USB_Init() no longer calls sei() to enable global interrupts - this must now be done in the user application once all init code has run.

Bootloaders/CDC/BootloaderCDC.c

@@ -69,6 +69,9 @@ int main(void)
 	/* Setup hardware required for the bootloader */
 	SetupHardware();
 
+	/* Enable global interrupts so that the USB stack can function */
+	sei();
+
 	while (RunBootloader)
 	{
 		CDC_Task();

Bootloaders/CDC/BootloaderCDC.h

@@ -42,6 +42,7 @@
 		#include <avr/boot.h>
 		#include <avr/eeprom.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 
 		#include "Descriptors.h"

Bootloaders/DFU/BootloaderDFU.c

@@ -102,6 +102,9 @@ 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();

Bootloaders/DFU/BootloaderDFU.h

@@ -43,6 +43,7 @@
 		#include <avr/pgmspace.h>
 		#include <avr/eeprom.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 	
 		#include "Descriptors.h"

Bootloaders/Incomplete/MIDI/BootloaderMIDI.c

@@ -43,8 +43,6 @@ int main(void)
 {
 	SetupHardware();
 
-	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
-
 	for (;;)
 	{
 		MIDI_Task();
@@ -63,48 +61,22 @@ void SetupHardware(void)
 	clock_prescale_set(clock_div_1);
 	
 	/* Hardware Initialization */
-	LEDs_Init();
 	USB_Init();
 }
 
-/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs. */
-void EVENT_USB_Device_Connect(void)
-{
-	/* Indicate USB enumerating */
-	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
-}
-
-/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
- *  the status LEDs, disables the sample update and PWM output timers and stops the USB and MIDI management tasks.
- */
-void EVENT_USB_Device_Disconnect(void)
-{
-	/* Indicate USB not ready */
-	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
-}
-
 /** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration
  *  of the USB device after enumeration - the device endpoints are configured and the MIDI management task started.
  */
 void EVENT_USB_Device_ConfigurationChanged(void)
 {
-	/* Indicate USB connected and ready */
-	LEDs_SetAllLEDs(LEDMASK_USB_READY);
-
 	/* Setup MIDI stream endpoints */
-	if (!(Endpoint_ConfigureEndpoint(MIDI_STREAM_OUT_EPNUM, EP_TYPE_BULK,
+	Endpoint_ConfigureEndpoint(MIDI_STREAM_OUT_EPNUM, EP_TYPE_BULK,
 	                           ENDPOINT_DIR_OUT, MIDI_STREAM_EPSIZE,
-	                                 ENDPOINT_BANK_SINGLE)))
+	                           ENDPOINT_BANK_SINGLE);
-	{
-		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
-	}	
 	
-	if (!(Endpoint_ConfigureEndpoint(MIDI_STREAM_IN_EPNUM, EP_TYPE_BULK,
+	Endpoint_ConfigureEndpoint(MIDI_STREAM_IN_EPNUM, EP_TYPE_BULK,
 	                           ENDPOINT_DIR_IN, MIDI_STREAM_EPSIZE,
-	                                 ENDPOINT_BANK_SINGLE)))
+	                           ENDPOINT_BANK_SINGLE);
-	{
-		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
-	}
 }
 
 /** Task to handle the generation of MIDI note change events in response to presses of the board joystick, and send them
@@ -123,8 +95,6 @@ void MIDI_Task(void)
 	{
 		USB_MIDI_EventPacket_t InPacket;
 		Endpoint_Read_Stream_LE(&InPacket, sizeof(InPacket));			
-			
-		LEDs_SetAllLEDs(InPacket.Data2 > 64 ? LEDS_LED1 : LEDS_LED2);	
 		Endpoint_ClearOUT();
 
 		uint8_t Channel = InPacket.Data1;

Bootloaders/Incomplete/MIDI/BootloaderMIDI.h

@@ -41,12 +41,12 @@
 		#include <avr/wdt.h>
 		#include <avr/boot.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 
 		#include "Descriptors.h"
 				
