STM32F746G Discovery
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:
STM32F746NGH6 microcontroller featuring 1 Mbytes of Flash memory and 340 Kbytes of RAM, in BGA216 package
On-board ST-LINK/V2-1 supporting USB re-enumeration capability
Five power supply options:
ST LINK/V2-1
USB FS connector
USB HS connector
VIN from Arduino connector
External 5 V from connector
Two pushbuttons (user and reset)
USB functions: virtual COM port, mass storage, debug port
4.3-inch 480x272 color LCD-TFT with capacitive touch screen
SAI audio codec
Audio line in and line out jack
Stereo speaker outputs
Two ST MEMS microphones
SPDIF RCA input connector
128-Mbit Quad-SPI Flash memory
128-Mbit SDRAM (64 Mbits accessible)
Connector for microSD card
USB OTG HS with Micro-AB connectors
USB OTG FS with Micro-AB connectors
Ethernet connector compliant with IEEE-802.3-2002
More information about the board can be found at the 32F746G-DISCO website.
Hardware
The STM32F746G Discovery kit provides the following hardware components:
STM32F746NGH6 in BGA216 package
ARM® 32-bit Cortex® -M7 CPU with FPU
216 MHz max CPU frequency
VDD from 1.8 V to 3.6 V
2 MB Flash
384+4 KB SRAM including 64-Kbyte of core coupled memory
GPIO with external interrupt capability
LCD parallel interface, 8080/6800 modes
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
RTC
Advanced-control Timer
General Purpose Timers (17)
Watchdog Timers (2)
USART/UART (8)
I2C (3)
SPI (6)
1xSAI (serial audio interface)
SDIO
2xCAN
USB 2.0 OTG FS with on-chip PHY
USB 2.0 OTG HS/FS with dedicated DMA, on-chip full-speed PHY and ULPI
10/100 Ethernet MAC with dedicated DMA
8- to 14-bit parallel camera
CRC calculation unit
True random number generator
DMA Controller
More information about STM32F746NGH6 can be found here:
Supported Features
The stm32f746g_disco 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.
stm32f746g_disco/stm32f746xx target
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M7 CPU1 |
|
ADC |
on-chip |
STM32F4 ADC3 |
|
CAN |
on-chip |
STM32 CAN controller2 |
|
Clock control |
on-chip |
STM32 RCC (Reset and Clock controller)1 |
|
on-chip |
STM32 HSE Clock1 |
||
on-chip |
|||
on-chip |
STM32 LSE Clock1 |
||
on-chip |
STM32F7 Main PLL1 |
||
on-chip |
STM32 Microcontroller Clock Output (MCO)2 |
||
Counter |
on-chip |
STM32 counters12 |
|
DAC |
on-chip |
STM32 family DAC1 |
|
Display |
on-chip |
STM32 LCD-TFT display controller1 |
|
DMA |
on-chip |
STM32 DMA controller (V1)2 |
|
Ethernet |
on-chip |
ST STM32 Ethernet1 |
|
Flash controller |
on-chip |
STM32 Family flash controller1 |
|
on-board |
STM32 QSPI Flash controller supporting the JEDEC CFI interface1 |
||
GPIO & Headers |
on-chip |
STM32 GPIO Controller11 |
|
on-board |
GPIO pins exposed on Arduino Uno (R3) headers1 |
||
I2C |
on-chip |
||
Input |
on-board |
FT3267/FT5XX6/FT6XX6 capacitive touch panels1 |
|
on-board |
Group of GPIO-bound input keys1 |
||
Interrupt controller |
on-chip |
ARMv7-M NVIC (Nested Vectored Interrupt Controller)1 |
|
on-chip |
STM32 External Interrupt Controller1 |
||
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
Memory controller |
on-chip |
STM32 Flexible Memory Controller (FMC)1 |
|
on-chip |
STM32 Flexible Memory Controller (SDRAM controller)1 |
||
on-chip |
STM32 Battery Backed RAM1 |
||
MMC |
on-chip |
