Merged upstream arduino branch

author: Cristian Maglie <c.maglie@bug.st> 2012-10-18 15:50:09 +0200
committer: Cristian Maglie <c.maglie@bug.st> 2012-10-18 15:50:09 +0200
commit: 6a45ba48ab1f2d0a168373a02ba7fded40a3470e (patch)
tree: 163448869b4dfcbce95dc877ffff61a709fba6b6 /firmwares/atmegaxxu2
parent: c313b54c00635f1be14a1b09617dc9b8b562e589 (diff)
parent: 6d296e0faba5b9910084c307a3f93cb2653bf7f8 (diff)
26 files changed, 7099 insertions, 0 deletions
diff --git a/firmwares/atmegaxxu2/Arduino-COMBINED-dfu-usbserial-atmega16u2-Mega2560-Rev3.hex b/firmwares/atmegaxxu2/Arduino-COMBINED-dfu-usbserial-atmega16u2-Mega2560-Rev3.hex
new file mode 100644
index 0000000..7720cf4
--- /dev/null
+++ b/firmwares/atmegaxxu2/Arduino-COMBINED-dfu-usbserial-atmega16u2-Mega2560-Rev3.hex
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diff --git a/firmwares/atmegaxxu2/Arduino-COMBINED-dfu-usbserial-atmega16u2-MegaADK-Rev3.hex b/firmwares/atmegaxxu2/Arduino-COMBINED-dfu-usbserial-atmega16u2-MegaADK-Rev3.hex
new file mode 100644
index 0000000..b47bdf6
--- /dev/null
+++ b/firmwares/atmegaxxu2/Arduino-COMBINED-dfu-usbserial-atmega16u2-MegaADK-Rev3.hex
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diff --git a/firmwares/atmegaxxu2/Arduino-COMBINED-dfu-usbserial-atmega16u2-Uno-Rev3.hex b/firmwares/atmegaxxu2/Arduino-COMBINED-dfu-usbserial-atmega16u2-Uno-Rev3.hex
new file mode 100644
index 0000000..c2c7b2d
--- /dev/null
+++ b/firmwares/atmegaxxu2/Arduino-COMBINED-dfu-usbserial-atmega16u2-Uno-Rev3.hex
@@ -0,0 +1,467 @@
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diff --git a/firmwares/atmegaxxu2/MEGA-dfu_and_usbserial_combined.hex b/firmwares/atmegaxxu2/MEGA-dfu_and_usbserial_combined.hex
new file mode 100644
index 0000000..e22196c
--- /dev/null
+++ b/firmwares/atmegaxxu2/MEGA-dfu_and_usbserial_combined.hex
@@ -0,0 +1,234 @@
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diff --git a/firmwares/atmegaxxu2/README.txt b/firmwares/atmegaxxu2/README.txt
new file mode 100644
index 0000000..386dcf0
--- /dev/null
+++ b/firmwares/atmegaxxu2/README.txt
@@ -0,0 +1,33 @@
+Arduino Uno and Mega 2560 Firmwares for the ATmega8U2
+
+This directory contains the firmwares used on the ATmega8U2 on the Arduino
+Uno and Arduino Mega 2560.  The arduino-usbdfu directory contains the DFU
+bootloader on the 8U2; the arduino-usbserial directory contains the actual
+usb to serial firmware.  Both should be compiled against LUFA 100807.  The
+two .hex files in this directory combine the dfu and serial firmwares into
+a single file to burn onto the 8U2.  
+
+To burn (Uno):
+avrdude -p at90usb82 -F -P usb -c avrispmkii -U flash:w:UNO-dfu_and_usbserial_combined.hex -U lfuse:w:0xFF:m -U hfuse:w:0xD9:m -U efuse:w:0xF4:m -U lock:w:0x0F:m
+
+To burn (Mega 2560):
+avrdude -p at90usb82 -F -P usb -c avrispmkii -U flash:w:MEGA-dfu_and_usbserial_combined.hex -U lfuse:w:0xFF:m -U hfuse:w:0xD9:m -U efuse:w:0xF4:m -U lock:w:0x0F:m
+
+
+Note on USB Vendor IDs (VID) and Product IDs (PID): The arduino-usbdfu
+project uses Atmel's VID and MCU-specific PIDs to maintain compatibility
+with their FLIP software.  The source code to the arduino-usbserial
+project includes Atmel's VID and a PID donated by them to LUFA.  This
+PID is used in LUFA's USBtoSerial project, which forms the basis for
+arduino-usbserial.  According to the LUFA documentation, this VID/PID
+combination is:
+
+ "For use in testing of LUFA powered devices during development only,
+ by non-commercial entities. All devices must accept collisions on this
+ VID/PID range (from other in-development LUFA devices) to be resolved
+ by using a unique release number in the Device Descriptor. No devices
+ using this VID/PID combination may be released to the general public."
+
+The production version of the arduino-usbserial firmware uses the
+Arduino VID.  This is only for use with official Arduino hardware and
+should not be used on other products.
+\ No newline at end of file
diff --git a/firmwares/atmegaxxu2/UNO-dfu_and_usbserial_combined.hex b/firmwares/atmegaxxu2/UNO-dfu_and_usbserial_combined.hex
new file mode 100644
index 0000000..60acf44
--- /dev/null
+++ b/firmwares/atmegaxxu2/UNO-dfu_and_usbserial_combined.hex
@@ -0,0 +1,234 @@
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diff --git a/firmwares/atmegaxxu2/arduino-usbdfu/Arduino-usbdfu.c b/firmwares/atmegaxxu2/arduino-usbdfu/Arduino-usbdfu.c
new file mode 100755
index 0000000..7bed831
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbdfu/Arduino-usbdfu.c
@@ -0,0 +1,728 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Main source file for the DFU class bootloader. This file contains the complete bootloader logic.
+ */
+
+#define  INCLUDE_FROM_BOOTLOADER_C
+#include "Arduino-usbdfu.h"
+
+/** Flag to indicate if the bootloader should be running, or should exit and allow the application code to run
+ *  via a soft reset. When cleared, the bootloader will abort, the USB interface will shut down and the application
+ *  jumped to via an indirect jump to location 0x0000 (or other location specified by the host).
+ */
+bool RunBootloader = true;
+
+/** Flag to indicate if the bootloader is waiting to exit. When the host requests the bootloader to exit and
+ *  jump to the application address it specifies, it sends two sequential commands which must be properly
+ *  acknowledged. Upon reception of the first the RunBootloader flag is cleared and the WaitForExit flag is set,
+ *  causing the bootloader to wait for the final exit command before shutting down.
+ */
+bool WaitForExit = false;
+
+/** Current DFU state machine state, one of the values in the DFU_State_t enum. */
+uint8_t DFU_State = dfuIDLE;
+
+/** Status code of the last executed DFU command. This is set to one of the values in the DFU_Status_t enum after
+ *  each operation, and returned to the host when a Get Status DFU request is issued.
+ */
+uint8_t DFU_Status = OK;
+
+/** Data containing the DFU command sent from the host. */
+DFU_Command_t SentCommand;
+
+/** Response to the last issued Read Data DFU command. Unlike other DFU commands, the read command
+ *  requires a single byte response from the bootloader containing the read data when the next DFU_UPLOAD command
+ *  is issued by the host.
+ */
+uint8_t ResponseByte;
+
+/** Pointer to the start of the user application. By default this is 0x0000 (the reset vector), however the host
+ *  may specify an alternate address when issuing the application soft-start command.
+ */
+AppPtr_t AppStartPtr = (AppPtr_t)0x0000;
+
+/** 64-bit flash page number. This is concatenated with the current 16-bit address on USB AVRs containing more than
+ *  64KB of flash memory.
+ */
+uint8_t Flash64KBPage = 0;
+
+/** Memory start address, indicating the current address in the memory being addressed (either FLASH or EEPROM
+ *  depending on the issued command from the host).
+ */
+uint16_t StartAddr = 0x0000;
+
+/** Memory end address, indicating the end address to read to/write from in the memory being addressed (either FLASH
+ *  of EEPROM depending on the issued command from the host).
+ */
+uint16_t EndAddr = 0x0000;
+
+
+/** Pulse generation counters to keep track of the number of milliseconds remaining for each pulse type */
+volatile struct
+{
+	uint8_t TxLEDPulse; /**< Milliseconds remaining for data Tx LED pulse */
+	uint8_t RxLEDPulse; /**< Milliseconds remaining for data Rx LED pulse */
+	uint8_t PingPongLEDPulse; /**< Milliseconds remaining for enumeration Tx/Rx ping-pong LED pulse */
+} PulseMSRemaining;
+
+/** Main program entry point. This routine configures the hardware required by the bootloader, then continuously 
+ *  runs the bootloader processing routine until instructed to soft-exit, or hard-reset via the watchdog to start
+ *  the loaded application code.
+ */
+int main(void)
+{
+	/* Configure hardware required by the bootloader */
+	SetupHardware();
+	
+	/* Enable global interrupts so that the USB stack can function */
+	sei();
+
+	/* Run the USB management task while the bootloader is supposed to be running */
+	while (RunBootloader || WaitForExit)
+	  USB_USBTask();
+	
+	/* Reset configured hardware back to their original states for the user application */
+	ResetHardware();
+	
+	/* Start the user application */
+	AppStartPtr();
+}
+
+/** Configures all hardware required for the bootloader. */
+void SetupHardware(void)
+{
+	/* Disable watchdog if enabled by bootloader/fuses */
+	MCUSR &= ~(1 << WDRF);
+	wdt_disable();
+
+	/* Disable clock division */
+//	clock_prescale_set(clock_div_1);
+	
+	/* Relocate the interrupt vector table to the bootloader section */
+	MCUCR = (1 << IVCE);
+	MCUCR = (1 << IVSEL);
+
+	LEDs_Init();
+
+	/* Initialize the USB subsystem */
+	USB_Init();
+}
+
+/** Resets all configured hardware required for the bootloader back to their original states. */
+void ResetHardware(void)
+{
+	/* Shut down the USB subsystem */
+	USB_ShutDown();
+	
+	/* Relocate the interrupt vector table back to the application section */
+	MCUCR = (1 << IVCE);
+	MCUCR = 0;
+}
+
+/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific
+ *  control requests that are not handled internally by the USB library (including the DFU commands, which are
+ *  all issued via the control endpoint), so that they can be handled appropriately for the application.
+ */
+void EVENT_USB_Device_UnhandledControlRequest(void)
+{
+	/* Get the size of the command and data from the wLength value */
+	SentCommand.DataSize = USB_ControlRequest.wLength;
+
+	/* Turn off TX LED(s) once the TX pulse period has elapsed */
+	if (PulseMSRemaining.TxLEDPulse && !(--PulseMSRemaining.TxLEDPulse))
+		LEDs_TurnOffLEDs(LEDMASK_TX);
+		
+	/* Turn off RX LED(s) once the RX pulse period has elapsed */
+	if (PulseMSRemaining.RxLEDPulse && !(--PulseMSRemaining.RxLEDPulse))
+		LEDs_TurnOffLEDs(LEDMASK_RX);
+
+	switch (USB_ControlRequest.bRequest)
+	{
+		case DFU_DNLOAD:
+			LEDs_TurnOnLEDs(LEDMASK_RX);
+			PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS;		
+		
+			Endpoint_ClearSETUP();
+			
+			/* Check if bootloader is waiting to terminate */
+			if (WaitForExit)
+			{
+				/* Bootloader is terminating - process last received command */
+				ProcessBootloaderCommand();
+				
+				/* Turn off TX/RX status LEDs so that they're not left on when application starts */
+				LEDs_TurnOffLEDs(LEDMASK_TX);
+				LEDs_TurnOffLEDs(LEDMASK_RX);
+				
+				/* Indicate that the last command has now been processed - free to exit bootloader */
+				WaitForExit = false;
+			}
+			  
+			/* If the request has a data stage, load it into the command struct */
+			if (SentCommand.DataSize)
+			{
+				while (!(Endpoint_IsOUTReceived()))
+				{				
+					if (USB_DeviceState == DEVICE_STATE_Unattached)
+					  return;
+				}
+
+				/* First byte of the data stage is the DNLOAD request's command */
+				SentCommand.Command = Endpoint_Read_Byte();
+					
+				/* One byte of the data stage is the command, so subtract it from the total data bytes */
+				SentCommand.DataSize--;
+				
+				/* Load in the rest of the data stage as command parameters */
+				for (uint8_t DataByte = 0; (DataByte < sizeof(SentCommand.Data)) &&
+				     Endpoint_BytesInEndpoint(); DataByte++)
+				{
+					SentCommand.Data[DataByte] = Endpoint_Read_Byte();
+					SentCommand.DataSize--;
+				}
+				
+				/* Process the command */
+				ProcessBootloaderCommand();
+			}
+			
+			/* Check if currently downloading firmware */
+			if (DFU_State == dfuDNLOAD_IDLE)
+			{									
+				if (!(SentCommand.DataSize))
+				{
+					DFU_State = dfuIDLE;
+				}
+				else
+				{
+					/* Throw away the filler bytes before the start of the firmware */
+					DiscardFillerBytes(DFU_FILLER_BYTES_SIZE);
+
+					/* Throw away the packet alignment filler bytes before the start of the firmware */
+					DiscardFillerBytes(StartAddr % FIXED_CONTROL_ENDPOINT_SIZE);
+					
+					/* Calculate the number of bytes remaining to be written */
+					uint16_t BytesRemaining = ((EndAddr - StartAddr) + 1);
+					
+					if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x00))        // Write flash
+					{
+						/* Calculate the number of words to be written from the number of bytes to be written */
+						uint16_t WordsRemaining = (BytesRemaining >> 1);
+					
+						union
+						{
+							uint16_t Words[2];
+							uint32_t Long;
+						} CurrFlashAddress                 = {.Words = {StartAddr, Flash64KBPage}};
+						
+						uint32_t CurrFlashPageStartAddress = CurrFlashAddress.Long;
+						uint8_t  WordsInFlashPage          = 0;
+
+						while (WordsRemaining--)
+						{
+							/* Check if endpoint is empty - if so clear it and wait until ready for next packet */
+							if (!(Endpoint_BytesInEndpoint()))
+							{
+								Endpoint_ClearOUT();
+
+								while (!(Endpoint_IsOUTReceived()))
+								{				
+									if (USB_DeviceState == DEVICE_STATE_Unattached)
+									  return;
+								}
+							}
+
+							/* Write the next word into the current flash page */
+							boot_page_fill(CurrFlashAddress.Long, Endpoint_Read_Word_LE());
+
+							/* Adjust counters */
+							WordsInFlashPage      += 1;
+							CurrFlashAddress.Long += 2;
+
+							/* See if an entire page has been written to the flash page buffer */
+							if ((WordsInFlashPage == (SPM_PAGESIZE >> 1)) || !(WordsRemaining))
+							{
+								/* Commit the flash page to memory */
+								boot_page_write(CurrFlashPageStartAddress);
+								boot_spm_busy_wait();
+								
+								/* Check if programming incomplete */
+								if (WordsRemaining)
+								{
+									CurrFlashPageStartAddress = CurrFlashAddress.Long;
+									WordsInFlashPage          = 0;
+
+									/* Erase next page's temp buffer */
+									boot_page_erase(CurrFlashAddress.Long);
+									boot_spm_busy_wait();
+								}
+							}
+						}
+					
+						/* Once programming complete, start address equals the end address */
+						StartAddr = EndAddr;
+					
+						/* Re-enable the RWW section of flash */
+						boot_rww_enable();
+					}
+					else                                                   // Write EEPROM
+					{
+						while (BytesRemaining--)
+						{
+							/* Check if endpoint is empty - if so clear it and wait until ready for next packet */
+							if (!(Endpoint_BytesInEndpoint()))
+							{
+								Endpoint_ClearOUT();
+
+								while (!(Endpoint_IsOUTReceived()))
+								{				
+									if (USB_DeviceState == DEVICE_STATE_Unattached)
+									  return;
+								}
+							}
+
+							/* Read the byte from the USB interface and write to to the EEPROM */
+							eeprom_write_byte((uint8_t*)StartAddr, Endpoint_Read_Byte());
+							
+							/* Adjust counters */
+							StartAddr++;
+						}
+					}
+					
+					/* Throw away the currently unused DFU file suffix */
+					DiscardFillerBytes(DFU_FILE_SUFFIX_SIZE);
+				}
+			}
+
+			Endpoint_ClearOUT();
+
+			Endpoint_ClearStatusStage();
+
+			break;
+		case DFU_UPLOAD:
+			Endpoint_ClearSETUP();
+			
+			LEDs_TurnOnLEDs(LEDMASK_TX);
+			PulseMSRemaining.TxLEDPulse = TX_RX_LED_PULSE_MS;
+
+			while (!(Endpoint_IsINReady()))
+			{				
+				if (USB_DeviceState == DEVICE_STATE_Unattached)
+				  return;
+			}
+							
+			if (DFU_State != dfuUPLOAD_IDLE)
+			{
+				if ((DFU_State == dfuERROR) && IS_ONEBYTE_COMMAND(SentCommand.Data, 0x01))       // Blank Check
+				{
+					/* Blank checking is performed in the DFU_DNLOAD request - if we get here we've told the host
+					   that the memory isn't blank, and the host is requesting the first non-blank address */
+					Endpoint_Write_Word_LE(StartAddr);
+				}
+				else
+				{
+					/* Idle state upload - send response to last issued command */
+					Endpoint_Write_Byte(ResponseByte);
+				}
+			}
+			else
+			{
+				/* Determine the number of bytes remaining in the current block */
+				uint16_t BytesRemaining = ((EndAddr - StartAddr) + 1);
+
+				if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x00))            // Read FLASH
+				{
+					/* Calculate the number of words to be written from the number of bytes to be written */
+					uint16_t WordsRemaining = (BytesRemaining >> 1);
+
+					union
+					{
+						uint16_t Words[2];
+						uint32_t Long;
+					} CurrFlashAddress = {.Words = {StartAddr, Flash64KBPage}};
+
+					while (WordsRemaining--)
+					{
+						/* Check if endpoint is full - if so clear it and wait until ready for next packet */
+						if (Endpoint_BytesInEndpoint() == FIXED_CONTROL_ENDPOINT_SIZE)
+						{
+							Endpoint_ClearIN();
+
+							while (!(Endpoint_IsINReady()))
+							{				
+								if (USB_DeviceState == DEVICE_STATE_Unattached)
+								  return;
+							}
+						}
+
+						/* Read the flash word and send it via USB to the host */
+						#if (FLASHEND > 0xFFFF)
+							Endpoint_Write_Word_LE(pgm_read_word_far(CurrFlashAddress.Long));
+						#else
+							Endpoint_Write_Word_LE(pgm_read_word(CurrFlashAddress.Long));							
+						#endif
+
+						/* Adjust counters */
+						CurrFlashAddress.Long += 2;
+					}
+					
+					/* Once reading is complete, start address equals the end address */
+					StartAddr = EndAddr;
+				}
+				else if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x02))       // Read EEPROM
+				{
+					while (BytesRemaining--)
+					{
+						/* Check if endpoint is full - if so clear it and wait until ready for next packet */
+						if (Endpoint_BytesInEndpoint() == FIXED_CONTROL_ENDPOINT_SIZE)
+						{
+							Endpoint_ClearIN();
+							
+							while (!(Endpoint_IsINReady()))
+							{				
+								if (USB_DeviceState == DEVICE_STATE_Unattached)
+								  return;
+							}
+						}
+
+						/* Read the EEPROM byte and send it via USB to the host */
+						Endpoint_Write_Byte(eeprom_read_byte((uint8_t*)StartAddr));
+
+						/* Adjust counters */
+						StartAddr++;
+					}
+				}
+
+				/* Return to idle state */
+				DFU_State = dfuIDLE;
+			}
+
+			Endpoint_ClearIN();
+
+			Endpoint_ClearStatusStage();
+			break;
+		case DFU_GETSTATUS:
+			Endpoint_ClearSETUP();
+			
+			/* Write 8-bit status value */
+			Endpoint_Write_Byte(DFU_Status);
+			
+			/* Write 24-bit poll timeout value */
+			Endpoint_Write_Byte(0);
+			Endpoint_Write_Word_LE(0);
+			
+			/* Write 8-bit state value */
+			Endpoint_Write_Byte(DFU_State);
+
+			/* Write 8-bit state string ID number */
+			Endpoint_Write_Byte(0);
+
+			Endpoint_ClearIN();
+			
+			Endpoint_ClearStatusStage();
+			break;		
+		case DFU_CLRSTATUS:
+			Endpoint_ClearSETUP();
+			
+			/* Reset the status value variable to the default OK status */
+			DFU_Status = OK;
+
+			Endpoint_ClearStatusStage();
+			break;
+		case DFU_GETSTATE:
+			Endpoint_ClearSETUP();
+			
+			/* Write the current device state to the endpoint */
+			Endpoint_Write_Byte(DFU_State);
+		
+			Endpoint_ClearIN();
+			
+			Endpoint_ClearStatusStage();
+			break;
+		case DFU_ABORT:
+			Endpoint_ClearSETUP();
+			
+			/* Turn off TX/RX status LEDs so that they're not left on when application starts */
+			LEDs_TurnOffLEDs(LEDMASK_TX);
+			LEDs_TurnOffLEDs(LEDMASK_RX);
+			
+			/* Reset the current state variable to the default idle state */
+			DFU_State = dfuIDLE;
+
+			Endpoint_ClearStatusStage();
+			break;
+	}
+}
+
+/** Routine to discard the specified number of bytes from the control endpoint stream. This is used to
+ *  discard unused bytes in the stream from the host, including the memory program block suffix.
