boards/blues/cygnet/cygnet.dts

/*
 * Copyright (c) 2025 Blues
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/dts-v1/;
#include <st/l4/stm32l433Xc.dtsi>
#include <st/l4/stm32l433c(b-c)ux-pinctrl.dtsi>
#include "feather_connector.dtsi"
#include <zephyr/dt-bindings/input/input-event-codes.h>

/ {
	model = "Blues Cygnet";
	compatible = "blues,cygnet";

	chosen {
		zephyr,console = &lpuart1;
		zephyr,shell-uart = &lpuart1;
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
	};

	leds: leds {
		compatible = "gpio-leds";

		user_led: led_0 {
			gpios = <&gpioa 8 GPIO_ACTIVE_HIGH>;
			label = "User LED";
		};
	};

	gpio_keys {
		compatible = "gpio-keys";

		user_button: button {
			gpios = <&gpioc 13 GPIO_ACTIVE_LOW>;
			label = "User Button";
			zephyr,code = <INPUT_KEY_0>;
		};
	};

	// PH1 can be used to discharge the 3v3 net. Disabled by default.
	zephyr,user {
		dischrg-gpios = <&gpioh 1 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>;
	};

	supply-3v3 {
		compatible = "regulator-fixed";
		regulator-name = "supply-3v3";
		enable-gpios = <&gpioh 0 GPIO_ACTIVE_HIGH>;
		regulator-boot-on;
	};

	aliases {
		led0 = &user_led;
		sw0 = &user_button;
		volt-sensor0 = &vref;
		volt-sensor1 = &vbat;
	};
};

&clk_lsi {
	status = "okay";
};

&clk_hsi {
	status = "okay";
};

&pll {
	div-m = <1>;
	mul-n = <20>;
	div-p = <7>;
	div-q = <2>;
	div-r = <4>;
	clocks = <&clk_hsi>;
	status = "okay";
};

&rcc {
	clocks = <&pll>;
	clock-frequency = <DT_FREQ_M(80)>;
	ahb-prescaler = <1>;
	apb1-prescaler = <1>;
	apb2-prescaler = <1>;
};

&lpuart1 {
	pinctrl-0 = <&lpuart1_tx_pb11 &lpuart1_rx_pb10>;
	pinctrl-names = "default";
	current-speed = <115200>;
	status = "okay";
};

&usart1 {
	pinctrl-0 = <&usart1_tx_pa9 &usart1_rx_pa10>;
	pinctrl-names = "default";
	current-speed = <115200>;
};

&spi1 {
	pinctrl-0 = <&spi1_sck_pa5 &spi1_miso_pa6 &spi1_mosi_pb5>;
	pinctrl-names = "default";
	cs-gpios = <&gpiob 0 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
	status = "okay";
};

&i2c1 {
	pinctrl-0 = <&i2c1_scl_pb6 &i2c1_sda_pb7>;
	pinctrl-names = "default";
	clock-frequency = <I2C_BITRATE_FAST>;
	status = "okay";
};

&timers2 {
	status = "okay";

	pwm2: pwm {
		status = "okay";
		pinctrl-0 = <&tim2_ch1_pa0>;
		pinctrl-names = "default";
	};
};

&can1 {
	pinctrl-0 = <&can1_rx_pb8 &can1_tx_pb9>;
	pinctrl-names = "default";
	status = "okay";
};

&rtc {
	clocks = <&rcc STM32_CLOCK(APB1, 28)>,
		 <&rcc STM32_SRC_LSI RTC_SEL(2)>;
	status = "okay";
};

&flash0 {
	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;

		/*
		 * Reserve the final 16 KiB for file system partition
		 */
		storage_partition: partition@3c000 {
			label = "storage";
			reg = <0x0003c000 DT_SIZE_K(16)>;
		};
	};
};

&vref {
	status = "okay";
};

&vbat {
	status = "okay";
};