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Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex

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'''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.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL16884 WSAL16884 – OpenH743I-C Standard, STM32H7 Development Board]
* [https://shop.jw-tech.eu/p/WSAL16885 WSAL16885 – OpenH743I-C Package A, STM32H7 Development Board]

== 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:'''
<syntaxhighlight lang="text">
welcome to www.waveshare.com !!!
STM32H743IIT6
Internal_LoopBack : 1234567
CAN1->CAN2 : 1234567
W25Qxxx ID is : 0xEF 0x17
W25Q128FV QuadSPI Test OK
</syntaxhighlight>

== 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 ==
* [https://www.waveshare.com/wiki/OpenH743I-C OpenH743I-C - Waveshare Wiki]
* Source revision: 110372
* Captured: 2026-08-31T03:54:27+00:00
* SHA-256: <code>acb7f21ad8c8d2d6b14eeb3454bd623c58a7146b0e270a87499a82741fa08df4</code>

WSAL16884 – OpenH743I-C/en - Versionsgeschichte

JWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex