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JS_
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April 13, 2026
Solved

Error converting Eclipse STM32CubeIDE project to VS Code - "board is unknown"

  • April 13, 2026
  • 3 replies
  • 159 views

Could I get some guidance on this? Presumably I can fix this by installing a package or something...

Logs below (see second line from end).

Thank you!

 

2026-04-12 17:30:29.505 [Info] [project-manager] STM32CubeIDE project manager activation....
2026-04-12 17:32:30.960 [Info] [ide-project-convert] Starting project conversion...
2026-04-12 17:32:31.263 [Info] [ide-project-convert] cube wrapper version: 0.10.2
2026-04-12 17:32:31.551 [Info] [ide-project-convert] Starting installation...
2026-04-12 17:32:31.689 [Info] [ide-project-convert] Do you want to install the following bundles: ["osgi-exporter@0.0.4"] (yes, no, show)?
2026-04-12 17:32:31.692 [Info] [ide-project-convert] Downloading osgi-exporter@0.0.4 to '/Users/me/Library/Application Support/stm32cube/bundles/osgi-exporter/0.0.4'...
2026-04-12 17:32:32.004 [Info] [ide-project-convert] Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 1025 KiB / 61132 KiB 1% @ 3244 KiB/s
2026-04-12 17:32:32.055 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 2049 KiB / 61132 KiB 3% @ 5583 KiB/s
2026-04-12 17:32:32.084 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 3077 KiB / 61132 KiB 5% @ 7790 KiB/s
2026-04-12 17:32:32.103 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 4101 KiB / 61132 KiB 6% @ 9882 KiB/s
2026-04-12 17:32:32.157 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 5129 KiB / 61132 KiB 8% @ 10936 KiB/s
2026-04-12 17:32:32.177 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 6147 KiB / 61132 KiB 10% @ 12571 KiB/s
2026-04-12 17:32:32.211 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 7171 KiB / 61132 KiB 11% @ 13711 KiB/s
2026-04-12 17:32:32.227 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 8199 KiB / 61132 KiB 13% @ 15212 KiB/s
2026-04-12 17:32:32.392 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 9217 KiB / 61132 KiB 15% @ 13148 KiB/s
2026-04-12 17:32:32.410 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 10241 KiB / 61132 KiB 16% @ 14184 KiB/s
2026-04-12 17:32:32.464 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 11269 KiB / 61132 KiB 18% @ 14559 KiB/s
2026-04-12 17:32:32.506 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 12293 KiB / 61132 KiB 20% @ 15083 KiB/s
2026-04-12 17:32:32.542 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 13321 KiB / 61132 KiB 21% @ 15598 KiB/s
2026-04-12 17:32:32.579 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 14339 KiB / 61132 KiB 23% @ 16147 KiB/s
2026-04-12 17:32:32.741 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 15363 KiB / 61132 KiB 25% @ 14645 KiB/s
2026-04-12 17:32:32.753 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 16391 KiB / 61132 KiB 26% @ 15405 KiB/s
2026-04-12 17:32:32.823 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 17411 KiB / 61132 KiB 28% @ 15353 KiB/s
2026-04-12 17:32:32.844 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 18433 KiB / 61132 KiB 30% @ 15945 KiB/s
2026-04-12 17:32:33.017 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 19461 KiB / 61132 KiB 31% @ 14676 KiB/s
2026-04-12 17:32:33.029 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 20485 KiB / 61132 KiB 33% @ 15276 KiB/s
2026-04-12 17:32:33.079 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 21513 KiB / 61132 KiB 35% @ 15488 KiB/s
2026-04-12 17:32:33.493 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 22531 KiB / 61132 KiB 36% @ 12503 KiB/s
2026-04-12 17:32:33.505 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 23555 KiB / 61132 KiB 38% @ 12970 KiB/s
2026-04-12 17:32:33.532 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 24583 KiB / 61132 KiB 40% @ 13331 KiB/s
2026-04-12 17:32:33.559 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 25601 KiB / 61132 KiB 41% @ 13683 KiB/s
2026-04-12 17:32:33.979 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 26625 KiB / 61132 KiB 43% @ 11626 KiB/s
2026-04-12 17:32:34.028 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 27653 KiB / 61132 KiB 45% @ 11817 KiB/s
2026-04-12 17:32:34.041 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 28673 KiB / 61132 KiB 46% @ 12185 KiB/s
2026-04-12 17:32:34.069 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 29705 KiB / 61132 KiB 48% @ 12475 KiB/s
2026-04-12 17:32:34.244 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 30723 KiB / 61132 KiB 50% @ 12034 KiB/s
2026-04-12 17:32:34.265 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 31747 KiB / 61132 KiB 51% @ 12319 KiB/s
2026-04-12 17:32:34.280 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 32775 KiB / 61132 KiB 53% @ 12644 KiB/s
2026-04-12 17:32:34.320 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 33793 KiB / 61132 KiB 55% @ 12839 KiB/s
2026-04-12 17:32:34.504 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 34817 KiB / 61132 KiB 56% @ 12372 KiB/s
2026-04-12 17:32:34.517 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 35845 KiB / 61132 KiB 58% @ 12675 KiB/s
2026-04-12 17:32:34.938 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 36869 KiB / 61132 KiB 60% @ 11354 KiB/s