+ *
+ *  \param[in] NumberOfBytes  Number of bytes to discard from the host from the control endpoint
+ */
+static void DiscardFillerBytes(uint8_t NumberOfBytes)
+{
+	while (NumberOfBytes--)
+	{
+		if (!(Endpoint_BytesInEndpoint()))
+		{
+			Endpoint_ClearOUT();
+
+			/* Wait until next data packet received */
+			while (!(Endpoint_IsOUTReceived()))
+			{				
+				if (USB_DeviceState == DEVICE_STATE_Unattached)
+				  return;
+			}
+		}
+		else
+		{
+			Endpoint_Discard_Byte();
+		}
+	}
+}
+
+/** Routine to process an issued command from the host, via a DFU_DNLOAD request wrapper. This routine ensures
+ *  that the command is allowed based on the current secure mode flag value, and passes the command off to the
+ *  appropriate handler function.
+ */
+static void ProcessBootloaderCommand(void)
+{
+	/* Check if device is in secure mode */
+// 	if (IsSecure)
+// 	{
+// 		/* Don't process command unless it is a READ or chip erase command */
+// 		if (!(((SentCommand.Command == COMMAND_WRITE)             &&
+// 		        IS_TWOBYTE_COMMAND(SentCommand.Data, 0x00, 0xFF)) ||
+// 			   (SentCommand.Command == COMMAND_READ)))
+// 		{
+// 			/* Set the state and status variables to indicate the error */
+// 			DFU_State  = dfuERROR;
+// 			DFU_Status = errWRITE;
+// 			
+// 			/* Stall command */
+// 			Endpoint_StallTransaction();
+// 			
+// 			/* Don't process the command */
+// 			return;
+// 		}
+// 	}
+
+	/* Dispatch the required command processing routine based on the command type */
+	switch (SentCommand.Command)
+	{
+		case COMMAND_PROG_START:
+			ProcessMemProgCommand();
+			break;
+		case COMMAND_DISP_DATA:
+			ProcessMemReadCommand();
+			break;
+		case COMMAND_WRITE:
+			ProcessWriteCommand();
+			break;
+		case COMMAND_READ:
+			ProcessReadCommand();
+			break;
+		case COMMAND_CHANGE_BASE_ADDR:
+			if (IS_TWOBYTE_COMMAND(SentCommand.Data, 0x03, 0x00))              // Set 64KB flash page command
+			  Flash64KBPage = SentCommand.Data[2];
+			break;
+	}
+}
+
+/** Routine to concatenate the given pair of 16-bit memory start and end addresses from the host, and store them
+ *  in the StartAddr and EndAddr global variables.
+ */
+static void LoadStartEndAddresses(void)
+{
+	union
+	{
+		uint8_t  Bytes[2];
+		uint16_t Word;
+	} Address[2] = {{.Bytes = {SentCommand.Data[2], SentCommand.Data[1]}},
+	                {.Bytes = {SentCommand.Data[4], SentCommand.Data[3]}}};
+		
+	/* Load in the start and ending read addresses from the sent data packet */
+	StartAddr = Address[0].Word;
+	EndAddr   = Address[1].Word;
+}
+
+/** Handler for a Memory Program command issued by the host. This routine handles the preparations needed
+ *  to write subsequent data from the host into the specified memory.
+ */
+static void ProcessMemProgCommand(void)
+{
+	if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x00) ||                          // Write FLASH command
+	    IS_ONEBYTE_COMMAND(SentCommand.Data, 0x01))                            // Write EEPROM command
+	{
+		/* Load in the start and ending read addresses */
+		LoadStartEndAddresses();
+		
+		/* If FLASH is being written to, we need to pre-erase the first page to write to */
+		if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x00))
+		{
+			union
+			{
+				uint16_t Words[2];
+				uint32_t Long;
+			} CurrFlashAddress = {.Words = {StartAddr, Flash64KBPage}};
+			
+			/* Erase the current page's temp buffer */
+			boot_page_erase(CurrFlashAddress.Long);
+			boot_spm_busy_wait();
+		}
+		
+		/* Set the state so that the next DNLOAD requests reads in the firmware */
+		DFU_State = dfuDNLOAD_IDLE;
+	}
+}
+
+/** Handler for a Memory Read command issued by the host. This routine handles the preparations needed
+ *  to read subsequent data from the specified memory out to the host, as well as implementing the memory
+ *  blank check command.
+ */
+static void ProcessMemReadCommand(void)
+{
+	if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x00) ||                          // Read FLASH command
+        IS_ONEBYTE_COMMAND(SentCommand.Data, 0x02))                            // Read EEPROM command
+	{
+		/* Load in the start and ending read addresses */
+		LoadStartEndAddresses();
+
+		/* Set the state so that the next UPLOAD requests read out the firmware */
+		DFU_State = dfuUPLOAD_IDLE;
+	}
+	else if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x01))                       // Blank check FLASH command
+	{
+		uint32_t CurrFlashAddress = 0;
+
+		while (CurrFlashAddress < BOOT_START_ADDR)
+		{
+			/* Check if the current byte is not blank */
+			#if (FLASHEND > 0xFFFF)
+			if (pgm_read_byte_far(CurrFlashAddress) != 0xFF)
+			#else
+			if (pgm_read_byte(CurrFlashAddress) != 0xFF)
+			#endif
+			{
+				/* Save the location of the first non-blank byte for response back to the host */
+				Flash64KBPage = (CurrFlashAddress >> 16);
+				StartAddr     = CurrFlashAddress;
+			
+				/* Set state and status variables to the appropriate error values */
+				DFU_State  = dfuERROR;
+				DFU_Status = errCHECK_ERASED;
+
+				break;
+			}
+
+			CurrFlashAddress++;
+		}
+	}
+}
+
+/** Handler for a Data Write command issued by the host. This routine handles non-programming commands such as
+ *  bootloader exit (both via software jumps and hardware watchdog resets) and flash memory erasure.
+ */
+static void ProcessWriteCommand(void)
+{
+	if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x03))                            // Start application
+	{
+		/* Indicate that the bootloader is terminating */
+		WaitForExit = true;
+
+		/* Check if data supplied for the Start Program command - no data executes the program */
+		if (SentCommand.DataSize)
+		{
+			if (SentCommand.Data[1] == 0x01)                                   // Start via jump
+			{
+				union
+				{
+					uint8_t  Bytes[2];
+					AppPtr_t FuncPtr;
+				} Address = {.Bytes = {SentCommand.Data[4], SentCommand.Data[3]}};
+
+				/* Load in the jump address into the application start address pointer */
+				AppStartPtr = Address.FuncPtr;
+			}
+		}
+		else
+		{
+			if (SentCommand.Data[1] == 0x00)                                   // Start via watchdog
+			{
+				/* Start the watchdog to reset the AVR once the communications are finalized */
+				wdt_enable(WDTO_250MS);
+			}
+			else                                                               // Start via jump
+			{
+				/* Set the flag to terminate the bootloader at next opportunity */
+				RunBootloader = false;
+			}
+		}
+	}
+	else if (IS_TWOBYTE_COMMAND(SentCommand.Data, 0x00, 0xFF))                 // Erase flash
+	{
+		uint32_t CurrFlashAddress = 0;
+
+		/* Clear the application section of flash */
+		while (CurrFlashAddress < BOOT_START_ADDR)
+		{
+			boot_page_erase(CurrFlashAddress);
+			boot_spm_busy_wait();
+			boot_page_write(CurrFlashAddress);
+			boot_spm_busy_wait();
+
+			CurrFlashAddress += SPM_PAGESIZE;
+		}
+
+		/* Re-enable the RWW section of flash as writing to the flash locks it out */
+		boot_rww_enable();
+					
+		/* Memory has been erased, reset the security bit so that programming/reading is allowed */
+//		IsSecure = false;
+	}
+}
+
+/** Handler for a Data Read command issued by the host. This routine handles bootloader information retrieval
+ *  commands such as device signature and bootloader version retrieval.
+ */
+static void ProcessReadCommand(void)
+{
+	const uint8_t BootloaderInfo[3] = {BOOTLOADER_VERSION, BOOTLOADER_ID_BYTE1, BOOTLOADER_ID_BYTE2};
+	const uint8_t SignatureInfo[3]  = {AVR_SIGNATURE_1,    AVR_SIGNATURE_2,     AVR_SIGNATURE_3};
+
+	uint8_t DataIndexToRead = SentCommand.Data[1];
+
+	if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x00))                         // Read bootloader info
+	  ResponseByte = BootloaderInfo[DataIndexToRead];
+	else if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x01))                    // Read signature byte
+	  ResponseByte = SignatureInfo[DataIndexToRead - 0x30];
+}
diff --git a/firmwares/atmegaxxu2/arduino-usbdfu/Arduino-usbdfu.h b/firmwares/atmegaxxu2/arduino-usbdfu/Arduino-usbdfu.h
new file mode 100755
index 0000000..4fb236e
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbdfu/Arduino-usbdfu.h
@@ -0,0 +1,220 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Header file for Arduino-usbdfu.c.
+ */
+
+#ifndef _ARDUINO_USB_DFU_BOOTLOADER_H_
+#define _ARDUINO_USB_DFU_BOOTLOADER_H_
+
+	/* Includes: */
+		#include <avr/io.h>
+		#include <avr/wdt.h>
+		#include <avr/boot.h>
+		#include <avr/pgmspace.h>
+		#include <avr/eeprom.h>
+		#include <avr/power.h>
+		#include <avr/interrupt.h>
+		#include <stdbool.h>
+	
+		#include "Descriptors.h"
+		
+		#include <LUFA/Drivers/Board/LEDs.h>
+		#include <LUFA/Drivers/USB/USB.h>
+	
+	/* Macros: */
+		/** LED mask for the library LED driver, to indicate TX activity. */
+		#define LEDMASK_TX               LEDS_LED1
+
+		/** LED mask for the library LED driver, to indicate RX activity. */
+		#define LEDMASK_RX               LEDS_LED2
+		
+		/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
+		#define LEDMASK_ERROR            (LEDS_LED1 | LEDS_LED2)
+		
+		/** LED mask for the library LED driver, to indicate that the USB interface is busy. */
+		#define LEDMASK_BUSY             (LEDS_LED1 | LEDS_LED2)		
+	
+		/** Configuration define. Define this token to true to case the bootloader to reject all memory commands
+		 *  until a memory erase has been performed. When used in conjunction with the lockbits of the AVR, this
+		 *  can protect the AVR's firmware from being dumped from a secured AVR. When false, memory operations are
+		 *  allowed at any time.
+		 */
+//		#define SECURE_MODE              false
+
+		/** Major bootloader version number. */
+		#define BOOTLOADER_VERSION_MINOR 2
+
+		/** Minor bootloader version number. */
+		#define BOOTLOADER_VERSION_REV   0
+
+		/** Complete bootloader version number expressed as a packed byte, constructed from the 
+		 *  two individual bootloader version macros.
+		 */
+		#define BOOTLOADER_VERSION       ((BOOTLOADER_VERSION_MINOR << 4) | BOOTLOADER_VERSION_REV)
+
+		/** First byte of the bootloader identification bytes, used to identify a device's bootloader. */
+		#define BOOTLOADER_ID_BYTE1      0xDC
+
+		/** Second byte of the bootloader identification bytes, used to identify a device's bootloader. */
+		#define BOOTLOADER_ID_BYTE2      0xFB
+		
+		/** Convenience macro, used to determine if the issued command is the given one-byte long command.
+		 *
+		 *  \param[in] dataarr  Command byte array to check against
+		 *  \param[in] cb1      First command byte to check
+		 */
+		#define IS_ONEBYTE_COMMAND(dataarr, cb1)       (dataarr[0] == (cb1))
+
+		/** Convenience macro, used to determine if the issued command is the given two-byte long command.
+		 *
+		 *  \param[in] dataarr  Command byte array to check against
+		 *  \param[in] cb1      First command byte to check
+		 *  \param[in] cb2      Second command byte to check
+		 */
+		#define IS_TWOBYTE_COMMAND(dataarr, cb1, cb2) ((dataarr[0] == (cb1)) && (dataarr[1] == (cb2)))
+	
+		/** Length of the DFU file suffix block, appended to the end of each complete memory write command.
+		 *  The DFU file suffix is currently unused (but is designed to give extra file information, such as
+		 *  a CRC of the complete firmware for error checking) and so is discarded.
+		 */
+		#define DFU_FILE_SUFFIX_SIZE     16
+
+		/** Length of the DFU file filler block, appended to the start of each complete memory write command.
+		 *  Filler bytes are added to the start of each complete memory write command, and must be discarded.
