NRF_LOG_INFO cannot output

[kino]

Hi, I am using ble_app_blinky_c_pca10040_s132 project, but I found it cannot output log, by using NRF_LOG_INFO. I have tried some ways, but it didn't work. I need your help, thanks!

[endnode]

Do you run it on PCA10040 aka nRF52 DK board? Which PCB version? Can you just upload pre-compiled HEX files through nRFgo Studio or nrfjprog and check what goes out through SEGGER J-Link emulated COM port on PC side? If all fails then could you (still with stock DK board and HEX files delivered by Nordic in nRF5 SDK - which is the set-up which was verified numerous times and people as 100% working) measure with logical analyzer or oscilloscope what really goes out on UART Tx PIN (if you use UART logging)?