/* Transmits a Frame on the wire */
void RS485_Send_Frame(
volatile struct mstp_port_struct_t *mstp_port, /* port specific data */
uint8_t * buffer, /* frame to send (up to 501 bytes of data) */
uint16_t nbytes)
{ /* number of bytes of data (up to 501) */
DWORD dwWritten = 0;
if (mstp_port) {
uint32_t baud;
uint8_t turnaround_time;
baud = RS485_Get_Baud_Rate();
/* wait about 40 bit times since reception */
if (baud == 9600)
turnaround_time = 4;
else if (baud == 19200)
turnaround_time = 2;
else
turnaround_time = 1;
while (mstp_port->SilenceTimer() < turnaround_time) {
/* do nothing - wait for timer to increment */
};
}
WriteFile(RS485_Handle, buffer, nbytes, &dwWritten, NULL);
/* per MSTP spec, reset SilenceTimer after each byte is sent */
if (mstp_port) {
mstp_port->SilenceTimerReset();
}
return;
}
/* return the length of the apdu encoded or -1 for error */
int Device_Encode_Property_APDU(
uint8_t * apdu,
uint32_t object_instance,
BACNET_PROPERTY_ID property,
int32_t array_index,
BACNET_ERROR_CLASS * error_class,
BACNET_ERROR_CODE * error_code)
{
int apdu_len = 0; /* return value */
int len = 0; /* apdu len intermediate value */
BACNET_BIT_STRING bit_string;
BACNET_CHARACTER_STRING char_string;
unsigned i = 0;
int object_type = 0;
uint32_t instance = 0;
unsigned count = 0;
object_instance = object_instance;
/* FIXME: change the hardcoded names to suit your application */
switch (property) {
case PROP_OBJECT_IDENTIFIER:
apdu_len =
encode_application_object_id(&apdu[0], OBJECT_DEVICE,
Object_Instance_Number);
break;
case PROP_OBJECT_NAME:
characterstring_init_ansi(&char_string, Object_Name);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_OBJECT_TYPE:
apdu_len = encode_application_enumerated(&apdu[0], OBJECT_DEVICE);
break;
case PROP_SYSTEM_STATUS:
apdu_len = encode_application_enumerated(&apdu[0], System_Status);
break;
case PROP_VENDOR_NAME:
characterstring_init_ansi(&char_string, BACNET_VENDOR_NAME);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_VENDOR_IDENTIFIER:
apdu_len =
encode_application_unsigned(&apdu[0],
Device_Vendor_Identifier());
break;
case PROP_MODEL_NAME:
characterstring_init_ansi(&char_string, "GNU Demo");
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_FIRMWARE_REVISION:
characterstring_init_ansi(&char_string, BACNET_VERSION_TEXT);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_APPLICATION_SOFTWARE_VERSION:
characterstring_init_ansi(&char_string, "1.0");
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_PROTOCOL_VERSION:
apdu_len = encode_application_unsigned(&apdu[0], 1);
break;
case PROP_PROTOCOL_REVISION:
apdu_len = encode_application_unsigned(&apdu[0], 5);
break;
case PROP_PROTOCOL_SERVICES_SUPPORTED:
/* Note: list of services that are executed, not initiated. */
bitstring_init(&bit_string);
for (i = 0; i < MAX_BACNET_SERVICES_SUPPORTED; i++) {
/* automatic lookup based on handlers set */
bitstring_set_bit(&bit_string, (uint8_t) i,
apdu_service_supported((BACNET_SERVICES_SUPPORTED) i));
}
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_PROTOCOL_OBJECT_TYPES_SUPPORTED:
/* Note: this is the list of objects that can be in this device,
not a list of objects that this device can access */
bitstring_init(&bit_string);
/* must have the bit string as big as it can be */
for (i = 0; i < MAX_ASHRAE_OBJECT_TYPE; i++) {
/* initialize all the object types to not-supported */
bitstring_set_bit(&bit_string, (uint8_t) i, false);
}
/* FIXME: indicate the objects that YOU support */
bitstring_set_bit(&bit_string, OBJECT_DEVICE, true);
bitstring_set_bit(&bit_string, OBJECT_ANALOG_VALUE, true);
bitstring_set_bit(&bit_string, OBJECT_BINARY_VALUE, true);
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_OBJECT_LIST:
count = Device_Object_List_Count();
/* Array element zero is the number of objects in the list */
