STM32U5G9J Discovery Kit 1

Overview

The STM32U5G9J-DK1 Discovery kit is a complete demonstration and development platform for the STM32U5G9NJH6Q microcontroller, featuring an Arm® Cortex®-M33 core with Arm® TrustZone®.

Leveraging the innovative ultra-low-power oriented features, 3 Mbytes of embedded SRAM, 4 Mbytes of embedded flash memory, and rich graphics features, the STM32U5G9J-DK1 Discovery kit enables users to easily prototype applications with state-of-the-art energy efficiency, as well as providing stunning and optimized graphics rendering with the support of the 2.5D NeoChrom Accelerator, Chrom-ART Accelerator, and Chrom-GRC™ MMU.

The full range of hardware features available on the board helps users to enhance their application development by an evaluation of all the peripherals such as a 2.47-inch RGB 480 x 480 pixels TFT round LCD module with MIPI DSI® interface and capacitive touch panel, USB Type-C® HS, Octo-SPI flash memory device, Hexadeca-SPI PSRAM memory device, eMMC flash memory device, Time-of-Flight and gesture detection sensor, temperature sensor, 20-pin audio MEMS connector, and two 2.54 mm pitch double-row flexible expansion connectors for easy prototyping with daughterboards for specific applications (USART, LPUART, two SPIs, SAI, three I2C, SDMMC, ADCs, timers, and GPIOs).

The STM32U5G9J-DK1 Discovery kits integrate an STLINK-V3E embedded in-circuit debugger and programmer for the STM32 microcontroller with a USB Virtual COM port bridge and comes with the STM32CubeU5 MCU Package, which provides an STM32 comprehensive software HAL library as well as various software.

More information about the board can be found at the STM32U5G9J-DK1 website. More information about STM32U5A9NJH6Q can be found here:

Supported Features

The stm32u5g9j_dk1 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.

Pin Mapping

For more details please refer to STM32U5G9J-DK1 board User Manual.

Default Zephyr Peripheral Mapping:

  • USART_1 TX/RX : PA9/PA10 (ST-Link Virtual Port Com)

  • LD3 (GREEN) : PE0

  • LD4 (RED) : PE1

  • User Button: PC13

  • USART_3 TX/RX : PB10/PB11

  • LPUART_1 TX/RX : PG7/PG8

  • I2C1 SCL/SDA : PG14/PG13

  • I2C2 SCL/SDA : PF1/PF0

  • I2C6 SCL/SDA : PD1/PD0

  • SPI2 SCK/MISO/MOSI/CS : PB13/PD3/PD4/PB12

  • SPI3 SCK/MISO/MOSI/CS : PG9/PG10/PG11/PG15

  • ADC1 : channel5 PA0, channel14 PC5

  • ADC2 : channel9 PA4

  • ADC4 : channel5 PF14

System Clock

The STM32U5G9J-DK1 Discovery kit relies on an HSE oscillator (16 MHz crystal) and an LSE oscillator (32.768 kHz crystal) as clock references. Using the HSE (instead of HSI) is mandatory to manage the DSI interface for the LCD module and the USB high-speed interface.

Serial Port

The STM32U5G9J Discovery kit has up to 4 USARTs, 2 UARTs, and 1 LPUART. The Zephyr console output is assigned to USART1 is which connected to the onboard ST-LINK/V3.0. Virtual COM port interface. Default communication settings are 115200 8N1.

Programming and Debugging

The stm32u5g9j_dk1 board supports the runners and associated west commands listed below.

flash debug

STM32U5G9J Discovery kit includes an ST-LINK/V3 embedded debug tool interface. This probe allows to flash and debug the board using various tools.

Flashing

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

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

$ west flash --runner openocd

Flashing an application to STM32U5G9J_DK

Connect the STM32U5G9J Discovery board to your host computer using the USB port, then run a serial host program to connect with your Discovery board. For example:

$ minicom -D /dev/ttyACM0 -b 115200

Then, build and flash in the usual way. Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b stm32u5g9j_dk1 samples/hello_world
west flash

You should see the following message on the console:

Hello World! stm32u5g9j_dk1

Debugging

Default debugger for this board is OpenOCD. It could be used in the usual way with “west debug” command. Here is an example for the Blinky application.

# From the root of the zephyr repository
west build -b stm32u5g9j_dk1 samples/basic/blinky
west debug

Using the ST LCD DSI MB1835 shield

The ST LCD DSI MB1835 shield provides a 480x480 round LCD panel with capacitive touch for this board via MIPI DSI and I2C. You can exercise both display and touch using the Draw touch events sample:

# From the root of the zephyr repository
west build -b stm32u5g9j_dk1 --shield st_lcd_dsi_mb1835 samples/subsys/input/draw_touch_events
west flash

See the shield documentation for details: ST LCD DSI MB1835.