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boards: st: add nucleo_c092rc
Adds definitions for the nucleo_c092rc supporting the stm32c092rc entry-level MCU with CAN-FD support. The series does not have a pll, so with the given 48MHz CAN core clock frequency no timing parameters can be found for 5MHz, and for 8MHz they have an error of 84/1000. Signed-off-by: Thomas Stranger <[email protected]>
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‎boards/st/nucleo_c092rc/Kconfig.nucleo_c092rc

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

‎boards/st/nucleo_c092rc/arduino_r3_connector.dtsi

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

‎boards/st/nucleo_c092rc/board.cmake

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# SPDX-License-Identifier: Apache-2.0
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# keep first
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board_runner_args(stm32cubeprogrammer "--port=swd" "--reset-mode=hw")
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board_runner_args(jlink "--device=STM32C092RC" "--speed=4000")
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# keep first
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include(${ZEPHYR_BASE}/boards/common/stm32cubeprogrammer.board.cmake)
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include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

‎boards/st/nucleo_c092rc/board.yml

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

‎boards/st/nucleo_c092rc/doc/img/st_nucleo_c092rc.webp

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‎boards/st/nucleo_c092rc/doc/index.rst

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.. zephyr:board:: nucleo_c092rc
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Overview
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********
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The STM32 Nucleo-64 development board with STM32C092RC MCU, supports Arduino and ST morpho connectivity.
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The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together
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with various packaged software examples.
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.. image:: img/st_nucleo_c092rc.webp
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:align: center
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:alt: Nucleo C092RC
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More information about the board can be found at the `Nucleo C092RC website`_.
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Hardware
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********
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Nucleo C092RC provides the following hardware components:
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- STM32 microcontroller in 64-pin package featuring 256 Kbytes of Flash memory
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and 30 Kbytes of SRAM.
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- Flexible board power supply:
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- USB VBUS or external source (3.3V, 5V, 7 - 12V)
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- Current consumption measurement (IDD)
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- five LEDs:
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- Two user LEDs (LD1, LD2), power LED (LD3),
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STLINK LED (LD4), USB power fault LED (LD5)
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- Three push-buttons: USER, RESET, BOOT
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- On-board ST-LINK/V2-1 debugger/programmer with SWD connector
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- Board connectors:
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- Arduino* Uno V3 expansion connector
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- ST morpho extension pin header
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- CAN FD interface with on board transceiver
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More information about STM32C092RC can be found here:
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`STM32C0x1 reference manual`_
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Supported Features
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==================
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.. zephyr:board-supported-hw::
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Connections and IOs
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===================
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Each of the GPIO pins can be configured by software as output (push-pull or open-drain), as
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input (with or without pull-up or pull-down), or as peripheral alternate function. Most of the
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GPIO pins are shared with digital or analog alternate functions. All GPIOs are high current
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capable except for analog inputs.
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Default Zephyr Peripheral Mapping:
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----------------------------------
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- CAN RX/TX/STBY: PD0/PD1/PD2
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- I2C1 SCL/SDA : PB8/PB9 (Arduino I2C)
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- LD1 : PA5
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- LD2 : PC9
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- SPI1 NSS/SCK/MISO/MOSI : PA15/PA5/PA6/PA7 (Arduino SPI)
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- UART_1 TX/RX : PB6/PB7 (Arduino Serial)
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- UART_2 TX/RX : PA2/PA3 (ST-Link Virtual Port Com)
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- USER_PB : PC13
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For more details please refer to `STM32 Nucleo-64 board User Manual`_.
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Programming and Debugging
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*************************
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.. zephyr:board-supported-runners::
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Nucleo C092RC board includes an ST-LINK/V2-1 embedded debug tool interface.
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Applications for the ``nucleo_c092rc`` board can be built and
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flashed in the usual way (see :ref:`build_an_application` and
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:ref:`application_run` for more details).
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Flashing
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========
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The board is configured to be flashed using west `STM32CubeProgrammer`_ runner,
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so its :ref:`installation <stm32cubeprog-flash-host-tools>` is required.
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Alternatively, an external JLink (Software and Documentation Package Version >= v8.12e)
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can also be used to flash the board using the ``--runner`` option:
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.. code-block:: console
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$ west flash --runner jlink
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Flashing an application to Nucleo C092RC
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----------------------------------------
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Here is an example for the :zephyr:code-sample:`blinky` application.
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.. zephyr-app-commands::
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:zephyr-app: samples/basic/blinky
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:board: nucleo_c092rc
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:goals: build flash
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You will see the LED blinking every second.
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References
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**********
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.. target-notes::
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.. _Nucleo C092RC website:
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https://www.st.com/en/evaluation-tools/nucleo-c092rc.html
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.. _STM32C0x1 reference manual:
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https://www.st.com/resource/en/reference_manual/rm0490-stm32c0-series-advanced-armbased-32bit-mcus-stmicroelectronics.pdf
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.. _STM32 Nucleo-64 board User Manual:
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https://www.st.com/resource/en/user_manual/um3353-stm32-nucleo64-board-mb2046-stmicroelectronics.pdf
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.. _STM32CubeProgrammer:
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https://www.st.com/en/development-tools/stm32cubeprog.html