 		#include <LUFA/Version.h>
-		#include <LUFA/Drivers/Board/LEDs.h>
 		#include <LUFA/Drivers/USB/USB.h>
 
    /* Macros: */

Bootloaders/TeensyHID/TeensyHID.c

@@ -49,6 +49,9 @@ int main(void)
 	/* Setup hardware required for the bootloader */
 	SetupHardware();
 	
+	/* Enable global interrupts so that the USB stack can function */
+	sei();
+
 	while (RunBootloader)
 	  USB_USBTask();
 	

Bootloaders/TeensyHID/TeensyHID.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/boot.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 
 		#include "Descriptors.h"

Demos/Device/ClassDriver/AudioInput/AudioInput.c

@@ -59,6 +59,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/ClassDriver/AudioInput/AudioInput.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 
 		#include <LUFA/Version.h>
 		#include <LUFA/Drivers/Board/LEDs.h>

Demos/Device/ClassDriver/AudioOutput/AudioOutput.c

@@ -59,6 +59,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/ClassDriver/AudioOutput/AudioOutput.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdlib.h>
 
 		#include "Descriptors.h"

Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.c

@@ -94,6 +94,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
 
 		#include "Descriptors.h"

Demos/Device/ClassDriver/GenericHID/GenericHID.c

@@ -74,6 +74,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/ClassDriver/GenericHID/GenericHID.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
 		
 		#include "Descriptors.h"

Demos/Device/ClassDriver/Joystick/Joystick.c

@@ -66,6 +66,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/ClassDriver/Joystick/Joystick.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
 
 		#include "Descriptors.h"

Demos/Device/ClassDriver/Keyboard/Keyboard.c

@@ -66,6 +66,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/ClassDriver/Keyboard/Keyboard.h

@@ -40,8 +40,8 @@
 	/* Includes: */
 		#include <avr/io.h>
 		#include <avr/wdt.h>
-		#include <avr/interrupt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 		#include <string.h>
 

Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.c

@@ -89,6 +89,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.h

@@ -36,6 +36,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 		#include <string.h>
 

Demos/Device/ClassDriver/MIDI/MIDI.c

@@ -64,6 +64,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/ClassDriver/MIDI/MIDI.h

@@ -40,7 +40,9 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
+		#include <string.h>
 
 		#include "Descriptors.h"
 				

Demos/Device/ClassDriver/MassStorage/MassStorage.c

@@ -66,6 +66,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/ClassDriver/MassStorage/MassStorage.h

@@ -40,6 +40,8 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
+		#include <string.h>
 
 		#include "Descriptors.h"
 

Demos/Device/ClassDriver/MassStorageKeyboard/MassStorageKeyboard.c

@@ -89,6 +89,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/ClassDriver/MassStorageKeyboard/MassStorageKeyboard.h

@@ -42,6 +42,7 @@
 		#include <avr/wdt.h>
 		#include <avr/power.h>
 		#include <avr/interrupt.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 		#include <string.h>
 

Demos/Device/ClassDriver/Mouse/Mouse.c

@@ -66,6 +66,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/ClassDriver/Mouse/Mouse.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/interrupt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 		#include <string.h>
 		

Demos/Device/ClassDriver/RNDISEthernet/Lib/ProtocolDecoders.h

@@ -38,6 +38,8 @@
 
 	/* Includes: */
 		#include <avr/io.h>
+		#include <avr/pgmspace.h>
+		#include <stdio.h>
 		
 		#include <LUFA/Drivers/USB/Class/RNDIS.h>
 		#include <LUFA/Drivers/Peripheral/SerialStream.h>

Demos/Device/ClassDriver/RNDISEthernet/RNDISEthernet.c

@@ -70,12 +70,11 @@ int main(void)
 {
 	SetupHardware();
 
-	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
-	
 	TCP_Init();
 	Webserver_Init();
 
-	printf_P(PSTR("\r\n\r\n****** RNDIS Demo running. ******\r\n"));
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/ClassDriver/RNDISEthernet/RNDISEthernet.h

