J-Link Lite-XMC4000 on XMC4500 relax board is working sporadically

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    • J-Link Lite-XMC4000 on XMC4500 relax board is working sporadically

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      Hi all, I need help some help with the following setup:

      Hardware: J-Link Lite on XMC4500 relax board
      Software: Ubuntu 22.04, JLink version 8.10g, Zephyr main branch

      Programming did not work at all until I re-flashed the firmware with JLinkConfig. Now it is (mostly) working *one* time after connecting the board over USB to the
      computer, but fails on every subsequent run. As the setup is described in the Zephyr documentation, I guess it was working sometime.

      `dmesg` output:

      Source Code

      1. [246043.070397] usb 1-4.1: new full-speed USB device number 27 using xhci_hcd
      2. [246043.206717] usb 1-4.1: New USB device found, idVendor=1366, idProduct=0101, bcdDevice= 1.00
      3. [246043.206731] usb 1-4.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
      4. [246043.206735] usb 1-4.1: Product: J-Link
      5. [246043.206738] usb 1-4.1: Manufacturer: SEGGER
      6. [246043.206740] usb 1-4.1: SerialNumber: 000551019312


      Working case

      Source Code

      1. west -v flash
      2. -- west flash: rebuilding
      3. cmake version 3.22.1 is OK; minimum version is 3.13.1
      4. Running CMake: /usr/bin/cmake --build zephyrproject/zephyr/build
      5. ninja: no work to do.
      6. -- west flash: using runner jlink
      7. -- runners.jlink: reset after flashing requested
      8. runners.jlink: JLINKARM_GetDLLVersion()=81007
      9. -- runners.jlink: JLink version: 8.10g
      10. runners.jlink: JLink commander script:
      11. ExitOnError 1
      12. r
      13. LE
      14. loadfile "zephyrproject/zephyr/build/zephyr/zephyr.bin" 0xc000000
      15. r
      16. g
      17. writeDP 1 0
      18. readDP 1
      19. q
      20. -- runners.jlink: Flashing file: zephyrproject/zephyr/build/zephyr/zephyr.bin
      21. runners.jlink: /opt/SEGGER/JLink_V810g/JLinkExe -nogui 1 -if swd -speed auto -device XMC4500-1024 -CommanderScript /tmp/tmp5rexrq4xjlink/runner.jlink -nogui 1
      22. SEGGER J-Link Commander V8.10g (Compiled Nov 14 2024 08:47:22)
      23. DLL version V8.10g, compiled Nov 14 2024 08:46:17
      26. J-Link Command File read successfully.
      27. Processing script file...
      28. J-Link>ExitOnError 1
      29. J-Link Commander will now exit on Error
      30. J-Link>r
      31. J-Link connection not established yet but required for command.
      32. Connecting to J-Link via USB...O.K.
      33. Firmware: J-Link Lite-XMC4000 Rev.1 compiled Apr 2 2015 18:25:20
      34. Hardware version: V1.00
      35. J-Link uptime (since boot): N/A (Not supported by this model)
      36. S/N: 551019312
      37. VTref=3.300V
      38. Target connection not established yet but required for command.
      39. Device "XMC4500-1024" selected.
      42. Connecting to target via SWD
      43. Performing XMC4500 connection sequence.
      44. DPv0 detected
      45. CoreSight SoC-400 or earlier
      46. Scanning AP map to find all available APs
      47. AP[1]: Stopped AP scan as end of AP map has been reached
      48. AP[0]: AHB-AP (IDR: 0x24770011, ADDR: 0x00000000)
      49. Iterating through AP map to find AHB-AP to use
      50. AP[0]: Core found
      51. AP[0]: AHB-AP ROM base: 0xE00FF000
      52. CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)
      53. Found Cortex-M4 r0p1, Little endian.
      54. FPUnit: 6 code (BP) slots and 2 literal slots
      55. CoreSight components:
      56. ROMTbl[0] @ E00FF000
      57. [0][0]: E000E000 CID B105E00D PID 000BB00C SCS-M7
      58. [0][1]: E0001000 CID B105E00D PID 003BB002 DWT
      59. [0][2]: E0002000 CID B105E00D PID 002BB003 FPB
      60. [0][3]: E0000000 CID B105E00D PID 003BB001 ITM
      61. [0][4]: E0040000 CID B105900D PID 000BB9A1 TPIU
      62. [0][5]: E0041000 CID B105900D PID 000BB925 ETM
      63. Memory zones:
      64. Zone: "Default" Description: Default access mode
      65. Cortex-M4 identified.
      66. Reset delay: 0 ms
      67. Performing XMC4500 reset
      68. J-Link>LE
      69. J-Link>loadfile "zephyrproject/zephyr/build/zephyr/zephyr.bin" 0xc000000
      70. 'loadfile': Performing implicit reset & halt of MCU.
      71. Performing XMC4500 reset
      72. Downloading file [zephyrproject/zephyr/build/zephyr/zephyr.bin]...
      73. Comparing flash [100%] Done.
      74. Erasing flash [100%] Done.
      75. Programming flash [100%] Done.
      76. J-Link: Flash download: Bank 0 @ 0x0C000000: 1 range affected (65536 bytes)
      77. J-Link: Flash download: Total: 1.850s (Prepare: 0.087s, Compare: 0.047s, Erase: 1.382s, Program & Verify: 0.286s, Restore: 0.046s)
      78. J-Link: Flash download: Program & Verify speed: 224 KB/s
      79. O.K.
      80. J-Link>r
      81. Reset delay: 0 ms
      82. Performing XMC4500 reset
      83. J-Link>g
      84. Memory map 'after startup completion point' is active
      85. J-Link>writeDP 1 0
      86. Writing DP register 1 = 0x00000000 (0 write repetitions needed)
      87. J-Link>readDP 1
      88. Reading DP register 1 = 0x00000040 (0 read repetitions needed)
      89. J-Link>q
      92. Script processing completed.
      Display All
      Non working case

