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
28var waterFlow_lib = require('jsupm_grovewfs');
29
30// Instantiate a Grove Water Flow Sensor on digital pin D2
31var myWaterFlow_obj = new waterFlow_lib.GroveWFS(2);
32
33// set the flow counter to 0 and start counting
34myWaterFlow_obj.clearFlowCounter();
35myWaterFlow_obj.startFlowCounter();
36
37
38var millis, flowCount, fr;
39var myInterval = setInterval(function()
40{
41	// we grab these (millis and flowCount) just for display
42	// purposes in this example
43	millis = myWaterFlow_obj.getMillis();
44	flowCount = myWaterFlow_obj.flowCounter();
45
46	fr = myWaterFlow_obj.flowRate();
47
48	// output milliseconds passed, flow count, and computed flow rate
49	outputStr = "Millis: " + millis + " Flow Count: " + flowCount +
50	" Flow Rate: " + fr + " LPM";
51	console.log(outputStr);
52
53	// best to gather data for at least one second for reasonable
54	// results.
55}, 2000);
56
57
58// When exiting: clear interval and print message
59process.on('SIGINT', function()
60{
61	clearInterval(myInterval);
62	myWaterFlow_obj.stopFlowCounter();
63	myWaterFlow_obj = null
64	waterFlow_lib.cleanUp();
65	waterFlow_lib = null;
66
67	console.log("Exiting");
68	process.exit(0);
69});
70