STM32: Add STM32C092 SoC support and NUCLEO-C092RC

boards/st/nucleo_c092rc/Kconfig.nucleo_c092rc

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+# Copyright (c) 2025 Thomas Stranger
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_NUCLEO_C092RC
+	select SOC_STM32C092XX

boards/st/nucleo_c092rc/arduino_r3_connector.dtsi

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+/*
+ * Copyright (c) 2024 STMicroelectronics
+ * Copyright (c) 2025 Thomas Stranger
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	arduino_header: connector {
+		compatible = "arduino-header-r3";
+		#gpio-cells = <2>;
+		gpio-map-mask = <0xffffffff 0xffffffc0>;
+		gpio-map-pass-thru = <0 0x3f>;
+		gpio-map = <0 0 &gpioa 0 0>,	/* A0 */
+			   <1 0 &gpioa 1 0>,	/* A1 */
+			   <2 0 &gpioa 4 0>,	/* A2 */
+			   <3 0 &gpiob 0 0>,	/* A3 */
+			   <4 0 &gpioc 4 0>,	/* A4 */
+			   <5 0 &gpioc 5 0>,	/* A5 */
+			   <6 0 &gpiob 7 0>,	/* D0 */
+			   <7 0 &gpiob 6 0>,	/* D1 */
+			   <8 0 &gpioa 10 0>,	/* D2 */
+			   <9 0 &gpioc 7 0>,	/* D3 */
+			   <10 0 &gpiob 5 0>,	/* D4 */
+			   <11 0 &gpiob 4 0>,	/* D5 */
+			   <12 0 &gpioc 8 0>,	/* D6 */
+			   <13 0 &gpioa 8 0>,	/* D7 */
+			   <14 0 &gpioa 9 0>,	/* D8 */
+			   <15 0 &gpiob 3 0>,	/* D9 */
+			   <16 0 &gpioa 15 0>,	/* D10 */
+			   <17 0 &gpioa 7 0>,	/* D11 */
+			   <18 0 &gpioa 6 0>,	/* D12 */
+			   <19 0 &gpioa 5 0>,	/* D13 */
+			   <20 0 &gpiob 9 0>,	/* D14 */
+			   <21 0 &gpiob 8 0>;	/* D15 */
+	};
+};
+
+arduino_i2c: &i2c1 {};
+arduino_spi: &spi1 {};
+arduino_serial: &usart1 {};

boards/st/nucleo_c092rc/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=STM32C092RC" "--speed=4000")
+
+# keep first
+include(${ZEPHYR_BASE}/boards/common/stm32cubeprogrammer.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

boards/st/nucleo_c092rc/board.yml

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+board:
+  name: nucleo_c092rc
+  full_name: Nucleo C092RC
+  vendor: st
+  socs:
+    - name: stm32c092xx