      If I immediately repeat the flashing, it fails (seems it cannot find the JLink):

      Source Code

      1. west -v flash
      2. -- west flash: rebuilding
      3. cmake version 3.22.1 is OK; minimum version is 3.13.1
      4. Running CMake: /usr/bin/cmake --build zephyrproject/zephyr/build
      5. ninja: no work to do.
      6. -- west flash: using runner jlink
      7. -- runners.jlink: reset after flashing requested
      8. runners.jlink: JLINKARM_GetDLLVersion()=81007
      9. -- runners.jlink: JLink version: 8.10g
      10. runners.jlink: JLink commander script:
      11. ExitOnError 1
      12. r
      13. LE
      14. loadfile "zephyrproject/zephyr/build/zephyr/zephyr.bin" 0xc000000
      15. r
      16. g
      17. writeDP 1 0
      18. readDP 1
      19. q
      20. -- runners.jlink: Flashing file: zephyrproject/zephyr/build/zephyr/zephyr.bin
      21. runners.jlink: /opt/SEGGER/JLink_V810g/JLinkExe -nogui 1 -if swd -speed auto -device XMC4500-1024 -CommanderScript /tmp/tmpuj2ufsvzjlink/runner.jlink -nogui 1
      22. SEGGER J-Link Commander V8.10g (Compiled Nov 14 2024 08:47:22)
      23. DLL version V8.10g, compiled Nov 14 2024 08:46:17
      26. J-Link Command File read successfully.
      27. Processing script file...
      28. J-Link>ExitOnError 1
      29. J-Link Commander will now exit on Error
      30. J-Link>r
      31. J-Link connection not established yet but required for command.
      32. Connecting to J-Link via USB...FAILED: Cannot connect to J-Link.
      35. Script processing completed.
      38. FATAL ERROR: command exited with status 1: /opt/SEGGER/JLink_V810g/JLinkExe -nogui 1 -if swd -speed auto -device XMC4500-1024 -CommanderScript /tmp/tmpuj2ufsvzjlink/runner.jlink -nogui 1
      Display All
      The error message `FAILED: Cannot connect to J-Link.` appears after a timeout of several seconds, however if I disconnect the USB cable it immediately fails. So it seems to try to establish a connection but that
      does not succeed.

      Thanks in advance for your help!