int main(int argc, char *argv[])
{
int opt, log_opts, debug = 0, foreground = 1;
/* register the signal handler */
signal(SIGINT, handle_sigint);
signal(SIGTERM, handle_sigint);
while ((opt = getopt(argc, argv, "hdb")) != -1) {
switch (opt) {
case 'h':
print_usage();
exit(0);
case 'd':
debug = 1;
break;
case 'b':
foreground = 0;
break;
default:
print_usage();
exit(0);
}
}
log_opts = LOG_CONS;
if (foreground && isatty(STDIN_FILENO)) {
// Also print syslog to stderror
log_opts |= LOG_PERROR;
}
if (!debug) {
setlogmask(LOG_UPTO (LOG_INFO));
}
openlog(NULL, log_opts, LOG_USER);
if (!foreground && !debug) {
if (daemonize() != 0) {
exit(EXIT_FAILURE);
}
}
mys_log(LOG_INFO, "Starting gateway...\n");
mys_log(LOG_INFO, "Protocol version - %s\n", MYSENSORS_LIBRARY_VERSION);
_begin(); // Startup MySensors library
for (;;) {
_process(); // Process incoming data
if (loop) loop(); // Call sketch loop
}
return 0;
}
void SPIClass::begin() {
if (!initialized) {
if (!bcm2835_spi_begin()) {
mys_log(LOG_ERR, "You need to be root to use SPI.\n");
exit(1);
}
}
initialized++; // reference count
}
void handle_sigint(int sig)
{
if (sig == SIGINT) {
mys_log(LOG_NOTICE, "Received SIGINT\n\n");
} else if (sig == SIGTERM) {
mys_log(LOG_NOTICE, "Received SIGTERM\n\n");
} else {
return;
}
#ifdef MY_RF24_IRQ_PIN
detachInterrupt(MY_RF24_IRQ_PIN);
#endif
#if defined(MY_GATEWAY_SERIAL)
MY_SERIALDEVICE.end();
#endif
exit(0);
}
static int daemonize(void)
{
pid_t pid, sid;
/* Fork off the parent process */
pid = fork();
if (pid < 0) {
mys_log(LOG_ERR, "fork: %s", strerror(errno));
return -1;
}
/* If we got a good PID, then we can exit the parent process. */
if (pid > 0) {
exit(EXIT_SUCCESS);
}
/* At this point we are executing as the child process */
/* Change the file mode mask */
umask(0);
/* Create a new SID for the child process */
sid = setsid();
if (sid < 0) {
mys_log(LOG_ERR, "setsid: %s", strerror(errno));
return -1;
}
/* Change the current working directory. This prevents the current
directory from being locked; hence not being able to remove it. */
if ((chdir("/")) < 0) {
mys_log(LOG_ERR, "chdir(\"/\"): %s", strerror(errno));
return -1;
}
freopen( "/dev/null", "r", stdin);
freopen( "/dev/null", "r", stdout);
freopen( "/dev/null", "r", stderr);
return 0;
}
SPIClass::SPIClass() {
if (!bcm2835_init()) {
mys_log(LOG_ERR, "Failed to initialized bcm2835.\n");
exit(1);
}
}
