Get G-Sensor Data

VIM4 board has integrated G-Sensor module. Goto Settings –> Khadas settings –> G-Sensor data to view the acceleration of X, Y and Z.

Android APP get Gsensor Data

There are the following steps for APP to obtain G-Sensor data:

  1. Get Sensor service : getSystemService.
  2. Get G-Sensor object : getDefaultSensor.
  3. Register data listener : registerListener.

The reference code is as follows:

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import android.app.Activity;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.hardware.SensorEvent;
import android.os.Bundle;
import android.widget.TextView;

public class Gsensor_Preference extends Activity implements SensorEventListener {

    private SensorManager mSensorManager;
    private TextView mTextView_x;
    private TextView mTextView_y;
    private TextView mTextView_z;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.gsensor);

        //get Sensor service
        mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        //get G-Sensor object
        Sensor gsensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        //register data listener, callback onSensorChanged method when has data
        mSensorManager.registerListener(this, gsensor, SensorManager.SENSOR_DELAY_NORMAL);

        mTextView_x = findViewById(R.id.textView_x);
        mTextView_y = findViewById(R.id.textView_y);
        mTextView_z = findViewById(R.id.textView_z);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mSensorManager.unregisterListener(this);
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        if(event.sensor == null)
            return ;
        //Judge whether the data type is G-Sensor
        if(event.sensor.getType() == Sensor.TYPE_ACCELEROMETER){
            //Get data
            mTextView_x.setText("X: " + event.values[0] + " m/s²");
            mTextView_y.setText("Y: " + event.values[1] + " m/s²");
            mTextView_z.setText("Z: " + event.values[2] + " m/s²");
        }
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {

    }
}
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