LL_FEATURE_REQ - Android App?

[Lionel Sacks]

Hi, when using a test based on the UART app, when running it a samsung all is working just great. However, I tested it on a Nexus 7 with less luck. From the Sniffer/wireshark (screen shot attached), I see the Nexus sending LL_FEATURE_REQ and, I guess, seeing nothing; gives up. At least i think that's what's going on. The Nexus also takes a long time to see the device adverts... irrespective of the advertising rate - any ideas about that as well?

Am I missing something on the nRF51 side? My soft device is S110_nRF51_8.0.0 (Id: 0x0064)

cheers,

ll_feature_req.PNG

[Torsten Robitzki]

Hi, To me it looks like, the master is not receiving an acknowlaged for it's LL_FEATURE_REQ. The next expceted sequence number in the response from the nrf51 should be the sequence number of the PDU with the LL_FEATURE_REQ plus 1 modulo 2.

cheers, Torsten

[Lionel Sacks]

Hi, Indeed - from what I can see on wireshark, I'm getting a sequence like CONNECT_REQ Master->Slave : LL_FEATURE_REQ Slave->Master: Emput PDU (ie from the nRF51). five times. and then connect fail.

I've put screen dumps in my next question, which is probably, somehow the same issue, maybe devzone.nordicsemi.com/.../