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bacnet_stack/bacnet-stack/demo/timesync/main.c
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/**************************************************************************
*
* Copyright (C) 2006 Steve Karg <skarg@users.sourceforge.net>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*********************************************************************/
/* command line tool that sends a BACnet service, and displays the reply */
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h> /* for time */
#include <errno.h>
#include "bactext.h"
#include "config.h"
#include "bacdef.h"
#include "npdu.h"
#include "apdu.h"
#include "device.h"
#include "net.h"
#include "datalink.h"
#include "timesync.h"
/* some demo stuff needed */
#include "filename.h"
#include "handlers.h"
#include "client.h"
#include "txbuf.h"
/* buffer used for receive */
static uint8_t Rx_Buf[MAX_MPDU] = { 0 };
/* global variables used in this file */
#if 0
static int32_t Target_Object_Instance_Min = 0;
static int32_t Target_Object_Instance_Max = BACNET_MAX_INSTANCE;
#endif
static bool Error_Detected = false;
void MyAbortHandler(
BACNET_ADDRESS * src,
uint8_t invoke_id,
uint8_t abort_reason,
bool server)
{
/* FIXME: verify src and invoke id */
(void) src;
(void) invoke_id;
(void) server;
printf("BACnet Abort: %s\r\n", bactext_abort_reason_name(abort_reason));
Error_Detected = true;
}
void MyRejectHandler(
BACNET_ADDRESS * src,
uint8_t invoke_id,
uint8_t reject_reason)
{
/* FIXME: verify src and invoke id */
(void) src;
(void) invoke_id;
printf("BACnet Reject: %s\r\n", bactext_reject_reason_name(reject_reason));
Error_Detected = true;
}
static void Init_Service_Handlers(
void)
{
/* we need to handle who-is
to support dynamic device binding to us */
apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_WHO_IS, handler_who_is);
/* set the handler for all the services we don't implement
It is required to send the proper reject message... */
apdu_set_unrecognized_service_handler_handler
(handler_unrecognized_service);
/* we must implement read property - it's required! */
apdu_set_confirmed_handler(SERVICE_CONFIRMED_READ_PROPERTY,
handler_read_property);
/* handle the reply (request) coming in */
apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_UTC_TIME_SYNCHRONIZATION,
handler_timesync_utc);
apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_TIME_SYNCHRONIZATION,
handler_timesync);
/* handle any errors coming back */
apdu_set_abort_handler(MyAbortHandler);
apdu_set_reject_handler(MyRejectHandler);
}
static void Init_DataLink(
void)
{
char *pEnv = NULL;
#if defined(BACDL_BIP) && BBMD_ENABLED
long bbmd_port = 0xBAC0;
long bbmd_address = 0;
long bbmd_timetolive_seconds = 60000;
#endif
#if defined(BACDL_ALL)
pEnv = getenv("BACNET_DATALINK");
if (pEnv) {
datalink_set(pEnv));
} else {
datalink_set(NULL);
}
#endif
#if defined(BACDL_BIP)
pEnv = getenv("BACNET_IP_PORT");
if (pEnv) {
bip_set_port(strtol(pEnv, NULL, 0));
} else {
bip_set_port(0xBAC0);
}
#elif defined(BACDL_MSTP)
pEnv = getenv("BACNET_MAX_INFO_FRAMES");
if (pEnv) {
dlmstp_set_max_info_frames(strtol(pEnv, NULL, 0));
} else {
dlmstp_set_max_info_frames(1);
}
pEnv = getenv("BACNET_MAX_MASTER");
if (pEnv) {
dlmstp_set_max_master(strtol(pEnv, NULL, 0));
} else {
dlmstp_set_max_master(127);
