C++ (Cpp) serial_source_empty Examples

Example #1

File: serialsource.c Project: mszczodrak/otf

void *read_serial_packet(serial_source src, int *len)
/* Effects: Read the serial source src. If a packet is available, return it.
     If in blocking mode and no packet is available, wait for one.
   Returns: the packet read (in newly allocated memory), with *len is
     set to the packet length, or NULL if no packet is yet available and
     the serial source is in non-blocking mode
*/
{
  read_and_process(src, TRUE);
  for (;;)
    {
      struct packet_list *entry;

      entry = pop_protocol_packet(src, P_PACKET_NO_ACK);
      if (entry)
	{
	  uint8_t *packet = entry->packet;

	  *len = entry->len;
	  free(entry);

	  return packet;
	}
      if (src->non_blocking && serial_source_empty(src))
	return NULL;
      source_wait(src, NULL);
      read_and_process(src, src->non_blocking);
    }
}

Example #2

File: sf.c Project: 0111sandesh/TinyOS-Sec

int main(int argc, char **argv)
{
  int serfd;

  if (argc != 4)
    {
      fprintf(stderr,
	      "Usage: %s <port> <device> <rate> - act as a serial forwarder on <port>\n"
	      "(listens to serial port <device> at baud rate <rate>)\n" ,
	      argv[0]);
      exit(2);
    }

  if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
    fprintf(stderr, "Warning: failed to ignore SIGPIPE.\n");

  open_serial(argv[2], platform_baud_rate(argv[3]));
  serfd = serial_source_fd(src);
  open_server_socket(atoi(argv[1]));

  for (;;)
    {
      fd_set rfds;
      int maxfd = -1;
      struct timeval zero;
      int serial_empty;
      int ret;

      zero.tv_sec = zero.tv_usec = 0;

      FD_ZERO(&rfds);
      fd_wait(&rfds, &maxfd, serfd);
      fd_wait(&rfds, &maxfd, server_socket);
      wait_clients(&rfds, &maxfd);

      serial_empty = serial_source_empty(src);
      if (serial_empty)
	ret = select(maxfd + 1, &rfds, NULL, NULL, NULL);
      else
	{
	  ret = select(maxfd + 1, &rfds, NULL, NULL, &zero);
	  check_serial();
	}
      if (ret >= 0)
	{
	  if (FD_ISSET(serfd, &rfds))
	    check_serial();

	  if (FD_ISSET(server_socket, &rfds))
	    check_new_client();

	  check_clients(&rfds);
	}
    }
}

Example #3

File: sf.c Project: araujokth/kth-wsn

int main(int argc, char **argv) {
    int serfd;

    if (argc != 4) {
        fprintf(stderr,
                "Usage: %s <device> <rate> <file> - act as a serial forwarder on <port>\n"
                "(listens to serial port <device> at baud rate <rate>)\n",
                argv[0]);
        exit(2);
    }

    if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
        fprintf(stderr, "Warning: failed to ignore SIGPIPE.\n");
    if (signal(SIGINT, sigproc) == SIG_ERR)
        fprintf(stderr, "Warning: failed to set the SIGINT interruption.\n");
    srcId = -1;

    open_serial(argv[1], platform_baud_rate(argv[2]));

    serfd = serial_source_fd(src);

    open_file_fd(argv[3]);

    dup2(filefd, 1);

    for (;;) {
        fd_set rfds;
        int maxfd = -1;
        struct timeval zero;
        int serial_empty;
        int ret;

        zero.tv_sec = zero.tv_usec = 0;

        FD_ZERO(&rfds);
        fd_wait(&rfds, &maxfd, serfd);

        serial_empty = serial_source_empty(src);
        check_serial();

        if (ret >= 0) {
            if (FD_ISSET(serfd, &rfds))
                check_serial();
        }
    }
}