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CC2640: Occasionally peripheral miss sending Empty PDUs

Danny Chan
Intellectual 440 points

Part Number: CC2640

Is it normal for the Peripheral to occasionally miss sending Empty PDUs? I can see from my sniffer that the Central is working because it is sending its packets consistently, and the slave latency is 0. Also, what happens if I had queued up a notification into the TX buffer, is it possible for the Peripheral to miss the Central's packet and not send the notification? If so what happens to the notification. Please see below for sniffer screenshot with missed PDUs. Thanks, Danny.

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    TI__Mastermind 25035 points
    Hi,

    The notification should be queued up and sent as soon as it receives the next packet from the master. Also note that it is possible the sniffer tool also might not capture all the packets as well. The link layer should retransmit the packet if it gets missed/out of order based on the SN and NESN bits.

    Best wishes