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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.<br />
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== Summary ==<br />
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).<br />
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== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL16635 WSAL16635 – CoreH743I, STM32 STM32H743IIT6 MCU core board]<br />
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== Technical overview ==<br />
* Main processor: STM32H743IIT6.<br />
* An ST-Link V2 is used for programming via JTAG/SWD.<br />
* For serial output, the OTG_JMP jumper must be removed; the board integrates a CP2102 chip for USB-to-UART conversion.<br />
* Serial parameters: 115200 baud, 8 data bits, 1 stop bit, no parity, no flow control.<br />
* After programming, the reset button must be pressed to run the code.<br />
* LED example: LEDs light up in sequence.<br />
* KEY example: Pressing the joystick button turns LED1 off; releasing it turns LED1 back on.<br />
* EXTI example: A GPIO interrupt changes the state of LED1 when the CTR button is pressed.<br />
* USART examples: Three variants – polling, interrupt, and DMA – test serial communication.<br />
* FDCAN examples: Internal loopback and communication between two CAN modules via CAN1/CAN2 interfaces.<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
UART Printf Example: retarget the C library printf function to the UART<br />
****UART-Hyperterminal communication based on IT ****<br />
****UART-Hyperterminal communication based on DMA ****<br />
***************I2C Example*******************************<br />
***************FDCNA Example*******************************<br />
***************SPI Example*******************************<br />
***************QuadSPi Example*******************************<br />
******** ADC Example ********<br />
******** COMP Example ********<br />
******** OPAMP Example ********<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* The demo codes were created with specific tool versions; compatibility issues may occur with other versions.<br />
* Some examples require additional modules (e.g., AT24/FM24, 10_DOF_IMU_Sensor, W25QXX DataFlash Board, WM8960 Audio Board) that must be purchased separately.<br />
* 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.<br />
* The FAQ mentions possible compilation errors when using Keil V6 instead of V5; this requires human verification of the exact steps.<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/CoreH743I OpenH743I-C - Waveshare Wiki]<br />
* Source revision: 110372<br />
* Captured: 2026-08-31T03:44:51+00:00<br />
* SHA-256: <code>1a5db9edffb1bcb6e5f44d3734b0f8a70a2fb3a995e712800d38ae852a510cdd</code></div>JWTechPublisher