Problem with UART Communication

[nikola]

Hi,
I am trying to test the uart exemple on nrf52840 using external debugging as shown in figure but it doesn't function !!!!

are there any modifications that need to be added compared to the internal debugging mode or is it the same thing?

[Jared]

Hi.

nikola said:

Yes I need to test the UART example with external debug that means on the red board

 Ok. I'm still a bit confused over what the image was supposed to show. 

nikola said:

and it works in the segger terminal using RTT but the serial communication does not take place, that is to say when I try to test with putty it does not work

 Seems that you're referring to the log outputs. How is the logger configured in your sdk_config.h file? Can you upload your config file?

regards

Jared

[nikola]

---

5277.sdk_config.h

[Jared]

Hi,

Could you try to disable the RTT backend and see if the log output is displayed on PuTTY. Set 

NRF_LOG_BACKEND_RTT_ENABLED 1

 

in the config file.

regards

Jared 

[nikola]

I disable the RTT backend but it doesn't work in putty

[Jared]

Hi,

So I'm not sure how I was able to miss this but using UART as a backend for the logger and at the same time using it in the application is not possible. You would therefore have to use RTT as the backend. I'm very sorry that I didn't realize this before.

regards

Jared