if (array_index == 0)
apdu_len = encode_application_unsigned(&apdu[0], count);
/* if no index was specified, then try to encode the entire list */
/* into one packet. Note that more than likely you will have */
/* to return an error if the number of encoded objects exceeds */
/* your maximum APDU size. */
else if (array_index == BACNET_ARRAY_ALL) {
for (i = 1; i <= count; i++) {
Device_Object_List_Identifier(i, &object_type, &instance);
len =
encode_application_object_id(&apdu[apdu_len],
object_type, instance);
apdu_len += len;
/* assume next one is the same size as this one */
/* can we all fit into the APDU? */
if ((apdu_len + len) >= MAX_APDU) {
*error_class = ERROR_CLASS_SERVICES;
*error_code = ERROR_CODE_NO_SPACE_FOR_OBJECT;
apdu_len = -1;
break;
}
}
} else {
if (Device_Object_List_Identifier(array_index, &object_type,
&instance))
apdu_len =
encode_application_object_id(&apdu[0], object_type,
instance);
else {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
apdu_len = -1;
}
}
break;
case PROP_MAX_APDU_LENGTH_ACCEPTED:
apdu_len = encode_application_unsigned(&apdu[0], MAX_APDU);
break;
case PROP_SEGMENTATION_SUPPORTED:
apdu_len =
encode_application_enumerated(&apdu[0], SEGMENTATION_NONE);
break;
case PROP_APDU_TIMEOUT:
apdu_len = encode_application_unsigned(&apdu[0], 60000);
break;
case PROP_NUMBER_OF_APDU_RETRIES:
apdu_len = encode_application_unsigned(&apdu[0], 0);
break;
case PROP_DEVICE_ADDRESS_BINDING:
/* FIXME: encode the list here, if it exists */
break;
case PROP_DATABASE_REVISION:
apdu_len = encode_application_unsigned(&apdu[0], 0);
break;
case PROP_MAX_INFO_FRAMES:
apdu_len =
encode_application_unsigned(&apdu[0],
dlmstp_max_info_frames());
break;
case PROP_MAX_MASTER:
apdu_len =
encode_application_unsigned(&apdu[0], dlmstp_max_master());
break;
case 9600:
apdu_len =
encode_application_unsigned(&apdu[0], RS485_Get_Baud_Rate());
break;
case 512:
apdu_len = encode_application_unsigned(&apdu[0], stack_size());
break;
case 513:
apdu_len = encode_application_unsigned(&apdu[0], stack_unused());
break;
default:
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_UNKNOWN_PROPERTY;
apdu_len = -1;
break;
}
return apdu_len;
}
/* return the length of the apdu encoded or BACNET_STATUS_ERROR for error */
int Device_Read_Property_Local(
BACNET_READ_PROPERTY_DATA * rpdata)
{
int apdu_len = 0; /* return value */
int len = 0; /* apdu len intermediate value */
BACNET_BIT_STRING bit_string;
BACNET_CHARACTER_STRING char_string;
unsigned i = 0;
int object_type = 0;
uint32_t instance = 0;
unsigned count = 0;
uint8_t *apdu = NULL;
struct my_object_functions *pObject = NULL;
if ((rpdata->application_data == NULL) ||
(rpdata->application_data_len == 0)) {
return 0;
}
apdu = rpdata->application_data;
switch ((int) rpdata->object_property) {
case PROP_DESCRIPTION:
characterstring_init_ansi(&char_string, "BACnet Demo");
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_LOCATION:
characterstring_init_ansi(&char_string, "USA");
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_SYSTEM_STATUS:
apdu_len =
encode_application_enumerated(&apdu[0],
Device_System_Status());
break;
case PROP_VENDOR_NAME:
characterstring_init_ansi(&char_string, BACNET_VENDOR_NAME);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_VENDOR_IDENTIFIER:
apdu_len = encode_application_unsigned(&apdu[0], BACNET_VENDOR_ID);
break;
case PROP_MODEL_NAME:
characterstring_init_ansi(&char_string, "GNU Demo");
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_FIRMWARE_REVISION:
characterstring_init_ansi(&char_string, BACnet_Version);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_APPLICATION_SOFTWARE_VERSION:
characterstring_init_ansi(&char_string, "1.0");
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_PROTOCOL_VERSION:
apdu_len =
