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CC2530: MAX_NODE_DEPTH

qd zhang
Prodigy 80 points
Part Number: CC2530
Other Parts Discussed in Thread: Z-STACK

In order to allow only one router to be connected to the Zigbee coordinator without any child nodes, I attempted the following changes, but more than one router node still joined the network. What should I do?

result:

  • 0
    TI__Guru**** 218887 points

    Hi qd,

    What Z-Stack version are you using?  Possible options include:

    • Immediately close the network after the device has joined, and do not re-open it
    • Modify NWK_MAX_DEVICE_LIST/NWK_MAX_ADDRESSES in nwk_globals.h
    • Set ZDSECMGR_TC_DEVICE_MAX in ZDSecMgr.h
    • Use install codes
    • Join ZEDs instead
    • Modify the joining ZRs to not allow more than one neighbor (ZC)
    • Request additional devices to leave the network one the Device Announce is detected.

    Regards,
    Ryan

  • 0 in reply to Ryan Brown1
    Prodigy 80 points

    Hello Ryan,

    in the screenshot I am using Z-Stack 2.5.1a, I just want to test this feature. In fact, I plan to use ZNP + host to implement a system where each layer can only connect to three routing devices, with a maximum of three layers. The coordinator will then send a message to its three routing devices, each of which will select one router to send instructions to the three routing devices on the third layer (different parent nodes), turning them into coordinators and creating the next network.

    This is just my immature idea, do you think it's feasible?

  • 0 in reply to qd zhang
    TI__Guru**** 218887 points

    As this Z-Stack version has been deprecated for many years and is no longer on https://www.ti.com/tool/Z-STACK-ARCHIVE, it is increasingly difficult to support and I would implore you to consider migrating to Z-Stack 3.0.2 for your evaluation.

    qd zhang said:
    I plan to use ZNP + host to implement a system where each layer can only connect to three routing devices, with a maximum of three layers

    Such network setup should be achievable given the correct Z-Stack configuration.

    qd zhang said:
    send instructions to the three routing devices on the third layer (different parent nodes), turning them into coordinators and creating the next network.

    This is not scoped within the Zigbee Specification.  These routers would need to send a Leave Request to the original network and clear its network information (factory reset) in order to re-start as a new coordinator.  It can be achieved in theory but will require further application development.

    Regards,
    Ryan

  • 0 in reply to Ryan Brown1
    Prodigy 80 points

    Thank you for your answer, I will give it a try.