package org.sunspotworld.demo;

import com.sun.spot.sensorboard.EDemoBoard;
import com.sun.spot.sensorboard.io.IIOPin;
import com.sun.spot.sensorboard.io.IInputPin;
import com.sun.spot.sensorboard.io.IOutputPin;
import com.sun.spot.sensorboard.io.IScalarInput;
import com.sun.spot.sensorboard.io.ITemperatureInput;
import com.sun.spot.util.Utils;
import java.io.IOException;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class SunSpotApplication extends MIDlet {

    private static final boolean[] MEASURE_TEMPERATURE_COMMAND = {false, false, false, true, true};
    private static final boolean[] MEASURE_HUMIDITY_COMMAND = {false, false, true, false, true};
    private IOutputPin sck;
    private IIOPin data;

    protected void startApp() throws MIDletStateChangeException {

        EDemoBoard board = EDemoBoard.getInstance();
        sck = board.bindOutputPin(EDemoBoard.D0);
        data = board.bindIOPin(EDemoBoard.D1);

        while (true) {

            int SOrh = getSensorOutputForRelativeHumidity();
            int SOt = getSensorOutputForTemperature();

            double celsiusTemperature = -39.60 + 0.01 * SOt;
            double RHlinear = -4 + 0.0405 * SOrh - 2.8 * 10e-6 * SOrh;

            double RHtrue = (celsiusTemperature - 25) * (0.01 + 0.00008 * SOrh) + RHlinear;

            System.out.println("SOrh = " + SOrh + ", SOt = " + SOt + ", TºC = " + celsiusTemperature + ", RHlinear = " + RHlinear);
            System.out.println("RHtrue = " + RHtrue);

            Utils.sleep(5000);
            System.out.println();
        }
    }

    protected void pauseApp() {
    }

    protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
    }

    public void startTransmission() {
        data.setAsOutput(true);
        data.setHigh();
        Utils.sleep(10);
        sck.setHigh();
        data.setLow();
        sck.setLow();
        Utils.sleep(10);
        sck.setHigh();
        data.setHigh();
        sck.setLow();
    }

    private void sendAddress() {
        data.setAsOutput(true);
        data.setLow();
        Utils.sleep(10);
        sck.setHigh();
        sck.setLow();
        Utils.sleep(10);
        sck.setHigh();
        sck.setLow();
        Utils.sleep(10);
        sck.setHigh();
        sck.setLow();
    }

    private void sendCommand(boolean[] commandBits) {
        data.setAsOutput(true);
        for (int i = 0; i < commandBits.length; i++) {
            data.setHigh(commandBits[i]);
            Utils.sleep(10);
            sck.setHigh();
            sck.setLow();
        }

        data.setAsOutput(false);
        while (!data.isLow()) {
            Utils.sleep(10);
        }
        sck.setHigh();
        sck.setLow();
    }

    private int getMeasurementResult() {
        data.setAsOutput(false);
        while (!data.isLow()) {
            Utils.sleep(60);
        }

        int r = 0;
        for (int i = 0; i < 16; i++) {
            boolean b = data.isHigh();
            r = (r << 1) | (b ? 1 : 0);
            sck.setHigh();
            sck.setLow();
        }
        return r;
    }

    private void endTransmission() {
        data.setAsOutput(true);
        data.setLow();
        Utils.sleep(10);
        sck.setHigh();
        sck.setLow();
    }

    private int getSensorOutput(boolean[] command) {
        startTransmission();
        sendAddress();
        sendCommand(command);
        int measure = getMeasurementResult();
        endTransmission();
        return measure;
    }

    public int getSensorOutputForRelativeHumidity() {
        return getSensorOutput(MEASURE_HUMIDITY_COMMAND);
    }

    public int getSensorOutputForTemperature() {
        return getSensorOutput(MEASURE_TEMPERATURE_COMMAND);
    }
}