RTT & RTT disable sdk 12/13 nRF52832/nRF52840

[ble999]

Dear all,

Help please, I'm evaluating ble_app_uart (Central/Peripheral) but I don't understand how to disable the echo I have on the RTT USB VCP

When I send data from the UART, I got (PCA10056/10040) the data in both on the RTT USB VCP and on the UART I would like to control separately the UART and the USB VCP.

I would like to be able to use NRF_LOG in parallel, let's say NRF_LOG_RAW_INFO()/NRF_LOG_GETCHAR() for the RTT USB VCP only and printf() for UART.

example: if I do: printf("Hello world"), I got "Hello world" on both the USB/VCP (Segger) and on the PuTTY (from the UART) on the Host

Is there any #define to set (perhaps in sdk_config.h)? Probably a combination of : NRF_LOG_ENABLED,NRF_LOG_BACKEND_SERIAL_USES_UART,NRF_LOG_BACKEND_SERIAL_USES_RTT

1. with the following I got the echo on the RTT(USB/VCP) NRF_LOG_ENABLED=1, NRF_LOG_BACKEND_SERIAL_USES_UART=1, NRF_LOG_BACKEND_SERIAL_USES_RTT=1

2. In the following setting, the printf() outputs the "Hello world" on both the USB/VCP and on the UART PuTTY but the NRL_LOG_RAW_INFO() don't output anything NRF_LOG_ENABLED=1, NRF_LOG_BACKEND_SERIAL_USES_UART=1, NRF_LOG_BACKEND_SERIAL_USES_RTT=0

any idea?

Thanks in advance

[ble999]

Dear Peter,

Sorry about the delay to reply you, holidays. So I still have the problem, I tested with your suggestions: NRF_LOG_BACKEND_SERIAL_USES_RTT = 1 NRF_LOG_BACKEND_SERIAL_USES_UART=0 The TTY host software on an USB only

// using ble_app_uart_c for example main() { timer_init(); uart_init(): .... printf("\r\nHello world - printf()"); NRF_LOG_INFO("\r\nHello world - log()"); .... }

I got the following (only) on the TTY: Hello world - printf()

I expected to don't have the **...printf()..." on the RTT. Perhaps a retarget() default initialization?

Any idea?

Comment: I got the same output with: NRF_LOG_BACKEND_SERIAL_USES_RTT = 0 NRF_LOG_BACKEND_SERIAL_USES_UART=0

Thanks,