This embedded USB Communications Device Class – Abstract Control Model (CDC-ACM) class driver is used for connecting legacy serial ports or modems over a USB link to a host system.

The package is a function device implementation of this class. This allows a device to connect to a host system and appear to the host system as one or more locally connected serial ports.

Features
  • Conforms to the HCC Advanced Embedded Framework.
  • Designed for integration with both RTOS and non-RTOS based systems.
  • Supports all devices that conform to the USB CDC-ACM specification.
  • Supports all devices that conform to the HCC Media Driver Interface Specification.
  • Compatible with sample device files produced by using the HCC USB Device Descriptor Generator.
  • Uses a system of callbacks for user-specified events.
Architecture

On the embedded device side, this serial port or modem can be either a real device or a virtual device. This class driver is effectively a library. It provides a set of function calls for an application to use to send and receive data through the serial port.