CC2530: Write attributes to a Z-Stack 1.22 based device

Claudio Hediger1

Part Number: CC2530

Hello

I try to catch the data of a write sequence in my firmware.

I thought this would get me to this code section:

  if ( events & SYS_EVENT_MSG )
  {
    while ( (MSGpkt = (afIncomingMSGPacket_t *)osal_msg_receive( zclZigUP_TaskID )) )
    {
      evt = MSGpkt->hdr.event;
      
      switch ( evt )
      {
      case ZCL_INCOMING_MSG:
        // Incoming ZCL Foundation command/response messages
        // <----- HERE
        zclZigUP_ProcessIncomingMsg( (zclIncomingMsg_t *)MSGpkt );
        break;

Actually i will get into the surrounding loop function, but the evt variable is always 0xFD and ZCL_INCOMING_MSG is 0x34
Therefore i dont get into zclZigUP_ProcessIncomingMsg.

I dont know what goes wrong...
Could someone guide me, where i can read out the values of the attributes sent to the device?

Here is the log from wireshark:

39953   30917.726539   0x0000   0x583a   ZigBee HA   64   ZCL: Write Attributes, Seq: 15
39954   30917.728618           IEEE 802.15.4   16   Ack
39955   30917.739220   0x583a   0x0000   ZigBee   56   APS: Ack, Dst Endpt: 1, Src Endpt: 8
39956   30917.741044           IEEE 802.15.4   16   Ack
39957   30917.749348   0x583a   0x0000   ZigBee HA   62   ZCL: Write Attributes Response, Seq: 15

Unfortunately there is no sample application which show how to handle attribute writes to a zigbee end node.

Thanks!

over 6 years ago

0 YiKai Chen over 6 years ago

Guru 735695 points

I suppose you add "case ZCL_CMD_WRITE_RSP:..." in your zclZigUP_ProcessIncomingMsg. You can refer to zclSampleLight_ProcessIncomingMsg in SampleLight for more details.

0 Claudio Hediger1 over 6 years ago in reply to YiKai Chen

Prodigy 160 points

Thanks for your answer.

The problem is, i dont even get to zclZigUP_ProcessIncomingMsg

Because

when i send my attributes from my ZNP to my end device, then evt

switch ( evt )

{

is 0xFD

but

ZCL_INCOMING_MSG

is 0x34

so there is no valid case for that.

For me it looks like that there goes something wrong, cause 0xFD is no valid value...

What do you think?

0 YiKai Chen over 6 years ago in reply to Claudio Hediger1

Guru 735695 points

Do you define ZCL_WRITE in your project?

0 Claudio Hediger1 over 6 years ago in reply to YiKai Chen

Prodigy 160 points

yes, i did

0 YiKai Chen over 6 years ago in reply to Claudio Hediger1

Guru 735695 points

Try to set a breakpoint in zclProcessInWriteCmd to see if it hits first.

0 Claudio Hediger1 over 6 years ago in reply to YiKai Chen

Prodigy 160 points

I already did that.

Nice side effect of setting a breakpoint there is, that it proves me that i have enabled ZCL_WRITE, cause otherwise i would not be able to set this breakpoint.

Below you can see the breakpoint.
But unfortunately, i never reach this breakpoint.

And here you can see the value of evt when i tried to write a attribute to it.

So i get an event, but with a strange event id.

0 YiKai Chen over 6 years ago in reply to Claudio Hediger1

Guru 735695 points

I mean set breakpoint inside zclProcessInWriteCmd not zclZigUP_ProcessIncomingMsg.

0 Claudio Hediger1 over 6 years ago in reply to YiKai Chen

Prodigy 160 points

Oh, im sorry, i thought it would be good enough to set it to zclProcessInWriteCmd.

I now see, that i only have zclProcessInWriteRspCmd and not zclProcessInWriteCmd

And if i search for zclProcessInWriteCmd with ctrl shift + f the only place where i can find it is: zcl.c

I am also not be able to set a breakpoint in zclProcessInWriteRspCmd

But i dont know why. Even when i remove the #ifdef ZCL_WRITE - recompile, i am not be able to set breakpoints there.

0 YiKai Chen over 6 years ago in reply to Claudio Hediger1

Guru 735695 points

Try to set optimization level to medium or low to set the breakpoint.

0 Claudio Hediger1 over 6 years ago in reply to YiKai Chen

Prodigy 160 points

Ok i did that.

Now i am able to set a Breakpoint to zclProcessInWriteRspCmd
But i thought you want me to set one to zclProcessInWriteCmd?

The breakpoint got never hit...

0 YiKai Chen over 6 years ago in reply to Claudio Hediger1

Guru 735695 points

Yes, I want you to set breakpoint on zclProcessInWriteCmd not zclProcessInWriteRspCmd.

0 Claudio Hediger1 over 6 years ago in reply to YiKai Chen

Prodigy 160 points

But i dont have that function....

Also in the examples light switch etc. there is no function zclProcessInWriteCmd defined.

Do i have to define they by my self?

0 YiKai Chen over 6 years ago in reply to Claudio Hediger1

Guru 735695 points

zclProcessInWriteCmd is in zcl.c.

0 Claudio Hediger1 over 6 years ago in reply to YiKai Chen

Prodigy 160 points

Damn....

Why i didnt found that ^^
Ok... now it works...

I have got a breakpoint there and see my data...

Thank you so much! what would i do without your help.

Now two last questions...

AttributeIDs. If i want to use custom features/function. Is there a "range" of attribute-ids which i can choose from for my custom functions?

What would be the best way to implement my functionality? Should i write diretly into zcl.c or is there a better way to outsource that?

Thanks!

0 YiKai Chen over 6 years ago in reply to Claudio Hediger1

Guru 735695 points

You can check zcl spec and make sure you don't use the range already defined by spec.

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CC2530: Write attributes to a Z-Stack 1.22 based device