   
{
if (TIM_GetITStatus(TIM4, TIM_IT_Update) != RESET)
  {
     ;
  }
  TIM_ClearITPendingBit(TIM2, TIM_IT_Update  );  
   TIM4->CNT = 0;//¸ÕÒþ
  //LED1=!LED1;
}
//ZÏà¹éÁã
void EXTI_PA1_Config(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    EXTI_InitTypeDef EXTI_InitStructure;
   NVIC_InitTypeDef NVIC_InitStructure1;
    /* config the extiline(PA1) clock and AFIO clock */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA  | RCC_APB2Periph_AFIO,ENABLE);
  
   /* config the NVIC */
    NVIC_InitStructure1.NVIC_IRQChannel = EXTI1_IRQn;
    NVIC_InitStructure1.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure1.NVIC_IRQChannelSubPriority = 1;
    NVIC_InitStructure1.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure1);
    /* EXTI line gpio config(PA1) */   
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;      
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;  //ÉÏÀ­ÊäÈë              
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    /* EXTI line(PA1) mode config */
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource1);
    EXTI_InitStructure.EXTI_Line = EXTI_Line1;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;      //ϽµÑØÖжϣ¿
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure);
}
void EXTI1_IRQHandler(void)
{
    TIM4->CNT = 0;  
   TIM_Cmd(TIM4, ENABLE);
    EXTI_ClearITPendingBit(EXTI_Line1);                                      
}

顾平生

有些注释没删干净，看的时候有劳各位大佬了。

顾平生

大佬快来

顾平生

再顶一下，各位大神看一下哈