123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157 |
- /****************************************************************************
- * libs/libc/misc/lib_dumpbuffer.c
- *
- * Copyright (C) 2009, 2011, 2014, 2016 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS 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.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <nuttx/compiler.h>
- #include <stdint.h>
- #include <debug.h>
- /****************************************************************************
- * Pre-processor definitions
- ****************************************************************************/
- #define _NITEMS 32 /* 32 bytes displayed per line */
- #define _LINESIZE (3 * _NITEMS + 4) /* 2 hex chars, ASCII char, 3 spaces, NUL */
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: lib_nibble
- *
- * Description:
- * Convert a binary nibble to a hexadecimal character.
- *
- ****************************************************************************/
- static char lib_nibble(unsigned char nibble)
- {
- if (nibble < 10)
- {
- return '0' + nibble;
- }
- else
- {
- return 'a' + nibble - 10;
- }
- }
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: lib_dumpbuffer
- *
- * Description:
- * Do a pretty buffer dump.
- *
- * A fairly large on-stack buffer is used for the case where timestamps are
- * applied to each line.
- *
- ****************************************************************************/
- void lib_dumpbuffer(FAR const char *msg, FAR const uint8_t *buffer,
- unsigned int buflen)
- {
- char buf[_LINESIZE];
- unsigned int i;
- unsigned int j;
- unsigned int k;
- syslog(LOG_INFO, "%s (%p):\n", msg, buffer);
- for (i = 0; i < buflen; i += _NITEMS)
- {
- FAR char *ptr = buf;
- /* Generate hex values: 2 * _NITEMS + 1 bytes */
- for (j = 0; j < _NITEMS; j++)
- {
- k = i + j;
- if (j == (_NITEMS / 2))
- {
- *ptr++ = ' ';
- }
- if (k < buflen)
- {
- *ptr++ = lib_nibble((buffer[k] >> 4) & 0xf);
- *ptr++ = lib_nibble(buffer[k] & 0xf);
- }
- else
- {
- *ptr++ = ' ';
- *ptr++ = ' ';
- }
- }
- *ptr++ = ' '; /* Plus 1 byte */
- /* Generate printable characters: Plus 1 * _NITEMS + 1 bytes */
- for (j = 0; j < _NITEMS; j++)
- {
- k = i + j;
- if (j == (_NITEMS / 2))
- {
- *ptr++ = ' ';
- }
- if (k < buflen)
- {
- if (buffer[k] >= 0x20 && buffer[k] < 0x7f)
- {
- *ptr++ = buffer[k];
- }
- else
- {
- *ptr++ = '.';
- }
- }
- }
- *ptr = '\0'; /* Plus 1 byte */
- syslog(LOG_INFO, "%04x: %s\n", i, buf);
- }
- }
|