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hex conversion and crc shell commands

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This commit is contained in:
Fredrik Osterlind 2011-12-21 10:54:39 +01:00
parent 2644057fb2
commit abc4cee94d
3 changed files with 338 additions and 1 deletions
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2
apps/shell/Makefile.shell
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@ -11,7 +11,7 @@ shell_src = shell.c shell-reboot.c \
shell-rime-unicast.c \
shell-tweet.c shell-base64.c \
shell-netperf.c shell-memdebug.c \
shell-powertrace.c shell-collect-view.c
shell-powertrace.c shell-collect-view.c shell-crc.c
shell_dsc = shell-dsc.c
APPS += webserver

298
apps/shell/shell-crc.c Normal file
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@ -0,0 +1,298 @@
/*
* Copyright (c) 2011, Swedish Institute of Computer Science.
* All rights reserved.
*
* 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 of the Institute 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 INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*
* $Id: shell-text.c,v 1.7 2010/09/13 13:29:47 adamdunkels Exp $
*/
/**
* \file
* Block-wise hexadecimal conversion and CRC commands
* \author
* Fredrik Osterlind <fros@sics.se>
*/
#include "contiki.h"
#include "shell.h"
#include "lib/crc16.h"
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
/*---------------------------------------------------------------------------*/
PROCESS(shell_bin2hex_process, "bin2hex");
SHELL_COMMAND(bin2hex_command,
"bin2hex",
"bin2hex: binary to hexadecimal",
&shell_bin2hex_process);
PROCESS(shell_hex2bin_process, "hex2bin");
SHELL_COMMAND(hex2bin_command,
"hex2bin",
"hex2bin: hexadecimal to binary",
&shell_hex2bin_process);
PROCESS(shell_crc_process, "crc");
SHELL_COMMAND(crc_command,
"crc",
"crc: append per-block crc",
&shell_crc_process);
PROCESS(shell_crcvalidate_process, "crc-v");
SHELL_COMMAND(crcvalidate_command,
"crc-v",
"crc-v: verify crc and output if valid",
&shell_crcvalidate_process);
/*---------------------------------------------------------------------------*/
static unsigned char
fromhexchar(unsigned char c)
{
unsigned char h;
if(c >= '0' && c <= '9') {
h = c-'0';
} else if(c >= 'a' && c <= 'f') {
h = c-'a'+10;
} else if(c >= 'A' && c <= 'F') {
h = c-'A'+10;
} else {
PRINTF("Bad hex input: %c", c);
h = 0;
}
return h;
}
/*---------------------------------------------------------------------------*/
static unsigned char
fromhex(unsigned char c1, unsigned char c2)
{
return (fromhexchar(c1)<<4) + fromhexchar(c2);
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_bin2hex_process, ev, data)
{
struct shell_input *input;
int i;
char *bufptr;
char *buf;
PROCESS_BEGIN();
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
input = data;
if(input->len1 + input->len2 == 0) {
PROCESS_EXIT();
}
buf = alloca((input->len1 + input->len2)*2);
bufptr = buf;
for(i = 0; i < input->len1; i++) {
bufptr += sprintf(bufptr, "%02x", 0xff&((char*)input->data1)[i]);
}
for(i = 0; i < input->len2; i++) {
bufptr += sprintf(bufptr, "%02x", 0xff&((char*)input->data2)[i]);
}
shell_output(
&bin2hex_command,
buf, ((input->len1 + input->len2)*2), "", 0);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_hex2bin_process, ev, data)
{
struct shell_input *input;
int i, cnt;
char* buf;
PROCESS_BEGIN();
/* Reads data in hexadecimal format and prints in binary */
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
input = data;
if(input->len1 + input->len2 == 0) {
PROCESS_EXIT();
}
if(input->len1 % 2 != 0) {
PRINTF("Bad input length 1: %d\n", input->len1);
continue;
}
if(input->len2 % 2 != 0) {
PRINTF("Bad input length 2: %d\n", input->len2);
continue;
}
buf = alloca((input->len1 + input->len2)/2+1);
cnt = 0;
for(i = 0; i < input->len1; i += 2) {
buf[cnt++] = fromhex(
((char*)input->data1)[i],
((char*)input->data1)[i+1]);
}
for(i = 0; i < input->len2; i += 2) {
buf[cnt++] = fromhex(
((char*)input->data2)[i],
((char*)input->data2)[i+1]);
}
shell_output(&hex2bin_command, buf, cnt, "", 0);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_crc_process, ev, data)
{
struct shell_input *input;
int i;
uint16_t crc;
char *buf;
PROCESS_BEGIN();
/* Append per-block 16-bit CRC */
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
input = data;
if(input->len1 + input->len2 == 0) {
PROCESS_EXIT();
}
/* calculate crc */
crc = 0;
for(i = 0; i < input->len1; i++) {
crc = crc16_add(((char*)(input->data1))[i], crc);
}
for(i = 0; i < input->len2; i++) {
crc = crc16_add(((char*)(input->data2))[i], crc);
}
/* input + 16-bit CRC */
buf = alloca(input->len2+2);
memcpy(buf, input->data2, input->len2);
buf[input->len2] = crc&0xff;
buf[input->len2+1] = (crc>>8)&0xff;
shell_output(&crc_command, input->data1, input->len1, buf, input->len2+2);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_crcvalidate_process, ev, data)
{
struct shell_input *input;
int i;
char crc1, crc2;
uint16_t crc, crc_footer;
PROCESS_BEGIN();
/* Per-block 16-bit CRC verification:
* outputs data without CRCs matches, otherwise nothing */
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
input = data;
if(input->len1 + input->len2 == 0) {
PROCESS_EXIT();
}
if(input->len1 + input->len2 < 2) {
/* too short - no output */
PRINTF("Too short input: %d+%d\n", input->len1, input->len2);
continue;
}
if(input->len2 == 1) {
crc1 = ((char*)input->data1)[input->len1-1];
crc2 = ((char*)input->data2)[input->len2-1];
input->len1 -= 1;
input->len2 -= 1;
} else if(input->len2 >= 2) {
crc1 = ((char*)input->data2)[input->len2-2];
crc2 = ((char*)input->data2)[input->len2-1];
input->len2 -= 2;
} else {
crc1 = ((char*)input->data1)[input->len1-2];
crc2 = ((char*)input->data1)[input->len1-1];
input->len1 -= 2;
}
/* recalculate crc */
crc = 0;
for(i = 0; i < input->len1; i++) {
crc = crc16_add(((char*)(input->data1))[i], crc);
}
for(i = 0; i < input->len2; i++) {
crc = crc16_add(((char*)(input->data2))[i], crc);
}
/* compare with input crc */
crc_footer = ((0xff&crc2)<<8) | (0xff&crc1);
/* output if matching crcs */
if(crc_footer == crc) {
shell_output(
&crcvalidate_command,
input->data1, input->len1, input->data2, input->len2);
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
void
shell_crc_init(void)
{
shell_register_command(&bin2hex_command);
shell_register_command(&hex2bin_command);
shell_register_command(&crc_command);
shell_register_command(&crcvalidate_command);
}
/*---------------------------------------------------------------------------*/

39
apps/shell/shell-crc.h Normal file
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@ -0,0 +1,39 @@
/*
* Copyright (c) 2011, Swedish Institute of Computer Science.
* All rights reserved.
*
* 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 of the Institute 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 INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*/
#ifndef __SHELL_CRC_H__
#define __SHELL_CRC_H__
#include "shell.h"
void shell_crc_init(void);
#endif /* __SHELL_CRC_H__ */