/** Main function which starts the service, this will be an blocking function.If any error is there it returns immediately.
* Returns immediately on error, else will be an blocking function.
* @param port serial device port name.
* @return error status of <b>open()</b> or <b>tcsetattr()</b>.
* @note This is an blocking function, so it should be called from different thread.
*
* */
int gecko_start_serial_service(char * port)
{
init_serial_lock();
struct sigaction saio;
saio.sa_handler = signal_callback_handler;
sigemptyset(&saio.sa_mask);
saio.sa_flags = 0;
saio.sa_restorer = NULL;
sigaction(SIGINT, &saio, NULL);
//char * port = "/dev/ttyUSB0";
LOGGER(LOG_DEBUG,"Using port %s", port);
int fd = open_serial_port(port);
if (fd == -1)
{
LOGGER(LOG_ERR,"error in open device %s",port);
return EXIT_FAILURE;
}
if (configure_serial_port(fd) != -1)
{
if(LOG_LEVEL==LOG_DEBUG)
read_display_current_configuration(fd);
serial_write(fd, START_SCAN);
LOGGER(LOG_DEBUG,"send start scan command to serial device\n");
start_serial_reader_thread(fd);
}
else
{
LOGGER(LOG_CRIT,"Error in opening serial port\n");
perror("error in configuring port");
}
return EXIT_SUCCESS;
}
int main(int argc, char *argv[])
{
int ret = 0;
struct stat st;
int status = 0;
int opt;
progname = argv[0];
while ((opt = getopt (argc, argv, "D:b:fc:sh")) != -1)
{
switch (opt)
{
case 'D': device_path = optarg; if (strlen(device_path) == 0) syntax(); break;
case 'b': baudrate = atoi(optarg); if (baudrate == 0) syntax(); break;
case 'f': flowcontrol = 1; break;
case 'c': csize = atoi(optarg); if ((csize < 5) || (csize > 8)) syntax(); break;
case 's': twostopbits = 1; break;
case 'h': // fall through
default:
syntax();
break;
}
}
if (device_path == NULL)
syntax();
if (stat(device_path, &st) != 0)
{
fprintf(stderr, "Error: %s does not exist\n", device_path);
ret = EXIT_FAILURE;
goto main_init_error;
}
serial_fd = open(device_path, O_RDWR | O_NOCTTY | O_NONBLOCK | O_NDELAY);
if (serial_fd < 0)
{
fprintf(stderr, "Error: unable to open %s\n", device_path);
ret = EXIT_FAILURE;
goto main_init_error;
}
if (configure_serial_port(serial_fd) != 0)
{
fprintf(stderr, "Error: unable to configure %s\n", device_path);
ret = EXIT_FAILURE;
goto main_init_error;
}
// set standard file descriptors to non-blocking
set_non_block(STDIN_FILENO, 1);
set_non_block(STDOUT_FILENO, 1);
set_non_block(STDERR_FILENO, 1);
signal(SIGINT, handle_terminate_signal);
signal(SIGTERM, handle_terminate_signal);
forward(serial_fd);
main_init_error:
if (serial_fd >= 0)
{
close(serial_fd);
serial_fd = -1;
}
return ret;
}
