@Override
protected void onResume() {
super.onResume();
mSerialDevice = UsbSerialProber.acquire(mUsbManager);
Debug.d(TAG, "Resumed, mSerialDevice=" + mSerialDevice);
if (mSerialDevice == null) {
Debug.i(TAG, "No serial device.");
mTextViewCmbsConnectedAns.setText(R.string.no);
mTextViewHanConnectedDeviceAns.setText(R.string.not_available);
mHanDeviceLinkedList.clear();
updateHanDeviceTable();
updateLedStatus();
} else {
try {
mSerialDevice.open();
mTextViewCmbsConnectedAns.setText(R.string.yes);
} catch (IOException e) {
Debug.e(TAG, "Error setting up device: " + e.getMessage());
mTextViewCmbsConnectedAns.setText(R.string.no);
mTextViewHanConnectedDeviceAns.setText(R.string.not_available);
mHanDeviceLinkedList.clear();
updateHanDeviceTable();
updateLedStatus();
try {
mSerialDevice.close();
} catch (IOException e2) {
// Ignore.
}
mSerialDevice = null;
return;
}
Debug.d(TAG, "Serial device: " + mSerialDevice);
}
onDeviceStateChange();
}
private void sendPacket(byte[] pkt) {
if (mSerialDevice != null) {
try {
mSerialDevice.write(pkt, 1000);
} catch (IOException e) {
e.printStackTrace();
}
}
}
@Override
protected void onPause() {
super.onPause();
stopIoManager();
if (mSerialDevice != null) {
try {
mSerialDevice.close();
} catch (IOException e) {
// Ignore.
}
mSerialDevice = null;
}
}