+		 */
+		#define DFU_FILLER_BYTES_SIZE    26
+	
+		/** DFU class command request to detach from the host. */
+		#define DFU_DETATCH              0x00
+
+		/** DFU class command request to send data from the host to the bootloader. */
+		#define DFU_DNLOAD               0x01
+
+		/** DFU class command request to send data from the bootloader to the host. */
+		#define DFU_UPLOAD               0x02
+
+		/** DFU class command request to get the current DFU status and state from the bootloader. */
+		#define DFU_GETSTATUS            0x03
+
+		/** DFU class command request to reset the current DFU status and state variables to their defaults. */
+		#define DFU_CLRSTATUS            0x04
+
+		/** DFU class command request to get the current DFU state of the bootloader. */
+		#define DFU_GETSTATE             0x05
+
+		/** DFU class command request to abort the current multi-request transfer and return to the dfuIDLE state. */
+		#define DFU_ABORT                0x06
+
+		/** DFU command to begin programming the device's memory. */
+		#define COMMAND_PROG_START       0x01
+
+		/** DFU command to begin reading the device's memory. */
+		#define COMMAND_DISP_DATA        0x03
+
+		/** DFU command to issue a write command. */
+		#define COMMAND_WRITE            0x04
+
+		/** DFU command to issue a read command. */
+		#define COMMAND_READ             0x05
+
+		/** DFU command to issue a memory base address change command, to set the current 64KB flash page
+		 *  that subsequent flash operations should use. */
+		#define COMMAND_CHANGE_BASE_ADDR 0x06
+
+	/* Type Defines: */
+		/** Type define for a non-returning function pointer to the loaded application. */
+		typedef void (*AppPtr_t)(void) ATTR_NO_RETURN;
+		
+		/** Type define for a structure containing a complete DFU command issued by the host. */
+		typedef struct
+		{
+			uint8_t  Command; /**< Single byte command to perform, one of the COMMAND_* macro values */
+			uint8_t  Data[5]; /**< Command parameters */
+			uint16_t DataSize; /**< Size of the command parameters */
+		} DFU_Command_t;
+
+	/* Enums: */
+		/** DFU bootloader states. Refer to the DFU class specification for information on each state. */
+		enum DFU_State_t
+		{
+			appIDLE                      = 0,
+			appDETACH                    = 1,
+			dfuIDLE                      = 2,
+			dfuDNLOAD_SYNC               = 3,
+			dfuDNBUSY                    = 4,
+			dfuDNLOAD_IDLE               = 5,
+			dfuMANIFEST_SYNC             = 6,
+			dfuMANIFEST                  = 7,
+			dfuMANIFEST_WAIT_RESET       = 8,
+			dfuUPLOAD_IDLE               = 9,
+			dfuERROR	                 = 10
+		};
+
+		/** DFU command status error codes. Refer to the DFU class specification for information on each error code. */
+		enum DFU_Status_t
+		{
+			OK                           = 0,
+			errTARGET                    = 1,
+			errFILE                      = 2,
+			errWRITE                     = 3,
+			errERASE                     = 4,
+			errCHECK_ERASED              = 5,
+			errPROG                      = 6,
+			errVERIFY                    = 7,
+			errADDRESS                   = 8,
+			errNOTDONE                   = 9,
+			errFIRMWARE                  = 10,
+			errVENDOR                    = 11,
+			errUSBR                      = 12,
+			errPOR                       = 13,
+			errUNKNOWN                   = 14,
+			errSTALLEDPKT	             = 15
+		};
+				
+	/* Function Prototypes: */
+		void SetupHardware(void);
+		void ResetHardware(void);
+
+		void EVENT_USB_Device_UnhandledControlRequest(void);
+
+		#if defined(INCLUDE_FROM_BOOTLOADER_C)
+			static void DiscardFillerBytes(uint8_t NumberOfBytes);
+			static void ProcessBootloaderCommand(void);
+			static void LoadStartEndAddresses(void);
+			static void ProcessMemProgCommand(void);
+			static void ProcessMemReadCommand(void);
+			static void ProcessWriteCommand(void);
+			static void ProcessReadCommand(void);
+		#endif
+		
+#endif /* _ARDUINO_USB_DFU_BOOTLOADER_H_ */
diff --git a/firmwares/atmegaxxu2/arduino-usbdfu/Board/LEDs.h b/firmwares/atmegaxxu2/arduino-usbdfu/Board/LEDs.h
new file mode 100755
index 0000000..152e8f5
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbdfu/Board/LEDs.h
@@ -0,0 +1,110 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/*
+   Board LEDs driver for the Benito board, from www.dorkbotpdx.org.
+*/
+
+#ifndef __LEDS_ARDUINOUNO_H__
+#define __LEDS_ARDUINOUNO_H__
+
+	/* Includes: */
+		#include <avr/io.h>
+
+/* Enable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			extern "C" {
+		#endif
+
+	/* Preprocessor Checks: */
+		#if !defined(INCLUDE_FROM_LEDS_H)
+			#error Do not include this file directly. Include LUFA/Drivers/Board/LEDS.h instead.
+		#endif
+
+	/* Public Interface - May be used in end-application: */
+		/* Macros: */
+			/** LED mask for the first LED on the board. */
+			#define LEDS_LED1        (1 << 5)
+
+			/** LED mask for the second LED on the board. */
+			#define LEDS_LED2        (1 << 4)
+
+			/** LED mask for all the LEDs on the board. */
+			#define LEDS_ALL_LEDS    (LEDS_LED1 | LEDS_LED2)
+
+			/** LED mask for the none of the board LEDs */
+			#define LEDS_NO_LEDS     0
+
+		/* Inline Functions: */
+		#if !defined(__DOXYGEN__)
+			static inline void LEDs_Init(void)
+			{
+				DDRD  |= LEDS_ALL_LEDS;
+				PORTD |= LEDS_ALL_LEDS;
+			}
+			
+			static inline void LEDs_TurnOnLEDs(const uint8_t LEDMask)
+			{
+				PORTD &= ~LEDMask;
+			}
+
+			static inline void LEDs_TurnOffLEDs(const uint8_t LEDMask)
+			{
+				PORTD |= LEDMask;
+			}
+
+			static inline void LEDs_SetAllLEDs(const uint8_t LEDMask)
+			{
+				PORTD = ((PORTD | LEDS_ALL_LEDS) & ~LEDMask);
+			}
+			
+			static inline void LEDs_ChangeLEDs(const uint8_t LEDMask, const uint8_t ActiveMask)
+			{
+				PORTD = ((PORTD | ActiveMask) & ~LEDMask);
+			}
+
+			static inline void LEDs_ToggleLEDs(const uint8_t LEDMask)
+			{
+				PORTD ^= LEDMask;
+			}
+			
+			static inline uint8_t LEDs_GetLEDs(void) ATTR_WARN_UNUSED_RESULT;
+			static inline uint8_t LEDs_GetLEDs(void)
+			{
+				return (PORTD & LEDS_ALL_LEDS);
+			}
+		#endif
+
+	/* Disable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			}
+		#endif
+		
+#endif
diff --git a/firmwares/atmegaxxu2/arduino-usbdfu/Descriptors.c b/firmwares/atmegaxxu2/arduino-usbdfu/Descriptors.c
new file mode 100755
index 0000000..4deaa06
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbdfu/Descriptors.c
@@ -0,0 +1,189 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  USB Device Descriptors, for library use when in USB device mode. Descriptors are special 
+ *  computer-readable structures which the host requests upon device enumeration, to determine
+ *  the device's capabilities and functions.  
+ */
+
+#include "Descriptors.h"
+
+/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
+ *  device characteristics, including the supported USB version, control endpoint size and the
+ *  number of device configurations. The descriptor is read out by the USB host when the enumeration
+ *  process begins.
+ */
+USB_Descriptor_Device_t DeviceDescriptor =
+{
+	.Header                 = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
+		
+	.USBSpecification       = VERSION_BCD(01.10),
+	.Class                  = 0x00,
+	.SubClass               = 0x00,
+	.Protocol               = 0x00,
+				
+	.Endpoint0Size          = FIXED_CONTROL_ENDPOINT_SIZE,
+		
+	.VendorID               = 0x03EB, // Atmel
+	.ProductID              = PRODUCT_ID_CODE, // MCU-dependent
+	.ReleaseNumber          = 0x0000,
+		
+	.ManufacturerStrIndex   = NO_DESCRIPTOR,
+	.ProductStrIndex        = 0x01,
+	.SerialNumStrIndex      = NO_DESCRIPTOR,
+		
+	.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
+};
+
+/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
+ *  of the device in one of its supported configurations, including information about any device interfaces
+ *  and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
+ *  a configuration so that the host may correctly communicate with the USB device.
+ */
+USB_Descriptor_Configuration_t ConfigurationDescriptor =
+{
+	.Config = 
+		{
+			.Header                   = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},
+
+			.TotalConfigurationSize   = sizeof(USB_Descriptor_Configuration_t),
+			.TotalInterfaces          = 1,
+
+			.ConfigurationNumber      = 1,
+			.ConfigurationStrIndex    = NO_DESCRIPTOR,
+				
+			.ConfigAttributes         = USB_CONFIG_ATTR_BUSPOWERED,
+			
+			.MaxPowerConsumption      = USB_CONFIG_POWER_MA(100)
+		},
+		
+	.DFU_Interface = 
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
+
+			.InterfaceNumber        = 0,
+			.AlternateSetting       = 0,
+			
+			.TotalEndpoints         = 0,
+				
+			.Class                  = 0xFE,
+			.SubClass               = 0x01,
+			.Protocol               = 0x02,
+
+			.InterfaceStrIndex      = NO_DESCRIPTOR
+		},
+		
+	.DFU_Functional = 
+		{
+			.Header                 = {.Size = sizeof(USB_DFU_Functional_Descriptor_t), .Type = DTYPE_DFUFunctional},
+			
+			.Attributes             = (ATTR_CAN_UPLOAD | ATTR_CAN_DOWNLOAD),
+
+			.DetachTimeout          = 0x0000,
+			.TransferSize           = 0x0c00,
+		
+			.DFUSpecification       = VERSION_BCD(01.01)
+		}
+};
+
+/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
+ *  the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
+ *  via the language ID table available at USB.org what languages the device supports for its string descriptors.
+ */ 
+USB_Descriptor_String_t LanguageString =
+{
+	.Header                 = {.Size = USB_STRING_LEN(1), .Type = DTYPE_String},
+		
+	.UnicodeString          = {LANGUAGE_ID_ENG}
+};
+
+/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
+ *  and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
+ *  Descriptor.
+ */
+USB_Descriptor_String_t ProductString =
+{
+	#if (ARDUINO_MODEL_PID == ARDUINO_UNO_PID)
+		.Header                 = {.Size = USB_STRING_LEN(15), .Type = DTYPE_String},
+			
+		.UnicodeString          = L"Arduino Uno DFU"
+	#elif (ARDUINO_MODEL_PID == ARDUINO_MEGA2560_PID)
+		.Header                 = {.Size = USB_STRING_LEN(21), .Type = DTYPE_String},
+			
+		.UnicodeString          = L"Arduino Mega 2560 DFU"
+	#endif
+};
+
+/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
+ *  documentation) by the application code so that the address and size of a requested descriptor can be given
+ *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
+ *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
+ *  USB host.
+ */
+uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
+                                    const uint8_t wIndex,
+                                    void** const DescriptorAddress)
+{
+	const uint8_t  DescriptorType   = (wValue >> 8);
+	const uint8_t  DescriptorNumber = (wValue & 0xFF);
+
+	void*    Address = NULL;
+	uint16_t Size    = NO_DESCRIPTOR;
+
+	switch (DescriptorType)
+	{
+		case DTYPE_Device:
+			Address = &DeviceDescriptor;
+			Size    = sizeof(USB_Descriptor_Device_t);
+			break;
+		case DTYPE_Configuration: 
+			Address = &ConfigurationDescriptor;
+			Size    = sizeof(USB_Descriptor_Configuration_t);
+			break;
+		case DTYPE_String: 
+			if (!(DescriptorNumber))
+			{
+				Address = &LanguageString;
+				Size    = LanguageString.Header.Size;
+			}
+			else
+			{
+				Address = &ProductString;
+				Size    = ProductString.Header.Size;
+			}
+			
+			break;
+	}
+	
+	*DescriptorAddress = Address;
+	return Size;
+}
diff --git a/firmwares/atmegaxxu2/arduino-usbdfu/Descriptors.h b/firmwares/atmegaxxu2/arduino-usbdfu/Descriptors.h
new file mode 100755
index 0000000..6c93f20
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbdfu/Descriptors.h
@@ -0,0 +1,177 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Header file for Descriptors.c.
+ */
+
+#ifndef _DESCRIPTORS_H_
+#define _DESCRIPTORS_H_
+
+	/* Includes: */
+		#include <LUFA/Drivers/USB/USB.h>
+		
+	/* Product-specific definitions: */
+		#define ARDUINO_UNO_PID				0x0001
+		#define ARDUINO_MEGA2560_PID		0x0010		
+
+	/* Macros: */
+		/** Descriptor type value for a DFU class functional descriptor. */
+		#define DTYPE_DFUFunctional               0x21
+		
+		/** DFU attribute mask, indicating that the DFU device will detach and re-attach when a DFU_DETACH
+		 *  command is issued, rather than the host issuing a USB Reset.
+		 */
+		#define ATTR_WILL_DETATCH                 (1 << 3)
+
+		/** DFU attribute mask, indicating that the DFU device can communicate during the manifestation phase
+		 *  (memory programming phase).
+		 */
+		#define ATTR_MANEFESTATION_TOLLERANT      (1 << 2)
+		
+		/** DFU attribute mask, indicating that the DFU device can accept DFU_UPLOAD requests to send data from
+		 *  the device to the host.
+		 */		
+		#define ATTR_CAN_UPLOAD                   (1 << 1)
+
+		/** DFU attribute mask, indicating that the DFU device can accept DFU_DNLOAD requests to send data from
+		 *  the host to the device.
+		 */		
+		#define ATTR_CAN_DOWNLOAD                 (1 << 0)
+
+		#if defined(__AVR_AT90USB1287__)
+			#define PRODUCT_ID_CODE               0x2FFB
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x97
+			#define AVR_SIGNATURE_3               0x82
+		#elif defined(__AVR_AT90USB1286__)
+			#define PRODUCT_ID_CODE               0x2FFB
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x97
+			#define AVR_SIGNATURE_3               0x82
+		#elif defined(__AVR_AT90USB647__)
+			#define PRODUCT_ID_CODE               0x2FF9
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x96
+			#define AVR_SIGNATURE_3               0x82
+		#elif defined(__AVR_AT90USB646__)
+			#define PRODUCT_ID_CODE               0x2FF9
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x96
+			#define AVR_SIGNATURE_3               0x82
+		#elif defined(__AVR_ATmega32U6__)
+			#define PRODUCT_ID_CODE               0x2FFB
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x95
+			#define AVR_SIGNATURE_3               0x88
+		#elif defined(__AVR_ATmega32U4__)
+			#define PRODUCT_ID_CODE               0x2FF4
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x95
+			#define AVR_SIGNATURE_3               0x87
+		#elif defined(__AVR_ATmega32U2__)
+			#define PRODUCT_ID_CODE               0x2FF0
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x95
+			#define AVR_SIGNATURE_3               0x8A
+		#elif defined(__AVR_ATmega16U4__)
+			#define PRODUCT_ID_CODE               0x2FF3
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x94
+			#define AVR_SIGNATURE_3               0x88
+		#elif defined(__AVR_ATmega16U2__)
+			#define PRODUCT_ID_CODE               0x2FEF
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x94
+			#define AVR_SIGNATURE_3               0x89
+		#elif defined(__AVR_AT90USB162__)
+			#define PRODUCT_ID_CODE               0x2FFA
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x94
+			#define AVR_SIGNATURE_3               0x82
+		#elif defined(__AVR_AT90USB82__)
+			#define PRODUCT_ID_CODE               0x2FEE
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x93
+			#define AVR_SIGNATURE_3               0x89
+		#elif defined(__AVR_ATmega8U2__)
+			#define PRODUCT_ID_CODE               0x2FF7
+			#define AVR_SIGNATURE_1               0x1E
+			#define AVR_SIGNATURE_2               0x93
+			#define AVR_SIGNATURE_3               0x82
+		#else
+			#error The selected AVR part is not currently supported by this bootloader.
+		#endif
+		
+		#if !defined(PRODUCT_ID_CODE)
+			#error Current AVR model is not supported by this bootloader.
+		#endif
+	
+	/* Type Defines: */
+		/** Type define for a DFU class function descriptor. This descriptor gives DFU class information
+		 *  to the host when read, indicating the DFU device's capabilities.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t               Header; /**< Standard descriptor header structure */
+			
+			uint8_t                               Attributes; /**< DFU device attributes, a mask comprising of the
+			                                                    *  ATTR_* macros listed in this source file
+			                                                    */
+			uint16_t                              DetachTimeout; /**< Timeout in milliseconds between a USB_DETACH
+			                                                        *  command being issued and the device detaching
+			                                                        *  from the USB bus
+			                                                        */																	
+			uint16_t                              TransferSize; /**< Maximum number of bytes the DFU device can accept
+			                                                      *  from the host in a transaction
+			                                                      */			
+			uint16_t                              DFUSpecification;	/**< BCD packed DFU specification number this DFU
+			                                                          *  device complies with
+			                                                          */
+		} USB_DFU_Functional_Descriptor_t;
+	
+		/** Type define for the device configuration descriptor structure. This must be defined in the
+		 *  application code, as the configuration descriptor contains several sub-descriptors which
+		 *  vary between devices, and which describe the device's usage to the host.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Configuration_Header_t Config;
+			USB_Descriptor_Interface_t            DFU_Interface;
+			USB_DFU_Functional_Descriptor_t       DFU_Functional;
+		} USB_Descriptor_Configuration_t;
+		
+	/* Function Prototypes: */
+		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
+		                                    const uint8_t wIndex,
+		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+
+#endif
diff --git a/firmwares/atmegaxxu2/arduino-usbdfu/makefile b/firmwares/atmegaxxu2/arduino-usbdfu/makefile
new file mode 100755
index 0000000..1fb4ed3
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbdfu/makefile
@@ -0,0 +1,710 @@
+# Hey Emacs, this is a -*- makefile -*-
+#----------------------------------------------------------------------------
+# WinAVR Makefile Template written by Eric B. Weddington, J�rg Wunsch, et al.
