[ABANDONED] GDB connection closed right after connecting

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  • [ABANDONED] GDB connection closed right after connecting

    Hello there,
    Recently I updated J-Link software. Since then, I am experiencing the following problem: After I start the debug session, it detrimentally ends after the connection is established. here is the output:

    Source Code

    1. SEGGER J-Link GDB Server V6.34 Command Line Version
    3. JLinkARM.dll V6.34 (DLL compiled Aug 7 2018 15:52:23)
    5. Command line: -port 2331 -s -CPU Cortex-M -device STM32L452VE -endian little -speed 1000 -if swd -vd
    6. -----GDB Server start settings-----
    7. GDBInit file: none
    8. GDB Server Listening port: 2331
    9. SWO raw output listening port: 2332
    10. Terminal I/O port: 2333
    11. Accept remote connection: localhost only
    12. Generate logfile: off
    13. Verify download: on
    14. Init regs on start: off
    15. Silent mode: off
    16. Single run mode: on
    17. Target connection timeout: 0 ms
    18. ------J-Link related settings------
    19. J-Link Host interface: USB
    20. J-Link script: none
    21. J-Link settings file: none
    22. ------Target related settings------
    23. Target device: STM32L452VE
    24. Target interface: SWD
    25. Target interface speed: 1000kHz
    26. Target endian: little
    28. Connecting to J-Link...
    29. J-Link is connected.
    30. Firmware: J-Link ARM V8 compiled Nov 28 2014 13:44:46
    31. Hardware: V8.00
    32. S/N: XXXXXXXX
    33. OEM: SEGGER-EDU
    34. Feature(s): FlashBP, GDB
    35. Checking target voltage...
    36. Target voltage: 5.05 V (Note: connected through galvanic isolator)
    37. Listening on TCP/IP port 2331
    38. Connecting to target...Connected to target
    39. Waiting for GDB connection...Connected to 127.0.0.1
    40. GDB closed TCP/IP connection
    41. Restoring target state and closing J-Link connection...
    42. Shutting down...
    Display All
    I would appreciate all help regarding this.
    PS: J-Flash Lite utility works correctly, I can program the target.

  • Hello,

    Thank you for your inquiry.
    For verification could you provide the S/N of the J-Link you are using? Is it the one you registered with?
    Generally the J-Link V8 you are using does not support Cortex-M4 targets: wiki.segger.com/Software_and_Hardware_Features_Overview
    That it works in J-Flash is pure chance.
    Unfortunately the J-Link V8 is out of support and maintenance so we recommend getting a new J-Link V10 model which includes Cortex-M4 debugging and many more new features.

    Best regards,
    Nino
    Please read the forum rules before posting.

    Keep in mind, this is *not* a support forum.
    Our engineers will try to answer your questions between their projects if possible but this can be delayed by longer periods of time.
    Should you be entitled to support you can contact us via our support system: segger.com/ticket/
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