ff_memory.c

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/*****************************************************************************
 *  FullFAT - High Performance, Thread-Safe Embedded FAT File-System         *
 *  Copyright (C) 2009  James Walmsley (james@worm.me.uk)                    *
 *                                                                           *
 *  This program is free software: you can redistribute it and/or modify     *
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 *  (at your option) any later version.                                      *
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 *  This program is distributed in the hope that it will be useful,          *
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *
 *  GNU General Public License for more details.                             *
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 *  IMPORTANT NOTICE:                                                        *
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 *  Alternative Licensing is available directly from the Copyright holder,   *
 *  (James Walmsley). For more information consult LICENSING.TXT to obtain   *
 *  a Commercial license.                                                    *
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 *****************************************************************************
 *  See http://worm.me.uk/fullfat for more information.                      *
 *  Or  http://fullfat.googlecode.com/ for latest releases and the wiki.     *
 *****************************************************************************/

#include "ff_memory.h"
#include "ff_config.h"

/*
 * HT inlined these functions
 *
 * Not much left for the C-module
 */


#ifndef FF_INLINE_MEMORY_ACCESS
FF_T_UINT8 FF_getChar(FF_T_UINT8 *pBuffer, FF_T_UINT32 aOffset) {
    return (FF_T_UINT8) (pBuffer[aOffset]);
}

FF_T_UINT16 FF_getShort(FF_T_UINT8 *pBuffer, FF_T_UINT32 aOffset) {
    FF_T_UN16 u16;
    pBuffer += aOffset;
    u16.bytes.u8_1 = pBuffer[1];
    u16.bytes.u8_0 = pBuffer[0];
    return u16.u16;
}

FF_T_UINT32 FF_getLong(FF_T_UINT8 *pBuffer, FF_T_UINT32 aOffset) {
    FF_T_UN32 u32;
    pBuffer += aOffset;
    u32.bytes.u8_3 = pBuffer[3];
    u32.bytes.u8_2 = pBuffer[2];
    u32.bytes.u8_1 = pBuffer[1];
    u32.bytes.u8_0 = pBuffer[0];
    return u32.u32;
}

void FF_putChar(FF_T_UINT8 *pBuffer, FF_T_UINT32 aOffset, FF_T_UINT8 Value) {
    pBuffer[aOffset] = Value;
}

void FF_putShort(FF_T_UINT8 *pBuffer, FF_T_UINT32 aOffset, FF_T_UINT16 Value) {
    FF_T_UN16 u16;
    u16.u16 = Value;
    pBuffer += aOffset;
    pBuffer[0] = u16.bytes.u8_0;
    pBuffer[1] = u16.bytes.u8_1;
}

void FF_putLong(FF_T_UINT8 *pBuffer, FF_T_UINT32 aOffset, FF_T_UINT32 Value) {
    FF_T_UN32 u32;
    u32.u32 = Value;
    pBuffer += aOffset;
    pBuffer[0] = u32.bytes.u8_0;
    pBuffer[1] = u32.bytes.u8_1;
    pBuffer[2] = u32.bytes.u8_2;
    pBuffer[3] = u32.bytes.u8_3;
}
#endif