138 lines
3.7 KiB
C
138 lines
3.7 KiB
C
/****************************************************************************
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* apps/system/i2c/i2c_hexdump.c
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*
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* Copyright (C) 2005, 2016-2019 David S. Alessio. All rights reserved.
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* Author: David S. Alessio <david.s.alessio@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdio.h>
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#include <inttypes.h>
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#include <ctype.h>
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#include "i2ctool.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: hexdump_line
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****************************************************************************/
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static int hexdump_line(FILE *ostream, void *addr, int len)
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{
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int i;
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uint8_t *p;
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if (len <= 0)
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{
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return 0;
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}
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/* print at most 16 chars */
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if (len > 16)
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{
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len = 16;
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}
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/* print hex */
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for (i = 0, p = addr; i < len; ++i, ++p)
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{
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if (i % 8 == 0)
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{
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fputc(' ', ostream);
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}
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fprintf(ostream, "%02x ", *p);
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}
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/* pad if necessary */
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if (i <= 8)
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{
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fputc(' ', ostream);
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}
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while (i++ < 16)
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{
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fputs(" ", ostream);
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}
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/* print ASCII */
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fputs(" |", ostream);
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for (i = 0, p = addr; i < len; ++i, ++p)
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{
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fputc(isprint(*p) ? *p : '.', ostream);
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}
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/* pad if necessary */
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while (i++ < 16)
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{
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fputc(' ', ostream);
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}
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fputs("|\n", ostream);
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return len;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void i2ctool_hexdump(FILE *outstream, void *addr, int len)
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{
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int nbytes;
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uint8_t *p = addr;
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/* print one line at a time */
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while (len > 0)
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{
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/* print address */
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fprintf(outstream, "%08x ", p - (uint8_t *) addr);
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/* print one line of data */
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nbytes = hexdump_line(outstream, p, len);
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len -= nbytes;
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p += nbytes;
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}
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}
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