1/*jslint node:true, vars:true, bitwise:true, unparam:true */
2/*jshint unused:true */
3
4/*
5* Author: Zion Orent <zorent@ics.com>
6* Copyright (c) 2015 Intel Corporation.
7*
8* Permission is hereby granted, free of charge, to any person obtaining
9* a copy of this software and associated documentation files (the
10* "Software"), to deal in the Software without restriction, including
11* without limitation the rights to use, copy, modify, merge, publish,
12* distribute, sublicense, and/or sell copies of the Software, and to
13* permit persons to whom the Software is furnished to do so, subject to
14* the following conditions:
15*
16* The above copyright notice and this permission notice shall be
17* included in all copies or substantial portions of the Software.
18*
19* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
22* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
23* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26*/
27
28function printUsage()
29{
30	var outputStr = "Usage:\n" +
31	"Pass a commandline argument (any argument) to this program\n" +
32	"to query the radio configuration and output it.  NOTE: the\n" +
33	"radio must be in CONFIG mode for this to work.\n\n" +
34	"Running this program without arguments will simply transmit\n" +
35	"'Hello World!' every second, and output any data received from\n" +
36	"another radio.\n\n";
37	console.log(outputStr);
38}
39
40var HMTRP_Radio = require('jsupm_hmtrp');
41
42// Instantiate a HMTRP radio device on uart 0
43var my_HMTRP_Radio = new HMTRP_Radio.HMTRP(0);
44
45var g_myInterval;
46var g_counter = 0;
47
48// normal read/write mode
49var bufferLength = 256;
50var radioBuffer = new HMTRP_Radio.charArray(bufferLength);
51
52// make sure port is initialized properly. 9600 baud is the default.
53if (!my_HMTRP_Radio.setupTty(HMTRP_Radio.int_B9600))
54{
55	console.log("Failed to setup tty port parameters");
56	process.exit(0);
57}
58
59printUsage();
60
61// By default, this radio simply transmits data sent via writeData()
62// and reads any available data via readData().
63
64// It can be placed into a configuration mode by grounding the
65// CONFIG pin on the module.  When this is done, the various
66// configuration query and config methods can be used.  In this
67// example, by default, we just read any data available fom the
68// device, and periodically transmit "Hello World".
69
70// If any argument was specified on the command line, do a simple
71// configuration query and output the results.  The radio must be in
72// CONFIG mode for this to work.
73
74
75// Note that the first command-line argument
76// should be "node" and the second is "hmtrp.js".
77// The data we want would be the third... if it exists
78if (process.argv.length > 2)
79{
80	// config mode
81	var freq = new HMTRP_Radio.uint32Array(0);
82	var dataRate = new HMTRP_Radio.uint32Array(0);
83	var rxBandwidth = new HMTRP_Radio.uint16Array(0);
84	var modulation = new HMTRP_Radio.uint8Array(0);
85	var txPower = new HMTRP_Radio.uint8Array(0);
86	var uartBaud = new HMTRP_Radio.uint32Array(0);
87
88	if (my_HMTRP_Radio.getConfig(
89	freq, dataRate, rxBandwidth, modulation, txPower, uartBaud))
90	{
91		console.log("Radio configuration:");
92		var outputStr = "freq: " + freq.getitem(0) +
93		" dataRate: " + dataRate.getitem(0) +
94		" rxBandwidth: " + rxBandwidth.getitem(0) + "Khz";
95		console.log(outputStr);
96
97		outputStr = "modulation: " + parseInt(modulation.getitem(0));
98		outputStr += " Khz txPower: " + parseInt(txPower.getitem(0));
99		outputStr += " uartBaud: " + uartBaud.getitem(0);
100		console.log(outputStr);
101	}
102	else
103	{
104		var errString = "getConfig() failed.  Make sure the radio " +
105					"is in CONFIG mode.";
106		console.log(errString);
107	}
108}
109else
110{
111	console.log("Running in normal read/write mode.");
112	g_myInterval = setInterval(runRadio, 100); // 100ms
113}
114
115function runRadio()
116{
117	// we don't want the read to block in this example, so always
118	// check to see if data is available first.
119	if (my_HMTRP_Radio.dataAvailable())
120	{
121		var rv = my_HMTRP_Radio.readData(radioBuffer, bufferLength);
122
123		if (rv > 0)
124		{
125			var resultStr = "";
126			for (var x = 0; x < rv; x++)
127				resultStr += radioBuffer.getitem(x);
128			console.log("Received: " + resultStr);
129		}
130
131		if (rv < 0) // some sort of read error occured
132		{
133			console.log("Port read error.");
134			return;
135		}
136	}
137	g_counter++;
138	// every second, transmit "Hello World"
139	if (g_counter > 10)
140	{
141		var msg = "Hello World!";
142
143		console.log("Transmitting " + msg + "...");
144
145		// Adding 1 for NULL terminator.
146		// Note that SWIG automatically adds a NULL terminator,
147		// so no need to NULL-terminate ourselves.
148		// Just increment the message length to include
149		// the NULL that's already there
150		my_HMTRP_Radio.writeData(msg, (msg.length + 1));
151		g_counter = 0;
152	}
153}
154
155// When exiting: clear interval and print message
156process.on('SIGINT', function()
157{
158	clearInterval(g_myInterval);
159	console.log("Exiting...");
160	process.exit(0);
161});
162