public ProgramInfo(byte[] mImage, SensorTagDevice device) {
// this.mFileImgHdr = mFileImgHdr;
mFileImgHdr = new ImageHdr(mImage);
mFileBuffer = mImage;
this.mBtLeService = BluetoothLeService.getInstance();
this.deviceAddress = device.getAddress();
BluetoothGattService mOadService = device.getOadService();
BluetoothGattService mConnControlService = device.getConnControlService();
// Characteristics list
List<BluetoothGattCharacteristic> mCharListOad = mOadService.getCharacteristics();
List<BluetoothGattCharacteristic> mCharListCc = mConnControlService.getCharacteristics();
mServiceOk = mCharListOad.size() == 2 && mCharListCc.size() >= 3;
if (mServiceOk) {
mCharIdentify = mCharListOad.get(0);
mCharBlock = mCharListOad.get(1);
mCharBlock.setWriteType(BluetoothGattCharacteristic.WRITE_TYPE_NO_RESPONSE);
mCharConnReq = mCharListCc.get(1);
mBtLeService.setCharacteristicNotification(deviceAddress, mCharBlock, true);
if (Build.VERSION.SDK_INT >= 21) {
mBtLeService.requestConnectionPriority(
deviceAddress, BluetoothGatt.CONNECTION_PRIORITY_HIGH);
}
setConnectionParameters();
}
}
public void stopProgramming() {
mTimer.cancel();
mTimer.purge();
mProgramming = false;
mBtLeService.setCharacteristicNotification(deviceAddress, mCharBlock, false);
}
/**
* Make sure connection interval is long enough for OAD (Android default connection interval is
* 7.5 ms)
*/
private void setConnectionParameters() {
byte[] value = {
Conversion.loUint16(OAD_CONN_INTERVAL),
Conversion.hiUint16(OAD_CONN_INTERVAL),
Conversion.loUint16(OAD_CONN_INTERVAL),
Conversion.hiUint16(OAD_CONN_INTERVAL),
0,
0,
Conversion.loUint16(OAD_SUPERVISION_TIMEOUT),
Conversion.hiUint16(OAD_SUPERVISION_TIMEOUT)
};
mCharConnReq.setValue(value);
mBtLeService.writeCharacteristic(deviceAddress, mCharConnReq);
}
public void startProgramming() {
mProgramming = true;
packetsSent = 0;
mCharIdentify.setValue(mFileImgHdr.getRequest());
mBtLeService.writeCharacteristic(deviceAddress, mCharIdentify);
this.reset();
System.out.println("total blocks: " + nBlocks);
mTimer = new Timer();
mTimer.scheduleAtFixedRate(
new TimerTask() {
@Override
public void run() {
iTimeElapsed += TIMER_INTERVAL;
}
},
0,
TIMER_INTERVAL);
}
public void programBlock() {
if (!mProgramming) return;
if (iBlocks < nBlocks) {
mProgramming = true;
// Prepare block
mOadBuffer[0] = Conversion.loUint16((short) iBlocks);
mOadBuffer[1] = Conversion.hiUint16((short) iBlocks);
System.arraycopy(mFileBuffer, iBytes, mOadBuffer, 2, OAD_BLOCK_SIZE);
// Send block
mCharBlock.setValue(mOadBuffer);
boolean success = mBtLeService.writeCharacteristicNonBlock(deviceAddress, mCharBlock);
Log.d(TAG, "Sent block : " + iBlocks + " to [" + deviceAddress + "]");
if (success) {
// Update stats
packetsSent++;
iBlocks++;
iBytes += OAD_BLOCK_SIZE;
if (isComplete()) {
Log.d(TAG, "OAD Completed on [" + deviceAddress + "]");
}
} else {
mProgramming = false;
Log.e(TAG, "GATT writeCharacteristic failed on [" + deviceAddress + "]");
}
} else {
mProgramming = false;
}
if (!mProgramming) {
stopProgramming();
}
}
