What's the use of f8wZCL.cfg in ZLL?

Jack,

Seems like your questions was answered in separate thread started by you:

e2e.ti.com/support/wireless_connectivity/f/158/p/368897/1298086.aspx

Please let us know in case of any confusion.

Saurabh

There is no difference to put define in  f8wZCL.cfg or  in the IAR "options->C/C++Complier->Preprocesson->Defined symbols".

For a specific IAR project configuration, as YiKai said, there is no difference in compiled code if the compile option is found in the f8wZCL.cfg file or in the IDE pre-processor defines.

Technically, though, there is a difference: in all Z-Stack applications:  (1) Compile options that are placed in a *.cfg file will be inherited by all projects include that file. This allows a group of applications to easily share the same settings. (2) Compile options that are placed in an application's pre-processor defines apply only to that application. This allows individualized "tuning" of compile settings.

Another thing to consider: what happens if the same compile option is specified in both places, perhaps with different settings? In CC2530/31/33-based systems (EW8051) and CC2520-based systems (EW430), compile options in the IDE pre-processor defines list will override the same settings in a *.cfg file. In CC2538-based systems (EWARM), the opposite is true - compile options in a *.cfg file will override the same settings in the IDE pre-processor defines.