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/** \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.
*/
/** \mainpage HID Class USB AVR Bootloader
*
* \section SSec_Compat Demo Compatibility:
*
* The following list indicates what microcontrollers are compatible with this demo.
*
* \li Series 7 USB AVRs (AT90USBxxx7)
* \li Series 6 USB AVRs (AT90USBxxx6)
* \li Series 4 USB AVRs (ATMEGAxxU4)
* \li Series 2 USB AVRs (AT90USBxx2, ATMEGAxxU2)
*
* \section SSec_Info USB Information:
*
* The following table gives a rundown of the USB utilization of this demo.
*
* <table>
* <tr>
* <td><b>USB Mode:</b></td>
* <td>Device</td>
* </tr>
* <tr>
* <td><b>USB Class:</b></td>
* <td>Human Interface Device Class (HID)</td>
* </tr>
* <tr>
* <td><b>USB Subclass:</b></td>
* <td>N/A</td>
* </tr>
* <tr>
* <td><b>Relevant Standards:</b></td>
* <td>USBIF HID Class Standard \n
* Teensy Programming Protocol Specification</td>
* </tr>
* <tr>
* <td><b>Supported USB Speeds:</b></td>
* <td>Low Speed Mode \n
* Full Speed Mode</td>
* </tr>
* </table>
*
* \section SSec_Description Project Description:
*
* This bootloader enumerates to the host as a HID Class device, allowing for device FLASH programming through
* the supplied command line software, which is a modified version of Paul's TeensyHID Command Line loader code
* from PJRC (used with permission). This bootloader is deliberately non-compatible with the proprietary PJRC
* HalfKay bootloader GUI; only the command line interface software accompanying this bootloader will work with it.
*
* Out of the box this bootloader builds for the AT90USB1287 with an 8KB bootloader section size, and will fit
* into 2KB of bootloader space for the Series 2 USB AVRs (ATMEGAxxU2, AT90USBxx2) or 4KB of bootloader space for
* all other models. If you wish to alter this size and/or change the AVR model, you will need to edit the MCU,
* FLASH_SIZE_KB and BOOT_SECTION_SIZE_KB values in the accompanying makefile.
*
* \warning <b>THIS BOOTLOADER IS NOT SECURE.</b> Malicious entities can recover written data, even if the device
* lockbits are set.
*
* \section Sec_Running Running the Bootloader
*
* This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
* datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
* fuse is cleared.
*
* \section Sec_Installation Driver Installation
*
* This bootloader uses the HID class driver inbuilt into all modern operating systems, thus no additional drivers
* need to be supplied for correct operation.
*
* \section Sec_HostApp Host Controller Application
*
* Due to licensing issues, the supplied bootloader is compatible with the HalfKay bootloader protocol designed
* by PJRC, but is non-compatible with the cross-platform loader GUI. A modified version of the open source
* cross-platform TeensyLoader application is supplied, which can be compiled under most operating systems. The
* command-line loader application should remain compatible with genuine Teensy boards in addition to boards using
* this custom bootloader.
*
* Once compiled, programs can be loaded into the AVR's FLASH memory through the following example command:
* \code
* hid_bootloader_cli -mmcu=at90usb1287 Mouse.hex
* \endcode
*
* \section Sec_KnownIssues Known Issues:
*
* \par After loading an application, it is not run automatically on startup.
* Some USB AVR boards ship with the BOOTRST fuse set, causing the bootloader
* to run automatically when the device is reset. In most cases, the BOOTRST
* fuse should be disabled and the HWBE fuse used instead to run the bootloader
* when needed.
*
* \section SSec_Options Project Options
*
* The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
*
* <table>
* <tr>
* <td>
* None
* </td>
* </tr>
* </table>
*/
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