/* * Author: Jon Trulson * Copyright (c) 2017 Intel Corporation. * * 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. */ var sensorObj = require('jsupm_rn2903'); var defaultDev = "/dev/ttyUSB0"; // if an argument was specified, use it as the device instead if (process.argv.length > 2) { defaultDev = process.argv[2]; } console.log("Using device:", defaultDev); // Instantiate a RN2903 sensor on defaultDev at 57600 baud. var sensor = new sensorObj.RN2903(defaultDev, sensorObj.RN2903_DEFAULT_BAUDRATE); // To use an internal UART understood by MRAA, use the following // to inititialize rather than the above, which by default uses a // tty path. // // var sensor = new sensorObj.RN2903(0, // sensorObj.RN2903_DEFAULT_BAUDRATE); // enable debugging // sensor.setDebug(true); // get version if (sensor.command("sys get ver")) { console.log("Failed to retrieve device version string"); process.exit(1); } console.log("Firmware version: " + sensor.getResponse()); console.log("Hardware EUI: " + sensor.getHardwareEUI()); // For this example, we will just try transmitting a packet over // LoRa. We reset the device to defaults, and we do not make any // adjustments to the radio configuration. You will probably want // to do so for a real life application. // The first thing to do is to suspend the LoRaWAN stack on the device. sensor.macPause(); // the default radio watchdog timer is set for 15 seconds, so we // will send a packet every 10 seconds. In reality, local // restrictions limit the amount of time on the air, so in a real // implementation, you would not want to send packets that // frequently. var count = 0; function transmit() { var output = "Ping " + count; count++; // All payloads must be hex encoded var payload = sensor.toHex(output); console.log("Transmitting a packet, data: '" + output + "' -> hex: '" + payload + "'"); var rv = sensor.radioTx(payload); if (rv == sensorObj.RN2903_RESPONSE_OK) console.log("Transmit successful."); else console.log("Transmit failed with code " + rv); console.log(); } setInterval(transmit, 10000); process.on('SIGINT', function() { sensor = null; sensorObj.cleanUp(); sensorObj = null; console.log("Exiting..."); process.exit(0); });