接收中断一直进不去

2万 · 2023-3-31 21:06

PIC24EP512GUB814的串口程序中，接收中断一直进不去怎么回事

1万 · 2023-3-31 21:07

楼主详细说说怎么回事啊，这么说太笼统了

2万 · 2023-3-31 21:11

哪位大神能帮我看看程序吗？
/******************************************************************************/
/* Files to Include                                                          */
/******************************************************************************/

/* Device header file */
#if defined(__XC16__)
#include <xc.h>
#elif defined(__C30__)
#if defined(__PIC24E__)
         #include <p24Exxxx.h>
#elif defined (__PIC24F__)||defined (__PIC24FK__)
      #include <p24Fxxxx.h>
#elif defined(__PIC24H__)
      #include <p24Hxxxx.h>
#endif
#endif

#include <stdint.h>       /* Includes uint16_t definition                   */
#include <stdbool.h>    /* Includes true/false definition                */

#include "system.h"       /* System funct/params, like osc/peripheral config */
#include "user.h"       /* User funct/params, such as InitApp             */
#include "libpic30.h"    /* C30函数库                                     */
#include "common.h"
/******************************************************************************/
/* Global Variable Declaration                                              */
/******************************************************************************/
#define ModPulseCtl PORTDbits.RD1
/* i.e. uint16_t <variable_name>; */
uint8_t ReceivedState = 0;
uint8_t ReceivedChar = 0;
uint8_t UartReceivedData[4] = {0,0,0,0} ;
uint16_t Int_Mask = 0;       /* 中断标志 */
/******************************************************************************/
/* Main Program                                                             */
/******************************************************************************/
void __attribute__ ( (interrupt, no_auto_psv) ) _U1RXInterrupt( void )
{
IFS0bits.U1RXIF = 0;
switch  ( ReceivedState )
{
      case 0:
                  ReceivedChar = U1RXREG;
                  if( ReceivedChar == 0x55 ) ReceivedState = 1;
                  else ReceivedState = 0;
                  break;
      case 1:
                  ReceivedChar = U1RXREG;
                  if( ReceivedChar == 0xAA ) ReceivedState = 2;
                  else ReceivedState = 0;
                  break;
      case 2:
                  UartReceivedData[0] = U1RXREG;
                  ReceivedState = 3;
                  break;
      case 3:
                  UartReceivedData[1] = U1RXREG;
                  ReceivedState = 4;
                  break;
      case 4:
                  UartReceivedData[2] = U1RXREG;
                  ReceivedState = 5;
                  break;
      case 5:
                  UartReceivedData[3] = U1RXREG;
                  ReceivedState = 6;
                  break;
      case 6:
                  ReceivedChar = U1RXREG;
                  if( ReceivedChar == 0x5A ) ReceivedState = 7;
                  else ReceivedState = 0;
                  break;
      case 7:
                  ReceivedChar = U1RXREG;
                  if( ReceivedChar == 0xA5 )
                  {
                     ReceivedState = 0;
                     Int_Mask = 1;
                  }
                  else ReceivedState = 0;
                  break;
}
}

/*此段关于串口的程序在网络传输时不需要*/
void __attribute__ ( (interrupt, no_auto_psv) ) _U1TXInterrupt( void )
{
IFS0bits.U1TXIF = 0;
}

void __attribute__((interrupt, auto_psv)) _DMA0Interrupt(void)
{
_DMA0IF = 0; /* Clear DMA interrupt flag to prepare for next block */
}
int16_t main(void)
{

/* Configure the oscillator for the device */
ConfigureOscillator();

/* Initialize IO ports and peripherals */
Port_Inint();
InitApp();
Interrupt_Init();
/* TODO <INSERT USER APPLICATION CODE HERE> */

while(1)
{
if( UartReceivedData[1] == 0x01 )
{  ModPulseCtl = 1;
      U1TXREG  = 0x23; }
else
         ModPulseCtl = 0;

}
}

void InitApp(void)
{

Uart_Init();

}

void Uart_Init(void)
      {
      U1MODEbits.STSEL = 0;          // 1-Stop bit
      U1MODEbits.PDSEL = 0;          // No Parity, 8-Data bits
      U1MODEbits.ABAUD = 0;          // Auto-Baud disabled
      U1MODEbits.BRGH = 0;          // Low-Speed mode
      U1MODEbits.UEN = 0;
      U1BRG = 20;                   // Baud Rate setting for 115200

      U1STAbits.URXISEL0 = 0;  //Bits6,7 Int. on character recieved
      U1STAbits.URXISEL1 = 0;  //Bits6,7 Int. on character recieved

      U1STAbits.UTXISEL0 = 0;
      U1STAbits.UTXISEL1 = 0;

      RPOR5bits.RP84R = 1;          //TXs
      RPINR18bits.U1RXR = 83;       //RX

      U1MODEbits.UARTEN = 1;  // And turn the peripheral on
      U1STAbits.UTXEN = 1;
      }