Posts by grantstein95

  • JLink Intermittently Resetting Device via Reset Pin

    Hi Simon,

    I found the resolution to the issue was I had an old system service on my machine that was running the JLinkGDBServerCL. Even though it was for a different device, it was still causing some sort of interference with my normal JLink connection. That's still a bit of a mystery to me, but removing the service did solve it.

    The issue I was running into to with the uart was because while I was trying to debug the issue I disabled the VCOM port. That's my bad :)

    Kind Regards,

    Grant

  • JLink Intermittently Resetting Device via Reset Pin

    Hello,

    My Jlink Base Compact is resetting my device (STM32U585QI) approximately every 8-10 seconds via the reset pin according to the firmware on my device.

    This problem began when I started using my new laptop, a Macbook Pro with an M4 chip running Sequoia 15.5. My previous Macbook with the same OSX version and M1 chip does not exhibit this behavior.

    I recently uninstalled all segger tools and software from my computer and the issue stopped. Immediately upon reinstalling them my device started resetting. I didn't even start an application or interact with the JLink. I have ensured the OSX version, JLink Firmware, and JLink tool versions are all the same.

    Specifications:
    Platform: OSX
    JLink Type: JLink Base Compact
    JLink software version: 7.98b (although I have tried 8.36)
    JLink Firmware: V11
    Target Device: STM32U585QI

    Attempted Solutions:

    • Reinstall JLink Firmware
    • Remove all JLink/SEGGER files from system and reinstall JLink tools 7.98b
    • Different USB ports, i.e. USB Micro on Jlink to usb a hub and JLink to usb A to C adapter directly into PC USB C port
    • Disconnecting and reconnecting connections between the target the device and PC
    • Tried a script that continually set the rest pin high while target device was connected
    • Set VTREF to a static value instead of letting it auto negotiated, tested values of 1.8V and 3.3V
    • Our device uses an intermediate debug board, i.e. PC connects to JLink, JLink connects to debug board, debug board connects to target device, and I have tried multiple debug boards and experienced the same issue

    Please let me know what additional configuration or debug info can help. Thank you.

  • [ABANDONED] JLinkExe in background mode

    Hello,

    I saw this thread about using RTTLogger in background mode, and I have the same issue with JLinkExe: https://forum.segger.com/index.php/Thread/8761-SOLVED-How-to-use-J-Link-RTT-Logger-in-background-mode/?

    My question is: will this change be only for RTTLogger, or does it share a common backend with other tools and thus allow other Segger Tools, such as JLinkExe, to run in the background?

    How we found this: My team updated our version of Segger Tools to version v7.82, but this broke one of our scripts that ran JLinkExe in the background and then accessed the device connected to the JLink over netcat (nc). When we downgraded back to v6.98 we were able to run JLinkExe in the background and connect over netcat.

    We are using JLink BASE Compact's that are connected to raspberry pi's.

    Thank you,

    Grant