/* DESC: This script can be used to write a message to the serial port. * Copyright (C) 2012 NetModule AG, Switzerland */ void usage() { printf("usage: serial-write.are \n"); exit(1); } if (argc < 2) { usage(); } DEV = "SERIAL1"; MSG = argv[1]; /* check serial port config */ st = nb_config_get("serial.0.status"); if (st != "2") { printf("Serial port is not enabled for us\n"); exit(1); } ret = nb_serial_setattr(DEV, 115200, 8, 1, 0, 0); if (ret != 0) { printf("Could not set serial attributes: %i \n",ret); exit(1); } fd = nb_serial_open(DEV); if (fd < 0) { printf("Unable to open %s\n", DEV); exit(1); } message = strcat(MSG, "\r\n"); ret = write(fd, message, strlen(message)); if (ret> 0) { printf("Wrote %d bytes to %s\n", ret, DEV); } else { printf("Unable to write to %s\n", DEV); } close(fd); exit(0);