1765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang/* 2765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com> 3765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * Copyright (c) 2014 Intel Corporation. 4765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * 5765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * Permission is hereby granted, free of charge, to any person obtaining 6765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * a copy of this software and associated documentation files (the 7765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * "Software"), to deal in the Software without restriction, including 8765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * without limitation the rights to use, copy, modify, merge, publish, 9765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * distribute, sublicense, and/or sell copies of the Software, and to 10765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * permit persons to whom the Software is furnished to do so, subject to 11765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * the following conditions: 12765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * 13765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * The above copyright notice and this permission notice shall be 14765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * included in all copies or substantial portions of the Software. 15765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * 16765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 17765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 20765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 21765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 22765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang */ 24765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang 25765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhangvar upmTP401 = require('jsupm_gas'); 26765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang//var time = require('sleep'); 27765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang 28765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang//give a qualitative meaning to the value from the sensor 29765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhangfunction airQuality(value) 30765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang{ 31765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang if(value < 50) return "Fresh Air"; 32765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang if(value < 200) return "Normal Indoor Air"; 33765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang if(value < 400) return "Low Pollution"; 34765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang if(value < 600) return "High Pollution - Action Recommended"; 35765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang return "Very High Pollution - Take Action Immediately"; 36765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang} 37765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang 38765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhangfunction loop() 39765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang{ 40765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang //read values (consecutive reads might vary slightly) 41765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang var value = airSensor.getSample(); 42765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang var ppm = airSensor.getPPM(); 43765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang 44765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang //write the sensor values to the console 45765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang console.log("raw: " + value + " ppm: " + (" " + ppm.toFixed(2)).substring(-5, 5) + " " + airQuality(value)); 46765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang 47765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang //wait 2.5 s then call function again 48765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang setTimeout(loop, 2500); 49765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang} 50765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang 51765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang//setup sensor on Analog pin #0 (A0) 52765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhangvar airSensor = new upmTP401.TP401(0); 53765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang 54765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang//warm up sensor 55765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhangconsole.log("Sensor is warming up for 3 minutes.."); 56765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhangvar i = 1; 57765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang 58765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang//print a message every passing minute 59765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhangvar waiting = setInterval(function() { 60765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang console.log(i++ + " minute(s) passed."); 61765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang if(i == 3) clearInterval(waiting); 62765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang }, 60000); 63765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang 64765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang//start loop in 3 minutes 65765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun ZhangsetTimeout(function(){ 66765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang console.log("Sensor is ready!"); 67765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang loop(); 68765adb95dc941c32690d6c43bc08b9d07d197fcbJianxun Zhang }, 180000); 69