J-Link RTT Client can't connet to RTT Server

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    • J-Link RTT Client can't connet to RTT Server

      Hello,

      I've been using Segger utilities on Windows for some time but few days ago I decided to switch to Linux and this is where problems started to arise. I'm using Eclipse CDT with ARM plugin. With this setup i am able to debug/program and step trough code without any problems. What bothers me is fact that RTT Client can't connect to my debug session, it never change status to 'Connected'. It constantly keep saying "###RTT Client: Connecting to J-Link RTT Server via localhost:19021 ..." and that's all :( I'm pretty sure that project configuration is valid because exactly the same project works on Windows machine without any problems.

      I also tried to connect manually via JLinkExe but that didn't change anything, below are logs:
      Connecting to target via SWD
      Found SW-DP with ID 0x2BA01477
      Found SW-DP with ID 0x2BA01477
      Scanning AP map to find all available APs
      AP[1]: Stopped AP scan as end of AP map has been reached
      AP[0]: AHB-AP (IDR: 0x24770011)
      Iterating through AP map to find AHB-AP to use
      AP[0]: Core found
      AP[0]: AHB-AP ROM base: 0xE00FF000
      CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)
      Found Cortex-M4 r0p1, Little endian.
      FPUnit: 6 code (BP) slots and 2 literal slots
      CoreSight components:
      ROMTbl[0] @ E00FF000
      ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 000BB00C SCS-M7
      ROMTbl[0][1]: E0001000, CID: B105E00D, PID: 003BB002 DWT
      ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 002BB003 FPB
      ROMTbl[0][3]: E0000000, CID: B105E00D, PID: 003BB001 ITM
      ROMTbl[0][4]: E0040000, CID: B105900D, PID: 000BB9A1 TPIU
      ROMTbl[0][5]: E0041000, CID: B105900D, PID: 000BB925 ETM
      Cortex-M4 identified.


      Any ideas where is the problem ?

      Best Regards
      Mateusz Piesta
    • New

      Hello Mateusz,

      Thank you for your inquiry.
      We tried to reproduce the issue using Embedded Studio and RTT Client under Ubuntu LTS 16.04 and everything was working as expected.
      Did you use the latest J-Link software version?
      Does it work if you use Embedded Studio or Ozone?
      segger.com/products/development-tools/embedded-studio/
      segger.com/products/development-tools/ozone-j-link-debugger/


      Best regards,

      Nino
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