.. zephyr:board:: stm32f769i_disco

Overview

The discovery kit enables a wide diversity of applications taking benefit from audio, multi-sensor support, graphics, security, security, video, and high-speed connectivity features. Important board features include:

STM32F769NIH6 microcontroller featuring 2 Mbytes of Flash memory and 512 Kbytes of RAM, in BGA216 package
On-board ST-LINK/V2-1 supporting USB reenumeration capability
USB ST-LINK functions: virtual COM port, mass storage, debug port
Five power supply options:
- ST LINK/V2-1
- USB HS connector
- 5 V from RJ45 (Power Over Ethernet)
- 5 V from Arduino™ or external connector
- USB charger
4-inch capacitive touch LCD display with MIPI-DSI connector
SAI audio codec
Two audio line jacks, one for input and one for output
Stereo speaker outputs
Four ST MEMS microphones on DFSDM inputs
Two SPDIF RCA input and output connectors
Two push-buttons (user and reset)
512-Mbit Quad-SPI Flash memory
128-Mbit SDRAM
Connector for microSD card
Wi-Fi or Ext-EEP daughterboard connector
USB OTG HS with Micro-AB connector
Ethernet connector compliant with IEEE-802.3-2002
Power Over Ethernet based on IEEE 802.3af (Powered Device, 48 V to 5 V, 3 W)
Power supply output for external applications: 3.3 V or 5 V
Arduino Uno V3 connectors
Comprehensive free software including a variety of examples, part of the STM32Cube package
Supported by a wide choice of integrated development environments

More information about the board can be found at the 32F769I-DISCO website_.

Hardware

The STM32F769I Discovery kit provides the following hardware components:

STM32F769NIH6 in BGA216 package
ARM® 32-bit Cortex®-M7 CPU with FPU
216 MHz max CPU frequency
VDD from 1.7 V to 3.6 V
2 MB Flash
512 + 16 + 4 KB SRAM
Flexible external memory controller with up to 32-bit data bus
Dual mode Quad-SPI
Chrom-ART Accelerator(DMA2D), graphical hardware accelerator enabling enhanced graphical user interface
Hardware JPEG codec
LCD-TFT controller supporting up to XGA resolution
MIPI® DSI host controller supporting up to 720p 30Hz resolution
3x12-bit ADC with 24 channels
2x12-bit D/A converters
DMA Controller
General Purpose Timers (15)
Watchdog Timers (2)
I2C (4)
USART/UART (8)
SPI (6)
SAI (2)
CAN (3)
SDMMC (2)
SPDIFRX interface
HDMI-CEC
MDIO slave interface
USB 2.0 full-speed device/host/OTG controller with on-chip PHY
USB 2.0 high-speed/full-speed device/host/OTG controller with dedicated DMA, on-chip full-speed PHY and ULPI
10/100 Ethernet MAC with dedicated DMA: supports IEEE 1588v2 hardware, MII/RMII
8- to 14-bit camera interface up to 54 Mbyte/s
True random number generator
CRC calculation unit
RTC: sub-second accuracy, hardware calendar
96-bit unique ID

More information about STM32F769NIH6 can be found here:

STM32F769NIH6 on www.st.com_
STM32F76xxx reference manual_

Supported Features

.. zephyr:board-supported-hw::

Pin Mapping

STM32F769I Discovery kit has 9 GPIO controllers. These controllers are responsible for pin muxing, input/output, pull-up, etc.

For more details please refer to 32F769I-DISCO board User Manual_.

Default Zephyr Peripheral Mapping:

UART_1 TX/RX : PA9/PA10 (ST-Link Virtual Port Com)
UART_6 TX/RX : PC6/PC7 (Arduino Serial)
I2C1 SCL/SDA : PB8/PB9 (Arduino I2C)
I2C4 SCL/SDA : PD12/PB7 (Touchscreen FT6202, PI13 Interrupt Pin)
SPI2 SCK/MISO/MOSI : PA12/PB14/PB15 (Arduino SPI)
ETH : PA1, PA2, PA7, PC1, PC4, PC5, PG11, PG13, PG14
LD1 : PJ13
LD2 : PJ5
LD3 : PA12
LD4 : PD4

System Clock

The STM32F769I System Clock can be driven by an internal or external oscillator, as well as by the main PLL clock. By default, the System clock is driven by the PLL clock at 216MHz, driven by a 25MHz high speed external clock.

Serial Port

The STM32F769I Discovery kit has up to 8 UARTs. The Zephyr console output is assigned to UART1 which connected to the onboard ST-LINK/V2 Virtual COM port interface. Default communication settings are 115200 8N1.

Programming and Debugging

.. zephyr:board-supported-runners::

STM32F769I Discovery kit includes an ST-LINK/V2 embedded debug tool interface.

Applications for the stm32f769i_disco 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 STM32F769I

First, connect the STM32F769I Discovery kit to your host computer using the USB port to prepare it for flashing. Then build and flash your application.

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

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: stm32f769i_disco :goals: build flash

Run a serial host program to connect with your board:

.. code-block:: console

$ minicom -D /dev/ttyACM0

You should see the following message on the console:

.. code-block:: console

Hello World! arm