private void startProgramming() {
mLog.append("Programming started\n");
mProgramming = true;
updateGui();
// Prepare image notification
byte[] buf = new byte[OAD_IMG_HDR_SIZE + 2 + 2];
buf[0] = Conversion.loUint16(mFileImgHdr.ver);
buf[1] = Conversion.hiUint16(mFileImgHdr.ver);
buf[2] = Conversion.loUint16(mFileImgHdr.len);
buf[3] = Conversion.hiUint16(mFileImgHdr.len);
System.arraycopy(mFileImgHdr.uid, 0, buf, 4, 4);
// Send image notification
mCharIdentify.setValue(buf);
mLeService.writeCharacteristic(mCharIdentify);
// Initialize stats
mProgInfo.reset();
// Start the packet timer
mTimer = null;
mTimer = new Timer();
mTimerTask = new ProgTimerTask();
mTimer.scheduleAtFixedRate(mTimerTask, 0, PKT_INTERVAL);
}
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
Log.d(TAG, "action: " + action);
if (BluetoothLeService.ACTION_DATA_NOTIFY.equals(action)) {
byte[] value = intent.getByteArrayExtra(BluetoothLeService.EXTRA_DATA);
String uuidStr = intent.getStringExtra(BluetoothLeService.EXTRA_UUID);
if (uuidStr.equals(mCharIdentify.getUuid().toString())) {
// Image info notification
mTargImgHdr.ver = Conversion.buildUint16(value[1], value[0]);
mTargImgHdr.imgType = ((mTargImgHdr.ver & 1) == 1) ? 'B' : 'A';
mTargImgHdr.len = Conversion.buildUint16(value[3], value[2]);
displayImageInfo(mTargImage, mTargImgHdr);
}
} else if (BluetoothLeService.ACTION_DATA_WRITE.equals(action)) {
int status =
intent.getIntExtra(BluetoothLeService.EXTRA_STATUS, BluetoothGatt.GATT_SUCCESS);
if (status != BluetoothGatt.GATT_SUCCESS) {
Log.e(TAG, "Write failed: " + status);
Toast.makeText(context, "GATT error: status=" + status, Toast.LENGTH_SHORT).show();
}
}
}
private boolean loadFile(String filepath, boolean isAsset) {
boolean fSuccess = false;
// Load binary file
try {
// Read the file raw into a buffer
InputStream stream;
if (isAsset) {
stream = getAssets().open(filepath);
} else {
File f = new File(filepath);
stream = new FileInputStream(f);
}
stream.read(mFileBuffer, 0, mFileBuffer.length);
stream.close();
} catch (IOException e) {
// Handle exceptions here
mLog.setText("File open failed: " + filepath + "\n");
return false;
}
// Show image info
mFileImgHdr.ver = Conversion.buildUint16(mFileBuffer[5], mFileBuffer[4]);
mFileImgHdr.len = Conversion.buildUint16(mFileBuffer[7], mFileBuffer[6]);
mFileImgHdr.imgType = ((mFileImgHdr.ver & 1) == 1) ? 'B' : 'A';
System.arraycopy(mFileBuffer, 8, mFileImgHdr.uid, 0, 4);
displayImageInfo(mFileImage, mFileImgHdr);
// Verify image types
boolean ready = mFileImgHdr.imgType != mTargImgHdr.imgType;
int resid = ready ? R.style.dataStyle1 : R.style.dataStyle2;
mFileImage.setTextAppearance(this, resid);
// Enable programming button only if image types differ
mBtnStart.setEnabled(ready);
// Expected duration
mEstDuration = ((PKT_INTERVAL * mFileImgHdr.len * 4) / OAD_BLOCK_SIZE) / 1000;
displayStats();
// Log
mLog.setText("Image " + mFileImgHdr.imgType + " selected.\n");
mLog.append(ready ? "Ready to program device!\n" : "Incompatible image, select alternative!\n");
updateGui();
return fSuccess;
}
private void onBlockTimer() {
if (mProgInfo.iBlocks < mProgInfo.nBlocks) {
mProgramming = true;
// Prepare block
mOadBuffer[0] = Conversion.loUint16(mProgInfo.iBlocks);
mOadBuffer[1] = Conversion.hiUint16(mProgInfo.iBlocks);
System.arraycopy(mFileBuffer, mProgInfo.iBytes, mOadBuffer, 2, OAD_BLOCK_SIZE);
// Send block
mCharBlock.setValue(mOadBuffer);
boolean success = mLeService.writeCharacteristic(mCharBlock);
if (success) {
// Update stats
mProgInfo.iBlocks++;
mProgInfo.iBytes += OAD_BLOCK_SIZE;
mProgressBar.setProgress((mProgInfo.iBlocks * 100) / mProgInfo.nBlocks);
} else {
// Check if the device has been prematurely disconnected
if (BluetoothLeService.getBtGatt() == null) mProgramming = false;
}
} else {
mProgramming = false;
}
mProgInfo.iTimeElapsed += PKT_INTERVAL;
if (!mProgramming) {
runOnUiThread(
new Runnable() {
public void run() {
displayStats();
stopProgramming();
}
});
}
}
private void setConnectionParameters() {
// Make sure connection interval is long enough for OAD
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);
boolean ok = mLeService.writeCharacteristic(mCharConnReq);
if (ok) ok = mLeService.waitIdle(GATT_WRITE_TIMEOUT);
}