cdc-acm

USB3 SuperSpeed (5Gbps) and SuperSpeedPlus (10Gbps) for FPGAs without external chip: PHY + Device Core in LiteX.

Single/Multi-channel Full Speed USB interface for FPGA and ASIC designs

Efficient USB device stack designed for embedded systems. Includes support for Audio, CDC-ACM, CDC-EEM, HID, MSC, and Vendor classes.

Efficient USB host stack for embedded systems equipped with a USB host or OTG controller. Includes many class drivers such as MSC, HID, CDC-ACM, and USB2Ser.

Drop In USB CDC ACM core for iCE40 FPGA

Install the CDC ACM and USB to Serial Modules for the Jetson TX1 or Jetson TX2 Development Kit

"Not Insane" USB library for STM32F103xx MCUs

Full Speed USB DFU interface for FPGA and ASIC designs

Virtual Serial Port (via USB-IP) to TCP Socket

USB CDC ACM implementation for CH32V307 Evaluation Board

USB CDC ACM Arduino board library for use with the USB Host Shield 2.0 library

Deterministic host-testable USB HID + CDC-ACM composite device stack in portable C11.

STM32F103 Blue Pill as a composite USB device — CDC ACM serial + UVC camera — built from raw registers, no HAL, no middleware.

Engineering source preview of a Windows C++ virtual USB CDC COM cable and loopback tool using Vdevice. Offline checks pass; live COM startup remains under investigation.

USB dongle that keeps your computer awake. CH552 composite HID (keyboard + mouse) + CDC, touch-key mode switching, WS2812 status LED. Firmware, PCB and 3D-printed case included.

USB OTG CDC-ACM transport for Klipper firmware on STM32.

TinyUSB USB host CDC/MSC/HID example for the Alif Ensemble E7 DevKit, bare-metal

zephyr-rtos demo

Record and play back sessions on a DNA device.

Linux daemon for the darkFlash DH360D AIO pump LCD (USB 1f3a:0008). Reverse-engineered serial protocol, systemd service.