lejos.hardware.sensor.RCXThermometer Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of lejos-ev3-api Show documentation

leJOS (pronounced like the Spanish word "lejos" for "far") is a tiny Java Virtual Machine. In 2013 it was ported to the LEGO EV3 brick.

The newest version!

package lejos.hardware.sensor;

import lejos.hardware.port.LegacySensorPort;


/**
 * Lego RCX temperature sensor

 * The sensor measures both atmospheric pressure and temperature.
 * 
 * 
 * The code for this sensor has not been tested. Please report test results to
 * the  leJOS forum.
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * Supported modes
Mode name Description unit(s) Getter
Temperature Measures temperature Degree Celcius  {@link #getTemperatureMode() }
 * 
 * 
 * See  The
 *      leJOS sensor framework
 * See {@link lejos.robotics.SampleProvider leJOS conventions for
 *      SampleProviders}
 * 
 *      
 * 
 * 
 * @author Soren Hilmer
 * 
 */
public class RCXThermometer extends AnalogSensor implements SensorConstants {
    LegacySensorPort port;
    
    /**
     * Create an RCX temperature sensor object attached to the specified port.
     * @param port port, e.g. Port.S1
     */
    public RCXThermometer(LegacySensorPort port)
    {
        super(port);
        init();
    }
    
    protected void init() {
    	setModes(new SensorMode[]{ new TemperatureMode() });
    	port.setTypeAndMode(TYPE_TEMPERATURE, MODE_RAW);
    }
    
    /**
     * Return a sample provider in temperature mode
     */
    public SensorMode getTemperatureMode() {
    	return getMode(0);
    }

    private class TemperatureMode implements SensorMode { 
	@Override
	public int sampleSize() {
		return 1;
	}

	@Override
	public void fetchSample(float[] sample, int offset) {
		sample[offset] = (785-NXTRawValue(port.getPin1()))/8.0f +273.15f; // Kelvin
	}

	@Override
	public String getName() {
		return "Temperature";
	}
    }
}

Supported modes
Mode name	Description	unit(s)	Getter
Temperature	Measures temperature	Degree Celcius	{@link #getTemperatureMode() }