encode_application_unsigned(&apdu[0], BACNET_PROTOCOL_VERSION);
break;
case PROP_PROTOCOL_REVISION:
apdu_len =
encode_application_unsigned(&apdu[0],
BACNET_PROTOCOL_REVISION);
break;
case PROP_PROTOCOL_SERVICES_SUPPORTED:
/* Note: list of services that are executed, not initiated. */
bitstring_init(&bit_string);
for (i = 0; i < MAX_BACNET_SERVICES_SUPPORTED; i++) {
/* automatic lookup based on handlers set */
bitstring_set_bit(&bit_string, (uint8_t) i,
apdu_service_supported((BACNET_SERVICES_SUPPORTED) i));
}
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_PROTOCOL_OBJECT_TYPES_SUPPORTED:
/* Note: this is the list of objects that can be in this device,
not a list of objects that this device can access */
bitstring_init(&bit_string);
for (i = 0; i < MAX_ASHRAE_OBJECT_TYPE; i++) {
/* initialize all the object types to not-supported */
bitstring_set_bit(&bit_string, (uint8_t) i, false);
}
/* set the object types with objects to supported */
i = 0;
pObject = &Object_Table[i];
while (pObject->Object_Type < MAX_BACNET_OBJECT_TYPE) {
if ((pObject->Object_Count) && (pObject->Object_Count() > 0)) {
bitstring_set_bit(&bit_string, pObject->Object_Type, true);
}
pObject++;
}
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_OBJECT_LIST:
count = Device_Object_List_Count();
/* Array element zero is the number of objects in the list */
if (rpdata->array_index == 0)
apdu_len = encode_application_unsigned(&apdu[0], count);
/* if no index was specified, then try to encode the entire list */
/* into one packet. Note that more than likely you will have */
/* to return an error if the number of encoded objects exceeds */
/* your maximum APDU size. */
else if (rpdata->array_index == BACNET_ARRAY_ALL) {
for (i = 1; i <= count; i++) {
if (Device_Object_List_Identifier(i, &object_type,
&instance)) {
len =
encode_application_object_id(&apdu[apdu_len],
object_type, instance);
apdu_len += len;
/* assume next one is the same size as this one */
/* can we all fit into the APDU? */
if ((apdu_len + len) >= MAX_APDU) {
/* Abort response */
rpdata->error_code =
ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
apdu_len = BACNET_STATUS_ABORT;
break;
}
} else {
/* error: internal error? */
rpdata->error_class = ERROR_CLASS_SERVICES;
rpdata->error_code = ERROR_CODE_OTHER;
apdu_len = BACNET_STATUS_ERROR;
break;
}
}
} else {
if (Device_Object_List_Identifier(rpdata->array_index,
&object_type, &instance))
apdu_len =
encode_application_object_id(&apdu[0], object_type,
instance);
else {
rpdata->error_class = ERROR_CLASS_PROPERTY;
rpdata->error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
apdu_len = BACNET_STATUS_ERROR;
}
}
break;
case PROP_MAX_APDU_LENGTH_ACCEPTED:
apdu_len = encode_application_unsigned(&apdu[0], MAX_APDU);
break;
case PROP_SEGMENTATION_SUPPORTED:
apdu_len =
encode_application_enumerated(&apdu[0],
Device_Segmentation_Supported());
break;
case PROP_APDU_TIMEOUT:
apdu_len = encode_application_unsigned(&apdu[0], apdu_timeout());
break;
case PROP_NUMBER_OF_APDU_RETRIES:
apdu_len = encode_application_unsigned(&apdu[0], apdu_retries());
break;
case PROP_DEVICE_ADDRESS_BINDING:
/* FIXME: encode the list here, if it exists */
break;
case PROP_DATABASE_REVISION:
apdu_len =
encode_application_unsigned(&apdu[0],
Device_Database_Revision());
break;
case PROP_MAX_INFO_FRAMES:
apdu_len =
encode_application_unsigned(&apdu[0],
dlmstp_max_info_frames());
break;
case PROP_MAX_MASTER:
apdu_len =
encode_application_unsigned(&apdu[0], dlmstp_max_master());
break;
case 9600:
apdu_len =
encode_application_unsigned(&apdu[0], RS485_Get_Baud_Rate());
break;
default:
rpdata->error_class = ERROR_CLASS_PROPERTY;
rpdata->error_code = ERROR_CODE_UNKNOWN_PROPERTY;
apdu_len = BACNET_STATUS_ERROR;
break;
}
/* only array properties can have array options */