+#  >> Modified for use with the LUFA project. <<
+#
+# Released to the Public Domain
+#
+# Additional material for this makefile was written by:
+# Peter Fleury
+# Tim Henigan
+# Colin O'Flynn
+# Reiner Patommel
+# Markus Pfaff
+# Sander Pool
+# Frederik Rouleau
+# Carlos Lamas
+# Dean Camera
+# Opendous Inc.
+# Denver Gingerich
+#
+#----------------------------------------------------------------------------
+# On command line:
+#
+# make all = Make software.
+#
+# make clean = Clean out built project files.
+#
+# make coff = Convert ELF to AVR COFF.
+#
+# make extcoff = Convert ELF to AVR Extended COFF.
+#
+# make program = Download the hex file to the device, using avrdude.
+#                Please customize the avrdude settings below first!
+#
+# make doxygen = Generate DoxyGen documentation for the project (must have
+#                DoxyGen installed)
+#
+# make debug = Start either simulavr or avarice as specified for debugging, 
+#              with avr-gdb or avr-insight as the front end for debugging.
+#
+# make filename.s = Just compile filename.c into the assembler code only.
+#
+# make filename.i = Create a preprocessed source file for use in submitting
+#                   bug reports to the GCC project.
+#
+# To rebuild project do "make clean" then "make all".
+#----------------------------------------------------------------------------
+
+
+# MCU name
+MCU = atmega8u2
+MCU_AVRDUDE = at90usb82
+
+# Specify the Arduino model using the assigned PID.  This is used by Descriptors.c
+#   to set the product descriptor string (for DFU we must use the PID for each
+#   chip that dfu-bootloader or Flip expect)
+# Uno PID:
+ARDUINO_MODEL_PID = 0x0001
+# Mega 2560 PID:
+#ARDUINO_MODEL_PID = 0x0010
+
+# Target board (see library "Board Types" documentation, NONE for projects not requiring
+# LUFA board drivers). If USER is selected, put custom board drivers in a directory called 
+# "Board" inside the application directory.
+BOARD  = USER
+
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the 
+#     processor frequency in Hz. You can then use this symbol in your source code to 
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_CLOCK below, as it is sourced by
+#     F_CLOCK after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
+
+# Input clock frequency.
+#     This will define a symbol, F_CLOCK, in all source code files equal to the 
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_CLOCK = $(F_CPU)
+
+
+# Starting byte address of the bootloader, as a byte address - computed via the formula
+#   BOOT_START = ((TOTAL_FLASH_BYTES - BOOTLOADER_SECTION_SIZE_BYTES) * 1024)
+#
+# Note that the bootloader size and start address given in AVRStudio is in words and not
+# bytes, and so will need to be doubled to obtain the byte address needed by AVR-GCC.
+BOOT_START =  0x1000
+
+
+# Output format. (can be srec, ihex, binary)
+FORMAT = ihex
+
+
+# Target file name (without extension).
+TARGET = Arduino-usbdfu
+
+
+# Object files directory
+#     To put object files in current directory, use a dot (.), do NOT make
+#     this an empty or blank macro!
+OBJDIR = .
+
+
+# Path to the LUFA library
+LUFA_PATH = ../..
+
+
+# LUFA library compile-time options and predefined tokens
+LUFA_OPTS  = -D USB_DEVICE_ONLY
+LUFA_OPTS += -D DEVICE_STATE_AS_GPIOR=0
+LUFA_OPTS += -D CONTROL_ONLY_DEVICE
+LUFA_OPTS += -D FIXED_CONTROL_ENDPOINT_SIZE=32
+LUFA_OPTS += -D FIXED_NUM_CONFIGURATIONS=1
+LUFA_OPTS += -D USE_RAM_DESCRIPTORS
+LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
+LUFA_OPTS += -D NO_INTERNAL_SERIAL
+LUFA_OPTS += -D NO_DEVICE_SELF_POWER
+LUFA_OPTS += -D NO_DEVICE_REMOTE_WAKEUP
+LUFA_OPTS += -D NO_STREAM_CALLBACKS
+
+
+# Create the LUFA source path variables by including the LUFA root makefile
+include $(LUFA_PATH)/LUFA/makefile
+
+
+# List C source files here. (C dependencies are automatically generated.)
+SRC = $(TARGET).c                                                 \
+	  Descriptors.c                                               \
+	  $(LUFA_SRC_USB)                                             \
+
+
+# List C++ source files here. (C dependencies are automatically generated.)
+CPPSRC = 
+
+
+# List Assembler source files here.
+#     Make them always end in a capital .S.  Files ending in a lowercase .s
+#     will not be considered source files but generated files (assembler
+#     output from the compiler), and will be deleted upon "make clean"!
+#     Even though the DOS/Win* filesystem matches both .s and .S the same,
+#     it will preserve the spelling of the filenames, and gcc itself does
+#     care about how the name is spelled on its command-line.
+ASRC =
+
+
+# Optimization level, can be [0, 1, 2, 3, s]. 
+#     0 = turn off optimization. s = optimize for size.
+#     (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
+OPT = s
+
+
+# Debugging format.
+#     Native formats for AVR-GCC's -g are dwarf-2 [default] or stabs.
+#     AVR Studio 4.10 requires dwarf-2.
+#     AVR [Extended] COFF format requires stabs, plus an avr-objcopy run.
+DEBUG = dwarf-2
+
+
+# List any extra directories to look for include files here.
+#     Each directory must be seperated by a space.
+#     Use forward slashes for directory separators.
+#     For a directory that has spaces, enclose it in quotes.
+EXTRAINCDIRS = $(LUFA_PATH)/
+
+
+# Compiler flag to set the C Standard level.
+#     c89   = "ANSI" C
+#     gnu89 = c89 plus GCC extensions
+#     c99   = ISO C99 standard (not yet fully implemented)
+#     gnu99 = c99 plus GCC extensions
+CSTANDARD = -std=c99
+
+
+# Place -D or -U options here for C sources
+CDEFS  = -DF_CPU=$(F_CPU)UL
+CDEFS += -DARDUINO_MODEL_PID=$(ARDUINO_MODEL_PID)
+CDEFS += -DF_CLOCK=$(F_CLOCK)UL
+CDEFS += -DBOARD=BOARD_$(BOARD)
+CDEFS += -DBOOT_START_ADDR=$(BOOT_START)UL
+CDEFS += -DTX_RX_LED_PULSE_MS=3
+CDEFS += $(LUFA_OPTS)
+
+
+# Place -D or -U options here for ASM sources
+ADEFS  = -DF_CPU=$(F_CPU)
+ADEFS += -DF_CLOCK=$(F_CLOCK)UL
+ADEFS += -DBOARD=BOARD_$(BOARD)
+CDEFS += -DBOOT_START_ADDR=$(BOOT_START)UL
+ADEFS += $(LUFA_OPTS)
+
+# Place -D or -U options here for C++ sources
+CPPDEFS  = -DF_CPU=$(F_CPU)UL
+CPPDEFS += -DF_CLOCK=$(F_CLOCK)UL
+CPPDEFS += -DBOARD=BOARD_$(BOARD)
+CDEFS += -DBOOT_START_ADDR=$(BOOT_START)UL
+CPPDEFS += $(LUFA_OPTS)
+#CPPDEFS += -D__STDC_LIMIT_MACROS
+#CPPDEFS += -D__STDC_CONSTANT_MACROS
+
+
+
+#---------------- Compiler Options C ----------------
+#  -g*:          generate debugging information
+#  -O*:          optimization level
+#  -f...:        tuning, see GCC manual and avr-libc documentation
+#  -Wall...:     warning level
+#  -Wa,...:      tell GCC to pass this to the assembler.
+#    -adhlns...: create assembler listing
+CFLAGS = -g$(DEBUG)
+CFLAGS += $(CDEFS)
+CFLAGS += -O$(OPT)
+CFLAGS += -funsigned-char
+CFLAGS += -funsigned-bitfields
+CFLAGS += -ffunction-sections
+CFLAGS += -fno-inline-small-functions
+CFLAGS += -fpack-struct
+CFLAGS += -fshort-enums
+CFLAGS += -fno-strict-aliasing
+CFLAGS += -Wall
+CFLAGS += -Wstrict-prototypes
+#CFLAGS += -mshort-calls
+#CFLAGS += -fno-unit-at-a-time
+#CFLAGS += -Wundef
+#CFLAGS += -Wunreachable-code
+#CFLAGS += -Wsign-compare
+CFLAGS += -Wa,-adhlns=$(<:%.c=$(OBJDIR)/%.lst)
+CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
+CFLAGS += $(CSTANDARD)
+
+
+#---------------- Compiler Options C++ ----------------
+#  -g*:          generate debugging information
+#  -O*:          optimization level
+#  -f...:        tuning, see GCC manual and avr-libc documentation
+#  -Wall...:     warning level
+#  -Wa,...:      tell GCC to pass this to the assembler.
+#    -adhlns...: create assembler listing
+CPPFLAGS = -g$(DEBUG)
+CPPFLAGS += $(CPPDEFS)
+CPPFLAGS += -O$(OPT)
+CPPFLAGS += -funsigned-char
+CPPFLAGS += -funsigned-bitfields
+CPPFLAGS += -fpack-struct
+CPPFLAGS += -fshort-enums
+CPPFLAGS += -fno-exceptions
+CPPFLAGS += -Wall
+CPPFLAGS += -Wundef
+#CPPFLAGS += -mshort-calls
+#CPPFLAGS += -fno-unit-at-a-time
+#CPPFLAGS += -Wstrict-prototypes
+#CPPFLAGS += -Wunreachable-code
+#CPPFLAGS += -Wsign-compare
+CPPFLAGS += -Wa,-adhlns=$(<:%.cpp=$(OBJDIR)/%.lst)
+CPPFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
+#CPPFLAGS += $(CSTANDARD)
+
+
+#---------------- Assembler Options ----------------
+#  -Wa,...:   tell GCC to pass this to the assembler.
+#  -adhlns:   create listing
+#  -gstabs:   have the assembler create line number information; note that
+#             for use in COFF files, additional information about filenames
+#             and function names needs to be present in the assembler source
+#             files -- see avr-libc docs [FIXME: not yet described there]
+#  -listing-cont-lines: Sets the maximum number of continuation lines of hex 
+#       dump that will be displayed for a given single line of source input.
+ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:%.S=$(OBJDIR)/%.lst),-gstabs,--listing-cont-lines=100
+
+
+#---------------- Library Options ----------------
+# Minimalistic printf version
+PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
+
+# Floating point printf version (requires MATH_LIB = -lm below)
+PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
+
+# If this is left blank, then it will use the Standard printf version.
+PRINTF_LIB = 
+#PRINTF_LIB = $(PRINTF_LIB_MIN)
+#PRINTF_LIB = $(PRINTF_LIB_FLOAT)
+
+
+# Minimalistic scanf version
+SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
+
+# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
+SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
+
+# If this is left blank, then it will use the Standard scanf version.
+SCANF_LIB = 
+#SCANF_LIB = $(SCANF_LIB_MIN)
+#SCANF_LIB = $(SCANF_LIB_FLOAT)
+
+
+MATH_LIB = -lm
+
+
+# List any extra directories to look for libraries here.
+#     Each directory must be seperated by a space.
+#     Use forward slashes for directory separators.
+#     For a directory that has spaces, enclose it in quotes.
+EXTRALIBDIRS = 
+
+
+
+#---------------- External Memory Options ----------------
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# used for variables (.data/.bss) and heap (malloc()).
+#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# only used for heap (malloc()).
+#EXTMEMOPTS = -Wl,--section-start,.data=0x801100,--defsym=__heap_end=0x80ffff
+
+EXTMEMOPTS =
+
+
+
+#---------------- Linker Options ----------------
+#  -Wl,...:     tell GCC to pass this to linker.
+#    -Map:      create map file
+#    --cref:    add cross reference to  map file
+LDFLAGS  = -Wl,-Map=$(TARGET).map,--cref
+LDFLAGS += -Wl,--section-start=.text=$(BOOT_START)
+LDFLAGS += -Wl,--relax 
+LDFLAGS += -Wl,--gc-sections
+LDFLAGS += $(EXTMEMOPTS)
+LDFLAGS += $(patsubst %,-L%,$(EXTRALIBDIRS))
+LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
+#LDFLAGS += -T linker_script.x
+
+
+
+#---------------- Programming Options (avrdude) ----------------
+
+# Fuse settings for Arduino Uno DFU bootloader project
+AVRDUDE_FUSES = -U efuse:w:0xF4:m -U hfuse:w:0xD9:m -U lfuse:w:0xFF:m 
+
+# Lock settings for Arduino Uno DFU bootloader project
+AVRDUDE_LOCK = -U lock:w:0x0F:m
+
+# Programming hardware
+# Type: avrdude -c ?
+# to get a full listing.
+#
+AVRDUDE_PROGRAMMER = avrispmkii
+
+# com1 = serial port. Use lpt1 to connect to parallel port.
+AVRDUDE_PORT = usb
+
+AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
+#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
+
+# Uncomment the following if you want avrdude's erase cycle counter.
+# Note that this counter needs to be initialized first using -Yn,
+# see avrdude manual.
+#AVRDUDE_ERASE_COUNTER = -y
+
+# Uncomment the following if you do /not/ wish a verification to be
+# performed after programming the device.
+#AVRDUDE_NO_VERIFY = -V
+
+# Increase verbosity level.  Please use this when submitting bug
+# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude> 
+# to submit bug reports.
+#AVRDUDE_VERBOSE = -v -v
+
+AVRDUDE_FLAGS = -p $(MCU_AVRDUDE) -F -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
+AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)
+AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)
+AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
+
+
+
+#---------------- Debugging Options ----------------
+
+# For simulavr only - target MCU frequency.
+DEBUG_MFREQ = $(F_CPU)
+
+# Set the DEBUG_UI to either gdb or insight.
+# DEBUG_UI = gdb
+DEBUG_UI = insight
+
+# Set the debugging back-end to either avarice, simulavr.
+DEBUG_BACKEND = avarice
+#DEBUG_BACKEND = simulavr
+
+# GDB Init Filename.
+GDBINIT_FILE = __avr_gdbinit
+
+# When using avarice settings for the JTAG
+JTAG_DEV = /dev/com1
+
+# Debugging port used to communicate between GDB / avarice / simulavr.
+DEBUG_PORT = 4242
+
+# Debugging host used to communicate between GDB / avarice / simulavr, normally
+#     just set to localhost unless doing some sort of crazy debugging when 
+#     avarice is running on a different computer.
+DEBUG_HOST = localhost
+
+
+
+#============================================================================
+
+
+# Define programs and commands.
+SHELL = sh
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+SIZE = avr-size
+AR = avr-ar rcs
+NM = avr-nm
+AVRDUDE = avrdude
+REMOVE = rm -f
+REMOVEDIR = rm -rf
+COPY = cp
+WINSHELL = cmd
+
+
+# Define Messages
+# English
+MSG_ERRORS_NONE = Errors: none
+MSG_BEGIN = -------- begin --------
+MSG_END = --------  end  --------
+MSG_SIZE_BEFORE = Size before: 
+MSG_SIZE_AFTER = Size after:
+MSG_COFF = Converting to AVR COFF:
+MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
+MSG_FLASH = Creating load file for Flash:
+MSG_EEPROM = Creating load file for EEPROM:
+MSG_EXTENDED_LISTING = Creating Extended Listing:
+MSG_SYMBOL_TABLE = Creating Symbol Table:
+MSG_LINKING = Linking:
+MSG_COMPILING = Compiling C:
+MSG_COMPILING_CPP = Compiling C++:
+MSG_ASSEMBLING = Assembling:
+MSG_CLEANING = Cleaning project:
+MSG_CREATING_LIBRARY = Creating library:
+
+
+
+
+# Define all object files.
+OBJ = $(SRC:%.c=$(OBJDIR)/%.o) $(CPPSRC:%.cpp=$(OBJDIR)/%.o) $(ASRC:%.S=$(OBJDIR)/%.o) 
+
+# Define all listing files.
+LST = $(SRC:%.c=$(OBJDIR)/%.lst) $(CPPSRC:%.cpp=$(OBJDIR)/%.lst) $(ASRC:%.S=$(OBJDIR)/%.lst) 
+
+
+# Compiler flags to generate dependency files.
+GENDEPFLAGS = -MMD -MP -MF .dep/$(@F).d
+
+
+# Combine all necessary flags and optional flags.
