emUSB does not contain any hardware dependencies. These are encapsulated through a hardware abstraction layer, which consists of the interface functions described in this chapter. All of these functions for a particular USB controller are typically located in a single file, the USB driver. Drivers for hardware which has already been tested with emUSB are available.

Range of supported USB hardware

The interface has been designed in such a way that it should be possible to use the most common USB device controllers. This includes USB 1.1 (full speed) controllers, USB 2.0 (high speed) controllers, both as external chips and as part of microcontrollers.

Available USB drivers

The following device drivers are available for emUSB: