Python example on BlueZ with nrf52840 stop connection after 30 seconds

[jean-marc]

Using the BlueZ Python example in BlueZ /test/example-gatt-server with the dongle nf52840 will fail with "Failed to call gattsExchangeMtuReply (NRF_ERROR_INVALID_PARAM)"

and then disconnect after 30 seconds.

With the phone it will not connect and stop connection after 30 seconds.

Using nRF Connect.

With other means it is connecting OK.

What could be wrong with Nordic?

[jean-marc]

OK I think we are looking at the right place. I will have to figure out when (probably on the connection time) the BlueZ app does the MTU request or related command. Anyway thank you for your answer.

[Håkon Alseth]

The bug on our side is that we seem to echo back the same MTU, ie 517 bytes, in the MTU REPLY. The developers are looking into if this originates from the PC application or the firmware running on the nRF side.

Kind regards,

Håkon