dali/bacnet_stack
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added demo/mstpcap application for capturing MS/TP data from a serial port and saving it to PCAP format to mstp.cap file.

Browse Source
This commit is contained in:
skarg
2008-07-30 19:58:16 +00:00
parent 96c140eda2
commit df89a0ec2c
4 changed files with 383 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
bacnet-stack/demo/mstpcap/Makefile
+60
View File
@@ -0,0 +1,60 @@
#Makefile to build BACnet Application for the Linux Port
# Compiler to use
CC = gcc
# Executable file name
TARGET = mstpcap
# Configure the BACnet Datalink Layer
BACDL_DEFINE = -DBACDL_MSTP
BACNET_DEFINES = -DPRINT_ENABLED=1 -DBACAPP_ALL -DBACFILE
DEFINES = $(BACNET_DEFINES) $(BACDL_DEFINE)
# Directories
BACNET_PORT = linux
BACNET_PORT_DIR = ../../ports/${BACNET_PORT}
BACNET_SOURCE_DIR = ../../src
BACNET_INCLUDE = ../../include
# Compiler Setup
INCLUDES = -I$(BACNET_INCLUDE) -I$(BACNET_PORT_DIR)
ifeq (${BACNET_PORT},linux)
PFLAGS = -pthread
TARGET_BIN = ${TARGET}
LIBRARIES=-lc,-lgcc,-lrt,-lm
endif
ifeq (${BACNET_PORT},win32)
TARGET_BIN = ${TARGET}.exe
LIBRARIES=-lws2_32,-lgcc,-lm,-liphlpapi
endif
DEBUGGING = -g
OPTIMIZATION = -O0
CFLAGS = -Wall $(DEBUGGING) $(OPTIMIZATION) $(INCLUDES) $(DEFINES) -fdata-sections -ffunction-sections
LFLAGS = -Wl,-Map=$(TARGET).map,$(LIBRARIES),--gc-sections
SRCS = main.c \
${BACNET_PORT_DIR}/rs485.c \
${BACNET_SOURCE_DIR}/mstp.c \
${BACNET_SOURCE_DIR}/mstptext.c \
${BACNET_SOURCE_DIR}/indtext.c \
${BACNET_SOURCE_DIR}/crc.c
OBJS = ${SRCS:.c=.o}
all: Makefile ${TARGET_BIN}
size ${TARGET_BIN}
${TARGET_BIN}: ${OBJS} Makefile
${CC} ${PFLAGS} ${OBJS} ${LFLAGS} -o $@
.c.o:
${CC} -c ${CFLAGS} $*.c -o $@
depend:
rm -f .depend
${CC} -MM ${CFLAGS} *.c >> .depend
clean:
rm -f core ${TARGET_BIN} ${OBJS}
include: .depend
bacnet-stack/demo/mstpcap/main.c
+320
View File
@@ -0,0 +1,320 @@
/*####COPYRIGHTBEGIN####
-------------------------------------------
Copyright (C) 2008 Steve Karg
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307
USA.
As a special exception, if other files instantiate templates or
use macros or inline functions from this file, or you compile
this file and link it with other works to produce a work based
on this file, this file does not by itself cause the resulting
work to be covered by the GNU General Public License. However
the source code for this file must still be made available in
accordance with section (3) of the GNU General Public License.
This exception does not invalidate any other reasons why a work
based on this file might be covered by the GNU General Public
License.