boards/st/nucleo_c092rc/doc/index.rst

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+.. zephyr:board:: nucleo_c092rc
+
+Overview
+********
+The STM32 Nucleo-64 development board, featuring the STM32C092RC MCU,
+supports both Arduino and ST morpho connectivity,
+and includes a CAN FD interface with an onboard transceiver.
+
+.. image:: img/st_nucleo_c092rc.webp
+   :align: center
+   :alt: Nucleo C092RC development board
+
+More information about the board can be found at the `Nucleo C092RC website`_.
+
+Hardware
+********
+Nucleo C092RC provides the following hardware components:
+
+- STM32 microcontroller in 64-pin package featuring 256 Kbytes of Flash memory
+  and 30 Kbytes of SRAM.
+
+- Flexible board power supply:
+
+  - USB VBUS or external source (3.3V, 5V, 7 - 12V)
+  - Current consumption measurement (IDD)
+
+- Five LEDs:
+
+  - Two user LEDs (LD1, LD2), one power LED (LD3),
+    one STLINK LED (LD4), and one USB power fault LED (LD5)
+
+- Three push-buttons: USER, RESET, BOOT
+
+- On-board ST-LINK/V2-1 debugger/programmer with SWD connector
+
+- Board connectors:
+
+  - Arduino* Uno V3 expansion connector
+  - ST morpho extension pin header
+  - CAN FD interface with on-board transceiver
+
+More information about STM32C092RC can be found here:
+`STM32C0x1 reference manual`_
+
+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:
+----------------------------------
+
+- CAN RX/TX/STBY: PD0/PD1/PD2
+- I2C1 SCL/SDA : PB8/PB9 (Arduino I2C)
+- LD1       : PA5
+- LD2       : PC9
+- SPI1 NSS/SCK/MISO/MOSI : PA15/PA5/PA6/PA7 (Arduino SPI)
+- UART_1 TX/RX : PB6/PB7 (Arduino Serial)
+- UART_2 TX/RX : PA2/PA3 (ST-Link Virtual COM Port)
+- USER_PB : PC13
+
+
+For more details please refer to `STM32 Nucleo-64 board User Manual`_.
+
+Programming and Debugging
+*************************
+
+.. zephyr:board-supported-runners::
+
+Nucleo C092RC board includes an ST-LINK/V2-1 embedded debug tool interface.
+
+Applications for the ``nucleo_c092rc`` board can be built and
+flashed in the usual way (see :ref:`build_an_application` and
+:ref:`application_run` for more details).
+
+Flashing
+========
+
+The board is configured to be flashed using west `STM32CubeProgrammer`_ runner,
+so its :ref:`installation <stm32cubeprog-flash-host-tools>` is required.
+
+Alternatively, an external JLink (Software and Documentation Package Version >= v8.12e)
+can also be used to flash the board using the ``--runner`` option:
+
+.. code-block:: console
+
+   $ west flash --runner jlink
+
+
+Flashing an application to Nucleo C092RC
+----------------------------------------
+
+Here is an example for the :zephyr:code-sample:`blinky` application.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/basic/blinky
+   :board: nucleo_c092rc
+   :goals: build flash
+
+You will see the LED blinking every second.
+
+References
+**********
+
+.. target-notes::
+
+.. _Nucleo C092RC website:
+   https://www.st.com/en/evaluation-tools/nucleo-c092rc.html
+
+.. _STM32C0x1 reference manual:
+   https://www.st.com/resource/en/reference_manual/rm0490-stm32c0-series-advanced-armbased-32bit-mcus-stmicroelectronics.pdf
+
+.. _STM32 Nucleo-64 board User Manual:
+   https://www.st.com/resource/en/user_manual/um3353-stm32-nucleo64-board-mb2046-stmicroelectronics.pdf
+
+.. _STM32CubeProgrammer:
+   https://www.st.com/en/development-tools/stm32cubeprog.html

