Added MS/TP crc calculating demo application to use when writing articles that include example MS/TP code.
This commit is contained in:
skarg
@@ -0,0 +1,59 @@
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#Makefile to build BACnet Application for the Linux Port
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# tools - only if you need them.
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# Most platforms have this already defined
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# CC = gcc
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# Executable file name
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TARGET = mstpcrc
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TARGET_BIN = ${TARGET}$(TARGET_EXT)
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# This demo seems to be a little unique
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BACNET_INCLUDE_DIR = ../../include
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BACNET_SOURCE_DIR = ../../src
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#libraries used
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LIBRARIES=-lgcc,-lm
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#build for release (default) or debug
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DEBUGGING =
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OPTIMIZATION = -Os
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ifeq (${BUILD},debug)
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OPTIMIZATION = -O0
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DEBUGGING = -g
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endif
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# search order for included libraries
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INCLUDES = -I$(BACNET_INCLUDE_DIR)
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# any special defines
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DEFINES =
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# put all the flags together
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CFLAGS = -Wall $(DEBUGGING) $(OPTIMIZATION) $(INCLUDES) $(DEFINES)
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LFLAGS = -Wl,$(LIBRARIES)
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SRCS = main.c \
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${BACNET_SOURCE_DIR}/crc.c
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OBJS = ${SRCS:.c=.o}
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all: Makefile ${TARGET_BIN}
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${TARGET_BIN}: ${OBJS} Makefile
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${CC} ${PFLAGS} ${OBJS} ${LFLAGS} -o $@
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size $@
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cp $@ ../../bin
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.c.o:
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${CC} -c ${CFLAGS} $*.c -o $@
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depend:
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rm -f .depend
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${CC} -MM ${CFLAGS} *.c >> .depend
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clean:
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rm -f core ${TARGET_BIN} ${OBJS} $(TARGET).map
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include: .depend
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@@ -0,0 +1,9 @@
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@echo off
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echo Build with MinGW and MSYS: mingw.sourceforge.net
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rem set PATH=C:\MinGW\msys\1.0\bin;C:\MinGW\bin
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rem assumes rm, cp, size are already in path
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set CC=gcc
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set AR=ar
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set MAKE=make
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set TARGET_EXT=.exe
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make clean all
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@@ -0,0 +1,182 @@
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/*####COPYRIGHTBEGIN####
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-------------------------------------------
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Copyright (C) 2012 Steve Karg
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (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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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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The Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307
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USA.
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As a special exception, if other files instantiate templates or
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use macros or inline functions from this file, or you compile
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this file and link it with other works to produce a work based
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on this file, this file does not by itself cause the resulting
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work to be covered by the GNU General Public License. However
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the source code for this file must still be made available in
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accordance with section (3) of the GNU General Public License.
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This exception does not invalidate any other reasons why a work
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based on this file might be covered by the GNU General Public
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License.
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-------------------------------------------
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####COPYRIGHTEND####*/
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#include <stddef.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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/* local includes */
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#include "crc.h"
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#include "version.h"
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#ifndef max
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#define max(a,b) (((a) (b)) ? (a) : (b))
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#define min(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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/* buffer needed by CRC functions */
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static uint8_t CRC_Buffer[1512];
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static unsigned CRC_Buffer_Len = 0;
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/* flags needed for options */
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static bool ASCII_Decimal = false;
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static unsigned CRC_Size = 8;
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/******************************************************************
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* DESCRIPTION: Takes one of the arguments passed by the main function
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* and sets flags if it matches one of the predefined args.
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* PARAMETERS: argc (IN) number of arguments.
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* argv (IN) an array of arguments in string form.
