=================== Waveshare OpenH743I =================== The OpenH743I-C is an STM32 development board with STM32H743IIT6. It comes with a rich expansion interface to support access to various peripheral modules. .. note:: This board has very poor signal integrity. Peripherals =========== SDMMC ----- The SDMMC1 interface seems not to work correctly with clock frequencies higher than 20 MHz. USBHS ----- The reset pin on the ULPI port must be connected to the PE2 pin of the MCU. If it's not connected, ULPI interface may not work correctly without power reset.