@@ -39,10 +39,9 @@
 	/* Includes: */
 		#include <avr/io.h>
 		#include <avr/wdt.h>
-		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
-		#include <stdio.h>
 
 		#include "Descriptors.h"
 

Demos/Device/ClassDriver/VirtualSerial/VirtualSerial.c

@@ -76,6 +76,7 @@ int main(void)
 	CDC_Device_CreateStream(&VirtualSerial_CDC_Interface, &USBSerialStream);
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/ClassDriver/VirtualSerial/VirtualSerial.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
 		#include <stdio.h>
 

Demos/Device/ClassDriver/VirtualSerialMouse/VirtualSerialMouse.c

@@ -90,6 +90,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/ClassDriver/VirtualSerialMouse/VirtualSerialMouse.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
 
 		#include "Descriptors.h"

Demos/Device/Incomplete/Sideshow/Sideshow.c

@@ -58,6 +58,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/Incomplete/Sideshow/Sideshow.h

@@ -35,6 +35,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 
 		#include "Descriptors.h"
 		#include "Lib/SideshowCommands.h"

Demos/Device/LowLevel/AudioInput/AudioInput.c

@@ -47,6 +47,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/LowLevel/AudioInput/AudioInput.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 
 		#include "Descriptors.h"
 				

Demos/Device/LowLevel/AudioOutput/AudioOutput.c

@@ -47,6 +47,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/LowLevel/AudioOutput/AudioOutput.h

@@ -40,7 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
-		#include <stdlib.h>
+		#include <avr/interrupt.h>
 
 		#include "Descriptors.h"
 		

Demos/Device/LowLevel/DualVirtualSerial/DualVirtualSerial.c

@@ -70,6 +70,9 @@ int main(void)
 {
 	SetupHardware();
 	
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
+
 	for (;;)
 	{
 		CDC1_Task();

Demos/Device/LowLevel/DualVirtualSerial/DualVirtualSerial.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
 
 		#include "Descriptors.h"

Demos/Device/LowLevel/GenericHID/GenericHID.c

@@ -48,6 +48,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/LowLevel/GenericHID/GenericHID.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 		#include <string.h>
 		

Demos/Device/LowLevel/Joystick/Joystick.c

@@ -44,6 +44,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/LowLevel/Joystick/Joystick.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
 
 		#include "Descriptors.h"

Demos/Device/LowLevel/Keyboard/Keyboard.c

@@ -62,6 +62,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/LowLevel/Keyboard/Keyboard.h

@@ -41,6 +41,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 		#include <string.h>
 

Demos/Device/LowLevel/KeyboardMouse/KeyboardMouse.c

@@ -52,6 +52,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/LowLevel/KeyboardMouse/KeyboardMouse.h

@@ -36,6 +36,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 		#include <string.h>
 

Demos/Device/LowLevel/MIDI/MIDI.c

@@ -44,6 +44,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/LowLevel/MIDI/MIDI.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 
 		#include "Descriptors.h"

Demos/Device/LowLevel/MassStorage/MassStorage.c

@@ -55,6 +55,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/LowLevel/MassStorage/MassStorage.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 
 		#include "Descriptors.h"
 

Demos/Device/LowLevel/Mouse/Mouse.c

@@ -61,6 +61,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/LowLevel/Mouse/Mouse.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 		#include <string.h>
 		

Demos/Device/LowLevel/RNDISEthernet/Lib/ProtocolDecoders.h

@@ -38,6 +38,8 @@
 
 	/* Includes: */
 		#include <avr/io.h>
+		#include <avr/pgmspace.h>
+		#include <stdio.h>
 		
 		#include <LUFA/Drivers/Peripheral/SerialStream.h>
 		

Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.c

@@ -47,9 +47,8 @@ int main(void)
 	TCP_Init();
 	Webserver_Init();
 
-	printf_P(PSTR("\r\n\r\n****** RNDIS Demo running. ******\r\n"));
-
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.h

