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CC2652P: issue of ZDP Parent_annce_rsp command

Aries Lord
Genius 5250 points
Part Number: CC2652P
Other Parts Discussed in Thread: Z-STACK

Both Parent_annce and Parent_annce_rsp are sent by broadcasting. As we know, the max payload of APS-broadcasting is 82 bytes. But the max children of Parent_annce_rsp command in z-stack（SDK6.10） is 10, and it will cost 83 bytes of APS payload.

  • 0
    TI__Guru**** 202356 points

    Hi Aries,

    Thank you for reporting this.  The Parent_annce has a maximum of 82 bytes which is within the ZDP_BUF_SZ limit, however Parent_annce_rsp adds an additional byte for the return status.  I will report this to the Software Development Team, meanwhile although it is not recommended to increase ZDP_BUF_SZ as from your prior E2E thread involvement you can decrease MAX_PARENT_ANNCE_CHILD to 9.  The ideal solution as it stands is to not broadcast the Parent_annce_rsp.

    Regards,
    Ryan

  • 0 in reply to Ryan Brown1
    Genius 5250 points

    But I think Zigbee Alliance has not designed this command very well. The member "Number Of Children" is unnecessary. The Number Of Children can be calculate from the payload size. That can make Parent_annce_rsp take 10 Children