Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import android.bluetooth.BluetoothGattCharacteristic;
import static android.bluetooth.BluetoothGattCharacteristic.FORMAT_SINT8;
import static android.bluetooth.BluetoothGattCharacteristic.FORMAT_UINT8;

public class Main {
    /**
     * Gyroscope, Magnetometer, Barometer, IR temperature
     * all store 16 bit two's complement values in the awkward format
     * LSB MSB, which cannot be directly parsed as getIntValue(FORMAT_SINT16, offset)
     * because the bytes are stored in the "wrong" direction.
     *
     * This function extracts these 16 bit two's complement values.
     * */
    public static Integer shortSignedAtOffset(BluetoothGattCharacteristic c, int offset) {
        Integer lowerByte = c.getIntValue(FORMAT_UINT8, offset);
        if (lowerByte == null)
            return 0;
        Integer upperByte = c.getIntValue(FORMAT_SINT8, offset + 1); // Note: interpret MSB as signed.
        if (upperByte == null)
            return 0;

        return (upperByte << 8) + lowerByte;
    }
}