upm/examples/javascript/sx1276-fsk.js

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/*
* Author: Jon Trulson <jtrulson@ics.com>
* 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)
// FSK configuration (rx and tx must be configured the same):
// Tx output power = 14 dBm
// FSK freq deviation = 25000 Hz
// FSK bandwidth = 50000 bps
// FSK AFC bandwidth = 83333 Hz
// FSK datarate = 50000 bps
// FSK preamble len = 5
// FSK fixed length payload = false
// FSK CRC check = true
// FSK (rx) continuous Rx mode = False
sensor.setTxConfig(sensorObj.SX1276.MODEM_FSK, 14, 25000, 0,
50000, 0, 5, false, true, false, 0, false);
sensor.setRxConfig(sensorObj.SX1276.MODEM_FSK, 50000, 50000,
0, 83333, 5, 0, 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);
});