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slotted csma/ca backoff period boundary

kenfreeM
Expert 1030 points

Other Parts Discussed in Thread: TIMAC

how to set/update csma/ca backoff period boundary in TI MAC code for slotted csma/ca

  • 0
    TI__Genius 9180 points

    Please look at "TIMAC x.x.x\Documents\API\802.15.4 MAC API.pdf" section "5.2.5 Get and Set Attributes". You should use the MAC_MIN_BE and MAC_MAX_BE attributes to control the backoff period, which will be a random value between:

    [0 – (2^Be)-1]*320uS

    Where Be = MinBe for the first backoff and increasing by 1 up to MaxBe for each consecutive backoff.

    Regards, TC.

  • 0 in reply to TopCat
    Expert 1030 points

    my question is how to check whether slotted csma/ca is properly working or not ????

  • 0
    TI__Genius 9180 points

    Yes this is working in beacon enabled networks. You will need to modify the MSA (MAC Sample App). This is described in Section "4.6 Start the device as a beacon network Pan Coordinator" and  Section "4.9 Start the device as a beacon network End Device with direct messaging support" of "Mac Sample Application - Software Design.pdf". Section "8.3 Beacon-enabled network Scan and Sync" of 802.15.4 MAC API.pdf may also be useful.

    Regards, TC.