@@ -39,10 +39,9 @@
 	/* Includes: */
 		#include <avr/io.h>
 		#include <avr/wdt.h>
-		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
-		#include <stdio.h>
 
 		#include "Descriptors.h"
 

Demos/Device/LowLevel/VirtualSerial/VirtualSerial.c

@@ -57,6 +57,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Device/LowLevel/VirtualSerial/VirtualSerial.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
 
 		#include "Descriptors.h"

Demos/DualRole/ClassDriver/MouseHostDevice/MouseHostDevice.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Mouse Host/Device Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/DualRole/ClassDriver/MouseHostDevice/MouseHostDevice.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/ClassDriver/JoystickHostWithParser/JoystickHostWithParser.c

@@ -70,6 +70,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Joystick Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/ClassDriver/JoystickHostWithParser/JoystickHostWithParser.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/ClassDriver/KeyboardHost/KeyboardHost.c

@@ -65,6 +65,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Keyboard Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Demos/Host/ClassDriver/KeyboardHost/KeyboardHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/ClassDriver/KeyboardHostWithParser/KeyboardHostWithParser.c

@@ -70,6 +70,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Keyboard Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/ClassDriver/KeyboardHostWithParser/KeyboardHostWithParser.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/ClassDriver/MIDIHost/MIDIHost.c

@@ -63,6 +63,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "MIDI Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/ClassDriver/MIDIHost/MIDIHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/ClassDriver/MassStorageHost/MassStorageHost.c

@@ -63,6 +63,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Mass Storage Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/ClassDriver/MassStorageHost/MassStorageHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <ctype.h>
 		#include <stdio.h>
 

Demos/Host/ClassDriver/MouseHost/MouseHost.c

@@ -65,6 +65,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Mouse Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/ClassDriver/MouseHost/MouseHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/ClassDriver/MouseHostWithParser/MouseHostWithParser.c

@@ -68,6 +68,7 @@ int main(void)
 	SetupHardware();
 
 	puts_P(PSTR(ESC_FG_CYAN "Mouse Host Demo running.\r\n" ESC_FG_WHITE));
+	sei();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 

Demos/Host/ClassDriver/MouseHostWithParser/MouseHostWithParser.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/ClassDriver/PrinterHost/PrinterHost.c

@@ -62,6 +62,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Printer Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/ClassDriver/PrinterHost/PrinterHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/ClassDriver/RNDISEthernetHost/RNDISEthernetHost.c

@@ -70,6 +70,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "RNDIS Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/ClassDriver/RNDISEthernetHost/RNDISEthernetHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/ClassDriver/StillImageHost/StillImageHost.c

@@ -65,6 +65,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Still Image Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/ClassDriver/StillImageHost/StillImageHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/ClassDriver/VirtualSerialHost/VirtualSerialHost.c

@@ -65,6 +65,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "CDC Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/ClassDriver/VirtualSerialHost/VirtualSerialHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/Incomplete/BluetoothHost/BluetoothHost.c

@@ -54,6 +54,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Bluetooth Host Demo running.\r\n" ESC_FG_WHITE));
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/Incomplete/BluetoothHost/BluetoothHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include "Lib/ServiceDiscoveryProtocol.h"

Demos/Host/LowLevel/GenericHIDHost/GenericHIDHost.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Generic HID Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Joystick HID Parser Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/LowLevel/KeyboardHost/KeyboardHost.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Keyboard HID Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/KeyboardHostWithParser/KeyboardHostWithParser.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Keyboard HID Parser Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/KeyboardHostWithParser/KeyboardHostWithParser.h

@@ -36,6 +36,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/LowLevel/MIDIHost/MIDIHost.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "MIDI Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/MIDIHost/MIDIHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/LowLevel/MassStorageHost/MassStorageHost.c

@@ -50,6 +50,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Mass Storage Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/MassStorageHost/MassStorageHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 		#include <ctype.h>
 		#include <string.h>

