WiFi Rev2 stops communicating after time

[Joniras]

I am working on an Arduino Uno WiFi Rev2 with the Nina-FW 1.4.1 loaded.

I am experiencing the following pattern every time i start the arduino and start the code (the example Peripheral -> ButtonLED with debug enabled):

1. I start the Arduino (with Serial Monitor enabled)
2. The connection with the central is established
3. After some time (without furhter interaction) i only see HCI COMMAND TX -> XXXX and no more HCI EVENT RX <- XXXX
4. The connected() method still delivers true, disconnect() does return false
5. The Central gets disconnected and can no longer initiate a connection (Arduino is not visible anymore)

I did some digging and found out that the HCITransport appearently delivers a message that can not be understood (else block in HCI.ccp:153). There it prints some cryptic bytes to the console (every time the same), i attached it in the txt File. After that message the bluetooth no longer works (until i reset the arduino).

before disconnect (rssi()):

• HCI COMMAND TX -> 010514020000
• HCI EVENT RX <- 040E07050514000000BE

[byteCode]

after that (advertising):

• HCI COMMAND TX -> 010A200100
• HCI COMMAND TX -> 0106200FA000A0000000000000000000000700
• (and no return message)

Can anyone give an explanation on how to restore the bluetooth connection or catch the error somehow?

Edit: I managed to "restore Bluetooth Connectivity" by calling the reset-function. But i would prefer a cleaner solution.

debugPrint_hexBytes.txt