+# Add target processor to flags.
+ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS)
+ALL_CPPFLAGS = -mmcu=$(MCU) -I. -x c++ $(CPPFLAGS) $(GENDEPFLAGS)
+ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
+
+
+
+
+
+# Default target.
+all: begin gccversion sizebefore build sizeafter end
+
+# Change the build target to build a HEX file or a library.
+build: elf hex eep lss sym
+#build: lib
+
+
+elf: $(TARGET).elf
+hex: $(TARGET).hex
+eep: $(TARGET).eep
+lss: $(TARGET).lss
+sym: $(TARGET).sym
+LIBNAME=lib$(TARGET).a
+lib: $(LIBNAME)
+
+
+
+# Eye candy.
+# AVR Studio 3.x does not check make's exit code but relies on
+# the following magic strings to be generated by the compile job.
+begin:
+	@echo
+	@echo $(MSG_BEGIN)
+
+end:
+	@echo $(MSG_END)
+	@echo
+
+
+# Display size of file.
+HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
+ELFSIZE = $(SIZE) $(MCU_FLAG) $(FORMAT_FLAG) $(TARGET).elf
+MCU_FLAG = $(shell $(SIZE) --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
+FORMAT_FLAG = $(shell $(SIZE) --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
+
+
+sizebefore:
+	@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); \
+	2>/dev/null; echo; fi
+
+sizeafter:
+	@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); \
+	2>/dev/null; echo; fi
+
+
+
+# Display compiler version information.
+gccversion : 
+	@$(CC) --version
+
+
+# Program the device.  
+program: $(TARGET).hex $(TARGET).eep
+	$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM) $(AVRDUDE_FUSES) $(AVRDUDE_LOCK)
+
+
+# Generate avr-gdb config/init file which does the following:
+#     define the reset signal, load the target file, connect to target, and set 
+#     a breakpoint at main().
+gdb-config: 
+	@$(REMOVE) $(GDBINIT_FILE)
+	@echo define reset >> $(GDBINIT_FILE)
+	@echo SIGNAL SIGHUP >> $(GDBINIT_FILE)
+	@echo end >> $(GDBINIT_FILE)
+	@echo file $(TARGET).elf >> $(GDBINIT_FILE)
+	@echo target remote $(DEBUG_HOST):$(DEBUG_PORT)  >> $(GDBINIT_FILE)
+ifeq ($(DEBUG_BACKEND),simulavr)
+	@echo load  >> $(GDBINIT_FILE)
+endif
+	@echo break main >> $(GDBINIT_FILE)
+
+debug: gdb-config $(TARGET).elf
+ifeq ($(DEBUG_BACKEND), avarice)
+	@echo Starting AVaRICE - Press enter when "waiting to connect" message displays.
+	@$(WINSHELL) /c start avarice --jtag $(JTAG_DEV) --erase --program --file \
+	$(TARGET).elf $(DEBUG_HOST):$(DEBUG_PORT)
+	@$(WINSHELL) /c pause
+
+else
+	@$(WINSHELL) /c start simulavr --gdbserver --device $(MCU) --clock-freq \
+	$(DEBUG_MFREQ) --port $(DEBUG_PORT)
+endif
+	@$(WINSHELL) /c start avr-$(DEBUG_UI) --command=$(GDBINIT_FILE)
+
+
+
+
+# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.
+COFFCONVERT = $(OBJCOPY) --debugging
+COFFCONVERT += --change-section-address .data-0x800000
+COFFCONVERT += --change-section-address .bss-0x800000
+COFFCONVERT += --change-section-address .noinit-0x800000
+COFFCONVERT += --change-section-address .eeprom-0x810000
+
+
+
+coff: $(TARGET).elf
+	@echo
+	@echo $(MSG_COFF) $(TARGET).cof
+	$(COFFCONVERT) -O coff-avr $< $(TARGET).cof
+
+
+extcoff: $(TARGET).elf
+	@echo
+	@echo $(MSG_EXTENDED_COFF) $(TARGET).cof
+	$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof
+
+
+
+# Create final output files (.hex, .eep) from ELF output file.
+%.hex: %.elf
+	@echo
+	@echo $(MSG_FLASH) $@
+	$(OBJCOPY) -O $(FORMAT) -R .eeprom -R .fuse -R .lock $< $@
+
+%.eep: %.elf
+	@echo
+	@echo $(MSG_EEPROM) $@
+	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
+	--change-section-lma .eeprom=0 --no-change-warnings -O $(FORMAT) $< $@ || exit 0
+
+# Create extended listing file from ELF output file.
+%.lss: %.elf
+	@echo
+	@echo $(MSG_EXTENDED_LISTING) $@
+	$(OBJDUMP) -h -S -z $< > $@
+
+# Create a symbol table from ELF output file.
+%.sym: %.elf
+	@echo
+	@echo $(MSG_SYMBOL_TABLE) $@
+	$(NM) -n $< > $@
+
+
+
+# Create library from object files.
+.SECONDARY : $(TARGET).a
+.PRECIOUS : $(OBJ)
+%.a: $(OBJ)
+	@echo
+	@echo $(MSG_CREATING_LIBRARY) $@
+	$(AR) $@ $(OBJ)
+
+
+# Link: create ELF output file from object files.
+.SECONDARY : $(TARGET).elf
+.PRECIOUS : $(OBJ)
+%.elf: $(OBJ)
+	@echo
+	@echo $(MSG_LINKING) $@
+	$(CC) $(ALL_CFLAGS) $^ --output $@ $(LDFLAGS)
+
+
+# Compile: create object files from C source files.
+$(OBJDIR)/%.o : %.c
+	@echo
+	@echo $(MSG_COMPILING) $<
+	$(CC) -c $(ALL_CFLAGS) $< -o $@ 
+
+
+# Compile: create object files from C++ source files.
+$(OBJDIR)/%.o : %.cpp
+	@echo
+	@echo $(MSG_COMPILING_CPP) $<
+	$(CC) -c $(ALL_CPPFLAGS) $< -o $@ 
+
+
+# Compile: create assembler files from C source files.
+%.s : %.c
+	$(CC) -S $(ALL_CFLAGS) $< -o $@
+
+
+# Compile: create assembler files from C++ source files.
+%.s : %.cpp
+	$(CC) -S $(ALL_CPPFLAGS) $< -o $@
+
+
+# Assemble: create object files from assembler source files.
+$(OBJDIR)/%.o : %.S
+	@echo
+	@echo $(MSG_ASSEMBLING) $<
+	$(CC) -c $(ALL_ASFLAGS) $< -o $@
+
+
+# Create preprocessed source for use in sending a bug report.
+%.i : %.c
+	$(CC) -E -mmcu=$(MCU) -I. $(CFLAGS) $< -o $@ 
+
+
+# Target: clean project.
+clean: begin clean_list end
+
+clean_list :
+	@echo
+	@echo $(MSG_CLEANING)
+	$(REMOVE) $(TARGET).hex
+	$(REMOVE) $(TARGET).eep
+	$(REMOVE) $(TARGET).cof
+	$(REMOVE) $(TARGET).elf
+	$(REMOVE) $(TARGET).map
+	$(REMOVE) $(TARGET).sym
+	$(REMOVE) $(TARGET).lss
+	$(REMOVE) $(SRC:%.c=$(OBJDIR)/%.o)
+	$(REMOVE) $(SRC:%.c=$(OBJDIR)/%.lst)
+	$(REMOVE) $(SRC:.c=.s)
+	$(REMOVE) $(SRC:.c=.d)
+	$(REMOVE) $(SRC:.c=.i)
+	$(REMOVEDIR) .dep
+
+doxygen:
+	@echo Generating Project Documentation...
+	@doxygen Doxygen.conf
+	@echo Documentation Generation Complete.
+
+clean_doxygen:
+	rm -rf Documentation
+
+# Create object files directory
+$(shell mkdir $(OBJDIR) 2>/dev/null)
+
+
+# Include the dependency files.
+-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
+
+
+# Listing of phony targets.
+.PHONY : all begin finish end sizebefore sizeafter gccversion \
+build elf hex eep lss sym coff extcoff doxygen clean          \
+clean_list clean_doxygen program debug gdb-config
diff --git a/firmwares/atmegaxxu2/arduino-usbdfu/readme.txt b/firmwares/atmegaxxu2/arduino-usbdfu/readme.txt
new file mode 100644
index 0000000..e376679
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbdfu/readme.txt
@@ -0,0 +1,7 @@
+To setup the project and program an ATMEG8U2 with the Arduino USB DFU bootloader:
+1. unpack the source into LUFA's Bootloader directory
+2. set ARDUINO_MODEL_PID in the makefile as appropriate 
+3. do "make clean; make; make program"
+
+Check that the board enumerates as either "Arduino Uno DFU" or "Arduino Mega 2560 DFU".  Test by uploading the Arduino-usbserial application firmware (see instructions in Arduino-usbserial directory)
+
diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-atmega16u2-Mega2560-Rev3.hex b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-atmega16u2-Mega2560-Rev3.hex
new file mode 100644
index 0000000..efbbf15
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-atmega16u2-Mega2560-Rev3.hex
@@ -0,0 +1,254 @@
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diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-atmega16u2-MegaADK-Rev3.hex b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-atmega16u2-MegaADK-Rev3.hex
new file mode 100644
index 0000000..3af6a24
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-atmega16u2-MegaADK-Rev3.hex
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--- /dev/null
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diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-mega.hex b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-mega.hex
new file mode 100644
index 0000000..fbbeb07
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-mega.hex
@@ -0,0 +1,256 @@
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diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-uno.hex b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-uno.hex
new file mode 100644
index 0000000..ca51dfa
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial-uno.hex
@@ -0,0 +1,256 @@
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diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.c b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.c
new file mode 100755
index 0000000..4de73c8
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.c
@@ -0,0 +1,242 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Main source file for the Arduino-usbserial project. This file contains the main tasks of
+ *  the project and is responsible for the initial application hardware configuration.
+ */
+
+#include "Arduino-usbserial.h"
+
+/** Circular buffer to hold data from the host before it is sent to the device via the serial port. */
+RingBuff_t USBtoUSART_Buffer;
+
+/** Circular buffer to hold data from the serial port before it is sent to the host. */
+RingBuff_t USARTtoUSB_Buffer;
+
+/** Pulse generation counters to keep track of the number of milliseconds remaining for each pulse type */
+volatile struct
+{
+	uint8_t TxLEDPulse; /**< Milliseconds remaining for data Tx LED pulse */
+	uint8_t RxLEDPulse; /**< Milliseconds remaining for data Rx LED pulse */
+	uint8_t PingPongLEDPulse; /**< Milliseconds remaining for enumeration Tx/Rx ping-pong LED pulse */
+} PulseMSRemaining;
+
+/** LUFA CDC Class driver interface configuration and state information. This structure is
+ *  passed to all CDC Class driver functions, so that multiple instances of the same class
+ *  within a device can be differentiated from one another.
+ */
+USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
+	{
+		.Config = 
+			{
+				.ControlInterfaceNumber         = 0,
+
+				.DataINEndpointNumber           = CDC_TX_EPNUM,
+				.DataINEndpointSize             = CDC_TXRX_EPSIZE,
+				.DataINEndpointDoubleBank       = false,
+
+				.DataOUTEndpointNumber          = CDC_RX_EPNUM,
+				.DataOUTEndpointSize            = CDC_TXRX_EPSIZE,
+				.DataOUTEndpointDoubleBank      = false,
+
+				.NotificationEndpointNumber     = CDC_NOTIFICATION_EPNUM,
+				.NotificationEndpointSize       = CDC_NOTIFICATION_EPSIZE,
+				.NotificationEndpointDoubleBank = false,
+			},
+	};
+
+/** Main program entry point. This routine contains the overall program flow, including initial
+ *  setup of all components and the main program loop.
+ */
+int main(void)
+{
+	SetupHardware();
+	
+	RingBuffer_InitBuffer(&USBtoUSART_Buffer);
+	RingBuffer_InitBuffer(&USARTtoUSB_Buffer);
+
+	sei();
+
+	for (;;)
+	{
+		/* Only try to read in bytes from the CDC interface if the transmit buffer is not full */
+		if (!(RingBuffer_IsFull(&USBtoUSART_Buffer)))
+		{
+			int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
+
+			/* Read bytes from the USB OUT endpoint into the USART transmit buffer */
+			if (!(ReceivedByte < 0))
+			  RingBuffer_Insert(&USBtoUSART_Buffer, ReceivedByte);
+		}
+		
+		/* Check if the UART receive buffer flush timer has expired or the buffer is nearly full */
+		RingBuff_Count_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
+		if ((TIFR0 & (1 << TOV0)) || (BufferCount > BUFFER_NEARLY_FULL))
+		{
+			TIFR0 |= (1 << TOV0);
+
+			if (USARTtoUSB_Buffer.Count) {
+				LEDs_TurnOnLEDs(LEDMASK_TX);
+				PulseMSRemaining.TxLEDPulse = TX_RX_LED_PULSE_MS;
+			}
+
+			/* Read bytes from the USART receive buffer into the USB IN endpoint */
+			while (BufferCount--)
+			  CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&USARTtoUSB_Buffer));
+			  
+			/* Turn off TX LED(s) once the TX pulse period has elapsed */
+			if (PulseMSRemaining.TxLEDPulse && !(--PulseMSRemaining.TxLEDPulse))
+			  LEDs_TurnOffLEDs(LEDMASK_TX);
+
+			/* Turn off RX LED(s) once the RX pulse period has elapsed */
+			if (PulseMSRemaining.RxLEDPulse && !(--PulseMSRemaining.RxLEDPulse))
+			  LEDs_TurnOffLEDs(LEDMASK_RX);
+		}
+		
+		/* Load the next byte from the USART transmit buffer into the USART */
+		if (!(RingBuffer_IsEmpty(&USBtoUSART_Buffer))) {
+		  Serial_TxByte(RingBuffer_Remove(&USBtoUSART_Buffer));
+		  	
+		  	LEDs_TurnOnLEDs(LEDMASK_RX);
+			PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS;
+		}
+		
+		CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
+		USB_USBTask();
+	}
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+	/* Disable watchdog if enabled by bootloader/fuses */
+	MCUSR &= ~(1 << WDRF);
+	wdt_disable();
+
+	/* Hardware Initialization */
+	Serial_Init(9600, false);
+	LEDs_Init();
+	USB_Init();
+
+	/* Start the flush timer so that overflows occur rapidly to push received bytes to the USB interface */
+	TCCR0B = (1 << CS02);
+	
+	/* Pull target /RESET line high */
+	AVR_RESET_LINE_PORT |= AVR_RESET_LINE_MASK;
+	AVR_RESET_LINE_DDR  |= AVR_RESET_LINE_MASK;
+}
+
+/** Event handler for the library USB Configuration Changed event. */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+	CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
+}
+
+/** Event handler for the library USB Unhandled Control Request event. */
+void EVENT_USB_Device_UnhandledControlRequest(void)
+{
+	CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
+}
+
+/** Event handler for the CDC Class driver Line Encoding Changed event.
+ *
+ *  \param[in] CDCInterfaceInfo  Pointer to the CDC class interface configuration structure being referenced
+ */
+void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
+{
+	uint8_t ConfigMask = 0;
+
+	switch (CDCInterfaceInfo->State.LineEncoding.ParityType)
+	{
+		case CDC_PARITY_Odd:
+			ConfigMask = ((1 << UPM11) | (1 << UPM10));		
+			break;
+		case CDC_PARITY_Even:
+			ConfigMask = (1 << UPM11);		
+			break;
+	}
+
+	if (CDCInterfaceInfo->State.LineEncoding.CharFormat == CDC_LINEENCODING_TwoStopBits)
+	  ConfigMask |= (1 << USBS1);
+
+	switch (CDCInterfaceInfo->State.LineEncoding.DataBits)
+	{
+		case 6:
+			ConfigMask |= (1 << UCSZ10);
+			break;
+		case 7:
+			ConfigMask |= (1 << UCSZ11);
+			break;
+		case 8:
+			ConfigMask |= ((1 << UCSZ11) | (1 << UCSZ10));
+			break;
+	}
+
+	/* Must turn off USART before reconfiguring it, otherwise incorrect operation may occur */
+	UCSR1B = 0;
+	UCSR1A = 0;
+	UCSR1C = 0;
+
+	/* Special case 57600 baud for compatibility with the ATmega328 bootloader. */	
+	UBRR1  = (CDCInterfaceInfo->State.LineEncoding.BaudRateBPS == 57600)
+			 ? SERIAL_UBBRVAL(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS)
+			 : SERIAL_2X_UBBRVAL(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS);	
+
+	UCSR1C = ConfigMask;
+	UCSR1A = (CDCInterfaceInfo->State.LineEncoding.BaudRateBPS == 57600) ? 0 : (1 << U2X1);
+	UCSR1B = ((1 << RXCIE1) | (1 << TXEN1) | (1 << RXEN1));
+}
+
+/** ISR to manage the reception of data from the serial port, placing received bytes into a circular buffer
+ *  for later transmission to the host.
+ */
+ISR(USART1_RX_vect, ISR_BLOCK)
+{
+	uint8_t ReceivedByte = UDR1;
+
+	if (USB_DeviceState == DEVICE_STATE_Configured)
+	  RingBuffer_Insert(&USARTtoUSB_Buffer, ReceivedByte);
+}
+
+/** Event handler for the CDC Class driver Host-to-Device Line Encoding Changed event.
