STM32F429I Discovery
Overview
The STM32F429I-DISC1 Discovery kit features an ARM Cortex-M4 based STM32F429ZI MCU with a wide range of connectivity support and configurations. Here are some highlights of the STM32F429I-DISC1 board:
STM32 microcontroller in LQFP144 package
Extension header for all LQFP144 I/Os for quick connection to prototyping board and easy probing
On-board ST-LINK/V2-B debugger/programmer with SWD connector
Flexible board power supply:
ST-LINK/V2-1 USB connector
User USB FS connector
VIN from Arduino* compatible connectors
Two push-buttons: USER and RESET
USB OTG FS with micro-AB connector
2.4-inch QVGA LCD with MIPI DSI interface and capacitive touch screen
64Mbit SDRAM
L3GD20, ST-MEMS motion sensor 3-axis digital output gyroscope
Six LEDs
LD1 (red/green) for USB communication
LD2 (red) for 3.3 V power-on
Two user LEDs: LD3 (green), LD4 (red)
Two USB OTG LEDs: LD5 (green) VBUS and LD6 (red) OC (over-current)
More information about the board can be found at the STM32F429I-DISC1 website.
Hardware
The STM32F429I-DISC1 Discovery kit provides the following hardware components:
STM32F429ZIT6 in LQFP144 package
ARM® 32-bit Cortex® -M4 CPU with FPU
180 MHz max CPU frequency
VDD from 1.8 V to 3.6 V
2 MB Flash
256+4 KB SRAM including 64-Kbyte of core coupled memory
GPIO with external interrupt capability
3x12-bit ADC with 24 channels
2x12-bit D/A converters
RTC
Advanced-control Timer
General Purpose Timers (17)
Watchdog Timers (2)
USART/UART (4/4)
I2C (3)
SPI (6)
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 STM32F429ZI can be found here:
Supported Features
The Zephyr stm32f429i_disc1 board configuration supports the following hardware features:
Interface |
Controller |
Driver/Component |
|---|---|---|
NVIC |
on-chip |
nested vector interrupt controller |
UART |
on-chip |
serial port-polling; serial port-interrupt |
PINMUX |
on-chip |
pinmux |
GPIO |
on-chip |
gpio |
PWM |
on-chip |
pwm |
I2C |
on-chip |
i2c |
SPI |
on-chip |
spi |
FMC |
on-chip |
memc (SDRAM) |
OTG_HS |
on-chip |
usbotg_hs |
Other hardware features are not yet supported on Zephyr porting.
The default configuration can be found in boards/st/stm32f429i_disc1/stm32f429i_disc1_defconfig
Pin Mapping
The STM32F429I-DISC1 Discovery kit has 8 GPIO controllers. These controllers are responsible for pin muxing, input/output, pull-up, etc.
For more details please refer to STM32F429I-DISC1 board User Manual.
Default Zephyr Peripheral Mapping:
UART_1_TX : PA9
UART_1_RX : PA10
USER_PB : PA0
LD3 : PG13
LD4 : PG12
I2C_1_SCL : PB8
I2C_1_SDA : PB9
I2C_2_SCL : PB10
I2C_2_SDA : PB11
I2C_3_SCL : PA8
I2C_3_SDA : PC9
SPI_5_CS : PF6
SPI_5_SCK : PF7
SPI_5_MISO : PF8
SPI_5_MOSI : PF9
OTG_HS_ID : PB12
OTG_HS_DM : PB14
OTG_HS_DP : PB15
System Clock
The STM32F429I-DISC1 System Clock could 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 168MHz, driven by an 8MHz high speed external clock.
Serial Port
The STM32F429I-DISC1 Discovery kit has up to 8 UARTs. The Zephyr console output is assigned to UART1. The default communication settings are 115200 8N1.
USB Port
The STM32F429I-DISC1 Discovery kit has a USB FS capable Micro-B port. It is connected to the on-chip OTG_HS peripheral, but operates in FS mode only since no HS PHY is present. The board supports device and host OTG operation, but only device mode has been tested with Zephyr at this time.
Programming and Debugging
Applications for the stm32f429i_disc1 board configuration can be built
and flashed in the usual way (see Building an Application and
Run an Application for more details).
Flashing
The STM32F429I-DISC1 Discovery kit includes a ST-LINK/V2-B embedded debug tool interface. This interface is supported by the openocd version included in Zephyr SDK.
Flashing an application to STM32F429I-DISC1
The board is configured to be flashed using west OpenOCD runner.
Alternatively, you can use STM32CubeProgrammer (after installing it) using the --runner
(or -r) option:
$ west flash --runner stm32cubeprogrammer
First, connect the STM32F429I-DISC1 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 stm32f429i_disc1 samples/hello_world
west flash
Run a serial host program to connect with your board:
$ minicom -D /dev/ttyACM0
Then, press the RESET button (The black one), you should see the following message:
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 stm32f429i_disc1 samples/hello_world
west debug