Segger JLink tools on Raspberry Pi -

RE: Segger JLink tools on Raspberry Pi -

BLE_lp — Mon, 15 Jul 2019 15:03:13 GMT

Edit: Thanks Vidar. I was able to find my issue. The windows RTT viewer has more smarts - it always found the right channel/terminal for me and I never had to know about which RTT terminal I need to specify. The Linux version of RTT doesn't have the smarts. So I had to specify terminal "0" in the Linux RTT logger.

I also had to specify the interface correctly - "SWD" was the correct input. Which clashes with the flash utility which uses "S".

I really wish the ARM Linux host version of J-Link tools also came with a RTT Viewer and not just an RTT Logger. But this work at least.

Thanks again!

RE: Segger JLink tools on Raspberry Pi -

Vidar Berg — Mon, 15 Jul 2019 04:33:11 GMT

RTT logging worked on my PI 3B with driver v.6.46 and the J-link lite debugger.

RE: Segger JLink tools on Raspberry Pi -

BLE_lp — Fri, 12 Jul 2019 21:42:46 GMT

Hi Vidar,

I tried version 6.46. But still no RTT output. I've run into version issues with Segger tools on Windows before. On my Windows10 machine, I'm using V6.32i of RTT Viewer. More recent versions have not worked for me on Windows 10 - I don't see any output from RTT. I'll investigate further to see if an even earlier version works.

RE: Segger JLink tools on Raspberry Pi -

BLE_lp — Fri, 12 Jul 2019 21:37:26 GMT

Thanks for sharing your experience. Yes, I'm able to erase and flash hex file using the CLI tools on the Raspberry Pi via this:

./JLinkExe

>loadfile FILENAME.hex

I want to use RTT because it's what's being used in other work flows for manufacturing and testing.

RE: Segger JLink tools on Raspberry Pi -

Vidar Berg — Thu, 11 Jul 2019 12:00:03 GMT

Hi,

Could try downgrading to v.6.46. I may be related to the issue mentioned in this post: https://devzone.nordicsemi.com/f/nordic-q-a/49634/jlinkrttclient-not-working-on-ubuntu. To view RTT logs it should be enough to connect to the device with JLink commander like you did, then open the RTT client.

RE: Segger JLink tools on Raspberry Pi -

MJD093 — Wed, 10 Jul 2019 21:43:00 GMT

I have never used RTT on my RPi but flashing with JLinkExe is entirely possible as I have designed a custom flashing device for nRF52832s and test them using the RPi as the main controller straight from power-up. The RPi can also be set up to flash nRFs remotely both via JLinkRemoteServer (albeit this was a pain if the device is not hooked up to a router that has been set-up for port forwarding), or just using VNC to remote into the Pi and just entering the commands in manually (or via shell scripts like I do).

Do you have to use RTT to test the devices? Have you managed to flash the nRF52 with JLinkExe?

RE: Segger JLink tools on Raspberry Pi -

awneil — Wed, 10 Jul 2019 17:46:48 GMT

This is a question for Segger - nothing to do with Nordic.

eg, https://forum.segger.com/index.php/Thread/5693-SOLVED-J-Link-Remote-Server-on-Raspberry-Pi