libuart2receiveisr.c

G711在dsPIC33FJ256GP506下的应用

/*********************************************************************
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*                       Software License Agreement                   *
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*   The software supplied herewith by Microchip Technology           *
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*   for use solely and exclusively on Microchip dsPIC                *
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/******************************************************************************
**
**  Filename:     libuart2ReceiveIsr.c
**
**  System:       RISC
**
**  Platform:     dsPIC33F
**
**  Description:  This file contains only only one ISR for handling UART2 interrupt.
********************************************************************************/

#include <p33Fxxxx.h>
#include "G711Lib_common.h"

//-----------------------------------------------------------------------------
//Global Variables
//-----------------------------------------------------------------------------
extern volatile unsigned int fRxCpl, fRxstop;

/******************************************************************************
**
**  Function Name: _U2RXInterrupt
**
**  Description:    This ISR for UART2 interrupt handles data Error Code, Sent
**                  by the other board on Loss of Reception of a block of data.
**
********************************************************************************/
void __attribute__((interrupt, no_auto_psv))  _U2RXInterrupt ( void )
{
  //Check for the Stop Code.
  if ( U2RXREG == 0x16 )
  {
    fRxstop = 1;					          //Clear the flags.
	fRxCpl = 0;
	codecdata.fBlockplayed = 0x00;
  }
  IFS1bits.U2RXIF = 0x00;			          //Clear the Uart2 Interrupt Flag.
}

/*-----------------------------------------------------------------------------
					  END OF FILE:libuart2ReceiveIsr.c
-------------------------------------------------------------------------------*/