CC2340R5: logging function

Part Number: CC2340R5
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hi,

customer tried to enable the logging function regarding the SDK User's Guide:
https://dev.ti.com/tirex4-desktop/explore/content/simplelink_lowpower_f3_sdk_9_11_00_18/docs/zigbee/html/debugging/inc_logging_feature.html?highlight=log 

He activated the Log Module in sysconfig and choose UART as Sink.

der  ti_log_Log_ENABLE flag is defined:

He can find the correct files ti_log_config.s/.d/.h in the directory Debug/syscfg. 

But the Log_printf is not defined and runs into nowhere. At debug it shows that is not activated and it is stepped over. Compiler optimisation is -O0. The IDE function Expand Makro will also vanish it.

How can the logging over UART be activated?

Regards, Holger