dciisr_si3000loopback.c

来自「Audio compression on embedded board」· C语言 代码 · 共 57 行

/*********************************************************************
*                                                                    *
*                       Software License Agreement                   *
*                                                                    *
*   The software supplied herewith by Microchip Technology           *
*   Incorporated (the "Company") for its dsPIC controller            *
*   is intended and supplied to you, the Company's customer,         *
*   for use solely and exclusively on Microchip dsPIC                *
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*   THIS SOFTWARE IS PROVIDED IN AN "AS IS" CONDITION.  NO           *
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#include "p30fxxxx.h"
#include "G711Lib_common.h"
#include "G711Lib_si3000.h"

/******************************************************************************
**
**  FunctionName: _DCIInterrupt
**
**  Description:  This ISR for DCI interrupt handles data reads from DCI buffer 
**                registers RXBUFx,gives for compression and loads the expanded
**                samples to DCI buffer registers TXBUFx to/from the ping pong
**                buffers created by the user.
**                             
******************************************************************************/
void __attribute__((interrupt, no_auto_psv))  _DCIInterrupt ( void )
{
   
  /* This function fills data into ping pong buffer */
  libSi3000DCIFill ( );

  if( codecdata.fBlockplayed == 0x01 )
  { 
    /* This function loads data from ping pong buffers to DCI TXBUFs registers */
    libSi3000LoadDCI ( );
  }

  _DCIIF = 0x00;
}

/*-----------------------------------------------------------------------------
                              END OF FILE:  dciIsr_G711Si3000LoopBack.c 
-----------------------------------------------------------------------------*/