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How to obtain data of PANID and CHANNEL that are being used.

John Xu
Prodigy 220 points
Other Parts Discussed in Thread: Z-STACK, CC2530

Hi,

 

I am new to Ti Z-Stack.  I start of writing a simple application:

1.  I set ZCD_NV_PANID to be 0xFFFF, which means dynamically create a PANID.

2.  I set ZCD_NV_CHANLIST to include all channels, which means I want the device to scan all channels to find the best one.

3.  I set ZCD_NV_APS_USE_EXT_PANID to be a valid extended id.

4.  I set ZCD_NV_LOGICAL_TYPE to be coordinator to start the network.

5.  I start the network by calling zb_StartRequest()

6.  Network is started successfully and zb_StartConfirm is called.

Now my question is how can I find out what PANID that the network is using and which Channel it is on??

Thanks

John

  • 0
    Guru 735685 points

    Hi John,

    Try to check zgConfigPANID, zgApsUseExtendedPANID, and zgDefaultChannelList after your ZB network is composed.

    Regards!

    YK Chen

  • 0 in reply to YiKai Chen
    Prodigy 220 points

    Hi,

    In zb_StartConfirm() function, I checked those values: zgConfigPANID, zgApsUseExtendedPANID, and zgDefaultChannelList.  They are the same values as what I set to NV.

    For example, zgConfigPANID is 0xFFFF, and zgDefaultChannelList is 0x7FFF800.  They do not tell me what channel and PANID the device picks for the network...

    Did I check them in the wrong function? 

    I need to know after CC2530 successfully starts the network, what channel and PANID it picks...

    Please help!

    Thanks

    John

  • 0 in reply to John Xu
    Guru 735685 points

    Hi John,

    You should check it after you receive ZDO_STATE_CHANGE and ( (XXX_NwkState == DEV_ZB_COORD) || (XXX_NwkState == DEV_ROUTER) || (XXX_NwkState == DEV_END_DEVICE) ) inside zclXXX_event_loop(), which should be located in your zcl_XXX.c.

    Regards!

    YK Chen

  • 0 in reply to YiKai Chen
    Prodigy 220 points

    Hi YK,

    That is what I did.  My application is based on Sensor Demo applicaton.  zb_StartConfirm() is called when ZDO_STATE_CHANGE and iif(pMsg->status == DEV_END_DEVICE || pMsg->status == DEV_ROUTER || pMsg->status == DEV_ZB_COORD ) is TRUE. 

    As I mentioned, in zb_StartConfirm() I check zgConfigPANID, zgApsUseExtendedPANID, and zgDefaultChannelList.  And they are the same value as what I initially set.  They do not have the values to indicate which PANID and channel is picked by the stack...

    However, I did find out that global variable _NIB contains the correct information.  But I wonder should I directly check _NIB structure in zb_StartConfirm()???  And I cannot find any code that modifies the variable, but it does get updated....  Wonder where is the code that updates the variable???

    In addition, ZCD_NV_NIB does not contain all the data of _NIB, wonder why is that???

    Thanks

    John 

  • 0 in reply to John Xu
    Guru 735685 points

    Hi John,

    Yes, you can read these information from _NIB. By the way, ZCD_NV_NIB only stores the short address of device and I also have no idea why TI only stores short address.

    Regards!

    YK Chen

  • 0 in reply to YiKai Chen
    Prodigy 220 points

    Actually I am still confused...

    After the network is started, does "nwkLogicalChannel" in _NIB have the value that is the channel picked by Z-Stack?

    What is "channelList" in _NIB?  After the network is started, why does it have a different value (i.e. 0x00300000) than the one I saved to ZCD_NV_CHANLIST (i.e. 0x07FFF800)?

  • 0 in reply to John Xu
    Prodigy 220 points

    Can anybody help?

  • 0 in reply to John Xu
    TI__Mastermind 19350 points

    ZMAC to the rescue and Hi, Ho Silver, Away!


    #include "ZMAC.h"
    #include "zmac_internal.h"


      uint8 currChannel;
     
      (void)ZMacGetReq(ZMacChannel, &currChannel);

  • 0 in reply to Dirty Harry
    Prodigy 220 points

    Hi Harry,

    Thanks for your help!  It works!!!  Now I can continue explore ZigBee using CC2530!

    One more question:  I can not find that API in any document (i.e. Z-Stack API reference only has two ZMac API listed ).  Is there a document that will list and explain all ZMac APIs?

    Thanks again! 

    John