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67 lines
2.2 KiB
JavaScript
67 lines
2.2 KiB
JavaScript
/*
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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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var waterFlow_lib = require('jsupm_grovewfs');
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// Instantiate a Grove Water Flow Sensor on digital pin D2
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var myWaterFlow_obj = new waterFlow_lib.GroveWFS(2);
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// set the flow counter to 0 and start counting
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myWaterFlow_obj.clearFlowCounter();
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myWaterFlow_obj.startFlowCounter();
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var millis, flowCount, fr;
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var myInterval = setInterval(function()
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{
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// we grab these (millis and flowCount) just for display
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// purposes in this example
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millis = myWaterFlow_obj.getMillis();
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flowCount = myWaterFlow_obj.flowCounter();
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fr = myWaterFlow_obj.flowRate();
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// output milliseconds passed, flow count, and computed flow rate
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outputStr = "Millis: " + millis + " Flow Count: " + flowCount +
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" Flow Rate: " + fr + " LPM";
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console.log(outputStr);
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// best to gather data for at least one second for reasonable
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// results.
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}, 2000);
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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(myInterval);
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myWaterFlow_obj.stopFlowCounter();
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myWaterFlow_obj = null
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waterFlow_lib.cleanUp();
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waterFlow_lib = null;
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console.log("Exiting");
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process.exit(0);
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});
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