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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 "NorFlashCommon.h"
#include <utility/trace.h>
#include <string.h>
//------------------------------------------------------------------------------
// Internal macros
//------------------------------------------------------------------------------
#define WRITE_COMMAND8(commandAddress, command) \
{*(volatile unsigned char *)(commandAddress) = (unsigned char) command;}
#define WRITE_COMMAND16(commandAddress, command) \
{*(volatile unsigned short *)(commandAddress) = (unsigned short) command;}
#define WRITE_COMMAND32(commandAddress, command) \
{*(volatile unsigned int *)(commandAddress) = (unsigned int) command;}
#define WRITE_DATA8(dataAddress, data) \
{(*((volatile unsigned char *) dataAddress)) = (unsigned char) data;}
#define WRITE_DATA16(dataAddress, data) \
{(*((volatile unsigned short *) dataAddress)) = (unsigned short) data;}
#define WRITE_DATA32(dataAddress, data) \
{(*((volatile unsigned int *) dataAddress)) = (unsigned int) data;}
#define READ_DATA8(dataAddress) \
(*((volatile unsigned char *) dataAddress))
#define READ_DATA16(dataAddress) \
(*((volatile unsigned short *) dataAddress))
#define READ_DATA32(dataAddress) \
(*((volatile unsigned int *) dataAddress))
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// Write a command to address.
/// \param busWidth Bus width in device.
/// \param commandAddress Command address offset.
/// \param command Command to be send.
//------------------------------------------------------------------------------
unsigned char WriteCommand(
unsigned char busWidth,
unsigned int commandAddress,
unsigned int command)
{
if (busWidth == 8 ){
WRITE_COMMAND8(commandAddress, command);
}
else if( busWidth == 16 ){
WRITE_COMMAND16(commandAddress, command);
}
else if(busWidth == 32 ){
WRITE_COMMAND32(commandAddress, command);
}
return 0;
}
//------------------------------------------------------------------------------
/// Reads data from the NorFlash chip into the provided buffer.
/// \param busWidth Bus width in device.
/// \param address Address of data.
/// \param buffer Buffer where the data will be stored.
//------------------------------------------------------------------------------
void ReadRawData(
unsigned char busWidth,
unsigned int address,
unsigned char *buffer)
{
if (busWidth == 8 ){
*buffer = READ_DATA8(address);
}
else if( busWidth == 16 ){
unsigned short *buffer16 = (unsigned short *) buffer;
*buffer16 = READ_DATA16(address);
}
else if(busWidth == 32 ){
unsigned int *buffer32 = (unsigned int *) buffer;
*buffer32 = READ_DATA32(address);
}
}
//------------------------------------------------------------------------------
/// Writes data to the NorFlash chip from the provided buffer.
/// \param busWidth Bus width in device.
/// \param address Address of data.
/// \param buffer Buffer where the data will be stored.
//------------------------------------------------------------------------------
void WriteRawData(
unsigned char busWidth,
unsigned int address,
unsigned char *buffer)
{
if (busWidth == 8 ){
WRITE_DATA8(address, *buffer);
}
else if( busWidth == 16 ){
unsigned short *buffer16 = (unsigned short *) buffer;
WRITE_DATA16(address, *buffer16);
}
else if(busWidth == 32 ){
unsigned int *buffer32 = (unsigned int *) buffer;
WRITE_DATA32(address, *buffer32);
}
}
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