boards: arm: add support for WeAct STM32G030 Core Board

boards/weact/stm32g030_core/Kconfig.defconfig

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+# STM32G030 Core V1.0 board configuration
+
+# Copyright (c) 2025 Siratul Islam
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_WEACT_STM32G030_CORE
+
+config SPI_STM32_INTERRUPT
+	default y
+	depends on SPI
+
+endif # BOARD_WEACT_STM32G030_CORE

boards/weact/stm32g030_core/Kconfig.weact_stm32g030_core

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+# Copyright (c) 2025 Siratul Islam
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_WEACT_STM32G030_CORE
+	select SOC_STM32G030XX

boards/weact/stm32g030_core/board.cmake

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+# SPDX-License-Identifier: Apache-2.0
+
+# keep first
+board_runner_args(stm32cubeprogrammer "--port=swd" "--reset-mode=hw")
+board_runner_args(jlink "--device=STM32G031K8" "--speed=4000")
+
+# keep first
+include(${ZEPHYR_BASE}/boards/common/stm32cubeprogrammer.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/openocd-stm32.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

boards/weact/stm32g030_core/board.yml

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+board:
+  name: weact_stm32g030_core
+  full_name: STM32G030 Core Board 1.0
+  vendor: weact
+  socs:
+    - name: stm32g030xx

boards/weact/stm32g030_core/doc/index.rst

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+.. zephyr:board:: weact_stm32g030_core
+
+Overview
+********
+The WeAct Studio STM32G030 Core Board provides an affordable and flexible way for
+users to try out new concepts and build prototypes with the STM32G030F6
+microcontroller. This compact development board is designed for space-constrained
+applications while maintaining essential functionality.
+
+The board requires an external ST-LINK or compatible SWD programmer
+for flashing and debugging, as it does not include an onboard debugger.
+
+Hardware
+********
+WeAct STM32G030 provides the following hardware components:
+
+- STM32G030F6P6 microcontroller in TSSOP-20 package featuring 32 Kbytes of Flash
+  memory and 8 Kbytes of SRAM
+- Compact form factor optimized for embedded applications
+- Exposed SWD header for programming and debugging (SWDIO, SWCLK, GND, 3V3)
+- One user LED connected to PA4 (blue LED)
+- NRST button for manual reset
+- Flexible board power supply:
+
+  - External 3.3V supply via power pins
+  - 5V input with onboard regulator
+
+- All GPIO pins broken out for maximum flexibility
+
+More information about STM32G030F6 can be found in the
+`STM32G0x0 reference manual`_ and `STM32G030x6 datasheet`_.
+
+Supported Features
+==================
+
+.. zephyr:board-supported-hw::
+
+Connections and IOs
+===================
+
+Each of the GPIO pins can be configured by software as output (push-pull or open-drain),
+as input (with or without pull-up or pull-down), or as peripheral alternate function.
+Most of the GPIO pins are shared with digital or analog alternate functions. All GPIOs
+are high current capable except for analog inputs.
+
+Default Zephyr Peripheral Mapping:
+----------------------------------
+
+- UART_1 TX/RX : PB6/PB7 (Primary Console)
+- UART_2 TX/RX : PA2/PA3 (Secondary UART)
+- I2C2 SCL/SDA : PA11/PA12
+- SPI1 SCK/MISO/MOSI : PA1/PA6/PA7
+- User LED : PA4 (Blue LED)
+- SWD Interface : PA13 (SWDIO), PA14 (SWCLK)
+
+System Clock
+------------
+
+The WeAct STM32G030 board is configured to use the internal HSI oscillator at 16 MHz
+with PLL to generate a system clock of 64 MHz. The board also includes LSE crystal
+support for RTC applications.
+
+Programming and Debugging
+*************************
+
+.. zephyr:board-supported-runners::
+
+WeAct STM32G030 board requires an external ST-LINK/V2 or compatible SWD debugger for
+programming and debugging. Connect your debugger to the SWD header:
+
+- SWDIO (PA13)
+- SWCLK (PA14)
+- GND
+- 3V3 (optional, for powering the board)
+
+Flashing
+========
+
+The board is configured to be flashed using west `STM32CubeProgrammer`_ runner,
+so its :ref:`installation <stm32cubeprog-flash-host-tools>` is required.
+
+Alternatively, OpenOCD or JLink can also be used to flash the board using
+the ``--runner`` (or ``-r``) option:
+
+.. code-block:: console
+
+   $ west flash --runner openocd
+   $ west flash --runner jlink
+
+Flashing an application to WeAct STM32G030
+-------------------------------------------
+
+Connect your ST-LINK or compatible programmer to the SWD header on the board.
+
+Here is an example for the :zephyr:code-sample:`blinky` application.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/basic/blinky
+   :board: weact_stm32g030_core
+   :goals: build flash
+
+You will see the blue LED on PA4 blinking every second.
+
+Debugging
+=========
+
+You can debug an application in the usual way. Here is an example for the
+:zephyr:code-sample:`hello_world` application.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: weact_stm32g030_core
+   :maybe-skip-config:
+   :goals: debug
+
+Serial Console
+==============
+
+The primary serial console is available on USART1 (PB6/PB7) at 115200 baud. Connect
+a USB-to-serial adapter to these pins to access the Zephyr shell and console output:
+
+- TX: PB6
+- RX: PB7
+- GND: GND
+
+References
+**********
+
+.. target-notes::
+
+.. _STM32G0x0 reference manual:
+   https://www.st.com/resource/en/reference_manual/rm0454-stm32g0x0-advanced-armbased-32bit-mcus-stmicroelectronics.pdf
+
+.. _STM32G030x6 datasheet:
+   https://www.st.com/resource/en/datasheet/stm32g030c6.pdf
+
+.. _STM32CubeProgrammer:
+   https://www.st.com/en/development-tools/stm32cubeprog.html

