I2cWriteAction.java

package com.uxxu.konashi.lib.action;

import android.bluetooth.BluetoothGattService;

import com.uxxu.konashi.lib.Konashi;
import com.uxxu.konashi.lib.KonashiErrorType;
import com.uxxu.konashi.lib.KonashiUUID;
import com.uxxu.konashi.lib.store.I2cStore;
import com.uxxu.konashi.lib.util.I2cUtils;

import java.util.UUID;

import info.izumin.android.bletia.BletiaErrorType;

/**
 * Created by izumin on 9/21/15.
 */
public class I2cWriteAction extends I2cAction {

    private static final UUID UUID = KonashiUUID.I2C_WRITE_UUID;

    private final byte mAddress;
    private final byte[] mData;

    public I2cWriteAction(BluetoothGattService service, byte address, byte[] data, I2cStore store) {
        super(service, UUID, store, false);
        mAddress = address;
        mData = data;
    }

    @Override
    protected void setValue() {
        int size = (mData.length < Konashi.I2C_DATA_MAX_LENGTH) ? mData.length + 2 : Konashi.I2C_MAX_VALUE_SIZE;
        byte[] value = new byte[size];
        value[0] = (byte) (size - 1);
        value[1] = (byte) ((mAddress << 1) & 0xfe);
        System.arraycopy(mData, 0, value, 2, size - 2);
        getCharacteristic().setValue(value);
    }

    @Override
    protected BletiaErrorType validate() {
        if(I2cUtils.isTooShortDataLength(mData.length)) return KonashiErrorType.DATA_SIZE_TOO_SHORT;
        else if(I2cUtils.isTooLongDataLength(mData.length)) return KonashiErrorType.DATA_SIZE_TOO_LONG;
        else return KonashiErrorType.NO_ERROR;
    }
}