Add DualMCU RP2040 board support#19218
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Add support for the UNIT Electronics DualMCU RP2040 + ESP32 board. Configure default UART, I2C, and SPI pins from the board pinout. Add board metadata and include this board in rp2 CI builds. Signed-off-by: GitHub Actions <cesar.bautista@uelectronis.com>
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Josverl
reviewed
May 14, 2026
| make ${MAKEOPTS} -C mpy-cross | ||
| make ${MAKEOPTS} -C ports/rp2 submodules | ||
| make ${MAKEOPTS} -C ports/rp2 | ||
| make ${MAKEOPTS} -C ports/rp2 BOARD=DUALMCU_RP2040 |
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Not all boards need to be built in CI as this would take too much time.
As this board definition does not add code, but only configuration, I don't think this is needed.
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Thanks for the review.
That makes sense. I’ve removed the additional CI build entry for the board.
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Remove the extra CI build line for the DUALMCU_RP2040 board, as requested in review. Signed-off-by: GitHub Actions <cesar.bautista@uelectronis.com>
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Summary
Add MicroPython board support for the UNIT Electronics DualMCU RP2040 + ESP32 development board.
This adds a dedicated RP2040 board definition with default pins for:
It also adds board metadata and enables the board in the RP2 CI build.
Testing
Built locally on the RP2 port:
make -C mpy-crossmake -C ports/rp2 BOARD=DUALMCU_RP2040 submodulesmake -C ports/rp2 BOARD=DUALMCU_RP2040Verified build outputs:
ports/rp2/build-DUALMCU_RP2040/firmware.elfports/rp2/build-DUALMCU_RP2040/firmware.uf2Also tested the onboard LED on physical hardware from the MicroPython REPL on the DualMCU RP2040.
Trade-offs and Alternatives
This adds a small amount of board-specific configuration and one extra RP2 CI build. The trade-off is worthwhile because it provides a dedicated firmware build for the board and helps catch regressions automatically.
An alternative would be to reuse a generic RP2040 board definition, but that would not reflect the board's default pinout or metadata.
Generative AI
I used generative AI tools when creating this PR, but a human has checked the code and is responsible for the code and the description above.