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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include "MSDIOFifo.h"
//------------------------------------------------------------------------------
// Internal variables
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
//! \brief Initializes a MSDIOFifo instance.
//! \param pFifo Pointer to the MSDIOFifo instance to initialize
//! \param pBuffer Pointer to a buffer used for read/write operation and
//! which must be blockSize bytes aligned.
//! \param bufferSize Total size of the buffer in bytes
//------------------------------------------------------------------------------
void MSDIOFifo_Init(MSDIOFifo *pFifo,
void * pBuffer, unsigned short bufferSize)
{
pFifo->pBuffer = pBuffer;
pFifo->bufferSize = bufferSize;
pFifo->inputNdx = 0;
pFifo->outputNdx = 0;
pFifo->inputTotal = 0;
pFifo->outputTotal = 0;
pFifo->inputState = MSDIO_IDLE;
pFifo->outputState = MSDIO_IDLE;
pFifo->fullCnt = 0;
pFifo->nullCnt = 0;
}
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