WSAL16635 – CoreH743I/en

Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

The OpenH743I-C is an STM32 development board based on the STM32H743IIT6 microcontroller. It provides numerous interfaces for peripheral modules, including UART, SPI, I2C, FDCAN, QUADSPI, I2S, ADC/DAC, and USB FS/HS. The provided demos use the HAL library (STM32CubeMX v5.0, KEIL MDK v5.12, firmware library v1.3.2).

Related products at JW Tech

WSAL16635 – CoreH743I, STM32 STM32H743IIT6 MCU core board

Technical overview

Main processor: STM32H743IIT6.
An ST-Link V2 is used for programming via JTAG/SWD.
For serial output, the OTG_JMP jumper must be removed; the board integrates a CP2102 chip for USB-to-UART conversion.
Serial parameters: 115200 baud, 8 data bits, 1 stop bit, no parity, no flow control.
After programming, the reset button must be pressed to run the code.
LED example: LEDs light up in sequence.
KEY example: Pressing the joystick button turns LED1 off; releasing it turns LED1 back on.
EXTI example: A GPIO interrupt changes the state of LED1 when the CTR button is pressed.
USART examples: Three variants – polling, interrupt, and DMA – test serial communication.
FDCAN examples: Internal loopback and communication between two CAN modules via CAN1/CAN2 interfaces.

Commands and examples – verify before use:

UART Printf Example: retarget the C library printf function to the UART
****UART-Hyperterminal communication based on IT ****
****UART-Hyperterminal communication based on DMA ****
***************I2C Example*******************************
***************FDCNA Example*******************************
***************SPI Example*******************************
***************QuadSPi Example*******************************
******** ADC Example ********
******** COMP Example ********
******** OPAMP Example ********

Notes and version constraints

The demo codes were created with specific tool versions; compatibility issues may occur with other versions.
Some examples require additional modules (e.g., AT24/FM24, 10_DOF_IMU_Sensor, W25QXX DataFlash Board, WM8960 Audio Board) that must be purchased separately.
For USB recognition issues, commenting out certain lines in main.c or changing the clock division may be necessary – the exact code lines are not fully specified in the source text.
The FAQ mentions possible compilation errors when using Keil V6 instead of V5; this requires human verification of the exact steps.

Source and revision record

OpenH743I-C - Waveshare Wiki
Source revision: 110372
Captured: 2026-08-31T03:44:51+00:00
SHA-256: 1a5db9edffb1bcb6e5f44d3734b0f8a70a2fb3a995e712800d38ae852a510cdd