SDK 12. app_uart_put is working but, printf does not.

[Jake]

Before(SDK11), I enabled uart and used printf function to print out log message to UART. But, in SDK12 I can not see printf message. But, app_uart_put is working.

Where should I modify to enable see printf messages?

[Jake]

I found by myself.

' #define RETARGET_ENABLED 1

is needed in sdk_config.h

[Jørgen Holmefjord]

Great that you found the solution and reported it back here!