boards/st/nucleo_c092rc/nucleo_c092rc.dts

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+/*
+ * Copyright (c) 2024 STMicroelectronics
+ * Copyright (c) 2025 Thomas Stranger
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include <st/c0/stm32c092Xc.dtsi>
+#include <st/c0/stm32c092rctx-pinctrl.dtsi>
+#include "arduino_r3_connector.dtsi"
+#include <zephyr/dt-bindings/input/input-event-codes.h>
+
+/ {
+	model = "STMicroelectronics STM32C092RC-NUCLEO board";
+	compatible = "st,stm32c092rc-nucleo";
+
+	chosen {
+		zephyr,console = &usart2;
+		zephyr,shell-uart = &usart2;
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+		zephyr,canbus = &fdcan1;
+	};
+
+	leds: leds {
+		compatible = "gpio-leds";
+
+		green_led_1: led_1 {
+			gpios = <&gpioa 5 GPIO_ACTIVE_HIGH>;
+			label = "User LD1";
+		};
+
+		blue_led: led_2 {
+			gpios = <&gpioc 9 GPIO_ACTIVE_LOW>;
+			label = "User LD2";
+		};
+	};
+
+	pwmleds {
+		compatible = "pwm-leds";
+
+		green_pwm_led: green_pwm_led {
+			pwms = <&pwm1 1 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+
+		user_button: button {
+			label = "user button";
+			gpios = <&gpioc 13 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+			status = "okay";
+			zephyr,code = <INPUT_KEY_0>;
+		};
+	};
+
+	transceiver0: can-phy0 {
+		compatible = "microchip,mcp2562fd", "can-transceiver-gpio";
+		standby-gpios = <&gpiod 2 GPIO_ACTIVE_HIGH>;
+		max-bitrate = <5000000>;
+		#phy-cells = <0>;
+	};
+
+	aliases {
+		led0 = &green_led_1;
+		led1 = &blue_led;
+		pwm-led0 = &green_pwm_led;
+		sw0 = &user_button;
+		watchdog0 = &iwdg;
+		die-temp0 = &die_temp;
+		volt-sensor0 = &vref;
+	};
+};
+
+&pwr {
+	wkup-pin@2 {
+		reg = <0x2>;
+		wkup-gpios = <&gpioc 13 STM32_PWR_WKUP_PIN_NOT_MUXED>;
+	};
+	wkup-pin@5 {
+		reg = <0x5>;
+		wkup-gpios = <&gpioc 5 STM32_PWR_WKUP_PIN_NOT_MUXED>;
+	};
+	wkup-pin@6 {
+		reg = <0x6>;
+		wkup-gpios = <&gpiob 5 STM32_PWR_WKUP_PIN_NOT_MUXED>;
+	};
+};
+
+&clk_lse {
+	status = "okay";
+};
+
+&clk_hse {
+	clock-frequency = <DT_FREQ_M(48)>;
+	status = "okay";
+};
+
+&clk_hsi {
+	status = "okay";
+};
+
+&rcc {
+	clocks = <&clk_hse>;
+	clock-frequency = <DT_FREQ_M(48)>;
+	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";
+};
+
+&rtc {
+	clocks = <&rcc STM32_CLOCK(APB1, 10)>,
+		 <&rcc STM32_SRC_LSE RTC_SEL(1)>;
+	status = "okay";
+};
+
+&iwdg {
+	status = "okay";
+};
+
+&timers1 {
+	st,prescaler = <10000>;
+	status = "okay";
+
+	pwm1: pwm {
+		pinctrl-0 = <&tim1_ch1_pa5>;
+		pinctrl-names = "default";
+		status = "okay";
+	};
+};
+
+&i2c1 {
+	pinctrl-0 = <&i2c1_scl_pb8 &i2c1_sda_pb9>;
+	pinctrl-names = "default";
+	status = "okay";
+	clock-frequency = <I2C_BITRATE_FAST>;
+};
+
+&spi1 {
+	/* Note: PA5 is shared with green led0 */
+	pinctrl-0 = <&spi1_nss_pa15 &spi1_sck_pa5
+		     &spi1_miso_pa6 &spi1_mosi_pa7>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&adc1 {
+	pinctrl-0 = <&adc1_in0_pa0 &adc1_in1_pa1 &adc1_in4_pa4>;
+	pinctrl-names = "default";
+	st,adc-clock-source = "ASYNC";
+	clocks = <&rcc STM32_CLOCK(APB1_2, 20)>,
+		 <&rcc STM32_SRC_HSI ADC_SEL(2)>;
+	st,adc-prescaler = <4>;
+	status = "okay";
+	vref-mv = <3300>;
+};
+
+&die_temp {
+	status = "okay";
+};
+
+&vref {
+	status = "okay";
+};
+
+&dma1 {
+	status = "okay";
+};
+
+&dmamux1 {
+	status = "okay";
+};
+
+/* Make sure SB11, SB12, and SB13 are closed (default configuration).
+ * Close JP9 to enable 120 Ohm termination on the board.
+ */
+&fdcan1 {
+	clocks = <&rcc STM32_CLOCK(APB1, 12)>,
+		 <&rcc STM32_SRC_HSE FDCAN_SEL(2)>;
+	pinctrl-0 = <&fdcan1_rx_pd0 &fdcan1_tx_pd1>;
+	pinctrl-names = "default";
+	phys = <&transceiver0>;
+	status = "okay";
+};