}
pEnv = getenv("BACNET_MSTP_BAUD");
if (pEnv) {
RS485_Set_Baud_Rate(strtol(pEnv, NULL, 0));
} else {
RS485_Set_Baud_Rate(38400);
}
pEnv = getenv("BACNET_MSTP_MAC");
if (pEnv) {
dlmstp_set_mac_address(strtol(pEnv, NULL, 0));
} else {
dlmstp_set_mac_address(127);
}
#endif
if (!datalink_init(getenv("BACNET_IFACE"))) {
exit(1);
}
#if defined(BACDL_BIP) && BBMD_ENABLED
pEnv = getenv("BACNET_BBMD_PORT");
if (pEnv) {
bbmd_port = strtol(pEnv, NULL, 0);
if (bbmd_port > 0xFFFF) {
bbmd_port = 0xBAC0;
}
}
pEnv = getenv("BACNET_BBMD_TIMETOLIVE");
if (pEnv) {
bbmd_timetolive_seconds = strtol(pEnv, NULL, 0);
if (bbmd_timetolive_seconds > 0xFFFF) {
bbmd_timetolive_seconds = 0xFFFF;
}
}
pEnv = getenv("BACNET_BBMD_ADDRESS");
if (pEnv) {
bbmd_address = bip_getaddrbyname(pEnv);
if (bbmd_address) {
struct in_addr addr;
addr.s_addr = bbmd_address;
printf
("TimeSync: Registering with BBMD at %s:%ld for %ld seconds\n",
inet_ntoa(addr), bbmd_port, bbmd_timetolive_seconds);
bvlc_register_with_bbmd(bbmd_address, bbmd_port,
bbmd_timetolive_seconds);
}
}
#endif
}
int main(int argc, char *argv[]) {
BACNET_ADDRESS src = {
0}; /* address where message came from */
uint16_t pdu_len = 0;
unsigned timeout = 100; /* milliseconds */
time_t elapsed_seconds = 0;
time_t last_seconds = 0;
time_t current_seconds = 0;
time_t timeout_seconds = 0;
time_t rawtime;
struct tm *my_time;
BACNET_DATE bdate;
BACNET_TIME btime;
/* FIXME: we could send directed time sync, and how do we send UTC? */
#if 0
if (argc < 2) {
printf("Usage: %s date time [device-instance]\r\n"
"Send BACnet TimeSynchronization request to all devices.\r\n"
"date format: year/month/day:dayofweek (e.g. 2006/4/1:6)\r\n"
"year: AD, such as 2006\r\n" "month: 1=January, 12=December\r\n"
"day: 1-31\r\n" "dayofweek: 1=Monday, 7=Sunday\r\n" "\r\n"
"time format: hour:minute:second.hundredths (e.g. 23:59:59.12)\r\n"
"hour: 0-23\r\n" "minute: 0-59\r\n" "second: 0-59\r\n"
"hundredths: 0-99\r\n" "\r\n"
"Optional device-instance sends a unicast time sync.\r\n",
filename_remove_path(argv[0]));
return 0;
}
#else
(void) argc;
(void) argv;
#endif
/* setup my info */
Device_Set_Object_Instance_Number(BACNET_MAX_INSTANCE);
Init_Service_Handlers();
Init_DataLink();
/* configure the timeout values */
last_seconds = time(NULL);
timeout_seconds = apdu_timeout() / 1000;
/* send the request */
time(&rawtime);
my_time = localtime(&rawtime);
bdate.year = my_time->tm_year + 1900;
bdate.month = my_time->tm_mon + 1;
bdate.day = my_time->tm_mday;
bdate.wday = my_time->tm_wday ? my_time->tm_wday : 7;
btime.hour = my_time->tm_hour;
btime.min = my_time->tm_min;
btime.sec = my_time->tm_sec;
btime.hundredths = 0;
Send_TimeSync(&bdate, &btime);
/* loop forever - not necessary for time sync, but we can watch */
for (;;) {
/* increment timer - exit if timed out */
current_seconds = time(NULL);
/* returns 0 bytes on timeout */
pdu_len = datalink_receive(&src, &Rx_Buf[0], MAX_MPDU, timeout);
/* process */
if (pdu_len) {
npdu_handler(&src, &Rx_Buf[0], pdu_len);
}
if (Error_Detected)
break;
/* increment timer - exit if timed out */
elapsed_seconds += (current_seconds - last_seconds);
if (elapsed_seconds > timeout_seconds)
break;
/* keep track of time for next check */
last_seconds = current_seconds;
}
return 0;
}
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