STM32 SDMMC Disk Access1 |
|
MMU / MPU |
on-chip |
ARMv7-M Memory Protection Unit (MPU)1 |
|
MTD |
on-chip |
STM32 flash memory1 |
|
on-board |
Fixed partitions of a flash (or other non-volatile storage) memory1 |
||
PHY |
on-chip |
This binding is to be used by all the usb transceivers which are built-in with USB IP2 |
|
Pin control |
on-chip |
STM32 Pin controller1 |
|
PWM |
on-chip |
||
QSPI |
on-chip |
STM32 QSPI Controller1 |
|
Reset controller |
on-chip |
STM32 Reset and Clock Control (RCC) Controller1 |
|
RNG |
on-chip |
STM32 Random Number Generator1 |
|
RTC |
on-chip |
STM32 RTC1 |
|
Sensors |
on-chip |
STM32 family TEMP node for production calibrated sensors with two calibration temperatures1 |
|
on-chip |
STM32 VREF+1 |
||
on-chip |
STM32 VBAT1 |
||
Serial controller |
on-chip |
||
on-chip |
STM32 UART4 |
||
SMbus |
on-chip |
STM32 SMBus controller4 |
|
SPI |
on-chip |
||
Timer |
on-chip |
ARMv7-M System Tick1 |
|
on-chip |
|||
USB |
on-chip |
STM32 OTGFS controller1 |
|
on-chip |
STM32 OTGHS controller1 |
||
Watchdog |
on-chip |
STM32 watchdog1 |
|
on-chip |
STM32 system window watchdog1 |
Pin Mapping
STM32F746G Discovery kit has 9 GPIO controllers. These controllers are responsible for pin muxing, input/output, pull-up, etc.
For more details please refer to 32F746G-DISCO board User Manual.
Default Zephyr Peripheral Mapping:
The STM32F746G Discovery kit features an Arduino Uno V3 connector. Board is configured as follows
UART_1 TX/RX : PA9/PB7 (ST-Link Virtual Port Com)
UART_6 TX/RX : PC6/PC7 (Arduino Serial)
I2C1 SCL/SDA : PB8/PB9 (Arduino I2C)
SDMMC_1 D0/D1/D2/D3/CK/CD/CMD: PC8/PC9/PC10/PC11/PC12/PC13/PD2
SPI2 NSS/SCK/MISO/MOSI : PA8/PI1/PB14/PB15 (Arduino SPI)
PWM_3_CH1 : PB4
ETH : PA1, PA2, PA7, PC1, PC4, PC5, PG11, PG13, PG14
USER_PB : PI11
LD1 : PI1
USB DM : PA11
USB DP : PA12
FMC SDRAM :
D0-D15 : PD14/PD15/PD0/PD1/PE7/PE8/PE9/PE10/PE11/PE12/PE13/PE14/PE15/PD8/PD9/PD10
A0-A11 : PF0/PF1/PF2/PF3/PF4/PF5/PF12/PF13/PF14/PF15/PG0/PG1
A14/A15 : PG4/PG5
SDNRAS/SDNCAS : PF11/PG15
NBL0/NBL1 : PE0/PE1
SDCLK/SDNWE/SDCKE0/SDNE0 : PG8/PH5/PC3/PH3
LTDC :
R0-R7 : PI15/PJ0/PJ1/PJ2/PJ3/PJ4/PJ5/PJ6
G0-G7 : PJ7/PJ8/PJ9/PJ10/PJ11/PK0/PK1/PK2
B0-B7 : PJ12/PK13/PJ14/PJ15/PK3/PK4/PK5/PK6
DE/CLK/HSYNC/VSYNC : PK7/PI14/PI12/PI13
System Clock
The STM32F746G 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 STM32F746G 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
STM32F746G Discovery kit includes an ST-LINK/V2 embedded debug tool interface.
Applications for the stm32f746g_disco board configuration 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 runner, so its installation is required.
Alternatively, OpenOCD or JLink can also be used to flash the board using
the --runner (or -r) option:
$ west flash --runner openocd
$ west flash --runner jlink
Flashing an application to STM32F746G
First, connect the STM32F746G 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 Hello World application.
# From the root of the zephyr repository
west build -b stm32f746g_disco samples/hello_world
west flash
Run a serial host program to connect with your board:
$ minicom -D /dev/ttyACM0
You should see the following message on the console:
Hello World! arm
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 stm32f746g_disco samples/hello_world
west debug