Demos/Host/LowLevel/MouseHost/MouseHost.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Mouse HID Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/MouseHostWithParser/MouseHostWithParser.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Mouse HID Parser Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/MouseHostWithParser/MouseHostWithParser.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/LowLevel/PrinterHost/PrinterHost.c

@@ -46,6 +46,7 @@ int main(void)
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 
 	puts_P(PSTR(ESC_FG_CYAN "Printer Host Demo running.\r\n" ESC_FG_WHITE));
+	sei();
 	
 	for (;;)
 	{

Demos/Host/LowLevel/PrinterHost/PrinterHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 		#include <string.h>
 

Demos/Host/LowLevel/RNDISEthernetHost/RNDISEthernetHost.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "RNDIS Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/RNDISEthernetHost/RNDISEthernetHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

Demos/Host/LowLevel/StillImageHost/StillImageHost.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "Still Image Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/StillImageHost/StillImageHost.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 		
 		#include "ConfigDescriptor.h"

Demos/Host/LowLevel/VirtualSerialHost/VirtualSerialHost.c

@@ -46,6 +46,7 @@ int main(void)
 	puts_P(PSTR(ESC_FG_CYAN "CDC Host Demo running.\r\n" ESC_FG_WHITE));
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Demos/Host/LowLevel/VirtualSerialHost/VirtualSerialHost.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include <LUFA/Version.h>

LUFA/Drivers/USB/LowLevel/LowLevel.c

@@ -103,8 +103,6 @@ void USB_Init(
 	#endif
 
 	USB_IsInitialized = true;
-
-	sei();
 }
 
 void USB_ShutDown(void)

LUFA/Drivers/USB/LowLevel/LowLevel.h

@@ -236,8 +236,12 @@
 			 *  allow for device connection to a host when in device mode, or for device enumeration while in
 			 *  host mode.
 			 *
-			 *  As the USB library relies on USB interrupts for some of its functionality, this routine will
+			 *  As the USB library relies on interrupts for the device and host mode enumeration processes,
-			 *  enable global interrupts.
+			 *  the user must enable global interrupts before or shortly after this function is called. In
+			 *  device mode, interrupts must be enabled within 500ms of this function being called to ensure
+			 *  that the host does not time out whilst enumerating the device. In host mode, interrupts may be
+			 *  enabled at the application's leisure however enumeration will not begin of an attached device
+			 *  until after this has occurred.
 			 *
 			 *  Calling this function when the USB interface is already initialized will cause a complete USB
 			 *  interface reset and re-enumeration.

LUFA/ManPages/ChangeLog.txt

@@ -28,6 +28,7 @@
   *  - Added LIBUSB_FILTERDRV_COMPAT compile time option to the AVRISP programmer project to make the code compatible with Windows
   *    builds of avrdude at the expense of AVRStudio compatibility
   *  - Removed two-step endpoint/pipe bank clear and switch sequence for smaller, faster endpoint/pipe code
+  *  - The USB_Init() function no longer calls sei() - the user is now responsible for enabling interrupts when they are ready
   *
   *  <b>Fixed:</b>
   *  - Fixed software PDI/TPI programming mode in the AVRISP project not correctly toggling just the clock pin

LUFA/ManPages/MigrationInformation.txt

@@ -16,6 +16,18 @@
  *    - The \ref TWI_StartTransmission() function now takes in a timeout period, expressed in milliseconds, within which the addressed
  *      device must respond or the function will abort.
  *
+ *  <b>Device Mode</b>
+ *    - The \ref USB_Init() function no longer calls sei() to enable global interrupts, as the user application may need
+ *      to perform other initialization before it is ready to handle global interrupts. The user application is now responsible
+ *      for enabling global interrupts before or shortly after calling \ref USB_Init() to ensure that the enumeration process
+ *      functions correctly.
+ *
+ *  <b>Host Mode</b>
+ *    - The \ref USB_Init() function no longer calls sei() to enable global interrupts, as the user application may need
+ *      to perform other initialization before it is ready to handle global interrupts. The user application is now responsible
+ *      for enabling global interrupts before or shortly after calling \ref USB_Init() to ensure that the enumeration process
+ *      functions correctly.
+ *
  * \section Sec_Migration100219 Migrating from 091223 to 100219
  *
  *  <b>Non-USB Library Components</b>

