Nucleo G431KB

Overview

The Nucleo G431KB board features an ARM Cortex-M4 based STM32G431KB MCU with a wide range of connectivity support and configurations. Here are some highlights of the Nucleo G431KB board:

  • STM32 microcontroller in LQFP32 package

  • Arduino Nano V3 connectivity

  • On-board ST-LINK/V3E debugger/programmer

  • Flexible board power supply:

    • USB VBUS or external source(3.3 V, 5 V, 7 - 12 V)

    • Power management access point

  • Three LEDs: USB communication (LD1), power LED (LD3), user LED (LD2)

  • One push-button for RESET

More information about the board can be found at the Nucleo G431KB website [1].

  • Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell.

More information about STM32G431KB can be found here:

Supported Features

The nucleo_g431kb board supports the hardware features listed below.

on-chip / on-board
Feature integrated in the SoC / present on the board.
2 / 2
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.
vnd,foo
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

nucleo_g431kb/stm32g431xx target

Type

Location

Description

Compatible

CPU

on-chip

ARM Cortex-M4F CPU1

arm,cortex-m4f

ADC

on-chip

STM32 ADC2

st,stm32-adc

CAN

on-chip

STM32 FDCAN CAN FD controller1

st,stm32-fdcan

Clock control

on-chip

STM32 RCC (Reset and Clock controller)1

st,stm32-rcc

on-chip

STM32 HSE Clock1

st,stm32-hse-clock

on-chip

Generic fixed-rate clock provider2 1

fixed-clock

on-chip

STM32 LSE Clock1

st,stm32-lse-clock

on-chip

STM32G4 main PLL1

st,stm32g4-pll-clock

Counter

on-chip

STM32 counters6

st,stm32-counter

DAC

on-chip

STM32 family DAC2

st,stm32-dac

DMA

on-chip

STM32 DMA controller (V2)2

st,stm32-dma-v2

on-chip

STM32 DMAMUX controller1

st,stm32-dmamux

Flash controller

on-chip

STM32 Family flash controller1

st,stm32-flash-controller

GPIO & Headers

on-chip

STM32 GPIO Controller7

st,stm32-gpio

I2C

on-chip

STM32 I2C V2 controller1 2

st,stm32-i2c-v2

Interrupt controller

on-chip

ARMv7-M NVIC (Nested Vectored Interrupt Controller)1

arm,v7m-nvic

on-chip

STM32 External Interrupt Controller1

st,stm32-exti

LED

on-board

Group of GPIO-controlled LEDs1

gpio-leds

on-board

Group of PWM-controlled LEDs1

pwm-leds

MTD

on-chip

STM32 flash memory1

st,stm32-nv-flash

on-board

Fixed partitions of a flash (or other non-volatile storage) memory1

fixed-partitions

PHY

on-chip

This binding is to be used by all the usb transceivers which are built-in with USB IP1

usb-nop-xceiv

Pin control

on-chip

STM32 Pin controller1

st,stm32-pinctrl

PWM

on-chip

STM32 PWM1 7

st,stm32-pwm

Reset controller

on-chip

STM32 Reset and Clock Control (RCC) Controller1

st,stm32-rcc-rctl

RNG

on-chip

STM32 Random Number Generator1

st,stm32-rng

RTC

on-chip

STM32 RTC1

st,stm32-rtc

Sensors

on-chip

STM32 family TEMP node for production calibrated sensors with two calibration temperatures1

st,stm32-temp-cal

on-chip

STM32 VREF+1

st,stm32-vref

on-chip

STM32 VBAT1

st,stm32-vbat

Serial controller

on-chip

STM32 USART3

st,stm32-usart

on-chip

STM32 UART1

st,stm32-uart

on-chip

STM32 LPUART1

st,stm32-lpuart

SMbus

on-chip

STM32 SMBus controller3

st,stm32-smbus

SPI

on-chip

STM32 SPI controller with embedded Rx and Tx FIFOs3

st,stm32-spi-fifo

SRAM

on-chip

Generic on-chip SRAM description1

mmio-sram

USB Type-C Port Controller

on-chip

STM32 USB Type-C / Power Delivery1

st,stm32-ucpd

Timer

on-chip

ARMv7-M System Tick1

arm,armv7m-systick

on-chip

STM32 low-power timer (LPTIM)1

st,stm32-lptim

on-chip

STM32 timers1 9

st,stm32-timers

USB

on-chip

STM32 USB controller1

st,stm32-usb

Watchdog

on-chip

STM32 watchdog1

st,stm32-watchdog

on-chip

STM32 system window watchdog1

st,stm32-window-watchdog

Connections and IOs

Nucleo G431KB Board has 6 GPIO controllers. These controllers are responsible for pin muxing, input/output, pull-up, etc.

For more details please refer to STM32G4 Nucleo-32 board User Manual [2].

Default Zephyr Peripheral Mapping:

  • LPUART_1_TX : PA2

  • LPUART_1_RX : PA3

  • LD2 : PB8

  • PWM_4_CH_3 : PB8

  • I2C_2_SCL : PA9

  • I2C_2_SDA : PA8

System Clock

The Nucleo G431KB System Clock could be driven by internal or external oscillator, as well as main PLL clock. By default the external oscillator is not connected to the board. Therefore only the internal High Speed oscillator is supported. By default System clock is driven by PLL clock at 170 MHz, the PLL is driven by the 16 MHz high speed internal oscillator.

Serial Port

Nucleo G431KB board has 1 U(S)ARTs and one LPUART. The Zephyr console output is assigned to LPUART1. Default settings are 115200 8N1.

Please note that LPUART1 baudrate is limited to 9600 if the MCU is clocked by LSE (32.768 kHz) in low power mode.

Programming and Debugging

Nucleo G431KB Board includes an ST-Link/V3 embedded debug tool interface.

Applications for the nucleo_g431kb board target can be built and flashed in the usual way (see Building an Application and Run an Application for more details).

Flashing

The board is configured to be flashed using west STM32CubeProgrammer [5] runner, so its installation is required.

Alternatively, OpenOCD, or pyOCD can also be used to flash the board using the --runner (or -r) option:

$ west flash --runner openocd
$ west flash --runner pyocd

To enable support of the STM32G431KB SoC in pyOCD, its pack has to be installed first:

$ pyocd pack --update
$ pyocd pack --install stm32g431kb

Flashing an application to Nucleo G431KB

Connect the Nucleo G431KB to your host computer using the USB port, then run a serial host program to connect with your Nucleo board.

$ minicom -D /dev/ttyACM0

Now build and flash an application. Here is an example for Hello World.

# From the root of the zephyr repository
west build -b nucleo_g431kb samples/hello_world
west flash

You should see the following message on the console:

$ Hello World! nucleo_g431kb/stm32g431xx

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_g431kb samples/hello_world
west debug

References