upm/examples/java/TP401Sample.java

/*
 * Author: Stefan Andritoiu <stefan.andritoiu@intel.com>
 * Copyright (c) 2015 Intel Corporation.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

public class TP401Sample{
	static {
		try {
			System.loadLibrary("javaupm_gas");
		}catch (UnsatisfiedLinkError e) {
			System.err.println("error in loading native library");
			System.exit(-1);
		}
	}
	
	private static String airQuality(int value){
		if(value < 50) return "Fresh Air";
		if(value < 200) return "Normal Indoor Air";
		if(value < 400) return "Low Pollution";
		if(value < 600) return "High Pollution - Action Recommended";
		return "Very High Pollution - Take Action Immediately";
	}
	
	public static void main(String[] args) throws InterruptedException {
		//! [Interesting]
        // Instantiate new grove air quality sensor on analog pin A0
		upm_gas.TP401 airSensor = new upm_gas.TP401(0);
		
		System.out.println(airSensor.name());

		System.out.println("Heating sensor for 3 minutes...");
		// wait 3 minutes for sensor to warm up
		for(int i = 0; i < 3; i++) {
	    	if(i != 0)
	    		System.out.println("Please wait, " + i + " minute(s) passed..");
	    	Thread.sleep(60000);
	     }
		System.out.println( "Sensor ready!");
		
		while(true){
			int value = airSensor.getSample();	// Read raw value
			float ppm = airSensor.getPPM();		// Read CO ppm (can vary slightly from previous read)
			
			System.out.println("raw: " + value + " ppm: " + ppm + "  " + airQuality(value)  );
			
			Thread.sleep(100);
		}
        //! [Interesting]
	}
	

}