Segger J-link RTT.

[Pradeep Chl]

We are currently working on NRF52 DK.

I know that a Segger RTT is used to print the debug message using a Real Time Terminal(like TeraData or Hercules).

I know that a Segger J-link is a programmer and debugger. Are we using the programmer-debugger to print the messages or we are using a UART to print the messages?

When I looked at the Segger RTT files at \examples\proprietary_rf\esb_low_power_prx\pca10040\blank\arm5_no_packs in NRF52 SDK 11.0, there is no mention of UART driver.

We are developing a board with nrf52832 chip, If we want to use Segger RTT to display data, what should be done?

[schneider]

Using Segger RTT with the nrf52 and a JLink Probe is quite easy:

1. You can "redirect" NRF_LOG_PRINTF through SeggerRTT by setting NRF_LOG_USES_RTT to 1 in your makefile/project (defined in nrf_log.h).
2. You can access the the SeggerRTT in a UART like way directly through the APIs in external/segger_rtt/SEGGER_RTT.h

To get your debugging output on the host machine, you can use JLinkRTTClient on Unix Machines (make sure you have a open JLink connection) or JLink RTT Viewer on Windows

[Alex]

To get the debug output you can also use a telnet client instead of the JLinkClient (see this post ). If you are using eclipse you can use the "TM Terminal" plugin. With this plugin you have a telnet client within eclipse (see this post ).