/** \file
*
* This file contains special DoxyGen information for the generation of the main page and other special
* documentation pages. It is not a project source file.
*/
/**
* \page Page_AlternativeStacks Alternative USB AVR Stacks
*
* LUFA is not the only stack available for the USB AVRs, although it is perhaps the best (see \ref Page_WhyUseLUFA).
* In the interests of completeness and user choice, other known USB AVR stacks are listed here.
*
* \section Sec_HardwareStacks Hardware USB AVR Stacks
* These are the known alternative USB stacks which are designed for and run exclusively on the USB AVR series microcontrollers,
* which contain on-chip USB controller hardware for maximum features and speed.
*
* - Name: Atmel USB AVR Stack (Atmel Inc.) \n
* Cost: Free \n
* License: Atmel Limited License (see Atmel download for details) \n
* Website: http://atmel.com/dyn/products/app_notes.asp?family_id=607#USB \n
* Description: This is the official Atmel USB AVR stack, for their 8-bit USB AVR lineup. Each series of
* USB AVR is separated into a separate download stack, which is both AVR-GCC and IAR compatible.
*
* - Name: Dr. Stefan Salewski's AT90USB1287 Stack (Dr. Stefan Salewski) \n
* Cost: Free \n
* License: GPL \n
* Website: http://www.ssalewski.de/AT90USB_firmware.html.en \n
* Description: This is a GPL'd library specifically designed for the AT90USB1287, by Dr. Stefan Salewski, a
* German Physicist. It compiles for AVR-GCC and can potentially be modified to work on other USB
* AVR models.
*
* - Name: FreakUSB Stack (FreakLabs) \n
* Cost: Free \n
* License: Modified BSD \n
* Website: http://freaklabs.org/index.php/FreakUSB-Open-Source-USB-Device-Stack.html \n
* Description: An open source simple USB stack for a selection of the USB AVRs. Contains a sample class driver
* for the CDC-ACM class, however other class driver implementations are also possible.
*
* - Name: PJRC Teensy Stack (Paul Stoffregen) \n
* Cost: Free \n
* License: BSD \n
* Website: http://www.pjrc.com/teensy/usb_debug_only.html \n
* Description: Not so much a complete stack as a collection of USB enabled demos, this library is specifically
* designed for the PJRC Teensy line of USB AVRs, and thus may need to be modified for other USB AVR
* chips. These minimal code samples shows the inner workings of the USB controller, without all the
* abstraction present in most other USB AVR stacks.
*
* \section Sec_SoftwareStacks Software AVR Stacks
* These are the known alternative USB stacks which can run on regular AVR models, lacking dedicated hardware USB controllers
* via a bit-banged (emulated) version of the USB protocol. They are limited in their capabilities due to the cycles required
* to be dedicated to managing the USB bus, but offer a cheap way to implement USB functionality into a design.
*
* - Name: AVR309: Software USB (Atmel) \n
* Cost: Free \n
* License: None Stated \n
* Website: http://www.atmel.com/dyn/Products/app_notes.asp?family_id=607 \n
* Description: Atmel's official software USB implementation, an Application Note containing work by Igor Cesko. This
* is a minimal assembly-only implementation of software USB, providing HID functionality. Less compile
* options than V-USB (see below).
*
* - Name: V-USB (Objective Development) \n
* Cost: Free for some uses, see website for licensing \n
* License: Dual GPL2/Custom \n
* Website: http://www.obdev.at/products/vusb/index.html \n
* Description: Well regarded and complete USB 1.1 software stack for several AVR models, implementing Low Speed HID.
* Used in many commercial and non-commercial designs, with user-submitted projects available for viewing
* on the company's website. Uses C language code mixed with assembly for time-critical sections.
*/