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How to obtain data of PANID and CHANNEL that are being used.
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??
Try to check zgConfigPANID, zgApsUseExtendedPANID, and zgDefaultChannelList after your ZB network is composed.
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...
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.
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???
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.
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)?
Can anybody help?
ZMAC to the rescue and Hi, Ho Silver, Away!
#include "ZMAC.h" #include "zmac_internal.h"
uint8 currChannel; (void)ZMacGetReq(ZMacChannel, &currChannel);
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?
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