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/** \file
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*
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* This file contains special DoxyGen information for the generation of the main page and other special
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* documentation pages. It is not a project source file.
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*/
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/** \mainpage XPLAIN UART Bridge/PDI Programmer Project
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*
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* \section Sec_Compat Project Compatibility:
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*
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* The following list indicates what microcontrollers are compatible with this project.
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*
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* \li AT90USB1287
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*
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* \section Sec_Info USB Information:
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*
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* The following table gives a rundown of the USB utilization of this project.
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*
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* <table>
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* <tr>
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* <td><b>USB Mode:</b></td>
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* <td>1) Device</td>
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* <td>2) Device</td>
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* </tr>
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* <tr>
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* <td><b>USB Class:</b></td>
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* <td>1) Communications Device Class (CDC)</td>
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* <td>2) Vendor Specific Class</td>
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* </tr>
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* <tr>
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* <td><b>USB Subclass:</b></td>
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* <td>1) Abstract Control Model (ACM)</td>
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* <td>2) N/A</td>
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* </tr>
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* <tr>
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* <td><b>Relevant Standards:</b></td>
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* <td>1) USBIF CDC Class Standard</td>
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* <td>2) Atmel AVRISP MKII Protocol Specification</td>
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* </tr>
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* <tr>
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* <td><b>Supported USB Speeds:</b></td>
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* <td>1) Full Speed Mode</td>
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* <td>2) Full Speed Mode</td>
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* </tr>
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* </table>
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*
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* \section Sec_Description Project Description:
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*
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* This project serves a dual purpose. When loaded into the USB AVR on the XPLAIN board, it will act as either a USB to Serial
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* converter for the XPLAIN's hardware USART (at a speed of 9600 baud), or an AVRStudio compatible PDI programmer for the XMEGA.
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* This project replaces the firmware preloaded onto the XPLAIN's onboard AT90USB1287 microcontroller.
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*
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* When power to the board is applied, the TDI pin (pin 9) of the USB AVR's JTAG port is read. If the pin is left high, the device
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* will enumerate as a regular COM port on the host, which can then be opened and data exchanged between the XMEGA and Host as if
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* the XMEGA was connected directly to the host's serial port. If the pin is pulled low by shorting it to GND (pin 10), the device
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* will enumerate as an AVRISP-MKII to the host, so that the XMEGA can be reprogrammed by AVRStudio or other compatible software
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* such as avrdude by connecting to the board as if it was an Atmel AVRISP-MKII programmer.
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*
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* After running this project in serial bridge mode for the first time on a new computer, you will need to supply the .INF file
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* located in this project project's directory as the device's driver when running under Windows. This will enable Windows to use
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* its inbuilt CDC virtual serial drivers, negating the need for custom drivers for the device. Other Operating Systems should
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* automatically use their own inbuilt CDC-ACM drivers.
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*
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* In serial bridge mode, the UART baud rate can be altered through the host terminal software to select a new baud rate - the default
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* baud is 9600. Note that parity, data bits and stop bits are fixed at none, eight and one respectively can cannot be altered. Changes
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* to the connection's parity, data bits or stop bits are ignored by the firmware. As the serial link between the controllers on the
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* XPLAIN is software emulated by the USB AVR, not all baud rates will work correctly.
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*
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* This project relies on files from the LUFA AVRISP-MKII project for compilation.
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*
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* \section Sec_Options Project Options
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*
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* The following defines can be found in this project, which can control the project behaviour when defined, or changed in value.
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*
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* <table>
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* <tr>
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* <th><b>Define Name:</b></th>
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* <th><b>Location:</b></th>
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* <th><b>Description:</b></th>
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* </tr>
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* <tr>
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* <td>LIBUSB_DRIVER_COMPAT</td>
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* <td>AppConfig.h</td>
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* <td>Define to switch to a non-standard endpoint scheme, breaking compatibility with AVRStudio under Windows but making
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* the code compatible with software such as avrdude (all platforms) that use the libUSB driver.
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*
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* \note This option is incompatible with \c RESET_TOGGLES_LIBUSB_COMPAT.</td>
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* </tr>
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* <tr>
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* <td>RESET_TOGGLES_LIBUSB_COMPAT</td>
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* <td>Makefile LUFA_OPTS</td>
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* <td>Define to make the /RESET line of the AVR toggle between Jungo and libUSB driver compatibility modes. Each time the AVR is
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* reset externally via the reset pin, the compatibility mode will be toggled. The compatibility mode is preserved between
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* power cycles and is not toggled via other forms of reset such as Watchdog or Brown Out.
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*
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* When this option is enabled, all board LEDs will flash twice on startup for Jungo compatibility mode, and five times for
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* libUSB compatibility mode.
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*
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* \note This option is incompatible with \c LIBUSB_DRIVER_COMPAT.</td>
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* </tr>
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* <tr>
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* <td>FIRMWARE_VERSION_MINOR</td>
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* <td>AppConfig.h</td>
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* <td>Define to set the minor firmware revision nunber reported to the host on request. By default this will use a firmware version compatible
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* with the latest Atmel IDE version, however if desired the reported minor value can be adjusted here.</td>
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* </tr>
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* </table>
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*/
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