How to change the debug UART from UART1 to 2nd UART

RE: How to change the debug UART from UART1 to 2nd UART

Mrespin — Mon, 02 Apr 2018 21:20:01 GMT

Hi,

I did research but unable to find how to set 2 pinsets and swap over. Would you please explain how to do it? Can same be done for different peripherals, as well?

RE: How to change the debug UART from UART1 to 2nd UART

Stefan Birnir Sverrisson — Fri, 01 Jul 2016 15:10:04 GMT

As you already pointed out, there is only one UART peripheral on the nRF51. It is however still possible to use UART for two different pinsets, just by simply configure the UART peripheral for one pin set, perform the UART communication, then configure the UART for the other pin set and carry out that UART communication. This will of course have certain overhead when always reconfiguring the UART for each transfer, which will limit the UART overall throughput and require more CPU time.

RE: How to change the debug UART from UART1 to 2nd UART

Stefan Birnir Sverrisson — Fri, 01 Jul 2016 15:02:29 GMT

@sjkim To further support shibshab's answer, there is also Nordic made guide here on how to set up RTT for nRF51

RE: How to change the debug UART from UART1 to 2nd UART

shibshab — Thu, 30 Jun 2016 11:22:33 GMT

Not a direct answer to your question, but it might fix your problem: For debugging purposes you can use Segger RTT which will allow you to get debugging info on a PC (using RTT Viewer) whilst communicating with another device.