WSAL16884 – OpenH743I-C/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 a modular development board featuring the STM32H743IIT6 as its main processor. It provides numerous peripheral interfaces (UART, SPI, I2C, CAN, USB, etc.) and is programmed via an ST-Link V2 over JTAG/SWD.

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Technical overview

Main controller: STM32H743IIT6 on the CoreH743I module.
The board is available in two variants: Standard (WSAL16884) and Package A (WSAL16885).
Demo codes use HAL libraries generated by STM32CubeMX v5.0, edited in KEIL MDK v5.12; firmware library version used: v1.3.2.
Programming requires an ST-Link V2 connected via the JTAG/SWD interface.
For serial output, remove the OTG_JMP jumper and connect USART1 to the PC with a USB cable; the onboard CP2102 chip acts as a USB-to-UART bridge.
Serial settings for evaluation: 115200 baud, 8 data bits, 1 stop bit, no parity, no flow control.
After downloading the example, press the reset button to run the code.
For the LED example, connect the LCD_JMP jumpers; for the KEY/EXTI examples, connect both KEY_JMP and LED_JMP.
I2C examples require external modules (e.g., AT24CXX or 10_DOF_IMU_Sensor (D)) connected to the I2C4 interface.
The W25QXX DataFlash can be tested via both SPI and QUADSPI; expected outputs show device ID, erase, write, and read operations.

Commands and examples – verify before use:

welcome to www.waveshare.com !!!
STM32H743IIT6
Internal_LoopBack : 1234567
CAN1->CAN2 : 1234567
W25Qxxx ID is : 0xEF 0x17
W25Q128FV QuadSPI Test OK

Notes and version constraints

The demo codes are tied to a specific toolchain (STM32CubeMX v5.0, KEIL MDK v5.12, HAL v1.3.2); deviations may cause compilation errors.
Some examples require external add-on modules (AT24CXX, IMU sensor, audio board) that may not be included in the base package.
In USB test cases, insufficient power supply from the PC can cause issues; using an external 5 V power source is recommended.
If the USB3300 is not recognized, two lines in main.c must be commented out and the clock division may need to be changed to 4 or 5 – these steps are version-sensitive and require manual verification.
Compilation errors often occur when choosing the V6 compilation version instead of the recommended V5.
If data cannot be received on the serial port PA9/PA10, remove the PA9 VBUS jumper on the core board.
All described hardware settings (jumpers, modules) should be verified before running each example, as they vary by example.

Source and revision record

OpenH743I-C - Waveshare Wiki
Source revision: 110372
Captured: 2026-08-31T03:54:27+00:00
SHA-256: acb7f21ad8c8d2d6b14eeb3454bd623c58a7146b0e270a87499a82741fa08df4