if ((apdu_len >= 0) && (rpdata->object_property != PROP_OBJECT_LIST) &&
(rpdata->array_index != BACNET_ARRAY_ALL)) {
rpdata->error_class = ERROR_CLASS_PROPERTY;
rpdata->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;
apdu_len = BACNET_STATUS_ERROR;
}
return apdu_len;
}
/* simple test to packetize the data and print it */
int main(
int argc,
char *argv[])
{
volatile struct mstp_port_struct_t *mstp_port;
long my_baud = 38400;
uint32_t packet_count = 0;
MSTP_Port.InputBuffer = &RxBuffer[0];
MSTP_Port.InputBufferSize = sizeof(RxBuffer);
MSTP_Port.OutputBuffer = &TxBuffer[0];
MSTP_Port.OutputBufferSize = sizeof(TxBuffer);
MSTP_Port.This_Station = 127;
MSTP_Port.Nmax_info_frames = 1;
MSTP_Port.Nmax_master = 127;
MSTP_Port.SilenceTimer = Timer_Silence;
MSTP_Port.SilenceTimerReset = Timer_Silence_Reset;
/* mimic our pointer in the state machine */
mstp_port = &MSTP_Port;
MSTP_Init(mstp_port);
packet_statistics_clear();
/* initialize our interface */
if ((argc > 1) && (strcmp(argv[1], "--help") == 0)) {
printf("mstpcap --scan <filename>\r\n"
"perform statistic analysis on MS/TP capture file.\r\n");
printf("\r\n");
printf("mstpcap [interface] [baud] [named pipe]\r\n"
"Captures MS/TP packets from a serial interface\r\n"
"and save them to a file. Saves packets in a\r\n"
"filename mstp_20090123091200.cap that has data and time.\r\n"
"After receiving 65535 packets, a new file is created.\r\n" "\r\n"
"Command line options:\r\n" "[interface] - serial interface.\r\n"
" defaults to COM4 on Windows, and /dev/ttyUSB0 on linux.\r\n"
"[baud] - baud rate. 9600, 19200, 38400, 57600, 115200\r\n"
" defaults to 38400.\r\n"
"[named pipe] - use \\\\.\\pipe\\wireshark as the name\r\n"
" and set that name as the interface name in Wireshark\r\n");
return 0;
}
if ((argc > 1) && (strcmp(argv[1], "--version") == 0)) {
printf("mstpcap %s\r\n", BACNET_VERSION_TEXT);
printf("Copyright (C) 2011 by Steve Karg\r\n"
"This is free software; see the source for copying conditions.\r\n"
"There is NO warranty; not even for MERCHANTABILITY or\r\n"
"FITNESS FOR A PARTICULAR PURPOSE.\r\n");
return 0;
}
if ((argc > 1) && (strcmp(argv[1], "--scan") == 0)) {
if (argc > 2) {
printf("Scanning %s\r\n", argv[2]);
/* perform statistics on the file */
if (test_global_header(argv[2])) {
while (read_received_packet(mstp_port)) {
packet_count++;
fprintf(stderr, "\r%u packets", (unsigned) packet_count);
}
if (packet_count) {
packet_statistics_print();
}
} else {
fprintf(stderr, "File header does not match.\n");
}
return 1;
}
}
if (argc > 1) {
RS485_Set_Interface(argv[1]);
} else {
#if defined(_WIN32)
print_com_ports();
return 0;
#endif
}
if (argc > 2) {
my_baud = strtol(argv[2], NULL, 0);
RS485_Set_Baud_Rate(my_baud);
}
atexit(cleanup);
RS485_Initialize();
timer_init();
fprintf(stdout, "mstpcap: Using %s for capture at %ld bps.\n",
RS485_Interface(), (long) RS485_Get_Baud_Rate());
#if defined(_WIN32)
SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_PROCESSED_INPUT);
SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlCHandler, TRUE);
#else
signal_init();
#endif
if (argc > 3) {
named_pipe_create(argv[3]);
}
filename_create_new();
/* 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) {
write_received_packet(mstp_port);
mstp_port->ReceivedValidFrame = false;
packet_count++;
} else if (mstp_port->ReceivedValidFrameNotForUs) {
write_received_packet(mstp_port);
mstp_port->ReceivedValidFrameNotForUs = false;
packet_count++;
} else if (mstp_port->ReceivedInvalidFrame) {
write_received_packet(mstp_port);
Invalid_Frame_Count++;
mstp_port->ReceivedInvalidFrame = false;
packet_count++;
}
if (!(packet_count % 100)) {
fprintf(stdout, "\r%hu packets, %hu invalid frames", packet_count,
Invalid_Frame_Count);
}
if (packet_count >= 65535) {
packet_statistics_print();
packet_statistics_clear();
filename_create_new();
packet_count = 0;