-------------------------------------------
####COPYRIGHTEND####*/
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
/* OS specific include*/
#include "net.h"
/* local includes */
#include "bytes.h"
#include "rs485.h"
#include "crc.h"
#include "mstp.h"
#include "mstptext.h"
/* local port data - shared with RS-485 */
static volatile struct mstp_port_struct_t MSTP_Port;
/* buffers needed by mstp port struct */
static uint8_t RxBuffer[MAX_MPDU];
static uint8_t TxBuffer[MAX_MPDU];
static uint16_t SilenceTime;
#define INCREMENT_AND_LIMIT_UINT16(x) {if (x < 0xFFFF) x++;}
static uint16_t Timer_Silence(
void)
{
return SilenceTime;
}
static void Timer_Silence_Reset(
void)
{
SilenceTime = 0;
}
static void dlmstp_millisecond_timer(
void)
{
INCREMENT_AND_LIMIT_UINT16(SilenceTime);
}
#if defined(_WIN32)
void *milliseconds_task(
void *pArg)
{
for (;;) {
Sleep(1);
dlmstp_millisecond_timer();
}
return NULL;
}
#else
void *milliseconds_task(
void *pArg)
{
struct timespec timeOut, remains;
timeOut.tv_sec = 0;
timeOut.tv_nsec = 10000000; /* 1 milliseconds */
for (;;) {
nanosleep(&timeOut, &remains);
dlmstp_millisecond_timer();
}
return NULL;
}
#endif
#if defined(_WIN32)
int gettimeofday(struct timeval *tp, void *tzp)
{
struct _timeb timebuffer;
_ftime(&timebuffer);
tp->tv_sec = timebuffer.time;
tp->tv_usec = timebuffer.millitm * 1000;
return 0;
}
#endif
/* functions used by the MS/TP state machine to put or get data */
uint16_t MSTP_Put_Receive(
volatile struct mstp_port_struct_t * mstp_port)
{
(void) mstp_port;
return 0;
}
/* for the MS/TP state machine to use for getting data to send */
/* Return: amount of PDU data */
uint16_t MSTP_Get_Send(
volatile struct mstp_port_struct_t * mstp_port,
unsigned timeout)
{ /* milliseconds to wait for a packet */
(void) mstp_port;
(void) timeout;
return 0;
}
uint16_t MSTP_Get_Reply(
volatile struct mstp_port_struct_t * mstp_port,
unsigned timeout)
{ /* milliseconds to wait for a packet */
(void) mstp_port;
(void) timeout;
return 0;
}
static const char *Capture_Filename = "mstp.cap";
static FILE *pFile = NULL; /* stream pointer */
/* write packet to file in libpcap format */
static void write_global_header(void)
{
uint32_t magic_number = 0xa1b2c3d4; /* magic number */
uint16_t version_major = 2; /* major version number */
uint16_t version_minor = 4; /* minor version number */
int32_t thiszone = 0; /* GMT to local correction */
uint32_t sigfigs = 0; /* accuracy of timestamps */
uint32_t snaplen = 65535; /* max length of captured packets, in octets */
uint32_t network = 165; /* data link type - BACNET_MS_TP */
/* create a new file. */
pFile = fopen(Capture_Filename, "wb");
if (pFile) {
fwrite(&magic_number,sizeof(magic_number),1,pFile);
fwrite(&version_major,sizeof(version_major),1,pFile);
fwrite(&version_minor,sizeof(version_minor),1,pFile);
fwrite(&thiszone,sizeof(thiszone),1,pFile);
fwrite(&sigfigs,sizeof(sigfigs),1,pFile);
fwrite(&snaplen,sizeof(snaplen),1,pFile);
fwrite(&network,sizeof(network),1,pFile);
fflush(pFile);
fprintf(stdout,"mstpcap: saving capture to %s\n",
Capture_Filename);
} else {
fprintf(stderr,"rx_fsm: failed to open %s: %s\n",
Capture_Filename, strerror(errno));
}
}
static void write_received_packet(
volatile struct mstp_port_struct_t *mstp_port)
{
uint32_t ts_sec; /* timestamp seconds */
uint32_t ts_usec; /* timestamp microseconds */