+ *
+ *  \param[in] CDCInterfaceInfo  Pointer to the CDC class interface configuration structure being referenced
+ */
+void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
+{
+	bool CurrentDTRState = (CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR);
+
+	if (CurrentDTRState)
+	  AVR_RESET_LINE_PORT &= ~AVR_RESET_LINE_MASK;
+	else
+	  AVR_RESET_LINE_PORT |= AVR_RESET_LINE_MASK;
+}
diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.h b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.h
new file mode 100755
index 0000000..99fde39
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.h
@@ -0,0 +1,79 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Header file for Arduino-usbserial.c.
+ */
+
+#ifndef _ARDUINO_USBSERIAL_H_
+#define _ARDUINO_USBSERIAL_H_
+
+	/* Includes: */
+		#include <avr/io.h>
+		#include <avr/wdt.h>
+		#include <avr/interrupt.h>
+		#include <avr/power.h>
+
+		#include "Descriptors.h"
+
+		#include "Lib/LightweightRingBuff.h"
+
+		#include <LUFA/Version.h>
+		#include <LUFA/Drivers/Board/LEDs.h>
+		#include <LUFA/Drivers/Peripheral/Serial.h>
+		#include <LUFA/Drivers/USB/USB.h>
+		#include <LUFA/Drivers/USB/Class/CDC.h>
+		
+	/* Macros: */
+		/** LED mask for the library LED driver, to indicate TX activity. */
+		#define LEDMASK_TX               LEDS_LED1
+
+		/** LED mask for the library LED driver, to indicate RX activity. */
+		#define LEDMASK_RX               LEDS_LED2
+		
+		/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
+		#define LEDMASK_ERROR            (LEDS_LED1 | LEDS_LED2)
+		
+		/** LED mask for the library LED driver, to indicate that the USB interface is busy. */
+		#define LEDMASK_BUSY             (LEDS_LED1 | LEDS_LED2)		
+		
+	/* Function Prototypes: */
+		void SetupHardware(void);
+
+		void EVENT_USB_Device_Connect(void);
+		void EVENT_USB_Device_Disconnect(void);
+		void EVENT_USB_Device_ConfigurationChanged(void);
+		void EVENT_USB_Device_UnhandledControlRequest(void);
+		
+		void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo);
+		void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo);		
+
+#endif /* _ARDUINO_USBSERIAL_H_ */
diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Board/LEDs.h b/firmwares/atmegaxxu2/arduino-usbserial/Board/LEDs.h
new file mode 100755
index 0000000..152e8f5
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/Board/LEDs.h
@@ -0,0 +1,110 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/*
+   Board LEDs driver for the Benito board, from www.dorkbotpdx.org.
+*/
+
+#ifndef __LEDS_ARDUINOUNO_H__
+#define __LEDS_ARDUINOUNO_H__
+
+	/* Includes: */
+		#include <avr/io.h>
+
+/* Enable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			extern "C" {
+		#endif
+
+	/* Preprocessor Checks: */
+		#if !defined(INCLUDE_FROM_LEDS_H)
+			#error Do not include this file directly. Include LUFA/Drivers/Board/LEDS.h instead.
+		#endif
+
+	/* Public Interface - May be used in end-application: */
+		/* Macros: */
+			/** LED mask for the first LED on the board. */
+			#define LEDS_LED1        (1 << 5)
+
+			/** LED mask for the second LED on the board. */
+			#define LEDS_LED2        (1 << 4)
+
+			/** LED mask for all the LEDs on the board. */
+			#define LEDS_ALL_LEDS    (LEDS_LED1 | LEDS_LED2)
+
+			/** LED mask for the none of the board LEDs */
+			#define LEDS_NO_LEDS     0
+
+		/* Inline Functions: */
+		#if !defined(__DOXYGEN__)
+			static inline void LEDs_Init(void)
+			{
+				DDRD  |= LEDS_ALL_LEDS;
+				PORTD |= LEDS_ALL_LEDS;
+			}
+			
+			static inline void LEDs_TurnOnLEDs(const uint8_t LEDMask)
+			{
+				PORTD &= ~LEDMask;
+			}
+
+			static inline void LEDs_TurnOffLEDs(const uint8_t LEDMask)
+			{
+				PORTD |= LEDMask;
+			}
+
+			static inline void LEDs_SetAllLEDs(const uint8_t LEDMask)
+			{
+				PORTD = ((PORTD | LEDS_ALL_LEDS) & ~LEDMask);
+			}
+			
+			static inline void LEDs_ChangeLEDs(const uint8_t LEDMask, const uint8_t ActiveMask)
+			{
+				PORTD = ((PORTD | ActiveMask) & ~LEDMask);
+			}
+
+			static inline void LEDs_ToggleLEDs(const uint8_t LEDMask)
+			{
+				PORTD ^= LEDMask;
+			}
+			
+			static inline uint8_t LEDs_GetLEDs(void) ATTR_WARN_UNUSED_RESULT;
+			static inline uint8_t LEDs_GetLEDs(void)
+			{
+				return (PORTD & LEDS_ALL_LEDS);
+			}
+		#endif
+
+	/* Disable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			}
+		#endif
+		
+#endif
diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Descriptors.c b/firmwares/atmegaxxu2/arduino-usbserial/Descriptors.c
new file mode 100755
index 0000000..705dddf
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/Descriptors.c
@@ -0,0 +1,277 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  USB Device Descriptors, for library use when in USB device mode. Descriptors are special 
+ *  computer-readable structures which the host requests upon device enumeration, to determine
+ *  the device's capabilities and functions.  
+ */
+
+#include "Descriptors.h"
+
+/* On some devices, there is a factory set internal serial number which can be automatically sent to the host as
+ * the device's serial number when the Device Descriptor's .SerialNumStrIndex entry is set to USE_INTERNAL_SERIAL.
+ * This allows the host to track a device across insertions on different ports, allowing them to retain allocated
+ * resources like COM port numbers and drivers. On demos using this feature, give a warning on unsupported devices
+ * so that the user can supply their own serial number descriptor instead or remove the USE_INTERNAL_SERIAL value
+ * from the Device Descriptor (forcing the host to generate a serial number for each device from the VID, PID and
+ * port location).
+ */
+#if (USE_INTERNAL_SERIAL == NO_DESCRIPTOR)
+	#warning USE_INTERNAL_SERIAL is not available on this AVR - please manually construct a device serial descriptor.
+#endif
+
+/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
+ *  device characteristics, including the supported USB version, control endpoint size and the
+ *  number of device configurations. The descriptor is read out by the USB host when the enumeration
+ *  process begins.
+ */
+USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
+{
+	.Header                 = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
+		
+	.USBSpecification       = VERSION_BCD(01.10),
+	.Class                  = 0x02,
+	.SubClass               = 0x00,
+	.Protocol               = 0x00,
+				
+	.Endpoint0Size          = FIXED_CONTROL_ENDPOINT_SIZE,
+		
+	.VendorID               = 0x03EB, // Atmel
+
+	.ProductID          	= 0x204B, // LUFA USB to Serial Demo Application
+	.ReleaseNumber          = 0x0001,
+		
+	.ManufacturerStrIndex   = 0x01,
+	.ProductStrIndex        = 0x02,
+	.SerialNumStrIndex      = USE_INTERNAL_SERIAL,
+		
+	.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
+};
+
+/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
+ *  of the device in one of its supported configurations, including information about any device interfaces
+ *  and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
+ *  a configuration so that the host may correctly communicate with the USB device.
+ */
+USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
+{
+	.Config = 
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},
+
+			.TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
+			.TotalInterfaces        = 2,
+				
+			.ConfigurationNumber    = 1,
+			.ConfigurationStrIndex  = NO_DESCRIPTOR,
+				
+			.ConfigAttributes       = (USB_CONFIG_ATTR_BUSPOWERED | USB_CONFIG_ATTR_SELFPOWERED),
+			
+			.MaxPowerConsumption    = USB_CONFIG_POWER_MA(100)
+		},
+		
+	.CDC_CCI_Interface = 
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
+
+			.InterfaceNumber        = 0,
+			.AlternateSetting       = 0,
+			
+			.TotalEndpoints         = 1,
+				
+			.Class                  = 0x02,
+			.SubClass               = 0x02,
+			.Protocol               = 0x01,
+				
+			.InterfaceStrIndex      = NO_DESCRIPTOR
+		},
+
+	.CDC_Functional_IntHeader = 
+		{
+			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
+			.SubType                = 0x00,
+			
+			.Data                   = {0x01, 0x10}
+		},
+
+	.CDC_Functional_AbstractControlManagement = 
+		{
+			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(1)), .Type = 0x24},
+			.SubType                = 0x02,
+			
+			.Data                   = {0x06}
+		},
+		
+	.CDC_Functional_Union = 
+		{
+			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
+			.SubType                = 0x06,
+			
+			.Data                   = {0x00, 0x01}
+		},
+
+	.CDC_NotificationEndpoint = 
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+			
+			.EndpointAddress        = (ENDPOINT_DESCRIPTOR_DIR_IN | CDC_NOTIFICATION_EPNUM),
+			.Attributes             = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+			.EndpointSize           = CDC_NOTIFICATION_EPSIZE,
+			.PollingIntervalMS      = 0xFF
+		},
+
+	.CDC_DCI_Interface = 
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
+
+			.InterfaceNumber        = 1,
+			.AlternateSetting       = 0,
+			
+			.TotalEndpoints         = 2,
+				
+			.Class                  = 0x0A,
+			.SubClass               = 0x00,
+			.Protocol               = 0x00,
+				
+			.InterfaceStrIndex      = NO_DESCRIPTOR
+		},
+
+	.CDC_DataOutEndpoint = 
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+			
+			.EndpointAddress        = (ENDPOINT_DESCRIPTOR_DIR_OUT | CDC_RX_EPNUM),
+			.Attributes             = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+			.EndpointSize           = CDC_TXRX_EPSIZE,
+			.PollingIntervalMS      = 0x01
+		},
+		
+	.CDC_DataInEndpoint = 
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+			
+			.EndpointAddress        = (ENDPOINT_DESCRIPTOR_DIR_IN | CDC_TX_EPNUM),
+			.Attributes             = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+			.EndpointSize           = CDC_TXRX_EPSIZE,
+			.PollingIntervalMS      = 0x01
+		}
+};
+
+/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
+ *  the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
+ *  via the language ID table available at USB.org what languages the device supports for its string descriptors.
+ */
+USB_Descriptor_String_t PROGMEM LanguageString =
+{
+	.Header                 = {.Size = USB_STRING_LEN(1), .Type = DTYPE_String},
+		
+	.UnicodeString          = {LANGUAGE_ID_ENG}
+};
+
+/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
+ *  form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
+ *  Descriptor.
+ */
+USB_Descriptor_String_t PROGMEM ManufacturerString =
+{
+	.Header                 = {.Size = USB_STRING_LEN(24), .Type = DTYPE_String},
+		
+	.UnicodeString          = L"Arduino (www.arduino.cc)"
+};
+
+/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
+ *  and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
+ *  Descriptor.
+ */
+USB_Descriptor_String_t PROGMEM ProductString =
+{
+	#if (ARDUINO_MODEL_PID == ARDUINO_UNO_PID)
+		.Header                 = {.Size = USB_STRING_LEN(11), .Type = DTYPE_String},
+			
+		.UnicodeString          = L"Arduino Uno"
+	#elif (ARDUINO_MODEL_PID == ARDUINO_MEGA2560_PID)
+		.Header                 = {.Size = USB_STRING_LEN(17), .Type = DTYPE_String},
+			
+		.UnicodeString          = L"Arduino Mega 2560"
+	#endif
+	
+};
+
+/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
+ *  documentation) by the application code so that the address and size of a requested descriptor can be given
+ *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
+ *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
+ *  USB host.
+ */
+uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
+                                    const uint8_t wIndex,
+                                    void** const DescriptorAddress)
+{
+	const uint8_t  DescriptorType   = (wValue >> 8);
+	const uint8_t  DescriptorNumber = (wValue & 0xFF);
+
+	void*    Address = NULL;
+	uint16_t Size    = NO_DESCRIPTOR;
+
+	switch (DescriptorType)
+	{
+		case DTYPE_Device: 
+			Address = (void*)&DeviceDescriptor;
+			Size    = sizeof(USB_Descriptor_Device_t);
+			break;
+		case DTYPE_Configuration: 
+			Address = (void*)&ConfigurationDescriptor;
+			Size    = sizeof(USB_Descriptor_Configuration_t);
+			break;
+		case DTYPE_String: 
+			switch (DescriptorNumber)
+			{
+				case 0x00: 
+					Address = (void*)&LanguageString;
+					Size    = pgm_read_byte(&LanguageString.Header.Size);
+					break;
+				case 0x01: 
+					Address = (void*)&ManufacturerString;
+					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
+					break;
+				case 0x02: 
+					Address = (void*)&ProductString;
+					Size    = pgm_read_byte(&ProductString.Header.Size);
+					break;
+			}
+			
+			break;
+	}
+	
+	*DescriptorAddress = Address;
+	return Size;
+}
diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Descriptors.h b/firmwares/atmegaxxu2/arduino-usbserial/Descriptors.h
new file mode 100755
index 0000000..3ac4e52
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/Descriptors.h
@@ -0,0 +1,88 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Header file for Descriptors.c.
+ */
+ 
+#ifndef _DESCRIPTORS_H_
+#define _DESCRIPTORS_H_
+
+	/* Includes: */
+		#include <avr/pgmspace.h>
+
+		#include <LUFA/Drivers/USB/USB.h>
+		#include <LUFA/Drivers/USB/Class/CDC.h>
+		
+	/* Product-specific definitions: */
+		#define ARDUINO_UNO_PID				0x0001
+		#define ARDUINO_MEGA2560_PID		0x0010
+
+	/* Macros: */
+		/** Endpoint number of the CDC device-to-host notification IN endpoint. */
+		#define CDC_NOTIFICATION_EPNUM         2
+
+		/** Endpoint number of the CDC device-to-host data IN endpoint. */
+		#define CDC_TX_EPNUM                   3	
+
+		/** Endpoint number of the CDC host-to-device data OUT endpoint. */
+		#define CDC_RX_EPNUM                   4	
+
+		/** Size in bytes of the CDC device-to-host notification IN endpoint. */
+		#define CDC_NOTIFICATION_EPSIZE        8
+
+		/** Size in bytes of the CDC data IN and OUT endpoints. */
+		#define CDC_TXRX_EPSIZE                64	
+
+	/* Type Defines: */
+		/** Type define for the device configuration descriptor structure. This must be defined in the
+		 *  application code, as the configuration descriptor contains several sub-descriptors which
+		 *  vary between devices, and which describe the device's usage to the host.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Configuration_Header_t    Config;
+			USB_Descriptor_Interface_t               CDC_CCI_Interface;
+			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC_Functional_IntHeader;
+			CDC_FUNCTIONAL_DESCRIPTOR(1)             CDC_Functional_AbstractControlManagement;
+			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC_Functional_Union;
+			USB_Descriptor_Endpoint_t                CDC_NotificationEndpoint;
+			USB_Descriptor_Interface_t               CDC_DCI_Interface;
+			USB_Descriptor_Endpoint_t                CDC_DataOutEndpoint;
+			USB_Descriptor_Endpoint_t                CDC_DataInEndpoint;
+		} USB_Descriptor_Configuration_t;
+
+	/* Function Prototypes: */
+		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
+		                                    const uint8_t wIndex,
+		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+
+#endif
diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Lib/LightweightRingBuff.h b/firmwares/atmegaxxu2/arduino-usbserial/Lib/LightweightRingBuff.h
new file mode 100755
index 0000000..fb48c1f
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/Lib/LightweightRingBuff.h
@@ -0,0 +1,197 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Ultra lightweight ring buffer, for fast insertion/deletion.
+ */
+ 
+#ifndef _ULW_RING_BUFF_H_
+#define _ULW_RING_BUFF_H_
+
+	/* Includes: */
+		#include <util/atomic.h>
+	
+		#include <stdint.h>
+		#include <stdbool.h>
+
+	/* Defines: */
+		/** Size of each ring buffer, in data elements - must be between 1 and 255. */
+		#define BUFFER_SIZE         128
+		
+		/** Maximum number of data elements to buffer before forcing a flush. 
+		 *  Must be less than BUFFER_SIZE
+		 */
+		#define BUFFER_NEARLY_FULL	96
+		
+		/** Type of data to store into the buffer. */
+		#define RingBuff_Data_t     uint8_t
+
+		/** Datatype which may be used to store the count of data stored in a buffer, retrieved
+		 *  via a call to \ref RingBuffer_GetCount().
+		 */
+		#if (BUFFER_SIZE <= 0xFF)
+			#define RingBuff_Count_t   uint8_t
+		#else
+			#define RingBuff_Count_t   uint16_t
+		#endif
+
+	/* Type Defines: */
+		/** Type define for a new ring buffer object. Buffers should be initialized via a call to
+		 *  \ref RingBuffer_InitBuffer() before use.
