I'm working on a DFU OTA (device firmware update on the air).
To do it, I must connect the device, then send a command to order the device to switch to bootloader mode. After this command the device reboot, thus connection is lost. Just after this state if I try to reconnect with
rxBledevice
?.establishConnection(false)
?.subscribe({/**/},{/**/})
raise the error BleAlreadyConnectedException
Then, if I send any command to the device, for example with
rxBleConnection
?.writeCharacteristic(UUID, ba)
?.subscribe({/**/},{/**/})
raise the error, BleDisconnectedException.
I try to Dispose the connection observer but nothing changed. The only way (not acceptable) is to restart the app after the BleDevice reboot and disconnect.
If it can help, I also got these logs:
E/BLE: write control OTA failed : com.polidea.rxandroidble2.exceptions.BleGattCallbackTimeoutException: GATT exception from MAC address 00:0B:57:4C:6C:9B, with type BleGattOperation{description='CHARACTERISTIC_WRITE'}
D/BluetoothGatt: onClientConnectionState() - status=22 clientIf=7 device=00:0B:57:4C:6C:XX
E/BLE: error connection BLE Disconnected from 00:0B:57:4C:6C:9B with status 22 (UNKNOWN)
Do you have an idea of what I'm doing wrong?
Thank you.