Connect a Laptop with Windows to Peripheral UART example

[StefiNR]

Sure, my question is very stupid, but after one day I found nothing to explain the principle of the situation, I decided to ask.

I have a laptop with built-in Bluetooth 5.2 and Windows 11. It runs a terminal testing program.

I have nRF5340 DK with the example Peripheral UART installed (nRF Connect SDK1.8.0). The board works normally, I tested it with a phone with Android and nRF Connect for Mobile. Everything is working fine. The board is connected to a desktop computer on which a terminal program is running and connected to COM port ( not USB).

Windows (laptop), sees the board. After pressing adding device (on Win), the LED on the board (connected) lights up for 1 second, Windows thinks about 5 seconds, and says try again. I imagine that it will connect to the board, and a window will appear to install a serial port to which I can connect through the terminal program. No PIN display window appears. I tried to quickly press button 1, possibly to confirm, nothing. I can transmit data over the phone without the board being BONDED. Let me just say that I've been doing Nordic for 6 months, and I've learned some things. But here I can't even imagine what should happen. Google didn't help either. Does anything else need to be installed on the board?

In the final version, it should be a remote device to which with any laptop with Bluetooth 5.2, to be able to connect and through a terminal program to exchange data via serial port.

[Simonr]

Hi Stefan

Security level 1 is specified as "No encryption and no authentication". Error 9 is unfortunately "BT_SECURITY_ERR_UNSPECIFIED" which is defined as "pairing failed but the exact reason could not be specified".

If you'd like to disable numeric comparison and use the passkey instead for example, you can try something like this:

static struct bt_conn_auth_cb conn_auth_callbacks = {
    .passkey_display = auth_passkey_display,
    //.passkey_confirm = auth_passkey_confirm, // disable numeric comparison
    .cancel = auth_cancel,
    .pairing_complete = pairing_complete,
    .pairing_failed = pairing_failed
};

Best regards,

Simon

[StefiNR]

The Windows PIN window appears with a disabled confirmation button, and so on indefinitely. They do not connect. 

no_keyi.zip