2026-04-12 17:32:34.960 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 37890 KiB / 61132 KiB 61% @ 11580 KiB/s
2026-04-12 17:32:34.979 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 38915 KiB / 61132 KiB 63% @ 11824 KiB/s
2026-04-12 17:32:35.008 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 39939 KiB / 61132 KiB 65% @ 12029 KiB/s
2026-04-12 17:32:35.028 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 40967 KiB / 61132 KiB 67% @ 12265 KiB/s
2026-04-12 17:32:35.202 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 41985 KiB / 61132 KiB 68% @ 11958 KiB/s
2026-04-12 17:32:35.365 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 43017 KiB / 61132 KiB 70% @ 11705 KiB/s
2026-04-12 17:32:35.379 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 44035 KiB / 61132 KiB 72% @ 11930 KiB/s
2026-04-12 17:32:35.545 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 45059 KiB / 61132 KiB 73% @ 11688 KiB/s
2026-04-12 17:32:35.709 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 46087 KiB / 61132 KiB 75% @ 11467 KiB/s
2026-04-12 17:32:35.718 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 47105 KiB / 61132 KiB 77% @ 11688 KiB/s
2026-04-12 17:32:36.009 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 48129 KiB / 61132 KiB 78% @ 11154 KiB/s
2026-04-12 17:32:36.025 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 49157 KiB / 61132 KiB 80% @ 11334 KiB/s
2026-04-12 17:32:36.191 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 50181 KiB / 61132 KiB 82% @ 11149 KiB/s
2026-04-12 17:32:36.210 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 51209 KiB / 61132 KiB 83% @ 11324 KiB/s
2026-04-12 17:32:36.380 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 52227 KiB / 61132 KiB 85% @ 11135 KiB/s
2026-04-12 17:32:36.391 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 53251 KiB / 61132 KiB 87% @ 11322 KiB/s
2026-04-12 17:32:36.425 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 54279 KiB / 61132 KiB 88% @ 11458 KiB/s
2026-04-12 17:32:36.441 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 55297 KiB / 61132 KiB 90% @ 11634 KiB/s
2026-04-12 17:32:36.484 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 56321 KiB / 61132 KiB 92% @ 11743 KiB/s
2026-04-12 17:32:36.499 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 57349 KiB / 61132 KiB 93% @ 11920 KiB/s
2026-04-12 17:32:36.540 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 58373 KiB / 61132 KiB 95% @ 12030 KiB/s
2026-04-12 17:32:36.577 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 59401 KiB / 61132 KiB 97% @ 12150 KiB/s
2026-04-12 17:32:36.599 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 60421 KiB / 61132 KiB 98% @ 12303 KiB/s
2026-04-12 17:32:36.616 [Info] [ide-project-convert]
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 61132 KiB / 61132 KiB 100% @ 12405 KiB/s
Downloading https://developer.st.com/bundles/o/osgi-exporter-0.0.4-all.bundle: 61132 KiB / 61132 KiB 100%. Done, 62600187 bytes downloaded.
2026-04-12 17:32:36.739 [Info] [ide-project-convert] Installing osgi-exporter@0.0.4...
2026-04-12 17:32:36.884 [Info] [ide-project-convert] Installed osgi-exporter@0.0.4 successfully, 59.69 MiB used
2026-04-12 17:32:36.885 [Info] [ide-project-convert]
2026-04-12 17:32:36.885 [Info] [ide-project-convert] Installation has been completed.
2026-04-12 17:32:36.887 [Info] [ide-project-convert] 'cube bundle --yes install osgi-exporter@0.0.4' exited with signal null [0]
2026-04-12 17:32:36.887 [Info] [ide-project-convert] Stopping installation...
2026-04-12 17:32:36.905 [Info] [ide-project-convert] Invoking STM32CubeIDE Eclipse exporter...
2026-04-12 17:32:40.401 [Info] [ide-project-convert] Generating project...
2026-04-12 17:32:40.884 [Error] [ide-project-convert] The specified 'STM32L476RCTx' board is unknown
2026-04-12 17:32:40.890 [Error] [ide-project-convert]: Project conversion failed with exit code: 36.
Best answer by Julien D

Thanks for catching this, I'll create an internal ticket as follow-up.

Waiting for a fix you can use the dedicated option shared above.

3 replies

Julien D
Julien D
ST Employee
April 13, 2026

Hello @JS_,

It looks like the MCU device has been set as a board in the intermediate JSON file (stm32cubeide-export.json). Could you share the JSON section that indicates the MCU/Board configuration? The JSON file should be located in the destination folder.

Could you also share the MCU and Board configuration visible in STM32CubeIDE?

JulienD_0-1776061691742.png

In the meantime, you can opt in to the option to skip this check, and relaunch again the conversion. You will be invited later to configure your project and select the device or board:

JulienD_1-1776061921167.png

 

 

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
    J
    JS_Author
    Associate
    April 14, 2026

    I don't have the "Board" section in the settings. This is on STM32CubeIDE v2.1

    Screenshot 2026-04-13 at 21.01.50.png

    And here's the relevant json section:

    Screenshot 2026-04-13 at 21.07.16.png

      Julien D
      Julien DBest answer
      ST Employee
      April 14, 2026

      Thanks for catching this, I'll create an internal ticket as follow-up.

      Waiting for a fix you can use the dedicated option shared above.

      To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
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