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* RETURN: number of arguments parsed
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* NOTES: none
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******************************************************************/
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static void Parse_Arguments(int argc, char *argv[])
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{
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int i = 0;
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long long_value = 0;
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for (i=1;i<argc;i++) {
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if (argv[i][0] == '-') {
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/* numeric arguments */
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if (isdigit(argv[i][1])) {
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long_value = strtol(&argv[i][1], NULL, 10);
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/* dash arguments */
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switch(long_value) {
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case 8:
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CRC_Size = 8;
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break;
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case 16:
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CRC_Size = 16;
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break;
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case 32:
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CRC_Size = 32;
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break;
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default:
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break;
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}
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}
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/* dash arguments */
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switch(argv[i][1]) {
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case 'h':
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case 'H':
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ASCII_Decimal = false;
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break;
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case 'd':
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case 'D':
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ASCII_Decimal = true;
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break;
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default:
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break;
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}
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} else {
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/* should be number values here */
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if (ASCII_Decimal) {
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long_value = strtol(argv[i], NULL, 10);
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} else {
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long_value = strtol(argv[i], NULL, 16);
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}
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CRC_Buffer[CRC_Buffer_Len] = (uint8_t)long_value;
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CRC_Buffer_Len++;
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}
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}
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}
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/* simple program to CRC the data and print the CRC */
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int main(
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int argc,
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char *argv[])
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{
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/* accumulates the crc value */
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uint8_t crc8 = 0xff;
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uint16_t crc16 = 0xffff;
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unsigned i = 0;
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/* initialize our interface */
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if ((argc > 1) && (strcmp(argv[1], "--help") == 0)) {
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printf("mstpcrc [options] <00 00 00 00...>\r\n"
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"perform MS/TP CRC on data bytes.\r\n"
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"options:\r\n"
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"[-x] interprete the arguments as ascii hex (default)\r\n"
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"[-d] interprete the argument as ascii decimal\r\n"
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"[-8] calculate the MS/TP 8-bit Header CRC (default)\r\n"
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"[-16] calculate the MS/TP 16-bit Data CRC\r\n"
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"[-32] calculate the MS/TP 32-bit Extended Frame CRC\r\n");
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return 0;
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}
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if ((argc > 1) && (strcmp(argv[1], "--version") == 0)) {
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printf("mstpcap %s\r\n", BACNET_VERSION_TEXT);
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printf("Copyright (C) 2012 by Steve Karg\r\n"
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"This is free software; see the source for copying conditions.\r\n"
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"There is NO warranty; not even for MERCHANTABILITY or\r\n"
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"FITNESS FOR A PARTICULAR PURPOSE.\r\n");
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return 0;
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}
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Parse_Arguments(argc, argv);
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if (CRC_Buffer_Len) {
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for (i = 0; i < CRC_Buffer_Len; i++) {
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if (CRC_Size == 8) {
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crc8 = CRC_Calc_Header(CRC_Buffer[i], crc8);
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} else if (CRC_Size == 16) {
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crc16 = CRC_Calc_Data(CRC_Buffer[i], crc16);
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}
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if (ASCII_Decimal) {
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printf("%u\r\n", (unsigned)CRC_Buffer[i]);
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} else {
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printf("0x%02X\r\n", CRC_Buffer[i]);
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}
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}
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if (CRC_Size == 8) {
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crc8 = ~crc8;
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if (ASCII_Decimal) {
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printf("%u Header CRC\r\n", (unsigned)crc8);
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} else {
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printf("0x%02X Header CRC\r\n", crc8);
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}
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} else if (CRC_Size == 16) {
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crc16 = ~crc16;
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if (ASCII_Decimal) {
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printf("%u Data CRC\r\n", (unsigned)(crc16 & 0xFF));
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printf("%u Data CRC\r\n", (unsigned)(crc16 >> 8));
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} else {
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printf("0x%02X Data CRC\r\n", (crc16 & 0xFF));
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printf("0x%02X Data CRC\r\n", (crc16 >> 8));
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}
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}
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}
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return 1;
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}
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@@ -0,0 +1,139 @@
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#
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# Simple makefile to build an executable for Win32
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#
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# This makefile assumes Borland bcc32 development environment
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# on Windows NT/9x/2000/XP
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#
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!ifndef BORLAND_DIR
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BORLAND_DIR_Not_Defined:
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@echo .
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@echo You must define environment variable BORLAND_DIR to compile.
