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feat: add STM32U073C(8-B-C) and STM32U083CC generic board support #2775

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feat: add STM32U073C(8-B-C) and STM32U083CC generic board support #2775

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@ndoo ndoo commented Jul 18, 2025 •
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Summary

This PR adds support for the STM32U073C(8-B-C) and STM32U083CC parts of the STM32U0 series.

This PR fixes/implements the following bugs/features

  • Feature: STM32U073C(8-B-C) and STM32U083CC generic board support

STM32U073C(8-B-C) and STM32U083CC generic board support was not added to boards.txt in #2495, but the variant files supporting it are mostly in place. This adds the boards.txt definition, linker script and clock configuration, which completes the support within Arduino.

Validation

CheckVariant.ino serial output on STM32U073CC:

#####
NUM_DIGITAL_PINS = 39
NUM_ANALOG_INPUTS = 10
#####
Checking digital pins...
End check digital pins
#####
Checking analog pins definition...
End check analog pins
#####
Checking IP instances (I2C, UART, SPI)...
End check IP instances (I2C, UART, SPI)

########################################
#### Test PASSED
########################################

fpistm
fpistm requested changes Jul 18, 2025
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Hi @ndoo
Thanks for the PR.
Please see my comments.

@ndoo ndoo force-pushed the stm32u073cct branch 4 times, most recently from 4719fe8 to 5bb4595 Compare July 18, 2025 15:00
@ndoo ndoo changed the title feat: add STM32U073CC generic board support feat: add STM32U073C(8-B-C) and STM32U083CC generic board support Jul 18, 2025
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ndoo commented Jul 18, 2025

Hi @ndoo Thanks for the PR. Please see my comments.

Welcome @fpistm, force-pushed with incorporated review feedback, please review.

@ndoo ndoo requested a review from fpistm July 18, 2025 15:03
fpistm
fpistm requested changes Jul 18, 2025
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@ndoo ndoo requested a review from fpistm July 18, 2025 15:23
@fpistm fpistm added the new variant Add support of new bard label Jul 18, 2025
@fpistm fpistm added this to the 2.11.0 milestone Jul 18, 2025
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new variant Add support of new bard
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STM32 core based on ST HAL
Status: In progress
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2.11.0
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