This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

ST Nucleo G071RB

Overview

The Nucleo G071RB board features an ARM Cortex-M0+ based STM32G071RB MCU with a wide range of connectivity support and configurations. Here are some highlights of the Nucleo G071RB board:

  • 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

  • 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 (LD4), power LED (LD3)

  • Two push-buttons: USER and RESET

Nucleo G071RB

More information about the board can be found at the Nucleo G071RB website 1.

Hardware

Nucleo G071RB provides the following hardware components:

  • STM32 microcontroller in LQFP64 package

  • Two types of extension resources:

    • Arduino* Uno V3 connectivity

    • ST morpho extension pin headers for full access to all STM32 I/Os

  • ARM* mbed*

  • 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 (LD4), 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

  • Support of wide choice of Integrated Development Environments (IDEs) including:

    • IAR

    • ARM Keil

    • GCC-based IDEs

More information about STM32G071RB can be found here:

Supported Features

The Zephyr nucleo_g071rb board configuration supports the following hardware features:

Interface

Controller

Driver/Component

MPU

on-chip

arm memory protection unit

NVIC

on-chip

nested vector interrupt controller

UART

on-chip

serial port-polling; serial port-interrupt

PINMUX

on-chip

pinmux

GPIO

on-chip

gpio

I2C

on-chip

i2c

SPI

on-chip

spi

CLOCK

on-chip

reset and clock control

FLASH

on-chip

flash memory

COUNTER

on-chip

rtc

WATCHDOG

on-chip

independent watchdog

PWM

on-chip

pwm

ADC

on-chip

adc

DAC

on-chip

dac

die-temp

on-chip

die temperature sensor

Other hardware features are not yet supported in this Zephyr port.

The default configuration can be found in the defconfig file: boards/arm/nucleo_g071rb/nucleo_g071rb_defconfig

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:

  • UART_1 TX/RX : PC4/PC5

  • UART_2 TX/RX : PA2/PA3 (ST-Link Virtual Port Com)

  • I2C1 SCL/SDA : PB8/PB9 (Arduino I2C)

  • I2C2 SCL/SDA : PA11/PA12

  • SPI1 NSS/SCK/MISO/MOSI : PB0/PA5/PA6/PA7 (Arduino SPI)

  • SPI2 NSS/SCK/MISO/MOSI : PB12/PB13/PB14/PB15

  • USER_PB : PC13

  • LD4 : PA5

  • PWM : PA6

  • ADC1 IN0 : PA0

  • ADC1 IN1 : PA1

  • DAC1_OUT1 : PA4

For mode details please refer to STM32 Nucleo-64 board User Manual 3.

Programming and Debugging

Applications for the nucleo_g071rb board configuration can be built and flashed in the usual way (see Building an Application and Run an Application for more details).

Flashing

Nucleo G071RB board includes an ST-LINK/V3 embedded debug tool interface.

Flashing an application to Nucleo G071RB

Here is an example for the Blinky application.

# From the root of the zephyr repository
west build -b nucleo_g071rb samples/basic/blinky
west 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 Hello World application.

# From the root of the zephyr repository
west build -b nucleo_g071rb samples/hello_world
west debug

References

1

http://www.st.com/en/evaluation-tools/nucleo-g071rb.html

2

http://www.st.com/resource/en/reference_manual/dm00371828.pdf

3

http://www.st.com/resource/en/user_manual/dm00452640.pdf

4

http://www.st.com/en/microcontrollers/stm32g071rb.html