}
}
}
/* simple test to packetize the data and print it */
int main(
int argc,
char *argv[])
{
volatile struct mstp_port_struct_t *mstp_port;
long my_baud = 38400;
uint32_t packet_count = 0;
#if defined(_WIN32)
unsigned long hThread = 0;
uint32_t arg_value = 0;
#else
int rc = 0;
pthread_t hThread;
#endif
int sockfd = -1;
char *my_interface = "eth0";
/* mimic our pointer in the state machine */
mstp_port = &MSTP_Port;
if ((argc > 1) && (strcmp(argv[1], "--help") == 0)) {
printf("mstsnap [serial] [baud] [network]\r\n"
"Captures MS/TP packets from a serial interface\r\n"
"and sends them to a network interface using SNAP \r\n"
"protocol packets (mimics Cimetrics U+4 packet).\r\n" "\r\n"
"Command line options:\r\n" "[serial] - serial interface.\r\n"
" defaults to /dev/ttyUSB0.\r\n"
"[baud] - baud rate. 9600, 19200, 38400, 57600, 115200\r\n"
" defaults to 38400.\r\n" "[network] - network interface.\r\n"
" defaults to eth0.\r\n" "");
return 0;
}
/* 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_interface = argv[3];
}
sockfd = network_init(my_interface, ETH_P_ALL);
if (sockfd == -1) {
return 1;
}
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 = 127;
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;
fprintf(stdout, "mstpcap: Using %s for capture at %ld bps.\n",
RS485_Interface(), (long) RS485_Get_Baud_Rate());
#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);
/* 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;
snap_received_packet(mstp_port, sockfd);
packet_count++;
} else if (mstp_port->ReceivedInvalidFrame) {
mstp_port->ReceivedInvalidFrame = false;
fprintf(stderr, "ReceivedInvalidFrame\n");
snap_received_packet(mstp_port, sockfd);
packet_count++;
}
if (!(packet_count % 100)) {
fprintf(stdout, "\r%hu packets", packet_count);
}
}
return 0;
}
/* simple test to packetize the data and print it */
int main(
int argc,
char *argv[])
{
volatile struct mstp_port_struct_t *mstp_port;
long my_baud = 38400;
uint32_t packet_count = 0;
int sockfd = -1;
char *my_interface = "eth0";
/* mimic our pointer in the state machine */
mstp_port = &MSTP_Port;
if ((argc > 1) && (strcmp(argv[1], "--help") == 0)) {
printf("mstsnap [serial] [baud] [network]\r\n"
"Captures MS/TP packets from a serial interface\r\n"
"and sends them to a network interface using SNAP \r\n"
"protocol packets (mimics Cimetrics U+4 packet).\r\n" "\r\n"
"Command line options:\r\n" "[serial] - serial interface.\r\n"
" defaults to /dev/ttyUSB0.\r\n"
"[baud] - baud rate. 9600, 19200, 38400, 57600, 115200\r\n"
" defaults to 38400.\r\n" "[network] - network interface.\r\n"
" defaults to eth0.\r\n" "");
return 0;
}
/* 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_interface = argv[3];
}
sockfd = network_init(my_interface, ETH_P_ALL);
if (sockfd == -1) {
return 1;
}
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 = 127;
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);
fprintf(stdout, "mstpcap: Using %s for capture at %ld bps.\n",
RS485_Interface(), (long) RS485_Get_Baud_Rate());
atexit(cleanup);
#if defined(_WIN32)
SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_PROCESSED_INPUT);
SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlCHandler, TRUE);
#else
signal_init();
#endif
/* 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;
snap_received_packet(mstp_port, sockfd);
packet_count++;
} else if (mstp_port->ReceivedInvalidFrame) {
mstp_port->ReceivedInvalidFrame = false;
fprintf(stderr, "ReceivedInvalidFrame\n");
snap_received_packet(mstp_port, sockfd);
packet_count++;
}
if (!(packet_count % 100)) {
fprintf(stdout, "\r%hu packets", packet_count);
}
}
return 0;
}
/* simple test to packetize the data and print it */
int main(
int argc,
char *argv[])
{
volatile struct mstp_port_struct_t *mstp_port;
long my_baud = 38400;
uint32_t packet_count = 0;
