/* * Author: Jon Trulson * Copyright (c) 2015 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_sx1276'); var count = 0; var interval; /************** Functions **************/ function transmit(sensor) { var buffer = "Ping " + count; count++; console.log("Sending... " + buffer); sensor.sendStr(buffer, 3000); sensor.setSleep(); } function receive(sensor) { console.log("Attempting to receive... "); var rv = 0; rv = sensor.setRx(3000); if (rv) { console.log("setRx returned " + rv); } else { console.log("Received Buffer: " + sensor.getRxBufferStr()); } sensor.setSleep(); } /************** Main code **************/ // Instantiate an SX1276 using default parameters var sensor = new sensorObj.SX1276(); console.log("Specify an argument to go into receive mode. Default is transmit"); // 915Mhz sensor.setChannel(915000000) // LORA configuration (rx and tx must be configured the same): // Tx output power = 14 dBm // LORA bandwidth = 125000 (can also be 250K and 500K) // LORA spreading factor = 7 // LORA coding rate = 1 (4/5) // LORA preamble len = 8 // LORA symbol timeout = 5 // LORA fixed payload = false // LORA IQ inversion = false // LORA (rx) continuous Rx mode = true sensor.setTxConfig(sensorObj.SX1276.MODEM_LORA, 14, 0, 125000, 7, 1, 8, false, true, false, 0, false); sensor.setRxConfig(sensorObj.SX1276.MODEM_LORA, 125000, 7, 1, 0, 8, 5, false, 0, true, false, 0, false, true); if (process.argv.length > 2) { // receive mode interval = setInterval(function() { receive(sensor); }, 250); } else { // transmit mode interval = setInterval(function() { transmit(sensor); }, 1000); } /************** Exit code **************/ process.on('SIGINT', function() { sensor = null; sensorObj.cleanUp(); sensorObj = null; console.log("Exiting..."); process.exit(0); });