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91 lines
2.4 KiB
JavaScript
91 lines
2.4 KiB
JavaScript
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2017 Intel Corporation.
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*
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* This program and the accompanying materials are made available under the
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* terms of the The MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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*/
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var sensorObj = require('jsupm_rn2903');
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var defaultDev = "/dev/ttyUSB0";
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// if an argument was specified, use it as the device instead
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if (process.argv.length > 2)
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{
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defaultDev = process.argv[2];
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}
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console.log("Using device:", defaultDev);
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// Instantiate a RN2903 sensor on defaultDev at 57600 baud.
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var sensor = new sensorObj.RN2903(defaultDev,
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sensorObj.RN2903_DEFAULT_BAUDRATE);
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// To use an internal UART understood by MRAA, use the following
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// to inititialize rather than the above, which by default uses a
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// tty path.
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//
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// var sensor = new sensorObj.RN2903(0,
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// sensorObj.RN2903_DEFAULT_BAUDRATE);
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// enable debugging
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// sensor.setDebug(true);
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// get version
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if (sensor.command("sys get ver"))
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{
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console.log("Failed to retrieve device version string");
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process.exit(1);
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}
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console.log("Firmware version: " + sensor.getResponse());
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console.log("Hardware EUI: " + sensor.getHardwareEUI());
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// For this example, we will just try to receive a packet
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// transmitted by the p2p-tx rn2903 example. We reset the
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// device to defaults, and we do not make any adjustments to the
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// radio configuration. You will probably want to do so for a
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// real life application.
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// The first thing to do is to suspend the LoRaWAN stack on the device.
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sensor.macPause();
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// We will use continuous mode (window_size 0), though the default
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// radio watch dog timer will expire every 15 seconds. We will
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// just loop here.
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while (true)
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{
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console.log("Waiting for packet...");
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var rv = sensor.radioRx(0);
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if (rv)
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{
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console.log("radioRx() failed with code " + rv);
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}
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else
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{
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var resp = sensor.getResponse();
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var payload = sensor.getRadioRxPayload();
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if (!payload.length)
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console.log("Got response: '" + resp + "'");
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else
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console.log("Got payload: '"
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+ sensor.fromHex(payload)
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+ "'");
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}
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console.log();
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}
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process.on('SIGINT', function() {
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sensor = null;
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sensorObj.cleanUp();
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sensorObj = null;
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console.log("Exiting...");
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process.exit(0);
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});
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