J-Link RTTLogger Control block not found

[robertsehlstedt]

Hello,

I am trying to connect to my nRF52832 through J-Link v6.22g. This version doesn't contain the RTT Viewer GUI, but instead I am trying to connect through the RTTLogger.

However, I run the RTTLogger with the following settings

Device name: NRF52832_XXAA
Target interface: SWD
Interface speed [kHz]: 4000
RTT Control Block address: auto-detection
RTT Channel name or index: channel 1
Output file: RTT_<ChannelName>_<Time>.log

I get a message:

"
Connected to:
  J-Link OB-SAM3U128-V2-NordicSemi compiled Jan  7 2019 14:07:15
  S/N: 682995637

Searching for RTT Control Block...
"

And then I'm stuck, and if I click any button then it tells me that

"
RTT Control Block not found. Cannot get data.

Shutting down...
"

I have read somewhere that you can find the address of the control block directly and enter that one instead of auto detection, but I don't really understand where I can find it, or if that's even the best solution.

Also if I use the RTTClient instead, it's just stuck on connecting through localhost.

Thanks

[robertsehlstedt]

I have an update! I found the guide over at https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sr3nrf52.firmware%2Flogger.html on how to run RTT on Linux.

I can connect to the device through

" JLinkExe -autoconnect 1 -device NRF52832_XXAA -if SWD -speed 4000 "

However, when I start the JLinkRTTClient, I'm just stuck on

" ###RTT Client: Connecting to J-Link RTT Server via localhost:19021 "

I have tried to reset and go by typing r and g into the jlink commander, but it doesn't change anything.

[robertsehlstedt]

This was somehow solved by restarting my laptop.. Lesson learned :)