int argi = 0;
char *filename = NULL;
MSTP_Port.InputBuffer = &RxBuffer[0];
MSTP_Port.InputBufferSize = sizeof(RxBuffer);
MSTP_Port.OutputBuffer = &TxBuffer[0];
MSTP_Port.OutputBufferSize = sizeof(TxBuffer);
MSTP_Port.This_Station = 127;
MSTP_Port.Nmax_info_frames = 1;
MSTP_Port.Nmax_master = 127;
MSTP_Port.SilenceTimer = Timer_Silence;
MSTP_Port.SilenceTimerReset = Timer_Silence_Reset;
/* mimic our pointer in the state machine */
mstp_port = &MSTP_Port;
MSTP_Init(mstp_port);
packet_statistics_clear();
/* decode any command line parameters */
filename = filename_remove_path(argv[0]);
for (argi = 1; argi < argc; argi++) {
if (strcmp(argv[argi], "--help") == 0) {
print_usage(filename);
print_help(filename);
return 0;
}
if (strcmp(argv[argi], "--version") == 0) {
printf("mstpcap %s\n", BACNET_VERSION_TEXT);
printf("Copyright (C) 2011 by Steve Karg\n"
"This is free software; see the source for copying conditions.\n"
"There is NO warranty; not even for MERCHANTABILITY or\n"
"FITNESS FOR A PARTICULAR PURPOSE.\n");
return 0;
}
if (strcmp(argv[argi], "--scan") == 0) {
argi++;
if (argi >= argc) {
printf("An file name must be provided.\n");
return 1;
}
printf("Scanning %s\n", argv[argi]);
/* perform statistics on the file */
if (test_global_header(argv[argi])) {
while (read_received_packet(mstp_port)) {
packet_count++;
fprintf(stderr, "\r%u packets",
(unsigned) packet_count);
}
if (packet_count) {
packet_statistics_print();
}
} else {
fprintf(stderr, "File header does not match.\n");
}
}
if (strcmp(argv[argi], "--extcap-interfaces") == 0) {
RS485_Print_Ports();
return 0;
}
if (strcmp(argv[argi], "--extcap-dlts") == 0) {
argi++;
if (argi >= argc) {
printf("An interface must be provided.\n");
return 0;
}
printf("dlt {number=%u}{name=BACnet MS/TP}"
"{display=BACnet MS/TP}\n",
DLT_BACNET_MS_TP);
Exit_Requested = true;
}
if (strcmp(argv[argi], "--extcap-config") == 0) {
printf("arg {number=0}{call=--baud}{display=Baud Rate}"
"{tooltip=Serial port baud rate in bits per second}"
"{type=selector}\n");
printf("value {arg=0}{value=9600}{display=9600}{default=false}\n");
printf("value {arg=0}{value=19200}{display=19200}{default=false}\n");
printf("value {arg=0}{value=38400}{display=38400}{default=true}\n");
printf("value {arg=0}{value=57600}{display=57600}{default=false}\n");
printf("value {arg=0}{value=76800}{display=76800}{default=false}\n");
printf("value {arg=0}{value=115200}{display=115200}{default=false}\n");
return 0;
}
if (strcmp(argv[argi], "--capture") == 0) {
/* do nothing - fall through and start running! */
}
if (strcmp(argv[argi], "--extcap-interface") == 0) {
argi++;
if (argi >= argc) {
printf("An interface must be provided or "
"the selection must be displayed.\n");
return 0;
}
RS485_Set_Interface(argv[argi]);
}
if (strcmp(argv[argi], "--baud") == 0) {
argi++;
if (argi >= argc) {
printf("A baud rate must be provided.\n");
return 0;
}
my_baud = strtol(argv[argi], NULL, 0);
RS485_Set_Baud_Rate(my_baud);
}
if (strcmp(argv[argi], "--fifo") == 0) {
argi++;
if (argi >= argc) {
printf("A named pipe must be provided.\n");
return 0;
}
named_pipe_create(argv[argi]);
}
}
if (Exit_Requested) {
return 0;
}
if (argc <= 1) {
RS485_Print_Ports();
return 0;
}
atexit(cleanup);
RS485_Initialize();
timer_init();
fprintf(stdout, "mstpcap: Using %s for capture at %ld bps.\n",
RS485_Interface(), (long) RS485_Get_Baud_Rate());
#if defined(_WIN32)
SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_PROCESSED_INPUT);
SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlCHandler, TRUE);
#else
signal_init();
#endif
filename_create_new();
/* 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) {
write_received_packet(mstp_port);
mstp_port->ReceivedValidFrame = false;
packet_count++;
} else if (mstp_port->ReceivedValidFrameNotForUs) {
write_received_packet(mstp_port);
