ART-Pi2
Overview
The ART-Pi2 is an open-source hardware platform designed by the RT-Thread team specifically for embedded software engineers and open-source makers, offering extensive expandability for DIY projects.
Key Features
STM32H7R7L8HxH microcontroller featuring 64 Kbytes of Flash and 620 Kbytes of SRAM in an TFBGA225 package
On-board ST-LINK/V2.1 debugger/programmer
SDIO TF Card slot
SDIO WIFI:CYWL6208
HDC UART BuleTooth:CYWL6208
32-MB HyperRAM
64-MB HyperFlash
One Power LED (blue) for 3.3 V power-on
Two user LEDs blue and red
Two ST-LINK LEDs: blue and red
Two push-buttons (user and reset)
Board connectors:
USB OTG with Type-C connector
RGB888 FPC connector
More information about the board can be found at the ART-Pi2 website [1].
Hardware
ART-Pi2 provides the following hardware components:
The STM32H7R7xx devices are a high-performance microcontrollers family (STM32H7 Series) based on the high-performance Arm® Cortex®-M7 32-bit RISC core. They operate at a frequency of up to 600 MHz.
More information about STM32H7R7 can be found here:
Supported Features
The art_pi2 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.
art_pi2/stm32h7r7xx target
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M7 CPU1 |
|
ADC |
on-chip |
STM32 ADC2 |
|
Clock control |
on-chip |
STM32H7RS RCC (Reset and Clock controller)1 |
|
on-chip |
STM32 HSE Clock1 |
||
on-chip |
STM32 HSI Clock1 |
||
on-chip |
|||
on-chip |
STM32 LSE Clock1 |
||
on-chip |
|||
on-chip |
STM32 Clock multiplexer1 |
||
on-chip |
STM32 Microcontroller Clock Output (MCO)2 |
||
Counter |
on-chip |
STM32 counters10 |
|
Flash controller |
on-chip |
STM32 Family flash controller1 |
|
GPIO & Headers |
on-chip |
STM32 GPIO Controller12 |
|
I2C |
on-chip |
STM32 I2C V2 controller3 |
|
I2S |
on-chip |
STM32H7 I2S controller1 |
|
Input |
on-board |
Group of GPIO-bound input keys1 |
|
Interrupt controller |
on-chip |
ARMv7-M NVIC (Nested Vectored Interrupt Controller)1 |
|
on-chip |
STM32H7RS External Interrupt Controller1 |
||
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
MMU / MPU |
on-chip |
ARMv7-M Memory Protection Unit (MPU)1 |
|
MTD |
on-chip |
STM32 flash memory1 |
|
PHY |
on-chip |
This binding is to be used by all the usb transceivers which are built-in with USB IP1 |
|
Pin control |
on-chip |
STM32 Pin controller1 |
|
PWM |
on-chip |
STM32 PWM8 |
|
Reset controller |
on-chip |
STM32 Reset and Clock Control (RCC) Controller1 |
|
RNG |
on-chip |
STM32 Random Number Generator1 |
|
Sensors |
on-chip |
STM32 family TEMP node for production calibrated sensors with two calibration temperatures1 |
|
on-chip |
STM32 VBAT1 |
||
on-chip |
STM32 VREF+1 |
||
Serial controller |
on-chip |
STM32 USART3 |
|
on-chip |
|||
on-chip |
STM32 LPUART1 |
||
SPI |
on-chip |
STM32H7 SPI controller5 |
|
SRAM |
on-chip |
Generic on-chip SRAM1 |
|
Timer |
on-chip |
ARMv7-M System Tick1 |
|
on-chip |
STM32 timers11 |
||
on-chip |
STM32 low-power timer (LPTIM)1 |
||
USB |
on-chip |
STM32 OTGFS controller1 |
|
Watchdog |
on-chip |
STM32 watchdog1 |
|
on-chip |
STM32 system window watchdog1 |
||
xSPI |
on-chip |
STM32 XSPI Controller2 |
Default Zephyr Peripheral Mapping:
The ART-Pi2 board features a On-board ST-LINK/V2.1 debugger/programmer. Board is configured as follows:
UART4 TX/RX : PD1/PD0 (ST-Link Virtual Port Com)
LED1 (red) : PO1
LED2 (blue) : PO5
USER PUSH-BUTTON : PC13
System Clock
ART-Pi2 System Clock could be driven by an internal or external oscillator, as well as the main PLL clock. By default, the System clock is driven by the PLL clock at 250MHz, driven by an 24MHz high-speed external clock.
Serial Port
ART-Pi2 board has 4 UARTs and 3 USARTs plus one LowPower UART. The Zephyr console output is assigned to UART4. Default settings are 115200 8N1.
Backup SRAM
In order to test backup SRAM you may want to disconnect VBAT from VDD. You can
do it by removing SB13 jumper on the back side of the board.
Programming and Debugging
The art_pi2 board supports the runners and associated west commands listed below.
| flash | debug | rtt | debugserver | attach | |
|---|---|---|---|---|---|
| pyocd | ✅ | ✅ (default) | ✅ | ✅ | ✅ |
| stm32cubeprogrammer | ✅ (default) |
ART-Pi2 board includes an ST-LINK/V2.1 embedded debug tool interface.
Note
Check if your ST-LINK V2.1 has newest FW version. It can be done with STM32CubeProgrammer [4]
Flashing
The board is configured to be flashed using west STM32CubeProgrammer [4] runner, so its installation is required.
Flashing an application to ART-Pi2
First, connect the art_pi2 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.
Run a serial host program to connect with your art_pi2 board.
$ minicom -b 115200 -D /dev/ttyACM0
or use screen:
$ screen /dev/ttyACM0 115200
Build and flash the application:
# From the root of the zephyr repository
west build -b art_pi2 samples/hello_world
west flash
You should see the following message on the console:
*** Booting Zephyr OS build v4.1.0-1907-g415ab379a8af ***
Hello World! art_pi2/stm32h7r7xx
Blinky example can also be used:
# From the root of the zephyr repository
west build -b art_pi2 samples/basic/blinky
west flash
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 art_pi2 samples/hello_world
west debug