UNIVERSAL SERIAL BUS EMULATION OF A HOST CONNECTION

摘要

A system and method for emulating a universal serial bus device is disclosed. An example embodiment may include an emulated USB (EUP) device that can emulate a host side of a USB connection. This device may have a microcontroller that is programmable with software to emulate a host connection of a physical USB device. In order to emulate a host connection of a USB device, the EUP device may configure USB host mode bus signals, initiate USB frames on the bus, indicate device status to an emulation process, and relay packets between a device and the emulation process.

主权项

1. An emulating universal serial bus (USB) hardware device that emulates a host connection of a USB device in a computing system, the emulating USB hardware device comprising:
a memory to store configuration descriptors; a USB to serial interface chip; and one or more microcontrollers with USB support that are programmable with software to emulate a host connection of a physical USB device by receiving software that:
configures USB host mode bus signals,initiates USB frames on a serial bus,indicates a device connection status to a device emulation process, andrelays packets between a physical USB device and the device emulation process.