libuart2receive.c

Audio compression on embedded board

/*********************************************************************
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*                       Software License Agreement                   *
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*   The software supplied herewith by Microchip Technology           *
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/*****************************************************************************
**
**  Filename:     libuart2Receive.c
**
**  System:       RISC
**
**  Platform:     dsPIC30F6014A
**
**  Description:  This file contains only libuart2Receive() API.This API fills 
**                the user defined ping pong buffers with encoded speech 
**			      samples from U2RXREG registers of UART2.
**
*****************************************************************************/

#include "p30fxxxx.h"
#include "G711Lib_common.h"

/******************************************************************************
**
**  Function Name: libuart2Receive ( ) 
**
**  Description:   This API is called in the UART2 RECEIVE ISR for moving data
**                 from the UART2 RECEIVE buffer registers U2RXREG to the user
**                 defined ping pong buffers.It accesses members of the 
**                 codecsetup structure. It has no outputs.The user should take 
**                 care to set the UART2 RECEIVE buffer length such that the 
**                 number of samples per Block should be divisible by it.This 
**                 API is called when encoded  speech samples are received.
**
*******************************************************************************/

libuart2Receive ( )
{
  *codecdata.sampleComprsOpBuffer = U2RXREG;
  codecdata.sampleComprsOpBuffer++;
  *codecdata.sampleComprsOpBuffer = U2RXREG;
  codecdata.sampleComprsOpBuffer++;
  *codecdata.sampleComprsOpBuffer = U2RXREG;
  codecdata.sampleComprsOpBuffer++;
  *codecdata.sampleComprsOpBuffer = U2RXREG;
  codecdata.sampleComprsOpBuffer++;
}

/*-----------------------------------------------------------------------------
                              END OF FILE:  libuart2Receive.c
------------------------------------------------------------------------------*/