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!endif
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# target
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PRODUCT = mstpcrc
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PRODUCT_EXE = $(PRODUCT).exe
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# tools
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CC = $(BORLAND_DIR)\bin\bcc32
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MAKE=$(BORLAND_DIR)\bin\make.exe
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#LINK = $(BORLAND_DIR)\bin\tlink32
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LINK = $(BORLAND_DIR)\bin\ilink32
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BACNET_LIB_DIR = ..\..\lib
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BACNET_LIB = $(BACNET_LIB_DIR)\bacnet.lib
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# directories
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BACNET_PORT = ..\..\ports\win32
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BACNET_INCLUDE = ..\..\include
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BACNET_OBJECT = ..\object
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BACNET_HANDLER = ..\handler
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INCLUDES = \
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-I$(BACNET_INCLUDE) \
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-I$(BACNET_PORT) \
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-I$(BACNET_OBJECT) \
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-I$(BACNET_HANDLER) \
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-I$(BORLAND_DIR)\include
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#
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BACNET_DEFINES = -DPRINT_ENABLED=1 -DBACAPP_ALL
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#BACDL_DEFINE=-DBACDL_MSTP=1
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BACDL_DEFINE=-DBACDL_BIP=1 -DUSE_INADDR=1
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DEFINES = $(BACNET_DEFINES) $(BACDL_DEFINE)
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SRCS = main.c \
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OBJS = $(SRCS:.c=.obj)
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#
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# Compiler definitions
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#
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BCC_CFG = bcc32.cfg
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#
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# Include directories
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#
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CFLAGS = $(INCLUDES) $(DEFINES)
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#
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# Libraries
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#
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C_LIB_DIR = $(BORLAND_DIR)\lib
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LIBS = $(BACNET_LIB) \
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$(C_LIB_DIR)\IMPORT32.lib \
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$(C_LIB_DIR)\CW32MT.lib \
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#
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# Main target
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#
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# This should be the first one in the makefile
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all : $(BACNET_LIB) $(BCC_CFG) $(OBJS) $(PRODUCT_EXE)
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del $(BCC_CFG)
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install: $(PRODUCT_EXE)
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copy $(PRODUCT_EXE) ..\..\bin\$(PRODUCT_EXE)
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# Linker specific: the link below is for BCC linker/compiler. If you link
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# with a different linker - please change accordingly.
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#
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# need a temp response file (@&&| ... |) because command line is too long
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# $** lists each dependency
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# $< target name
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# $* target name without extension
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$(PRODUCT_EXE) : $(OBJS)
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@echo Running Linker for $(PRODUCT_EXE)
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$(LINK) -L$(C_LIB_DIR) -L$(BACNET_LIB_DIR) -m -c -s -v @&&|
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$(BORLAND_DIR)\lib\c0x32.obj $**
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$<
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$*.map
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$(LIBS)
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#
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# Utilities
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clean :
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del $(OBJS)
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del $(PRODUCT_EXE)
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del $(PRODUCT).map
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del $(PRODUCT).ilc
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del $(PRODUCT).ild
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del $(PRODUCT).ilf
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del $(PRODUCT).ils
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del $(PRODUCT).tds
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del $(BCC_CFG)
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#
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# Generic rules
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#
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.SUFFIXES: .cpp .c .sbr .obj
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#
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# cc generic rule
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#
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.c.obj:
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$(CC) +$(BCC_CFG) -o$@ $<
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# Compiler configuration file
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$(BCC_CFG) :
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Copy &&|
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$(CFLAGS)
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-c
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-y #include line numbers in OBJ's
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-v #include debug info
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-w+ #turn on all warnings
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-Od #disable all optimizations
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#-a4 #32 bit data alignment
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#-M # generate link map
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#-ls # linker options
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#-WM- #not multithread
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-WM #multithread
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-w-aus # ignore warning assigned a value that is never used
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-w-sig # ignore warning conversion may lose sig digits
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| $@
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# EOF: makefile
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@@ -0,0 +1,20 @@
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BACnet MS/TP CRC Calculator
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This tool receives MS/TP bytes and generates a CRC for those bytes
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mstpcrc [options] <00 00 00 00...>
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perform MS/TP CRC on data bytes.
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options:
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[-x] interprete the arguments as ascii hex (default)
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[-d] interprete the argument as ascii decimal
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[-8] calculate the MS/TP 8-bit Header CRC (default)
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[-16] calculate the MS/TP 16-bit Data CRC
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Here is a sample of the tool running (use CTRL-C to quit):
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D:\code\bacnet-stack\demo\mstpcrc>mstpcrc 06 ff 01 00 15
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0x06
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0xFF
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0x01
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0x00
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0x15
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0x8E Header CRC
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Reference in New Issue
Block a user