.. zephyr:board:: nucleo_f091rc

Overview

The STM32 Nucleo-64 development board with STM32F091RC MCU, supports Arduino and ST morpho connectivity.

The STM32 Nucleo board provides an affordable, and flexible way for users to try out new concepts, and build prototypes with the STM32 microcontroller, choosing from the various combinations of performance, power consumption, and features.

The Arduino* Uno V3 connectivity support and the ST morpho headers allow easy functionality expansion of the STM32 Nucleo open development platform with a wide choice of specialized shields.

The STM32 Nucleo board integrates the ST-LINK/V2-1 debugger and programmer.

The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various packaged software examples.

More information about the board can be found at the Nucleo F091RC website_.

Hardware

Nucleo F091RC provides the following hardware components:

STM32 microcontroller in QFP64 package
Two types of extension resources:
- Arduino* Uno V3 connectivity
- ST morpho extension pin headers for full access to all STM32 I/Os
On-board ST-LINK/V2-1 debugger/programmer with SWD connector:
- Selection-mode switch to use the kit as a standalone ST-LINK/V2-1
Flexible board power supply:
- USB VBUS or external source (3.3V, 5V, 7 - 12V)
- Power management access point
Three LEDs:
- USB communication (LD1), user LED (LD2), power LED (LD3)
Two push-buttons: USER and RESET
USB re-enumeration capability. Three different interfaces supported on USB:
- Virtual COM port
- Mass storage
- Debug port

More information about STM32F091RC can be found in the STM32F091 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.

Board connectors:

.. image:: img/nucleo_f091rc_connectors.jpg :align: center :alt: Nucleo F091RC connectors

Default Zephyr Peripheral Mapping:

UART_1 TX/RX : PB6/PB7
UART_2 TX/RX : PA2/PA3 (ST-Link Virtual COM Port)
I2C1 SCL/SDA : PB8/PB9 (Arduino I2C)
I2C2 SCL/SDA : PA11/PA12 (disabled by default, uses same pins as CAN)
CAN RX/TX : PA11/PA12
SPI1 SCK/MISO/MOSI : PA5/PA6/PA7 (Arduino SPI)
SPI2 SCK/MISO/MOSI : PB13/PB14/PB15
USER_PB : PC13
LD2 : PA5
DAC_OUT1 : PA4
PWM_2_CH1 : PA5 (might conflict with SPI1)

For more details please refer to STM32 Nucleo-64 board User Manual_.

Programming and Debugging

.. zephyr:board-supported-runners::

Nucleo F091RC board includes an ST-LINK/V2-1 embedded debug tool interface.

Applications for the nucleo_f091rc board configuration 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, OpenOCD or JLink can also be used to flash the board using the --runner (or -r) option:

.. code-block:: console

$ west flash --runner openocd $ west flash --runner jlink

Flashing an application to Nucleo F091RC

Here is an example for the :zephyr:code-sample:blinky application.

.. zephyr-app-commands:: :zephyr-app: samples/basic/blinky :board: nucleo_f091rc :goals: build flash

You will see the LED blinking every second.

Debugging

You can debug an application in the usual way. Here is an example for the :zephyr:code-sample:hello_world application.

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: nucleo_f091rc :maybe-skip-config: :goals: debug

References

.. target-notes::

.. _Nucleo F091RC website: https://www.st.com/en/evaluation-tools/nucleo-f091rc.html

.. _STM32F091 reference manual: https://www.st.com/resource/en/reference_manual/dm00031936.pdf

.. _STM32 Nucleo-64 board User Manual: https://www.st.com/resource/en/user_manual/dm00105823.pdf

.. _STM32CubeProgrammer: https://www.st.com/en/development-tools/stm32cubeprog.html