Directories

The table below provides a complete overview of the folders that contain the files related to the USB Component.

Directory	Description
./USB/Config	Configuration Files that are copied to the project when components are selected.
./USB/Driver	Drivers for USB Device and USB Host.
./USB/Include	Include files for USB Device and USB Host. Once a component is select an Include Path is set for the C/C++ compiler to this directory.
./USB/Lib	Library files for USB Component. The linker includes the library for the selected processor from this directory.
./USB/Template	files that can be added to the project to create the application-specific functionality for the USB Component.

Header Files

The API interface of the USB Component is provided in the header file rl_usb.h. The table below provides a complete overview of all header files.

Header File	Used by	Description
rl_usb.h	application code	API interface for the USB Device and USB Host component
rl_usbd_lib.h	internal	USB library internals for USB Device component
rl_usbh_lib.h	internal	USB library internals for USB Host component
usb_def.h	internal	Generic USB definitions
usb_adc.h	internal	USB definitions for ADC device class
usb_cdc.h	internal	USB definitions for CDC device class
usb_hid.h	internal	USB definitions for HID device class
usb_msc.h	internal	USB definitions for MSC device class
usbd_config.h	USBD_Config_n.c	Resource definitions for the USB Device component
usbh_config.h	USBH_Config_n.c	Resource definitions for the USB Host component

Library Files

The USB Component is provided in the following library files.

Library	Description
USB_CM0_B.lib	Library for devices based on Cortex-M0 and Cortex-M0+ in big-endian configuration.
USB_CM0_L.lib	Library for devices based on Cortex-M0 and Cortex-M0+ in little-endian configuration.
USB_CM3_B.lib	Library for devices based on Cortex-M3, Cortex-M4, and Cortex-M7 in big-endian configuration.
USB_CM3_L.lib	Library for devices based on Cortex-M4, Cortex-M4, and Cortex-M7 in little-endian configuration.

Note: The Run-Time Environment manager selects automatically the correct library required for a device.