upm/examples/javascript/rn2903-p2p-rx.js
Jon Trulson 21a1860ec2 rn2903: Initial implementation; C; C++ wraps C; examples
This requires a new MRAA with UART sendbreak support.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
2017-05-09 13:44:12 -06:00

104 lines
3.3 KiB
JavaScript

/*
* Author: Jon Trulson <jtrulson@ics.com>
* 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 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);
});