/* * Author: Jon Trulson * Copyright (c) 2017 Intel Corporation. * * This program and the accompanying materials are made available under the * terms of the The MIT License which is available at * https://opensource.org/licenses/MIT. * * SPDX-License-Identifier: MIT */ 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 to receive a packet // transmitted by the p2p-tx rn2903 example. 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(); // We will use continuous mode (window_size 0), though the default // radio watch dog timer will expire every 15 seconds. We will // just loop here. while (true) { console.log("Waiting for packet..."); var rv = sensor.radioRx(0); if (rv) { console.log("radioRx() failed with code " + rv); } else { var resp = sensor.getResponse(); var payload = sensor.getRadioRxPayload(); if (!payload.length) console.log("Got response: '" + resp + "'"); else console.log("Got payload: '" + sensor.fromHex(payload) + "'"); } console.log(); } process.on('SIGINT', function() { sensor = null; sensorObj.cleanUp(); sensorObj = null; console.log("Exiting..."); process.exit(0); });