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162 lines
5.0 KiB
JavaScript
162 lines
5.0 KiB
JavaScript
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/*jslint node:true, vars:true, bitwise:true, unparam:true */
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/*jshint unused:true */
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/*
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* Author: Zion Orent <zorent@ics.com>
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* Copyright (c) 2015 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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function printUsage()
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{
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var outputStr = "Usage:\n" +
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"Pass a commandline argument (any argument) to this program\n" +
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"to query the radio configuration and output it. NOTE: the\n" +
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"radio must be in CONFIG mode for this to work.\n\n" +
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"Running this program without arguments will simply transmit\n" +
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"'Hello World!' every second, and output any data received from\n" +
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"another radio.\n\n";
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console.log(outputStr);
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}
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var HMTRP_Radio = require('jsupm_hmtrp');
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// Instantiate a HMTRP radio device on uart 0
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var my_HMTRP_Radio = new HMTRP_Radio.HMTRP(0);
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var g_myInterval;
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var g_counter = 0;
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// normal read/write mode
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var bufferLength = 256;
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var radioBuffer = new HMTRP_Radio.charArray(bufferLength);
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// make sure port is initialized properly. 9600 baud is the default.
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if (!my_HMTRP_Radio.setupTty(HMTRP_Radio.int_B9600))
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{
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console.log("Failed to setup tty port parameters");
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process.exit(0);
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}
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printUsage();
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// By default, this radio simply transmits data sent via writeData()
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// and reads any available data via readData().
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// It can be placed into a configuration mode by grounding the
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// CONFIG pin on the module. When this is done, the various
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// configuration query and config methods can be used. In this
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// example, by default, we just read any data available fom the
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// device, and periodically transmit "Hello World".
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// If any argument was specified on the command line, do a simple
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// configuration query and output the results. The radio must be in
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// CONFIG mode for this to work.
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// Note that the first command-line argument
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// should be "node" and the second is "hmtrp.js".
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// The data we want would be the third... if it exists
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if (process.argv.length > 2)
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{
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// config mode
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var freq = new HMTRP_Radio.uint32Array(0);
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var dataRate = new HMTRP_Radio.uint32Array(0);
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var rxBandwidth = new HMTRP_Radio.uint16Array(0);
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var modulation = new HMTRP_Radio.uint8Array(0);
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var txPower = new HMTRP_Radio.uint8Array(0);
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var uartBaud = new HMTRP_Radio.uint32Array(0);
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if (my_HMTRP_Radio.getConfig(
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freq, dataRate, rxBandwidth, modulation, txPower, uartBaud))
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{
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console.log("Radio configuration:");
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var outputStr = "freq: " + freq.getitem(0) +
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" dataRate: " + dataRate.getitem(0) +
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" rxBandwidth: " + rxBandwidth.getitem(0) + "Khz";
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console.log(outputStr);
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outputStr = "modulation: " + parseInt(modulation.getitem(0));
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outputStr += " Khz txPower: " + parseInt(txPower.getitem(0));
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outputStr += " uartBaud: " + uartBaud.getitem(0);
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console.log(outputStr);
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}
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else
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{
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var errString = "getConfig() failed. Make sure the radio " +
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"is in CONFIG mode.";
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console.log(errString);
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}
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}
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else
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{
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console.log("Running in normal read/write mode.");
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g_myInterval = setInterval(runRadio, 100); // 100ms
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}
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function runRadio()
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{
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// we don't want the read to block in this example, so always
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// check to see if data is available first.
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if (my_HMTRP_Radio.dataAvailable())
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{
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var rv = my_HMTRP_Radio.readData(radioBuffer, bufferLength);
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if (rv > 0)
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{
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var resultStr = "";
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for (var x = 0; x < rv; x++)
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resultStr += radioBuffer.getitem(x);
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console.log("Received: " + resultStr);
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}
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if (rv < 0) // some sort of read error occured
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{
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console.log("Port read error.");
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return;
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}
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}
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g_counter++;
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// every second, transmit "Hello World"
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if (g_counter > 10)
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{
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var msg = "Hello World!";
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console.log("Transmitting " + msg + "...");
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// Adding 1 for NULL terminator.
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// Note that SWIG automatically adds a NULL terminator,
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// so no need to NULL-terminate ourselves.
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// Just increment the message length to include
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// the NULL that's already there
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my_HMTRP_Radio.writeData(msg, (msg.length + 1));
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g_counter = 0;
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}
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}
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// When exiting: clear interval and print message
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process.on('SIGINT', function()
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{
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clearInterval(g_myInterval);
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console.log("Exiting...");
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process.exit(0);
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});
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