Part Number:CC2640R2F
Hi everyone,
I am facing an issue with a connection between a custom CC2640 board and a Samsung Galaxy J3.
With most phones, once the devices connected the connection is working well, but with that one, I get a gatt error 129 on service discovery.
I sniffed the packets exchanged with a CC2540 USB dongle and the TI Packet Sniffer software. It appears that instead of the empty PDUs that are exchanged during healthy connections, the devices are exchanging L2CAP-S messages with ACK Status "Unexp. NESN", the direction of the communications being unknown by the packet sniffer.
I can send the whole packet sniffer data on request for more details.
Something else: on most phones, I sometimes get a gatt error 133 when I try to connect to my custom board, which is solved by retrying to connect a few times. I suspect the Android stack to be a huge mess, but if anyone has a fix about that, it will be most welcome.
Looking forward for some tips !
Best regards,
Robin B.