+		 */
+		typedef struct
+		{
+			RingBuff_Data_t  Buffer[BUFFER_SIZE]; /**< Internal ring buffer data, referenced by the buffer pointers. */
+			RingBuff_Data_t* In; /**< Current storage location in the circular buffer */
+			RingBuff_Data_t* Out; /**< Current retrieval location in the circular buffer */
+			RingBuff_Count_t Count;
+		} RingBuff_t;
+	
+	/* Inline Functions: */
+		/** Initializes a ring buffer ready for use. Buffers must be initialized via this function
+		 *  before any operations are called upon them. Already initialized buffers may be reset
+		 *  by re-initializing them using this function.
+		 *
+		 *  \param[out] Buffer  Pointer to a ring buffer structure to initialize
+		 */
+		static inline void RingBuffer_InitBuffer(RingBuff_t* const Buffer)
+		{
+			ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
+			{
+				Buffer->In  = Buffer->Buffer;
+				Buffer->Out = Buffer->Buffer;
+			}
+		}
+		
+		/** Retrieves the minimum number of bytes stored in a particular buffer. This value is computed
+		 *  by entering an atomic lock on the buffer while the IN and OUT locations are fetched, so that
+		 *  the buffer cannot be modified while the computation takes place. This value should be cached
+		 *  when reading out the contents of the buffer, so that as small a time as possible is spent
+		 *  in an atomic lock.
+		 *
+		 *  \note The value returned by this function is guaranteed to only be the minimum number of bytes
+		 *        stored in the given buffer; this value may change as other threads write new data and so
+		 *        the returned number should be used only to determine how many successive reads may safely
+		 *        be performed on the buffer.
+		 *
+		 *  \param[in] Buffer  Pointer to a ring buffer structure whose count is to be computed
+		 */
+		static inline RingBuff_Count_t RingBuffer_GetCount(RingBuff_t* const Buffer)
+		{
+			RingBuff_Count_t Count;
+			
+			ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
+			{
+				Count = Buffer->Count;
+			}
+			
+			return Count;
+		}
+		
+		/** Atomically determines if the specified ring buffer contains any free space. This should
+		 *  be tested before storing data to the buffer, to ensure that no data is lost due to a
+		 *  buffer overrun.
+		 *
+		 *  \param[in,out] Buffer  Pointer to a ring buffer structure to insert into
+		 *
+		 *  \return Boolean true if the buffer contains no free space, false otherwise
+		 */		 
+		static inline bool RingBuffer_IsFull(RingBuff_t* const Buffer)
+		{
+			return (RingBuffer_GetCount(Buffer) == BUFFER_SIZE);
+		}
+
+		/** Atomically determines if the specified ring buffer contains any data. This should
+		 *  be tested before removing data from the buffer, to ensure that the buffer does not
+		 *  underflow.
+		 *
+		 *  If the data is to be removed in a loop, store the total number of bytes stored in the
+		 *  buffer (via a call to the \ref RingBuffer_GetCount() function) in a temporary variable
+		 *  to reduce the time spent in atomicity locks.
+		 *
+		 *  \param[in,out] Buffer  Pointer to a ring buffer structure to insert into
+		 *
+		 *  \return Boolean true if the buffer contains no free space, false otherwise
+		 */		 
+		static inline bool RingBuffer_IsEmpty(RingBuff_t* const Buffer)
+		{
+			return (RingBuffer_GetCount(Buffer) == 0);
+		}
+
+		/** Inserts an element into the ring buffer.
+		 *
+		 *  \note Only one execution thread (main program thread or an ISR) may insert into a single buffer
+		 *        otherwise data corruption may occur. Insertion and removal may occur from different execution
+		 *        threads.
+		 *
+		 *  \param[in,out] Buffer  Pointer to a ring buffer structure to insert into
+		 *  \param[in]     Data    Data element to insert into the buffer
+		 */
+		static inline void RingBuffer_Insert(RingBuff_t* const Buffer,
+		                                     const RingBuff_Data_t Data)
+		{
+			*Buffer->In = Data;
+			
+			if (++Buffer->In == &Buffer->Buffer[BUFFER_SIZE])
+			  Buffer->In = Buffer->Buffer;
+
+			ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
+			{
+				Buffer->Count++;
+			}
+		}
+
+		/** Removes an element from the ring buffer.
+		 *
+		 *  \note Only one execution thread (main program thread or an ISR) may remove from a single buffer
+		 *        otherwise data corruption may occur. Insertion and removal may occur from different execution
+		 *        threads.
+		 *
+		 *  \param[in,out] Buffer  Pointer to a ring buffer structure to retrieve from
+		 *
+		 *  \return Next data element stored in the buffer
+		 */
+		static inline RingBuff_Data_t RingBuffer_Remove(RingBuff_t* const Buffer)
+		{
+			RingBuff_Data_t Data = *Buffer->Out;
+			
+			if (++Buffer->Out == &Buffer->Buffer[BUFFER_SIZE])
+			  Buffer->Out = Buffer->Buffer;
+
+			ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
+			{
+				Buffer->Count--;
+			}
+			
+			return Data;
+		}
+
+#endif
diff --git a/firmwares/atmegaxxu2/arduino-usbserial/makefile b/firmwares/atmegaxxu2/arduino-usbserial/makefile
new file mode 100755
index 0000000..79d6be2
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/makefile
@@ -0,0 +1,776 @@
+# Hey Emacs, this is a -*- makefile -*-
+#----------------------------------------------------------------------------
+# WinAVR Makefile Template written by Eric B. Weddington, J�rg Wunsch, et al.
+#  >> Modified for use with the LUFA project. <<
+#
+# Released to the Public Domain
+#
+# Additional material for this makefile was written by:
+# Peter Fleury
+# Tim Henigan
+# Colin O'Flynn
+# Reiner Patommel
+# Markus Pfaff
+# Sander Pool
+# Frederik Rouleau
+# Carlos Lamas
+# Dean Camera
+# Opendous Inc.
+# Denver Gingerich
+#
+#----------------------------------------------------------------------------
+# On command line:
+#
+# make all = Make software.
+#
+# make clean = Clean out built project files.
+#
+# make coff = Convert ELF to AVR COFF.
+#
+# make extcoff = Convert ELF to AVR Extended COFF.
+#
+# make program = Download the hex file to the device, using avrdude.
+#                Please customize the avrdude settings below first!
+#
+# make dfu = Download the hex file to the device, using dfu-programmer (must
+#            have dfu-programmer installed).
+#
+# make flip = Download the hex file to the device, using Atmel FLIP (must
+#             have Atmel FLIP installed).
+#
+# make dfu-ee = Download the eeprom file to the device, using dfu-programmer
+#               (must have dfu-programmer installed).
+#
+# make flip-ee = Download the eeprom file to the device, using Atmel FLIP
+#                (must have Atmel FLIP installed).
+#
+# make doxygen = Generate DoxyGen documentation for the project (must have
+#                DoxyGen installed)
+#
+# make debug = Start either simulavr or avarice as specified for debugging, 
+#              with avr-gdb or avr-insight as the front end for debugging.
+#
+# make filename.s = Just compile filename.c into the assembler code only.
+#
+# make filename.i = Create a preprocessed source file for use in submitting
+#                   bug reports to the GCC project.
+#
+# To rebuild project do "make clean" then "make all".
+#----------------------------------------------------------------------------
+
+# MCU name(s)
+# 	Since the ATMEGA8U2 part is not directly supported by the current
+#	versions of either avrdude or dfu-programmer, we specify a dummy
+#	part; AT90USB82 which is close enough in memory size and organization
+MCU = atmega8u2
+MCU_AVRDUDE = at90usb82
+MCU_DFU = at90usb82
+
+# Specify the Arduino model using the assigned PID.  This is used by Descriptors.c
+#   to set PID and product descriptor string
+# Uno PID:
+ARDUINO_MODEL_PID = 0x0001
+# Mega 2560 PID:
+#ARDUINO_MODEL_PID = 0x0010
+
+
+# Target board (see library "Board Types" documentation, NONE for projects not requiring
+# LUFA board drivers). If USER is selected, put custom board drivers in a directory called 
+# "Board" inside the application directory.
+BOARD  = USER
+
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the 
+#     processor frequency in Hz. You can then use this symbol in your source code to 
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_CLOCK below, as it is sourced by
+#     F_CLOCK after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
+
+# Input clock frequency.
+#     This will define a symbol, F_CLOCK, in all source code files equal to the 
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_CLOCK = $(F_CPU)
+
+
+# Output format. (can be srec, ihex, binary)
+FORMAT = ihex
+
+
+# Target file name (without extension).
+TARGET = Arduino-usbserial
+
+
+# Object files directory
+#     To put object files in current directory, use a dot (.), do NOT make
+#     this an empty or blank macro!
+OBJDIR = .
+
+
+# Path to the LUFA library
+LUFA_PATH = ../..
+
+
+# LUFA library compile-time options
+LUFA_OPTS  = -D USB_DEVICE_ONLY
+LUFA_OPTS += -D FIXED_CONTROL_ENDPOINT_SIZE=8
+LUFA_OPTS += -D FIXED_NUM_CONFIGURATIONS=1
+LUFA_OPTS += -D USE_FLASH_DESCRIPTORS
+LUFA_OPTS += -D INTERRUPT_CONTROL_ENDPOINT
+LUFA_OPTS += -D DEVICE_STATE_AS_GPIOR=0
+LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
+
+
+# Create the LUFA source path variables by including the LUFA root makefile
+include $(LUFA_PATH)/LUFA/makefile
+
+
+# List C source files here. (C dependencies are automatically generated.)
+SRC = $(TARGET).c                                                 \
+	  Descriptors.c                                               \
+	  $(LUFA_SRC_USB)                                             \
+	  $(LUFA_SRC_USBCLASS)										  \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Device.c			  \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Endpoint.c           \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/HostStandardReq.c	  \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Host.c               \
+ 	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Pipe.c               \
+ 	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/USBController.c      \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/Events.c            \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/USBInterrupt.c       \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/USBTask.c           \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/DeviceStandardReq.c \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.c  \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/Class/Device/CDC.c            \
+	  $(LUFA_PATH)/LUFA/Drivers/USB/Class/Host/CDC.c              
+
+
+# List C++ source files here. (C dependencies are automatically generated.)
+CPPSRC = 
+
+
+# List Assembler source files here.
+#     Make them always end in a capital .S.  Files ending in a lowercase .s
+#     will not be considered source files but generated files (assembler
+#     output from the compiler), and will be deleted upon "make clean"!
+#     Even though the DOS/Win* filesystem matches both .s and .S the same,
+#     it will preserve the spelling of the filenames, and gcc itself does
+#     care about how the name is spelled on its command-line.
+ASRC =
+
+
+# Optimization level, can be [0, 1, 2, 3, s]. 
+#     0 = turn off optimization. s = optimize for size.
+#     (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
+OPT = s
+
+
+# Debugging format.
+#     Native formats for AVR-GCC's -g are dwarf-2 [default] or stabs.
+#     AVR Studio 4.10 requires dwarf-2.
+#     AVR [Extended] COFF format requires stabs, plus an avr-objcopy run.
+DEBUG = dwarf-2
+
+
+# List any extra directories to look for include files here.
+#     Each directory must be seperated by a space.
+#     Use forward slashes for directory separators.
+#     For a directory that has spaces, enclose it in quotes.
+EXTRAINCDIRS = $(LUFA_PATH)/
+
+
+# Compiler flag to set the C Standard level.
+#     c89   = "ANSI" C
+#     gnu89 = c89 plus GCC extensions
+#     c99   = ISO C99 standard (not yet fully implemented)
+#     gnu99 = c99 plus GCC extensions
+CSTANDARD = -std=gnu99
+
+
+# Place -D or -U options here for C sources
+CDEFS  = -DF_CPU=$(F_CPU)UL 
+CDEFS += -DF_CLOCK=$(F_CLOCK)UL 
+CDEFS += -DARDUINO_MODEL_PID=$(ARDUINO_MODEL_PID)
+CDEFS += -DBOARD=BOARD_$(BOARD) 
+CDEFS += $(LUFA_OPTS)
+CDEFS += -DAVR_RESET_LINE_PORT="PORTD"
+CDEFS += -DAVR_RESET_LINE_DDR="DDRD"
+CDEFS += -DAVR_RESET_LINE_MASK="(1 << 7)"
+CDEFS += -DTX_RX_LED_PULSE_MS=3
+CDEFS += -DPING_PONG_LED_PULSE_MS=100
+
+# Place -D or -U options here for ASM sources
+ADEFS  = -DF_CPU=$(F_CPU)
+ADEFS += -DF_CLOCK=$(F_CLOCK)UL
+ADEFS += -DBOARD=BOARD_$(BOARD)
+ADEFS += $(LUFA_OPTS)
+
+# Place -D or -U options here for C++ sources
+CPPDEFS  = -DF_CPU=$(F_CPU)UL
+CPPDEFS += -DF_CLOCK=$(F_CLOCK)UL
+CPPDEFS += -DBOARD=BOARD_$(BOARD)
+CPPDEFS += $(LUFA_OPTS)
+#CPPDEFS += -D__STDC_LIMIT_MACROS
+#CPPDEFS += -D__STDC_CONSTANT_MACROS
+
+
+
+#---------------- Compiler Options C ----------------
+#  -g*:          generate debugging information
+#  -O*:          optimization level
+#  -f...:        tuning, see GCC manual and avr-libc documentation
+#  -Wall...:     warning level
+#  -Wa,...:      tell GCC to pass this to the assembler.
+#    -adhlns...: create assembler listing
+CFLAGS = -g$(DEBUG)
+CFLAGS += $(CDEFS)
+CFLAGS += -O$(OPT)
+CFLAGS += -funsigned-char
+CFLAGS += -funsigned-bitfields
+CFLAGS += -ffunction-sections
+CFLAGS += -fno-inline-small-functions
+CFLAGS += -fpack-struct
+CFLAGS += -fshort-enums
+CFLAGS += -fno-strict-aliasing
+CFLAGS += -Wall
+CFLAGS += -Wstrict-prototypes
+#CFLAGS += -mshort-calls
+#CFLAGS += -fno-unit-at-a-time
+#CFLAGS += -Wundef
+#CFLAGS += -Wunreachable-code
+#CFLAGS += -Wsign-compare
+CFLAGS += -Wa,-adhlns=$(<:%.c=$(OBJDIR)/%.lst)
+CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
+CFLAGS += $(CSTANDARD)
+
+
+#---------------- Compiler Options C++ ----------------
+#  -g*:          generate debugging information
+#  -O*:          optimization level
+#  -f...:        tuning, see GCC manual and avr-libc documentation
+#  -Wall...:     warning level
+#  -Wa,...:      tell GCC to pass this to the assembler.
+#    -adhlns...: create assembler listing
+CPPFLAGS = -g$(DEBUG)
+CPPFLAGS += $(CPPDEFS)
+CPPFLAGS += -O$(OPT)
+CPPFLAGS += -funsigned-char
+CPPFLAGS += -funsigned-bitfields
+CPPFLAGS += -fpack-struct
+CPPFLAGS += -fshort-enums
+CPPFLAGS += -fno-exceptions
+CPPFLAGS += -Wall
+CPPFLAGS += -Wundef
+CFLAGS += -Wundef
+#CPPFLAGS += -mshort-calls
+#CPPFLAGS += -fno-unit-at-a-time
+#CPPFLAGS += -Wstrict-prototypes
+#CPPFLAGS += -Wunreachable-code
+#CPPFLAGS += -Wsign-compare
+CPPFLAGS += -Wa,-adhlns=$(<:%.cpp=$(OBJDIR)/%.lst)
+CPPFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
+#CPPFLAGS += $(CSTANDARD)
+
+
+#---------------- Assembler Options ----------------
+#  -Wa,...:   tell GCC to pass this to the assembler.
+#  -adhlns:   create listing
+#  -gstabs:   have the assembler create line number information; note that
+#             for use in COFF files, additional information about filenames
+#             and function names needs to be present in the assembler source
+#             files -- see avr-libc docs [FIXME: not yet described there]
+#  -listing-cont-lines: Sets the maximum number of continuation lines of hex 
+#       dump that will be displayed for a given single line of source input.
+ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:%.S=$(OBJDIR)/%.lst),-gstabs,--listing-cont-lines=100
+
+
+#---------------- Library Options ----------------
+# Minimalistic printf version
+PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
+
+# Floating point printf version (requires MATH_LIB = -lm below)
+PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
+
+# If this is left blank, then it will use the Standard printf version.
+PRINTF_LIB = 
+#PRINTF_LIB = $(PRINTF_LIB_MIN)
+#PRINTF_LIB = $(PRINTF_LIB_FLOAT)
+
+
+# Minimalistic scanf version
+SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
+
+# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
+SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
+
+# If this is left blank, then it will use the Standard scanf version.
+SCANF_LIB = 
+#SCANF_LIB = $(SCANF_LIB_MIN)
+#SCANF_LIB = $(SCANF_LIB_FLOAT)
+
+
+MATH_LIB = -lm
+
+
+# List any extra directories to look for libraries here.
+#     Each directory must be seperated by a space.
+#     Use forward slashes for directory separators.
+#     For a directory that has spaces, enclose it in quotes.
+EXTRALIBDIRS = 
+
+
+
+#---------------- External Memory Options ----------------
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# used for variables (.data/.bss) and heap (malloc()).
+#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# only used for heap (malloc()).
