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Numeric Comparison Timeout

hiroki takubo
Prodigy 100 points


I want to do Numeric Comparison

I am using the simplelink_cc13x2_26x2_sdk_5_10_00_48.

Suppose the GAPBOND_PAIRING_STATE_COMPLETE event notifies with status bleTimeout  without executing GAPBondMgr_PasscodeRsp () during Numeric Comparison.

At this time, if I execute GAPBondMgr_Pair () again, blePairingTimedOut (0x1C) will be returned. How should I perform the recovery process to prevent the error from being returned from GAPBondMgr_Pair ()?

 

Best　Regards.

  • 0
    TI__Mastermind 38145 points

    Hi Hiroki,

    If this happens, you may have to restart your connection process. You might consider terminating the connection if blePairingTImedOut returns, which will let you restart the pairing process. I am not aware of any error-handling for this specific use case, but I'll have a colleague chime in too.

    Best,

    Nate

  • 0 in reply to Nathan Block
    Prodigy 100 points

    Thank you for your reply.

    I want to restart the pairing process while keeping the BLE connection, is that impossible?

    Best Regards.

  • 0 in reply to hiroki takubo
    TI__Guru** 101490 points

    Hi Hiroki-san,

    Actually, if a pairing procedure times-out, it is not allowed to initiate a new one. 

    Quoting BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 3, Part H, §3.4, "If the Security Manager Timer reaches 30 seconds, the procedure shall be considered to have failed, and the local higher layer shall be notified. No further SMP commands shall be sent over the L2CAP Security Manager Channel. A new Pairing process shall only be performed when a new physical link has been established."

    The only option I see would be to terminate the link and establish a new one.

    I hope this will help,

    Best regards,