server not responding to LL_ENC_REQ

[RMatthew]

I have ported the keyboard example code and integrated it with another set of services. However I don't see the device responding to an LL_ENC_REQ. I'm not sure what I can check to see if my configuration is off or not. I am using an S110 soft device and the corresponding keyboard example code, I've been trying to solve this problem for quite a while but am not making any headway. What are the configuration settings that affect this.

thanks

[RMatthew]

www.nordicsemi.com/.../nRF51-DK

[Kenneth]

Is it nRF51 SDK v7,v8, v9, v10...

Best regards,
Kenneth

[RMatthew]

the soft device is s110 v8

[Kenneth]

The typical message sequence chart (MSC) is shown here:
http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s110.api.v8.0.0%2Fgroup___b_l_e___g_a_p___p_e_r_i_p_h___e_n_c___m_s_c.html 

The MSC show 3 different ways of responding to the BLE_GAP_EVT_SEC_INFO_REQUEST.

In your case it may seem as the peripheral device have lost encryption keys, while central device still have encryption keys. The only way to recover from this situation is to re-bond, for instance by removing the peripheral device in Windows and then re-bond again.

[RMatthew]

thanks, I'll take a look

[RMatthew]

there are times I get an LL_ENC_RSP but in wireshark it says the sequence number is wrong.

also are there MSC's for SCAN_REQ and CONNECT_REQ, I couldn't find them

actually the master sends me an LL_VERSION_IND and the nrf replies with LL_VERSION_IND but the sequence number is wrong on those as well, all 10 of them

[Kenneth]

Can you upload a sniffer trace and possible a description/screenshot of the frames (with invalid sequence numbers) that are wrong?

Kenneth