boards: weact: add weact stm32u585ci core board

boards/weact/blackpill_u585ci/Kconfig.blackpill_u585ci

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+# Copyright (c) 2025 Michal Piekos
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_BLACKPILL_U585CI
+	select SOC_STM32U585XX

boards/weact/blackpill_u585ci/blackpill_u585ci.dts

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+/*
+ * Copyright (c) 2025 Michal Piekos
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include <st/u5/stm32u585Xi.dtsi>
+#include <st/u5/stm32u585ciux-pinctrl.dtsi>
+#include <zephyr/dt-bindings/input/input-event-codes.h>
+
+/ {
+	model = "WeAct Studio Black Pill STM32U585 Core Board";
+	compatible = "weact,blackpill-u585ci";
+
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	chosen {
+		zephyr,console = &usart1;
+		zephyr,shell-uart = &usart1;
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+		zephyr,canbus = &fdcan1;
+	};
+
+	aliases {
+		led0 = &led_0;
+		sw0 = &button_0;
+		watchdog0 = &iwdg;
+		volt-sensor0 = &vref1;
+		volt-sensor1 = &vbat4;
+		die-temp0 = &die_temp;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_0: led0 {
+			gpios = <&gpioc 13 GPIO_ACTIVE_HIGH>;
+			label = "User LED";
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+
+		button_0: button0 {
+			label = "User Button";
+			gpios = <&gpioa 0 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>;
+			zephyr,code = <INPUT_KEY_0>;
+		};
+	};
+
+	zephyr,user {
+		io-channels = <&adc1 5>, <&adc4 18>;
+	};
+};
+
+&clk_hsi48 {
+	status = "okay";
+};
+
+&clk_lse {
+	status = "okay";
+};
+
+&clk_hse {
+	clock-frequency = <DT_FREQ_M(25)>;
+	status = "okay";
+};
+
+&clk_msis {
+	status = "okay";
+	msi-range = <4>;
+	msi-pll-mode;
+};
+
+&pll1 {
+	div-m = <5>;
+	mul-n = <32>;
+	div-q = <2>;
+	div-r = <1>;
+	clocks = <&clk_hse>;
+	status = "okay";
+};
+
+&rcc {
+	clocks = <&pll1>;
+	clock-frequency = <DT_FREQ_M(160)>;
+	ahb-prescaler = <1>;
+	apb1-prescaler = <1>;
+	apb2-prescaler = <1>;
+	apb3-prescaler = <1>;
+};
+
+&lpuart1 {
+	pinctrl-0 = <&lpuart1_tx_pa2 &lpuart1_rx_pa3>;
+	pinctrl-names = "default";
+	current-speed = <115200>;
+	status = "okay";
+};
+
+&usart1 {
+	pinctrl-0 = <&usart1_tx_pa9 &usart1_rx_pa10>;
+	pinctrl-names = "default";
+	current-speed = <115200>;
+	status = "okay";
+};
+
+&i2c1 {
+	pinctrl-0 = <&i2c1_scl_pb6 &i2c1_sda_pb3>;
+	pinctrl-names = "default";
+	status = "okay";
+	clock-frequency = <I2C_BITRATE_FAST>;
+};
+
+&i2c2 {
+	pinctrl-0 = <&i2c2_scl_pb10 &i2c2_sda_pb14>;
+	pinctrl-names = "default";
+	status = "okay";
+	clock-frequency = <I2C_BITRATE_FAST>;
+};
+
+&spi1 {
+	pinctrl-0 = <&spi1_nss_pa4 &spi1_sck_pa1
+		     &spi1_miso_pa6 &spi1_mosi_pa7>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&fdcan1 {
+	clocks = <&rcc STM32_CLOCK_BUS_APB1_2 0x00000200>,
+		 <&rcc STM32_SRC_PLL1_Q FDCAN1_SEL(1)>;
+	pinctrl-0 = <&fdcan1_rx_pb8 &fdcan1_tx_pb9>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&adc1 {
+	pinctrl-0 = <&adc1_in5_pa0>;
+	pinctrl-names = "default";
+	st,adc-clock-source = "ASYNC";
+	st,adc-prescaler = <4>;
+	status = "okay";
+};
+
+&adc4 {
+	pinctrl-0 = <&adc4_in18_pb0>;
+	pinctrl-names = "default";
+	st,adc-clock-source = "ASYNC";
+	st,adc-prescaler = <4>;
+	status = "okay";
+};
+
+&dac1 {
+	/* CAUTION: DAC on PA4 may conflict with SPI1 NSS on same pin */
+	pinctrl-0 = <&dac1_out1_pa4>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&timers3 {
+	st,prescaler = <10000>;
+	status = "okay";
+
+	pwm3: pwm {
+		pinctrl-0 = <&tim3_ch1_pb4>;
+		pinctrl-names = "default";
+		status = "okay";
+	};
+};
+
+&timers4 {
+	st,prescaler = <10000>;
+	status = "okay";
+
+	pwm4: pwm {
+		pinctrl-0 = <&tim4_ch2_pb7>;
+		pinctrl-names = "default";
+		status = "okay";
+	};
+};
+
+zephyr_udc0: &usbotg_fs {
+	pinctrl-0 = <&usb_otg_fs_dm_pa11 &usb_otg_fs_dp_pa12>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	cdc_acm_uart0: cdc_acm_uart0 {
+		compatible = "zephyr,cdc-acm-uart";
+	};
+};
+
+&iwdg {
+	status = "okay";
+};
+
+&rng {
+	status = "okay";
+};
+
+&gpdma1 {
+	status = "okay";
+};
+
+&die_temp {
+	status = "okay";
+};
+
+&rtc {
+	clocks = <&rcc STM32_CLOCK_BUS_APB3 0x00200000>,
+		 <&rcc STM32_SRC_LSE RTC_SEL(1)>;
+	status = "okay";
+};
+
+&vref1 {
+	status = "okay";
+};
+
+&vbat4 {
+	status = "okay";
+};
+
+&clk_lsi {
+	status = "okay";
+};
+
+stm32_lp_tick_source: &lptim1 {
+	clocks = <&rcc STM32_CLOCK_BUS_APB3 0x00000800>,
+		 <&rcc STM32_SRC_LSI LPTIM1_SEL(1)>;
+	status = "okay";
+};
+
+&backup_sram {
+	status = "okay";
+};