‎boards/st/nucleo_c092rc/nucleo_c092rc.dts

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/*
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* Copyright (c) 2024 STMicroelectronics
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* Copyright (c) 2025 Thomas Stranger
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/dts-v1/;
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#include <st/c0/stm32c092Xc.dtsi>
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#include <st/c0/stm32c092rctx-pinctrl.dtsi>
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#include "arduino_r3_connector.dtsi"
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#include <zephyr/dt-bindings/input/input-event-codes.h>
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/ {
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model = "STMicroelectronics STM32C092RC-NUCLEO board";
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compatible = "st,stm32c092rc-nucleo";
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chosen {
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zephyr,console = &usart2;
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zephyr,shell-uart = &usart2;
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zephyr,sram = &sram0;
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zephyr,flash = &flash0;
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zephyr,canbus = &fdcan1;
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};
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leds: leds {
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compatible = "gpio-leds";
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green_led_1: led_1 {
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gpios = <&gpioa 5 GPIO_ACTIVE_HIGH>;
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label = "User LD1";
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};
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blue_led: led_2 {
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gpios = <&gpioc 9 GPIO_ACTIVE_LOW>;
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label = "User LD2";
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};
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};
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pwmleds {
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compatible = "pwm-leds";
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green_pwm_led: green_pwm_led {
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pwms = <&pwm1 1 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
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};
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};
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gpio_keys {
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compatible = "gpio-keys";
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user_button: button {
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label = "user button";
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gpios = <&gpioc 13 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
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status = "okay";
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zephyr,code = <INPUT_KEY_0>;
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};
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};
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transceiver0: can-phy0 {
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compatible = "microchip,mcp2562fd", "can-transceiver-gpio";
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standby-gpios = <&gpiod 2 GPIO_ACTIVE_HIGH>;
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max-bitrate = <5000000>;
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#phy-cells = <0>;
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};
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aliases {
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led0 = &green_led_1;
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led1 = &blue_led;
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pwm-led0 = &green_pwm_led;
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sw0 = &user_button;
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watchdog0 = &iwdg;
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die-temp0 = &die_temp;
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volt-sensor0 = &vref;
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};
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};
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&clk_lse {
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status = "okay";
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};
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&clk_hse {
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clock-frequency = <DT_FREQ_M(48)>;
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status = "okay";
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};
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&clk_hsi {
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status = "okay";
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};
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&rcc {
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clocks = <&clk_hse>;
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clock-frequency = <DT_FREQ_M(48)>;
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ahb-prescaler = <1>;
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apb1-prescaler = <1>;
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};
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&usart1 {
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pinctrl-0 = <&usart1_tx_pb6 &usart1_rx_pb7>;
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pinctrl-names = "default";
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current-speed = <115200>;
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status = "okay";
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};
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&usart2 {
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pinctrl-0 = <&usart2_tx_pa2 &usart2_rx_pa3>;
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pinctrl-names = "default";
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current-speed = <115200>;
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status = "okay";
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};
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&rtc {
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clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00000400>,
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<&rcc STM32_SRC_LSE RTC_SEL(1)>;
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status = "okay";
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};
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&iwdg {
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status = "okay";
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};
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&timers1 {
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st,prescaler = <10000>;
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status = "okay";
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pwm1: pwm {
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pinctrl-0 = <&tim1_ch1_pa5>;
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pinctrl-names = "default";
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status = "okay";
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};
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};
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&i2c1 {
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pinctrl-0 = <&i2c1_scl_pb8 &i2c1_sda_pb9>;
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pinctrl-names = "default";
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status = "okay";
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clock-frequency = <I2C_BITRATE_FAST>;
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};
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&spi1 {
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/* Note: PA5 is shared with green led0 */
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pinctrl-0 = <&spi1_nss_pa15 &spi1_sck_pa5
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&spi1_miso_pa6 &spi1_mosi_pa7>;
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pinctrl-names = "default";
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status = "okay";
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};
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&adc1 {
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pinctrl-0 = <&adc1_in0_pa0 &adc1_in1_pa1 &adc1_in4_pa4>;
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pinctrl-names = "default";
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st,adc-clock-source = "ASYNC";
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clocks = <&rcc STM32_CLOCK(APB1_2, 20U)>,
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<&rcc STM32_SRC_HSI ADC_SEL(2)>;
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st,adc-prescaler = <4>;
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status = "okay";
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vref-mv = <3300>;
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};
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&die_temp {
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status = "okay";
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};
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&vref {
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status = "okay";
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};
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&dma1 {
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status = "okay";
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};
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&dmamux1 {
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status = "okay";
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};
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/* Make sure SB11, SB12, and SB13 are closed (default configuration).
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* Close JP9 to enable 120 Ohm termination on the board.
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*/
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&fdcan1 {
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clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00001000>,
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<&rcc STM32_SRC_HSE FDCAN_SEL(2)>;
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pinctrl-0 = <&fdcan1_rx_pd0 &fdcan1_tx_pd1>;
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pinctrl-names = "default";
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phys = <&transceiver0>;
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status = "okay";
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};

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