A step-by-step walkthrough of setting up a USB Virtual COM Port (CDC class) on an STM32H7 microcontroller using STM32CubeIDE. Covers hardware schematic considerations (USB differential pair, ESD protection, CC pull-down resistors, crystal vs crystal-less USB), CubeIDE peripheral and clock configuration, and firmware implementation for both transmitting and receiving data via the CDC driver. Includes practical code examples using snprintf, CDC_Transmit_HS, and a receive callback pattern, verified with HTerm serial monitor on Windows.
•25m watch time
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