boards/weact/blackpill_u585ci/blackpill_u585ci.yaml

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+identifier: blackpill_u585ci
+name: WeAct Studio Black Pill STM32U585 Core Board
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+  - gnuarmemb
+supported:
+  - can
+  - adc
+  - dac
+  - gpio
+  - i2c
+  - spi
+  - usart
+  - watchdog
+  - dma
+  - rtc
+ram: 784
+flash: 2048
+vendor: weact

boards/weact/blackpill_u585ci/blackpill_u585ci_defconfig

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+# SPDX-License-Identifier: Apache-2.0
+
+# enable uart driver
+CONFIG_SERIAL=y
+
+# enable GPIO
+CONFIG_GPIO=y
+
+# console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# Enable MPU
+CONFIG_ARM_MPU=y
+
+# Enable HW stack protection
+CONFIG_HW_STACK_PROTECTION=y

boards/weact/blackpill_u585ci/board.cmake

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+# keep first
+board_runner_args(dfu-util "--pid=0483:df11" "--alt=0" "--dfuse")
+board_runner_args(blackmagicprobe "--gdb-serial=/dev/ttyACM0")
+
+# keep first
+include(${ZEPHYR_BASE}/boards/common/dfu-util.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/blackmagicprobe.board.cmake)

boards/weact/blackpill_u585ci/board.yml

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+board:
+  name: blackpill_u585ci
+  full_name: WeAct Studio Black Pill STM32U585 Core Board
+  vendor: weact
+  socs:
+    - name: stm32u585xx