[stm32f0] Implement initial support for stm32f0#33
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AlexLanzano merged 1 commit intowolfSSL:mainfrom Apr 22, 2026
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Pull request overview
Adds initial STM32F0 (STM32F091RC) platform support to wolfHAL, including a new board target and core peripheral drivers/aliases.
Changes:
- Introduce STM32F0 RCC, flash, UART, and WWDG implementations; reuse STM32WB implementations for GPIO/SPI/I2C/IWDG via alias headers/stubs.
- Add STM32F091RC Nucleo board support (startup/IVT, linker script, board init, Makefile).
- Extend existing STM32WB GPIO/SPI/I2C code to recognize STM32F0 API-mapping defines; add STM32F0 GPIO test alias and update board documentation.
Reviewed changes
Copilot reviewed 30 out of 30 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
| wolfHAL/watchdog/stm32f0_wwdg.h | Declares STM32F0 WWDG config + API/driver symbol. |
| wolfHAL/watchdog/stm32f0_iwdg.h | Re-exports STM32WB IWDG API/types under STM32F0 names. |
| wolfHAL/uart/stm32f0_uart.h | Declares STM32F0 polled UART config + API/driver symbol. |
| wolfHAL/spi/stm32f0_spi.h | Re-exports STM32WB SPI API/types under STM32F0 names. |
| wolfHAL/platform/st/stm32f091xx.h | Provides STM32F091 peripheral regmap/clock-gate convenience macros. |
| wolfHAL/platform/arm/cortex_m0.h | Adds Cortex-M0 SysTick regmap/driver convenience macros. |
| wolfHAL/i2c/stm32f0_i2c.h | Re-exports STM32WB I2C API/types under STM32F0 names. |
| wolfHAL/gpio/stm32wb_gpio.h | Updates STM32WB GPIO header mapping conditions to include STM32F0. |
| wolfHAL/gpio/stm32f0_gpio.h | Re-exports STM32WB GPIO API/types/constants under STM32F0 names. |
| wolfHAL/flash/stm32f0_flash.h | Declares STM32F0 flash config + API/driver symbol and latency enum. |
| wolfHAL/clock/stm32f0_rcc.h | Declares STM32F0 RCC config structs/enums + API/driver symbol. |
| tests/gpio/test_stm32f0_gpio.c | Aliases STM32F0 GPIO platform test to STM32WB GPIO test. |
| src/watchdog/stm32f0_wwdg.c | Implements STM32F0 WWDG init/deinit/refresh + optional driver symbol. |
| src/watchdog/stm32f0_iwdg.c | Includes STM32WB IWDG implementation under STM32F0 build. |
| src/uart/stm32f0_uart.c | Implements STM32F0 polled UART init/deinit/send/recv (+ async stubs). |
| src/spi/stm32wb_spi.c | Extends mapping conditionals to support STM32F0 API-mapping define. |
| src/spi/stm32f0_spi.c | Includes STM32WB SPI implementation under STM32F0 build. |
| src/i2c/stm32wb_i2c.c | Extends mapping conditionals to support STM32F0 API-mapping define. |
| src/i2c/stm32f0_i2c.c | Includes STM32WB I2C implementation under STM32F0 build. |
| src/gpio/stm32wb_gpio.c | Extends mapping conditionals to support STM32F0 API-mapping define. |
| src/gpio/stm32f0_gpio.c | Includes STM32WB GPIO implementation under STM32F0 build. |
| src/flash/stm32f0_flash.c | Implements STM32F0 flash read/program/erase/lock/unlock + latency helper. |
| src/clock/stm32f0_rcc.c | Implements STM32F0 RCC clock-source selection, PLL config, clock gating. |
| boards/stm32f091rc_nucleo/linker.ld | Linker script for STM32F091RC (256K flash / 32K RAM). |
| boards/stm32f091rc_nucleo/ivt.c | Minimal startup + vector table for STM32F091RC. |
| boards/stm32f091rc_nucleo/board.h | Declares board globals, pins, flash layout, init helpers. |
| boards/stm32f091rc_nucleo/board.c | Board init/deinit wiring for clock/gpio/uart/spi/i2c/flash/systick. |
| boards/stm32f091rc_nucleo/Makefile.inc | Build flags/sources for STM32F091RC Nucleo board target. |
| boards/README.md | Adds STM32F091RC Nucleo to supported boards table. |
| .claude/skills/port-stm32-platform/SKILL.md | Documents test alias pattern + GPIO pin conflict check + README table note. |
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