boards/arm/nucleo_f446ze/nucleo_f446ze.dts

/*
 * Copyright (c) 2021 Tom Owen
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/dts-v1/;
#include <st/f4/stm32f446Xe.dtsi>
#include <st/f4/stm32f446z(c-e)tx-pinctrl.dtsi>
#include "arduino_r3_connector.dtsi"

/ {
	model = "STMicroelectronics STM32F446ZE-NUCLEO board";
	compatible = "st,stm32f446ze-nucleo";

	chosen {
		zephyr,console = &usart3;
		zephyr,shell-uart = &usart3;
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,canbus = &can1;
	};

	leds {
		compatible = "gpio-leds";
		green_led_1: led_1 {
			gpios = <&gpiob 0 GPIO_ACTIVE_HIGH>;
			label = "User LD1";
		};
		blue_led_2: led_2 {
			gpios = <&gpiob 7 GPIO_ACTIVE_HIGH>;
			label = "User LD2";
		};
		red_led_3: led_3 {
			gpios = <&gpiob 14 GPIO_ACTIVE_HIGH>;
			label = "User LD3";
		};
	};

	gpio_keys {
		compatible = "gpio-keys";
		user_button: button {
			label = "User";
			gpios = <&gpioc 13 GPIO_ACTIVE_LOW>;
		};
	};

	aliases {
		led0 = &green_led_1;
		led1 = &blue_led_2;
		led2 = &red_led_3;
		sw0 = &user_button;
		volt-sensor0 = &vref;
		volt-sensor1 = &vbat;
	};
};

&clk_lsi {
	status = "okay";
};

&clk_hse {
	hse-bypass;
	clock-frequency = <DT_FREQ_M(8)>; /* STLink 8MHz clock */
	status = "okay";
};

&pll {
	div-m = <8>;
	mul-n = <336>;
	div-p = <2>;
	div-q = <7>;
	clocks = <&clk_hse>;
	status = "okay";
};

&rcc {
	clocks = <&pll>;
	clock-frequency = <DT_FREQ_M(168)>; /* highest value to get a precise USB clock */
	ahb-prescaler = <1>;
	apb1-prescaler = <4>;
	apb2-prescaler = <2>;
};

&adc1 {
	pinctrl-0 = <&adc1_in0_pa0>;
	pinctrl-names = "default";
	status = "okay";
};

&dac1 {
	status = "okay";
	pinctrl-0 = <&dac_out1_pa4>;
	pinctrl-names = "default";
};

&usart2 {
	pinctrl-0 = <&usart2_tx_pd5 &usart2_rx_pd6>;
	pinctrl-names = "default";
	current-speed = <115200>;
	status = "okay";
};

&usart3 {
	pinctrl-0 = <&usart3_tx_pd8 &usart3_rx_pd9>;
	pinctrl-names = "default";
	current-speed = <115200>;
	status = "okay";
};

&usart6 {
	pinctrl-0 = <&usart6_tx_pg14 &usart6_rx_pg9>;
	pinctrl-names = "default";
	current-speed = <115200>;
	status = "okay";
};


&i2c1 {
	pinctrl-0 = <&i2c1_scl_pb8 &i2c1_sda_pb9>;
	pinctrl-names = "default";
	status = "okay";
	clock-frequency = <I2C_BITRATE_FAST>;
};

&i2c2 {
	pinctrl-0 = <&i2c2_scl_pf1 &i2c2_sda_pf0>;
	pinctrl-names = "default";
	status = "okay";
	clock-frequency = <I2C_BITRATE_FAST>;
};


&spi1 {
	pinctrl-0 = <&spi1_sck_pa5 &spi1_miso_pa6 &spi1_mosi_pa7>;
	pinctrl-names = "default";
	cs-gpios = <&gpiod 14 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
	status = "okay";
};

&spi2 {
	pinctrl-0 = <&spi2_nss_pb12 &spi2_sck_pb13
		&spi2_miso_pb14 &spi2_mosi_pb15>;
	pinctrl-names = "default";
	status = "okay";
};

zephyr_udc0: &usbotg_fs {
	pinctrl-0 = <&usb_otg_fs_dm_pa11 &usb_otg_fs_dp_pa12
		&usb_otg_fs_id_pa10>;
	pinctrl-names = "default";
	status = "okay";
};


&timers1 {
	status = "okay";

	pwm1: pwm {
		status = "okay";
		pinctrl-0 = <&tim1_ch1_pe9>;
		pinctrl-names = "default";
	};
};

&rtc {
	clocks = <&rcc STM32_CLOCK_BUS_APB1 0x10000000>,
		 <&rcc STM32_SRC_LSI RTC_SEL(2)>;
	status = "okay";
};

&backup_sram {
	status = "okay";
};

&can1 {
	pinctrl-0 = <&can1_rx_pd0 &can1_tx_pd1>;
	pinctrl-names = "default";
	bus-speed = <125000>;
	status = "okay";
};

&flash0 {

	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;

		boot_partition: partition@0 {
			label = "mcuboot";
			reg = <0x00000000 DT_SIZE_K(64)>;
			read-only;
		};

		/*
		 * The flash starting at 0x00010000 and ending at
		 * 0x0001ffff (sectors 16-31) is reserved for use
		 * by the application.
		 */
		storage_partition: partition@10000 {
			label = "storage";
			reg = <0x00010000 DT_SIZE_K(64)>;
		};

		slot0_partition: partition@20000 {
			label = "image-0";
			reg = <0x00020000 DT_SIZE_K(128)>;
		};
		slot1_partition: partition@40000 {
			label = "image-1";
			reg = <0x00040000 DT_SIZE_K(128)>;
		};
		scratch_partition: partition@60000 {
			label = "image-scratch";
			reg = <0x00060000 DT_SIZE_K(128)>;
		};
	};
};

&vref {
	status = "okay";
};

&vbat {
	status = "okay";
};