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How to respond to a request LL_Feature_Req ?

Mars Chen
Prodigy 210 points
Other Parts Discussed in Thread: CC2541

Hi,

Currently doing blood glucose meters, encountered a problem, central (Android APP) will send LL_Feature_Req,

but peripheral (CC2541) does not have Response...

How can i modify firmware to response this request, just like following figure.

Below is the our customer original solution, use packet sniffer to record.

Next status will enter into an encrypted

Chip:CC2541, Project:GlucoseSensor, Version:1.4.0

  • 0
    TI__Guru 57865 points

    Hi Mars,

    It looks like the CC2541 is to fast with sending the pairing request, so that the LL_Feature_Req is ignored. It should not ignore it. Could you try to disable the security for now just to see if that solves the issue?

    This is done by default (so I assume they have changed the code?)

    // Default GAP pairing mode
    #define DEFAULT_PAIRING_MODE GAPBOND_PAIRING_MODE_WAIT_FOR_REQ

    Maybe you can change so that the Central device initiates the security instead?

    Best Regards

    Joakim