uint32_t incl_len; /* number of octets of packet saved in file */
uint32_t orig_len; /* actual length of packet */
uint8_t header[8]; /* MS/TP header */
struct timeval tv;
if (pFile) {
gettimeofday(&tv, NULL);
ts_sec = tv.tv_sec;
ts_usec = tv.tv_usec;
fwrite(&ts_sec,sizeof(ts_sec),1,pFile);
fwrite(&ts_usec,sizeof(ts_usec),1,pFile);
if (mstp_port->DataLength) {
incl_len = orig_len = 8 + mstp_port->DataLength + 2;
} else {
incl_len = orig_len = 8;
}
fwrite(&incl_len,sizeof(incl_len),1,pFile);
fwrite(&orig_len,sizeof(orig_len),1,pFile);
header[0] = 0x55;
header[1] = 0xFF;
header[2] = mstp_port->FrameType;
header[3] = mstp_port->DestinationAddress;
header[4] = mstp_port->SourceAddress;
header[5] = HI_BYTE(mstp_port->DataLength);
header[6] = LO_BYTE(mstp_port->DataLength);
header[7] = mstp_port->HeaderCRCActual;
fwrite(header,sizeof(header),1,pFile);
if (mstp_port->DataLength) {
fwrite(mstp_port->InputBuffer,mstp_port->DataLength,1,pFile);
fwrite(&(mstp_port->DataCRCActualMSB),1,1,pFile);
fwrite(&(mstp_port->DataCRCActualLSB),1,1,pFile);
}
} else {
fprintf(stderr,"rx_fsm: failed to open %s: %s\n",
Capture_Filename, strerror(errno));
}
}
static void cleanup(void)
{
if (pFile) {
fflush(pFile); /* stream pointer */
fclose(pFile); /* stream pointer */
}
pFile = NULL;
}
#if (!defined(_WIN32))
static void sig_int(int signo)
{
(void)signo;
cleanup();
exit(0);
}
void signal_init(void)
{
signal(SIGINT, sig_int);
signal(SIGHUP, sig_int);
signal(SIGTERM, sig_int);
}
#endif
/* simple test to packetize the data and print it */
int main(
int argc,
char *argv[])
{
volatile struct mstp_port_struct_t *mstp_port;
int my_mac = 127;
long my_baud = 38400;
#if defined(_WIN32)
unsigned long hThread = 0;
uint32_t arg_value = 0;
#else
int rc = 0;
pthread_t hThread;
#endif
/* mimic our pointer in the state machine */
mstp_port = &MSTP_Port;
/* initialize our interface */
if (argc > 1) {
RS485_Set_Interface(argv[1]);
}
if (argc > 2) {
my_baud = strtol(argv[2], NULL, 0);
}
if (argc > 3) {
my_mac = strtol(argv[3], NULL, 0);
if (my_mac > 127)
my_mac = 127;
}
RS485_Set_Baud_Rate(my_baud);
RS485_Initialize();
MSTP_Port.InputBuffer = &RxBuffer[0];
MSTP_Port.InputBufferSize = sizeof(RxBuffer);
MSTP_Port.OutputBuffer = &TxBuffer[0];
MSTP_Port.OutputBufferSize = sizeof(TxBuffer);
MSTP_Port.This_Station = my_mac;
MSTP_Port.Nmax_info_frames = 1;
MSTP_Port.Nmax_master = 127;
MSTP_Port.SilenceTimer = Timer_Silence;
MSTP_Port.SilenceTimerReset = Timer_Silence_Reset;
MSTP_Init(mstp_port);
mstp_port->Lurking = true;
#if defined(_WIN32)
hThread = _beginthread(milliseconds_task, 4096, &arg_value);
if (hThread == 0) {
fprintf(stderr, "Failed to start timer task\n");
}
(void) SetThreadPriority(GetCurrentThread(),
THREAD_PRIORITY_TIME_CRITICAL);
#else
/* start our MilliSec task */
rc = pthread_create(&hThread, NULL, milliseconds_task, NULL);
signal_init();
#endif
atexit(cleanup);
write_global_header();
/* run forever */
for (;;) {
RS485_Check_UART_Data(mstp_port);
MSTP_Receive_Frame_FSM(mstp_port);
/* process the data portion of the frame */
if (mstp_port->ReceivedValidFrame) {
mstp_port->ReceivedValidFrame = false;
write_received_packet(mstp_port);
} else if (mstp_port->ReceivedInvalidFrame) {
mstp_port->ReceivedInvalidFrame = false;
fprintf(stderr, "ReceivedInvalidFrame\n");
write_received_packet(mstp_port);
}
}
return 0;
}