mstp_port->ReceivedValidFrameNotForUs = false;
packet_count++;
} else if (mstp_port->ReceivedInvalidFrame) {
write_received_packet(mstp_port);
Invalid_Frame_Count++;
mstp_port->ReceivedInvalidFrame = false;
packet_count++;
}
if (!(packet_count % 100)) {
fprintf(stdout, "\r%hu packets, %hu invalid frames", packet_count,
Invalid_Frame_Count);
}
if (packet_count >= 65535) {
packet_statistics_print();
packet_statistics_clear();
filename_create_new();
packet_count = 0;
}
if (Exit_Requested) {
break;
}
}
/* tell signal interrupts we are done */
Exit_Requested = false;
return 0;
}
/* return the length of the apdu encoded or -1 for error */
int Device_Encode_Property_APDU(
uint8_t * apdu,
uint32_t object_instance,
BACNET_PROPERTY_ID property,
int32_t array_index,
BACNET_ERROR_CLASS * error_class,
BACNET_ERROR_CODE * error_code)
{
int apdu_len = 0; /* return value */
int len = 0; /* apdu len intermediate value */
BACNET_BIT_STRING bit_string;
BACNET_CHARACTER_STRING char_string;
unsigned i = 0;
int object_type = 0;
uint32_t instance = 0;
unsigned count = 0;
BACNET_TIME local_time;
BACNET_DATE local_date;
uint8_t year = 0;
char string_buffer[24];
int16_t TimeZone = 0;
object_instance = object_instance;
/* FIXME: change the hardcoded names to suit your application */
switch (property) {
case PROP_OBJECT_IDENTIFIER:
apdu_len =
encode_application_object_id(&apdu[0], OBJECT_DEVICE,
Object_Instance_Number);
break;
case PROP_OBJECT_NAME:
(void) strcpypgm2ram(&string_buffer[0], "PIC18F6720 Device");
characterstring_init_ansi(&char_string, string_buffer);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_OBJECT_TYPE:
apdu_len = encode_application_enumerated(&apdu[0], OBJECT_DEVICE);
break;
case PROP_DESCRIPTION:
(void) strcpypgm2ram(&string_buffer[0], "BACnet Demo");
characterstring_init_ansi(&char_string, string_buffer);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_SYSTEM_STATUS:
apdu_len =
encode_application_enumerated(&apdu[0],
Device_System_Status());
break;
case PROP_VENDOR_NAME:
(void) strcpypgm2ram(&string_buffer[0], BACNET_VENDOR_NAME);
characterstring_init_ansi(&char_string, string_buffer);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_VENDOR_IDENTIFIER:
apdu_len =
encode_application_unsigned(&apdu[0],
Device_Vendor_Identifier());
break;
case PROP_MODEL_NAME:
(void) strcpypgm2ram(&string_buffer[0], "GNU Demo");
characterstring_init_ansi(&char_string, string_buffer);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_FIRMWARE_REVISION:
characterstring_init_ansi(&char_string, BACnet_Version);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_APPLICATION_SOFTWARE_VERSION:
(void) strcpypgm2ram(&string_buffer[0], "1.0");
characterstring_init_ansi(&char_string, string_buffer);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_LOCATION:
(void) strcpypgm2ram(&string_buffer[0], "USA");
characterstring_init_ansi(&char_string, string_buffer);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_PROTOCOL_VERSION:
apdu_len =
encode_application_unsigned(&apdu[0],
Device_Protocol_Version());
break;
case PROP_PROTOCOL_REVISION:
apdu_len =
encode_application_unsigned(&apdu[0],
Device_Protocol_Revision());
break;
/* BACnet Legacy Support */
case PROP_PROTOCOL_CONFORMANCE_CLASS:
apdu_len = encode_application_unsigned(&apdu[0], 1);
break;
case PROP_PROTOCOL_SERVICES_SUPPORTED:
/* Note: list of services that are executed, not initiated. */
bitstring_init(&bit_string);
for (i = 0; i < MAX_BACNET_SERVICES_SUPPORTED; i++) {
/* automatic lookup based on handlers set */
bitstring_set_bit(&bit_string, (uint8_t) i,
apdu_service_supported(i));
}
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_PROTOCOL_OBJECT_TYPES_SUPPORTED:
/* Note: this is the list of objects that can be in this device,
not a list of objects that this device can access */
