3.3 USB Device Stack Files

The USB device stack files are available as part of ASF in Atmel® Studio.

To list relevant USB examples in Atmel Studio 7, select "New Example Project..." from the start screen or the File menu (File → New → Example Project...). The list of examples can be reduced to list only USB by either searching for USB in the search field or select USB from the Technology tab.

Note: This USB device stack does not apply to ASF examples with names containing "from ASF V1".

Table 3-1. Common Files for all AVR Products
	Files	Paths
Defines USB constant	usb_protocol.h (from usb.org)	common/services/usb/
Defines USB constant	usb_atmel.h (from Microchip)	common/services/usb/
UDC files	udc.c/h	common/services/usb/udc/
	udc_desc.h
	udi.h
	udd.h
Classes protocols files	usb_protocol_foo.h	common/services/usb/class/foo/
UDI files	udi_foo.c/h	common/services/usb/class/foo/device/
	udi_foo_desc.c
	udi_foo_conf.h

Table 3-2. UDD Files Depending on Selected AVR Products
	Files	Paths
AVR32	usbb_device.c/h	avr32/drivers/usbb/
	usbb_otg.h	avr32/drivers/usbb/
	usbc_device.c/h	avr32/drivers/usbc/
	usbc_otg.h	avr32/drivers/usbc/
XMEGA	usb.c/h	xmega/drivers/usb/
MEGA AVR	usb.c/h	mega/drivers/usb/

Table 3-3. Specific File for Each Application
	Files	Paths
Application file (This configuration file is mandatory)	usb_conf.h	user/application defined location, e.g. application config folder