[gpio, stm32, boards] Pack GPIO pin config into uint32_t for reduced data size#27
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AlexLanzano merged 1 commit intowolfSSL:mainfrom Apr 7, 2026
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Pull request overview
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This PR reduces GPIO configuration data size by replacing per-pin struct configs with a packed uint32_t representation and updates STM32 GPIO drivers, boards, and tests accordingly.
Changes:
- Replaced
whal_Stm32wbGpio_PinCfgstruct/enums with a packeduint32_tplus pack/unpack macros. - Updated STM32WB GPIO driver to consume packed pin configs and program registers from extracted fields.
- Migrated multiple board pin tables (WB/H5/F4/C0) and updated unit tests to use the new packed format.
Reviewed changes
Copilot reviewed 10 out of 10 changed files in this pull request and generated 8 comments.
Show a summary per file
| File | Description |
|---|---|
| wolfHAL/gpio/stm32wb_gpio.h | Introduces packed pin config type and pack/unpack macros, replacing struct-based config. |
| wolfHAL/gpio/stm32h5_gpio.h | Re-exports the STM32WB pack macro for STM32H5 configs. |
| wolfHAL/gpio/stm32f4_gpio.h | Re-exports the STM32WB pack macro for STM32F4 configs. |
| wolfHAL/gpio/stm32c0_gpio.h | Re-exports the STM32WB pack macro for STM32C0 configs. |
| tests/gpio/test_stm32wb_gpio.c | Updates duplicate-pin test to use field extractors on packed configs. |
| src/gpio/stm32wb_gpio.c | Updates GPIO init and IO paths to decode packed configs and program registers. |
| boards/stm32wb55xx_nucleo/board.c | Migrates board pin table initializers to the pack macro. |
| boards/stm32h563zi_nucleo/board.c | Migrates board pin table initializers to the pack macro (including Ethernet pins). |
| boards/stm32f411_blackpill/board.c | Migrates board pin table initializers to the pack macro. |
| boards/stm32c031_nucleo/board.c | Migrates board pin table initializers to the pack macro. |
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