bitstring_init(&bit_string);
for (i = 0; i < MAX_ASHRAE_OBJECT_TYPE; i++) {
/* initialize all the object types to not-supported */
bitstring_set_bit(&bit_string, (uint8_t) i, false);
}
/* FIXME: indicate the objects that YOU support */
bitstring_set_bit(&bit_string, OBJECT_DEVICE, true);
bitstring_set_bit(&bit_string, OBJECT_ANALOG_VALUE, true);
bitstring_set_bit(&bit_string, OBJECT_BINARY_VALUE, true);
bitstring_set_bit(&bit_string, OBJECT_ANALOG_INPUT, true);
bitstring_set_bit(&bit_string, OBJECT_BINARY_INPUT, true);
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_OBJECT_LIST:
count = Device_Object_List_Count();
/* Array element zero is the number of objects in the list */
if (array_index == 0)
apdu_len = encode_application_unsigned(&apdu[0], count);
/* if no index was specified, then try to encode the entire list */
/* into one packet. Note that more than likely you will have */
/* to return an error if the number of encoded objects exceeds */
/* your maximum APDU size. */
else if (array_index == BACNET_ARRAY_ALL) {
for (i = 1; i <= count; i++) {
if (Device_Object_List_Identifier(i, &object_type,
&instance)) {
len =
encode_application_object_id(&apdu[apdu_len],
object_type, instance);
apdu_len += len;
/* assume next one is the same size as this one */
/* can we all fit into the APDU? */
if ((apdu_len + len) >= MAX_APDU) {
*error_class = ERROR_CLASS_SERVICES;
*error_code = ERROR_CODE_NO_SPACE_FOR_OBJECT;
apdu_len = -1;
break;
}
} else {
/* error: internal error? */
*error_class = ERROR_CLASS_SERVICES;
*error_code = ERROR_CODE_OTHER;
apdu_len = -1;
break;
}
}
} else {
if (Device_Object_List_Identifier(array_index, &object_type,
&instance))
apdu_len =
encode_application_object_id(&apdu[0], object_type,
instance);
else {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
apdu_len = -1;
}
}
break;
case PROP_MAX_APDU_LENGTH_ACCEPTED:
apdu_len = encode_application_unsigned(&apdu[0], MAX_APDU);
break;
case PROP_SEGMENTATION_SUPPORTED:
apdu_len =
encode_application_enumerated(&apdu[0],
Device_Segmentation_Supported());
break;
case PROP_APDU_TIMEOUT:
apdu_len = encode_application_unsigned(&apdu[0], apdu_timeout());
break;
case PROP_NUMBER_OF_APDU_RETRIES:
apdu_len = encode_application_unsigned(&apdu[0], apdu_retries());
break;
case PROP_DEVICE_ADDRESS_BINDING:
/* FIXME: encode the list here, if it exists */
break;
case PROP_DATABASE_REVISION:
apdu_len =
encode_application_unsigned(&apdu[0],
Device_Database_Revision());
break;
case PROP_MAX_INFO_FRAMES:
apdu_len =
encode_application_unsigned(&apdu[0],
dlmstp_max_info_frames());
break;
case PROP_MAX_MASTER:
apdu_len =
encode_application_unsigned(&apdu[0], dlmstp_max_master());
break;
case PROP_LOCAL_TIME:
/* FIXME: if you support time */
local_time.hour = 0;
local_time.min = 0;
local_time.sec = 0;
local_time.hundredths = 0;
apdu_len = encode_application_time(&apdu[0], &local_time);
break;
case PROP_UTC_OFFSET:
/* Note: BACnet Time Zone is offset of local time and UTC,
rather than offset of GMT. It is expressed in minutes */
apdu_len = encode_application_signed(&apdu[0], 5 * 60 /* EST */ );
break;
case PROP_LOCAL_DATE:
/* FIXME: if you support date */
local_date.year = 2006; /* AD */
local_date.month = 4; /* Jan=1..Dec=12 */
local_date.day = 11; /* 1..31 */
local_date.wday = 0; /* 1=Mon..7=Sun */
apdu_len = encode_application_date(&apdu[0], &local_date);
break;
case PROP_DAYLIGHT_SAVINGS_STATUS:
/* FIXME: if you support time/date */
apdu_len = encode_application_boolean(&apdu[0], false);
break;
case 9600:
apdu_len =
encode_application_unsigned(&apdu[0], RS485_Get_Baud_Rate());
break;
default:
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_UNKNOWN_PROPERTY;
apdu_len = -1;
break;
}
return apdu_len;
}
uint32_t dlmstp_baud_rate(
void)
{
return RS485_Get_Baud_Rate();
}
