UART comms. with nRF51-DK

RE: UART comms. with nRF51-DK

Jørgen Holmefjord — Mon, 03 Jul 2017 14:50:17 GMT

I'm not aware of any examples in the SDK that use RTT, but it should be sufficient to set the defines in sdk_config.h:

#define NRF_LOG_BACKEND_SERIAL_USES_UART 0
#define NRF_LOG_BACKEND_SERIAL_USES_RTT 1

RE: UART comms. with nRF51-DK

Ehsan — Mon, 03 Jul 2017 14:33:52 GMT

Hi Jorgen,

Are there any relevant examples that use RTT for such communications? Also, would it be as simple as changing the selected logging sink in the sdk_config header file? Thanks.

RE: UART comms. with nRF51-DK

Jørgen Holmefjord — Mon, 03 Jul 2017 14:17:09 GMT

Hi Ehsan,

If you want to send data on the UART interface from your custom board to your computer, you will need a UART connection from your board to the computer. The programming interface does not provide any UART connection. On the nRF5x DK, the interface MCU emulates a USB to UART interface and relays data between nRF5x chip and USB interface.

Another alternative is to use RTT for sending data to the computer. RTT runs over the SWD interface (same interface used to program the chip), and can be used without additional wiring. NRF_LOG module support RTT as the backend for logging data.

Best regards,

Jørgen