 USB device descriptors for a single interface | The following structures provide the USB device descriptors required for USB Device with a single interface CDC |
 Standard I/O (stdio) | Common standard I/O driver that implements the stdio read and write functions on AVR and SAM devices |
  USB/CDC Standard I/O (stdio) | Standard I/O (stdio) management component that implements a stdio USB CDC interface on AVR devices |
| XMEGA-A3BU Xplained board | |
| Feature definitions | |
| Configuration options | |
| Generic board support | The generic board support module includes board-specific definitions and function prototypes, such as the board initialization function |
| XMEGA compiler driver | Compiler abstraction layer and code utilities for 8-bit AVR |
| Assembler Support | This group provides a good handful of macros intended to smooth out the differences between various assemblers, similar to what compiler.h does for compilers, except that assemblers tend to be much less standardized than compilers |
| Macro Repeat | |
| Stringize | |
| Token Paste | |
| Program memory | |
| Status Codes | |
| Global interrupt management | This is a driver for global enabling and disabling of interrupts |
| Deprecated interrupt definitions | |
| Atmel part identification macros | This collection of macros identify which series and families that the various Atmel parts belong to |
| AVR UC3 parts | |
| AVR XMEGA parts | |
| megaAVR parts | |
| SAM parts | |
| General Purpose Input/Output | This is the common API for GPIO |
| Common IOPORT API | See Quick start guide for the common IOPORT service |
| Sensors Xplained Extension Boards | This file contains definitions and services related to the features of the SENSORS_XPLAINED_XXX Xplained boards |
| Sensors Xplained Extension Board Configuration | The extension board configuration defines constants identifying the sensors, bus interface, I/O pin mappings, and sensor device signals from an Atmel Sensor board (ATAVRSBPR1, ATAVARSBIN1, ATAVARSBIN2, and so on) to the development platform |
| Clock Management | |
| Generic Clock Management | Generic clocks are configurable clocks which run outside the system clock domain |
| Oscillator Management | This group contains functions and definitions related to configuring and enabling/disabling on-chip oscillators |
| PLL Management | This group contains functions and definitions related to configuring and enabling/disabling on-chip PLLs |
| System Clock Management | See Quick Start Guide for the System Clock Management service (XMEGA) |
| Configuration Change Protection | See Quick start guide for CCP driver |
| XMEGA reset cause | See reset_cause_quickstart |
| NVM driver | See Quick Start Guide for the XMEGA NVM Driver |
| NVM driver generic module handling | Support functions for the NVM driver |
| NVM driver signature handling | Handling of signature rows |
| NVM driver EEPROM handling | Functions for handling internal EEPROM memory |
| NVM driver flash handling | Functions for handling internal flash memory |
| NVM driver fuse and lock bits handling | Functions for reading fuses and writing lock bits |
| Sleep manager | The sleep manager is a service for ensuring that the device is not put to sleep in deeper sleep modes than the system (e.g., peripheral drivers, services or the application) allows at any given time |
| Sleep controller driver | This is a low-level driver implementation for the AVR XMEGA sleep controller |
| USB Stack | This stack includes the USB Device Stack, USB Host Stack and common definitions |
| USB Stack Device | This module includes USB Stack Device implementation |
| USB Device Controller (UDC) | The UDC provides a high-level abstraction of the usb device |
| Implementation of UDC | Internal implementation |
| USB Device Controller (UDC) - Prerequisites | Common prerequisites for all USB devices |
| USB Device Controller (UDC) - Example code | Common example code for all USB devices |
| USB Device Controller (UDC) - Workflow | Common workflow for all USB devices |
| USB Device Descriptor | |
| USB Device Driver (UDD) | The UDD driver provides a low-level abstraction of the device controller hardware |
| Xmega USB Device Driver | USBC low-level driver for USB Device mode |
 USB Device Interface (UDI) | The UDI provides a common API for all classes, and this is used by UDC for the main control of USB Device interface |
 USB Device Interface (UDI) for Communication Class Device (CDC) | Common APIs used by high level application to use this USB class |
| Interface with USB Device Core (UDC) | Structures and functions required by UDC |
| Implementation of UDI CDC | Class internal implementation |
| USB interface descriptors | The following structures provide predefined USB interface descriptors |
| Atmel USB Identifiers | This module defines Atmel PID and VIDs constants |
| USB Protocol Definitions | This module defines constants and data structures provided by the USB 2.0 specification |
| Communication Device Class Definitions | |
| Sensors Platform Board Configuration | Configuration constants defined for the platform are used to enable peripherals and map I/O pin interfaces between sensors and the development board they are paired with |
| Sensor Device Stack | The sensor device service provides high-level interfaces and binary driver libraries for sensor devices on systems built around Atmel microcontrollers |
| Common Sensor API | |
| Busy-Wait Delay Routines | This module provides simple loop-based delay routines for those applications requiring a brief wait during execution |
| Two Wire-interface(TWI) | This is the common API for TWIs |
| TWI - Two-Wire Interface | See Quick start guide for XMEGA TWI driver |
| TWI Master | |
| TWI Slave | |
1.8.5