Android Open Source - android-weather-station Weather Logger

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Back to project page android-weather-station.

License

The source code is released under:

Apache License

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Java Source Code

package de.grundid.weather.sensor;
/*from   w w  w  .j a v a2  s .co  m*/
import de.grundid.weather.utils.Utils;
import android.util.Log;

public class WeatherLogger {

  private final byte PROT_STARTBYTE = 0x02;
  private final byte PROT_ENDBYTE = 0x03;
  private static final int BUFFER_SIZE = 8; // muss 8 sein
  private byte[] message = new byte[BUFFER_SIZE];
  private byte[] completeMsg = new byte[8];
  private int offset = 0;
  private SensorListener sensorListener;

  public WeatherLogger(SensorListener sensorListener) {
    this.sensorListener = sensorListener;
  }

  private void saveData(byte[] message) {
    try {
      Sensor sensor = SensorFactory.createSensor(message);
      sensorListener.onSensorData(sensor);
    }
    catch (Exception e) {
      Log.e("WEATHER", e.getMessage(), e);
    }
  }

  public void readData(byte[] buffer, int readData) {
    try {
      Log.d("WEATHER", "Data read: " + readData + " | " + Utils.bufferToString(buffer, readData));
      for (int x = 0; x < readData; x++) {
        message[offset] = buffer[x];
        if ((message[(offset + 1) % BUFFER_SIZE] == PROT_STARTBYTE) && (message[offset] == PROT_ENDBYTE)) {
          for (int i = 0; i < BUFFER_SIZE; i++) {
            completeMsg[i] = message[(offset + i + 1) % BUFFER_SIZE];
          }
          saveData(completeMsg);
          message[offset] = 0x00;
        }
        offset = ++offset % BUFFER_SIZE;
      }
    }
    catch (Exception e) {
      Log.e("WEATHER", e.getMessage(), e);
    }
  }
};

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