csu3_am335x/EVSE/GPL/open-plc-utils-0.3/tools/hexwrite.c

/*====================================================================*
 *
 *   Copyright (c) 2013 Qualcomm Atheros, Inc.
 *
 *   All rights reserved.
 *
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 *   without modification, are permitted (subject to the limitations
 *   in the disclaimer below) provided that the following conditions
 *   are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
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 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials
 *     provided with the distribution.
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 *   * Neither the name of Qualcomm Atheros nor the names of
 *     its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written
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 *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
 *   COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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/*====================================================================*
 *
 *   void hexwrite (signed fd, void const * memory, size_t extent);
 *
 *   number.h
 *
 *   write a memory region as a stream of hexadecimal characters;
 *
 *--------------------------------------------------------------------*/

#ifndef HEXWRITE_SOURCE
#define HEXWRITE_SOURCE

#include <unistd.h>

#include "../tools/types.h"
#include "../tools/number.h"

void hexwrite (signed fd, void const * memory, size_t extent)

{
	byte * offset = (byte *)(memory);
	while (extent--)
	{
		byte byte = * offset;
		write (fd, &DIGITS_HEX [(byte >> 4) & 0x0F], sizeof (byte));
		write (fd, &DIGITS_HEX [(byte >> 0) & 0x0F], sizeof (byte));
		offset++;
	}
	return;
}

#endif