boards/weact/stm32g030_core/support/openocd.cfg

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+source [find interface/stlink.cfg]
+
+transport select hla_swd
+
+source [find target/stm32g0x.cfg]
+
+reset_config srst_only

boards/weact/stm32g030_core/weact_stm32g030_core.dts

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+/*
+ * Copyright (c) 2025 Siratul Islam
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include <st/g0/stm32g030X6.dtsi>
+#include <st/g0/stm32g030f6px-pinctrl.dtsi>
+#include <zephyr/dt-bindings/input/input-event-codes.h>
+
+/ {
+	model = "WeAct Studio STM32G030 Core Board";
+	compatible = "weact,stm32g030-core";
+
+	chosen {
+		zephyr,console = &usart1;
+		zephyr,shell-uart = &usart1;
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+	};
+
+	leds: leds {
+		compatible = "gpio-leds";
+
+		blue_led: blue_led {
+			gpios = <&gpioa 4 GPIO_ACTIVE_HIGH>;
+			label = "User LED";
+		};
+	};
+
+	aliases {
+		led0 = &blue_led;
+	};
+};
+
+&clk_hsi {
+	status = "okay";
+};
+
+&clk_lse {
+	status = "okay";
+};
+
+&pll {
+	div-m = <1>;
+	mul-n = <8>;
+	div-r = <2>;
+	clocks = <&clk_hsi>;
+	status = "okay";
+};
+
+&rcc {
+	clocks = <&pll>;
+	clock-frequency = <DT_FREQ_M(64)>;
+	ahb-prescaler = <1>;
+	apb1-prescaler = <1>;
+};
+
+&usart1 {
+	pinctrl-0 = <&usart1_tx_pb6 &usart1_rx_pb7>;
+	pinctrl-names = "default";
+	current-speed = <115200>;
+	status = "okay";
+};
+
+&usart2 {
+	pinctrl-0 = <&usart2_tx_pa2 &usart2_rx_pa3>;
+	pinctrl-names = "default";
+	current-speed = <115200>;
+	status = "okay";
+};
+
+&i2c2 {
+	pinctrl-0 = <&i2c2_scl_pa11 &i2c2_sda_pa12>;
+	pinctrl-names = "default";
+	clock-frequency = <I2C_BITRATE_FAST>;
+	status = "okay";
+};
+
+&spi1 {
+	pinctrl-0 = <&spi1_sck_pa1 &spi1_miso_pa6 &spi1_mosi_pa7>;
+	pinctrl-names = "default";
+	status = "okay";
+};

boards/weact/stm32g030_core/weact_stm32g030_core.yaml

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+identifier: weact_stm32g030_core
+name: WeAct Studio STM32G030 Core Board
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+  - gnuarmemb
+supported:
+  - gpio
+  - i2c
+  - spi
+ram: 8
+flash: 32
+vendor: weact

boards/weact/stm32g030_core/weact_stm32g030_core_defconfig

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+# SPDX-License-Identifier: Apache-2.0
+
+# Serial Drivers
+CONFIG_SERIAL=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+
+# Enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# GPIO Controller
+CONFIG_GPIO=y