Disconnection HCIevent eventCode=0x0A

[Locky]

Hi all,

I was testing with a new nRF51 Dongle recently and am finding that it disconnected from any peripheral after 15-18 seconds. Generally a little while after a Connection Parameter update. I know my Connection Parameters are acceptable as the same peripherals connect and maintain fine on iPhone and Android phones. I'm curious as to why the nRF51 Dongle would behave this way?

I've tried re-flashing it, still have the same problem. Event tested with an old Ti peripheral I'd designed. But I can't seem to track this one down. Thanks in advanced for the help.

[Locky]

I appears to be isolated this one particular nRF51 Dongle. I've tried re-flashing the firmware on it several times, but the Dongle always stops responding after a Connection Parameter Update Request from my peripheral. I have another nRF51 dongle which does not exhibit this issue:

Faulty nRF51 Dongle PCA10000 V2.2.0 2014.39 N51822QFAAG01407AT

Working nRF51 Dongle PCA10000 V2.2.0 2014.14 N51822QFAAG01342AA

I can see on my peripheral that it keeps listening for the connection event from the Dongle which never comes, and the connection is then dropped. What is concerning is I also seem to get hard faults on my eval board as while setting initial connection parameters in conn_params_init(). This eval board has a similar IC Version: N51822QFAAG01412BN. In both cases I'm having issues with 2014 chips during connection parameter setting or receiving. I haven't found any mention of this issue in the PAN. Any advise?

[Asbjørn]

This sounds very strange, especially since it's related to a specific dongle. May I ask you to do a sniffer trace on the dongle that's not working to see if there's anything sensible in there that could identify the cause. Are you able to use the dongle for other purposes, for example a code example with a softdevice?

[awneil]

So what does "HCIevent eventCode=0x0A" actually mean?