zcl groups and scenes clusters did not implement any attributes?

Yes, you have to implement them by yourself.

Thanks Yikai.

Then it has the problem of updating the attributes.

Say, for the Scene attribute, SceneCount, I use a variable zclSampleLight_SceneCount to represent it. Whenever a scene is added/removed, this variable should be changed accordingly so that a read attribute command returns a correct value.

But the logic of Scene manipulation is in zcl_general.c/zclGeneral_ProcessInScenesServer().

I do not know when the add/remove scene command is received and its execution status.

The only way to update the variable is to modify the zclGeneral_ProcessInSceneServer() source codes.

If that is the case, source code maintenance would be hard when TI updates the zcl codes.

Please correct me.

You can use API zclGeneral_CountAllScenes or zclGeneral_CountScenes to update zclSampleLight_SceneCount when there comes a read zclSampleLight_SceneCount attribute command.

But how do I know when a read attribute command is received?

Using SampleLight as example, you can process it in zclSampleLight_ProcessInReadRspCmd().

zclSampleLight_ProcessInReadRspCmd() is called when the device receives a read attribute response, rather than a read attribute command. Isn't it?

No, zclSampleLight_ProcessInReadRspCmd() is called when the device receives a read attribute request.

Sorry but I don't understand that. According to the source code:

static void zclSampleLight_ProcessIncomingMsg( zclIncomingMsg_t *pInMsg)

{

  switch( pInMsg->zclHdr.commandID )

  { ...

  case ZCL_CMD_READ_RSP:

    zclSampleLight_ProcessInReadRspCmd( pInMsg );

...

}

It is clear that when commandID == ZCL_CMD_READ_RSP, ProcessInReadRspCmd() gets called.

Sorry, I make a mistake. You should use API zclGeneral_CountAllScenes or zclGeneral_CountScenes to update zclSampleLight_SceneCount when there is a new scene added. Process it in zclSampleLight_ProcessInReadRspCmd is too late.

Yes, I know that. But how do I know when there is a new scene added?