+#EXTMEMOPTS = -Wl,--section-start,.data=0x801100,--defsym=__heap_end=0x80ffff
+
+EXTMEMOPTS =
+
+
+
+#---------------- Linker Options ----------------
+#  -Wl,...:     tell GCC to pass this to linker.
+#    -Map:      create map file
+#    --cref:    add cross reference to  map file
+LDFLAGS  = -Wl,-Map=$(TARGET).map,--cref
+LDFLAGS += -Wl,--relax 
+LDFLAGS += -Wl,--gc-sections
+LDFLAGS += $(EXTMEMOPTS)
+LDFLAGS += $(patsubst %,-L%,$(EXTRALIBDIRS))
+LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
+#LDFLAGS += -T linker_script.x
+
+
+
+#---------------- Programming Options (avrdude) ----------------
+
+# Programming hardware
+# Type: avrdude -c ?
+# to get a full listing.
+#
+AVRDUDE_PROGRAMMER = avrispmkii
+
+# com1 = serial port. Use lpt1 to connect to parallel port.
+AVRDUDE_PORT = usb
+
+AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
+#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
+
+
+# Uncomment the following if you want avrdude's erase cycle counter.
+# Note that this counter needs to be initialized first using -Yn,
+# see avrdude manual.
+#AVRDUDE_ERASE_COUNTER = -y
+
+# Uncomment the following if you do /not/ wish a verification to be
+# performed after programming the device.
+#AVRDUDE_NO_VERIFY = -V
+
+# Increase verbosity level.  Please use this when submitting bug
+# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude> 
+# to submit bug reports.
+#AVRDUDE_VERBOSE = -v -v
+
+AVRDUDE_FORCE = -F
+
+AVRDUDE_FLAGS = -p $(MCU_AVRDUDE) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
+AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)
+AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)
+AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
+AVRDUDE_FLAGS += $(AVRDUDE_FORCE)
+
+
+
+#---------------- Debugging Options ----------------
+
+# For simulavr only - target MCU frequency.
+DEBUG_MFREQ = $(F_CPU)
+
+# Set the DEBUG_UI to either gdb or insight.
+# DEBUG_UI = gdb
+DEBUG_UI = insight
+
+# Set the debugging back-end to either avarice, simulavr.
+DEBUG_BACKEND = avarice
+#DEBUG_BACKEND = simulavr
+
+# GDB Init Filename.
+GDBINIT_FILE = __avr_gdbinit
+
+# When using avarice settings for the JTAG
+JTAG_DEV = /dev/com1
+
+# Debugging port used to communicate between GDB / avarice / simulavr.
+DEBUG_PORT = 4242
+
+# Debugging host used to communicate between GDB / avarice / simulavr, normally
+#     just set to localhost unless doing some sort of crazy debugging when 
+#     avarice is running on a different computer.
+DEBUG_HOST = localhost
+
+
+
+#============================================================================
+
+
+# Define programs and commands.
+SHELL = sh
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+SIZE = avr-size
+AR = avr-ar rcs
+NM = avr-nm
+AVRDUDE = avrdude
+REMOVE = rm -f
+REMOVEDIR = rm -rf
+COPY = cp
+WINSHELL = cmd
+
+# Define Messages
+# English
+MSG_ERRORS_NONE = Errors: none
+MSG_BEGIN = -------- begin --------
+MSG_END = --------  end  --------
+MSG_SIZE_BEFORE = Size before: 
+MSG_SIZE_AFTER = Size after:
+MSG_COFF = Converting to AVR COFF:
+MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
+MSG_FLASH = Creating load file for Flash:
+MSG_EEPROM = Creating load file for EEPROM:
+MSG_EXTENDED_LISTING = Creating Extended Listing:
+MSG_SYMBOL_TABLE = Creating Symbol Table:
+MSG_LINKING = Linking:
+MSG_COMPILING = Compiling C:
+MSG_COMPILING_CPP = Compiling C++:
+MSG_ASSEMBLING = Assembling:
+MSG_CLEANING = Cleaning project:
+MSG_CREATING_LIBRARY = Creating library:
+
+
+
+
+# Define all object files.
+OBJ = $(SRC:%.c=$(OBJDIR)/%.o) $(CPPSRC:%.cpp=$(OBJDIR)/%.o) $(ASRC:%.S=$(OBJDIR)/%.o) 
+
+# Define all listing files.
+LST = $(SRC:%.c=$(OBJDIR)/%.lst) $(CPPSRC:%.cpp=$(OBJDIR)/%.lst) $(ASRC:%.S=$(OBJDIR)/%.lst) 
+
+
+# Compiler flags to generate dependency files.
+GENDEPFLAGS = -MMD -MP -MF .dep/$(@F).d
+
+
+# Combine all necessary flags and optional flags.
+# Add target processor to flags.
+ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS)
+ALL_CPPFLAGS = -mmcu=$(MCU) -I. -x c++ $(CPPFLAGS) $(GENDEPFLAGS)
+ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
+
+
+
+
+
+# Default target.
+#all: begin gccversion sizebefore build checkinvalidevents showliboptions showtarget sizeafter end
+all: begin gccversion sizebefore build showliboptions showtarget sizeafter end
+
+# Change the build target to build a HEX file or a library.
+build: elf hex eep lss sym asm
+#build: lib
+
+
+elf: $(TARGET).elf
+hex: $(TARGET).hex
+eep: $(TARGET).eep
+lss: $(TARGET).lss
+sym: $(TARGET).sym
+asm: $(TARGET).s
+LIBNAME=lib$(TARGET).a
+lib: $(LIBNAME)
+
+
+
+# Eye candy.
+# AVR Studio 3.x does not check make's exit code but relies on
+# the following magic strings to be generated by the compile job.
+begin:
+	@echo
+	@echo $(MSG_BEGIN)
+
+end:
+	@echo $(MSG_END)
+	@echo
+
+
+# Display size of file.
+HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
+ELFSIZE = $(SIZE) $(MCU_FLAG) $(FORMAT_FLAG) $(TARGET).elf
+MCU_FLAG = $(shell $(SIZE) --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
+FORMAT_FLAG = $(shell $(SIZE) --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
+
+sizebefore:
+	@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); \
+	2>/dev/null; echo; fi
+
+sizeafter:
+	@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); \
+	2>/dev/null; echo; fi
+
+#$(LUFA_PATH)/LUFA/LUFA_Events.lst:
+#	@make -C $(LUFA_PATH)/LUFA/ LUFA_Events.lst
+
+#checkinvalidevents: $(LUFA_PATH)/LUFA/LUFA_Events.lst
+#	@echo
+#	@echo Checking for invalid events...
+#	@$(shell) avr-nm $(OBJ) | sed -n -e 's/^.*EVENT_/EVENT_/p' | \
+#	                 grep -F -v --file=$(LUFA_PATH)/LUFA/LUFA_Events.lst > InvalidEvents.tmp || true
+#	@sed -n -e 's/^/  WARNING - INVALID EVENT NAME: /p' InvalidEvents.tmp
+#	@if test -s InvalidEvents.tmp; then exit 1; fi
+	
+showliboptions:
+	@echo
+	@echo ---- Compile Time Library Options ----
+	@for i in $(LUFA_OPTS:-D%=%); do \
+		echo $$i; \
+	done
+	@echo --------------------------------------
+
+showtarget:
+	@echo
+	@echo --------- Target Information ---------
+	@echo AVR Model: $(MCU)
+	@echo Board:     $(BOARD)
+	@echo Clock:     $(F_CPU)Hz CPU, $(F_CLOCK)Hz Master
+	@echo --------------------------------------
+	
+
+# Display compiler version information.
+gccversion : 
+	@$(CC) --version
+
+
+# Program the device.  
+program: $(TARGET).hex $(TARGET).eep
+	$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
+
+flip: $(TARGET).hex
+	batchisp -hardware usb -device $(MCU_DFU) -operation erase f
+	batchisp -hardware usb -device $(MCU_DFU) -operation loadbuffer $(TARGET).hex program
+	batchisp -hardware usb -device $(MCU_DFU) -operation start reset 0
+
+dfu: $(TARGET).hex
+	dfu-programmer $(MCU_DFU) erase
+	dfu-programmer $(MCU_DFU) flash --debug 1 $(TARGET).hex
+	dfu-programmer $(MCU_DFU) reset
+
+
+flip-ee: $(TARGET).hex $(TARGET).eep
+	$(COPY) $(TARGET).eep $(TARGET)eep.hex
+	batchisp -hardware usb -device $(MCU_DFU) -operation memory EEPROM erase
+	batchisp -hardware usb -device $(MCU_DFU) -operation memory EEPROM loadbuffer $(TARGET)eep.hex program
+	batchisp -hardware usb -device $(MCU_DFU) -operation start reset 0
+	$(REMOVE) $(TARGET)eep.hex
+
+dfu-ee: $(TARGET).hex $(TARGET).eep
+	dfu-programmer $(MCU_DFU) flash-eeprom --debug 1 --suppress-bootloader-mem $(TARGET).eep
+	dfu-programmer $(MCU_DFU) reset
+
+
+# Generate avr-gdb config/init file which does the following:
+#     define the reset signal, load the target file, connect to target, and set 
+#     a breakpoint at main().
+gdb-config: 
+	@$(REMOVE) $(GDBINIT_FILE)
+	@echo define reset >> $(GDBINIT_FILE)
+	@echo SIGNAL SIGHUP >> $(GDBINIT_FILE)
+	@echo end >> $(GDBINIT_FILE)
+	@echo file $(TARGET).elf >> $(GDBINIT_FILE)
+	@echo target remote $(DEBUG_HOST):$(DEBUG_PORT)  >> $(GDBINIT_FILE)
+ifeq ($(DEBUG_BACKEND),simulavr)
+	@echo load  >> $(GDBINIT_FILE)
+endif
+	@echo break main >> $(GDBINIT_FILE)
+
+debug: gdb-config $(TARGET).elf
+ifeq ($(DEBUG_BACKEND), avarice)
+	@echo Starting AVaRICE - Press enter when "waiting to connect" message displays.
+	@$(WINSHELL) /c start avarice --jtag $(JTAG_DEV) --erase --program --file \
+	$(TARGET).elf $(DEBUG_HOST):$(DEBUG_PORT)
+	@$(WINSHELL) /c pause
+
+else
+	@$(WINSHELL) /c start simulavr --gdbserver --device $(MCU) --clock-freq \
+	$(DEBUG_MFREQ) --port $(DEBUG_PORT)
+endif
+	@$(WINSHELL) /c start avr-$(DEBUG_UI) --command=$(GDBINIT_FILE)
+
+
+
+
+# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.
+COFFCONVERT = $(OBJCOPY) --debugging
+COFFCONVERT += --change-section-address .data-0x800000
+COFFCONVERT += --change-section-address .bss-0x800000
+COFFCONVERT += --change-section-address .noinit-0x800000
+COFFCONVERT += --change-section-address .eeprom-0x810000
+
+
+
+coff: $(TARGET).elf
+	@echo
+	@echo $(MSG_COFF) $(TARGET).cof
+	$(COFFCONVERT) -O coff-avr $< $(TARGET).cof
+
+
+extcoff: $(TARGET).elf
+	@echo
+	@echo $(MSG_EXTENDED_COFF) $(TARGET).cof
+	$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof
+
+
+
+# Create final output files (.hex, .eep) from ELF output file.
+%.hex: %.elf
+	@echo
+	@echo $(MSG_FLASH) $@
+	$(OBJCOPY) -O $(FORMAT) -R .eeprom -R .fuse -R .lock $< $@
+
+%.eep: %.elf
+	@echo
+	@echo $(MSG_EEPROM) $@
+	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
+	--change-section-lma .eeprom=0 --no-change-warnings -O $(FORMAT) $< $@ || exit 0
+
+# Create extended listing file from ELF output file.
+%.lss: %.elf
+	@echo
+	@echo $(MSG_EXTENDED_LISTING) $@
+	$(OBJDUMP) -h -S -z $< > $@
+
+# Create a symbol table from ELF output file.
+%.sym: %.elf
+	@echo
+	@echo $(MSG_SYMBOL_TABLE) $@
+	$(NM) -n $< > $@
+
+
+
+# Create library from object files.
+.SECONDARY : $(TARGET).a
+.PRECIOUS : $(OBJ)
+%.a: $(OBJ)
+	@echo
+	@echo $(MSG_CREATING_LIBRARY) $@
+	$(AR) $@ $(OBJ)
+
+
+# Link: create ELF output file from object files.
+.SECONDARY : $(TARGET).elf
+.PRECIOUS : $(OBJ)
+%.elf: $(OBJ)
+	@echo
+	@echo $(MSG_LINKING) $@
+	$(CC) $(ALL_CFLAGS) $^ --output $@ $(LDFLAGS)
+
+
+# Compile: create object files from C source files.
+$(OBJDIR)/%.o : %.c
+	@echo
+	@echo $(MSG_COMPILING) $<
+	$(CC) -c $(ALL_CFLAGS) $< -o $@ 
+
+
+# Compile: create object files from C++ source files.
+$(OBJDIR)/%.o : %.cpp
+	@echo
+	@echo $(MSG_COMPILING_CPP) $<
+	$(CC) -c $(ALL_CPPFLAGS) $< -o $@ 
+
+
+# Compile: create assembler files from C source files.
+%.s : %.c
+	$(CC) -S $(ALL_CFLAGS) $< -o $@
+
+
+# Compile: create assembler files from C++ source files.
+%.s : %.cpp
+	$(CC) -S $(ALL_CPPFLAGS) $< -o $@
+
+
+# Assemble: create object files from assembler source files.
+$(OBJDIR)/%.o : %.S
+	@echo
+	@echo $(MSG_ASSEMBLING) $<
+	$(CC) -c $(ALL_ASFLAGS) $< -o $@
+
+
+# Create preprocessed source for use in sending a bug report.
+%.i : %.c
+	$(CC) -E -mmcu=$(MCU) -I. $(CFLAGS) $< -o $@ 
+	
+
+# Target: clean project.
+clean: begin clean_list clean_binary end
+
+clean_binary:
+	$(REMOVE) $(TARGET).hex
+	
+clean_list:
+	@echo $(MSG_CLEANING)
+	$(REMOVE) $(TARGET).hex
+	$(REMOVE) $(TARGET).eep
+	$(REMOVE) $(TARGET).cof
+	$(REMOVE) $(TARGET).elf
+	$(REMOVE) $(TARGET).map
+	$(REMOVE) $(TARGET).sym
+	$(REMOVE) $(TARGET).lss
+	$(REMOVE) $(SRC:%.c=$(OBJDIR)/%.o)
+	$(REMOVE) $(SRC:%.c=$(OBJDIR)/%.lst)
+	$(REMOVE) $(SRC:.c=.s)
+	$(REMOVE) $(SRC:.c=.d)
+	$(REMOVE) $(SRC:.c=.i)
+	$(REMOVEDIR) .dep
+
+doxygen:
+	@echo Generating Project Documentation...
+	@doxygen Doxygen.conf
+	@echo Documentation Generation Complete.
+
+clean_doxygen:
+	rm -rf Documentation
+
+# Create object files directory
+$(shell mkdir $(OBJDIR) 2>/dev/null)
+
+
+# Include the dependency files.
+-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
+
+
+# Listing of phony targets.
+.PHONY : all begin finish end sizebefore sizeafter gccversion \
+build elf hex eep lss sym coff extcoff doxygen clean          \
+clean_list clean_doxygen program dfu flip flip-ee dfu-ee      \
+debug gdb-config
diff --git a/firmwares/atmegaxxu2/arduino-usbserial/readme.txt b/firmwares/atmegaxxu2/arduino-usbserial/readme.txt
new file mode 100644
index 0000000..289326b
--- /dev/null
+++ b/firmwares/atmegaxxu2/arduino-usbserial/readme.txt
@@ -0,0 +1,13 @@
+To setup the project and upload the Arduino usbserial application firmware to an ATMEGA8U2 using the Arduino USB DFU bootloader:
+1. unpack the source into LUFA's Projects directory
+2. set ARDUINO_MODEL_PID in the makefile as appropriate
+3. do "make clean; make"
+4. put the 8U2 into USB DFU mode:
+4.a. assert and hold the 8U2's RESET line
+4.b. assert and hold the 8U2's HWB line
+4.c. release the 8U2's RESET line
+4.d. release the 8U2's HWB line
+5. confirm that the board enumerates as either "Arduino Uno DFU" or "Arduino Mega 2560 DFU"
+6. do "make dfu" (OS X or Linux - dfu-programmer must be installed first) or "make flip" (Windows - Flip must be installed first)
+
+Check that the board enumerates as either "Arduino Uno" or "Arduino Mega 2560".  Test by uploading a new Arduino sketch from the Arduino IDE.
author	Cristian Maglie <c.maglie@bug.st>	2012-10-18 15:50:09 +0200
committer	Cristian Maglie <c.maglie@bug.st>	2012-10-18 15:50:09 +0200
commit	6a45ba48ab1f2d0a168373a02ba7fded40a3470e (patch)
tree	163448869b4dfcbce95dc877ffff61a709fba6b6 /firmwares/atmegaxxu2
parent	c313b54c00635f1be14a1b09617dc9b8b562e589 (diff)
parent	6d296e0faba5b9910084c307a3f93cb2653bf7f8 (diff)