Projects/AVRISP-MKII/AVRISP.c

@@ -44,6 +44,7 @@ int main(void)
 	SetupHardware();
 	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Projects/Benito/Benito.c

@@ -84,6 +84,8 @@ int main(void)
 	
 	Buffer_Initialize(&Tx_Buffer);
 	
+	sei();
+
 	for (;;)
 	{
 		/* Echo bytes from the host to the target via the hardware USART */

Projects/Incomplete/MIDIToneGenerator/MIDIToneGenerator.c

@@ -88,6 +88,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 	
 	for (;;)
 	{

Projects/Incomplete/MIDIToneGenerator/MIDIToneGenerator.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/power.h>
 		#include <avr/pgmspace.h>
+		#include <avr/interrupt.h>
 		#include <stdbool.h>
 
 		#include "Descriptors.h"

Projects/Incomplete/StandaloneProgrammer/StandaloneProgrammer.c

@@ -108,6 +108,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Projects/Incomplete/StandaloneProgrammer/StandaloneProgrammer.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 
 		#include "DiskDevice.h"

Projects/LEDNotifier/LEDNotifier.c

@@ -108,6 +108,8 @@ int main(void)
 	/* Create a regular blocking character stream for the interface so that it can be used with the stdio.h functions */
 	CDC_Device_CreateBlockingStream(&VirtualSerial_CDC_Interface, &USBSerialStream);
 	
+	sei();
+
 	for (;;)
 	{
 		/* Read in next LED colour command from the host */

Projects/LEDNotifier/LEDNotifier.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <string.h>
 		#include <stdio.h>
 

Projects/Magstripe/Magstripe.c

@@ -77,6 +77,8 @@ int main(void)
 	for (uint8_t Buffer = 0; Buffer < TOTAL_TRACKS; Buffer++)
 	  BitBuffer_Init(&TrackDataBuffers[Buffer]);
 	  
+	sei();
+
 	for (;;)
 	{
 		if (Magstripe_GetStatus() & MAG_CARDPRESENT)

Projects/Magstripe/Magstripe.h

@@ -41,6 +41,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 
 		#include "Descriptors.h"
 		#include "Lib/MagstripeHW.h"

Projects/MissileLauncher/MissileLauncher.c

@@ -95,10 +95,11 @@ int main(void)
 {
 	SetupHardware();
 
-	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
-	
 	CmdState = CMD_STOP;
 
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
+
 	for (;;)
 	{
 		Read_Joystick_Status();

Projects/RelayBoard/RelayBoard.c

@@ -45,6 +45,8 @@ int main(void)
 {
 	SetupHardware();
 	
+	sei();
+
 	for (;;)
 	  USB_USBTask();
 }

Projects/RelayBoard/RelayBoard.h

@@ -41,6 +41,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 
 		#include "Descriptors.h"
 

Projects/TemperatureDataLogger/TempDataLogger.c

@@ -137,16 +137,17 @@ ISR(TIMER1_COMPA_vect, ISR_BLOCK)
  */
 int main(void)
 {
-	/* Fetch logging interval from EEPROM */
-	LoggingInterval500MS_SRAM = eeprom_read_byte(&LoggingInterval500MS_EEPROM);
-
 	SetupHardware();
 
-	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	/* Fetch logging interval from EEPROM */
+	LoggingInterval500MS_SRAM = eeprom_read_byte(&LoggingInterval500MS_EEPROM);
 
 	/* Mount and open the log file on the dataflash FAT partition */
 	OpenLogFile();
 
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
+
 	/* Discard the first sample from the temperature sensor, as it is generally incorrect */
 	volatile uint8_t Dummy = Temperature_GetTemperature();
 	(void)Dummy;

Projects/TemperatureDataLogger/TempDataLogger.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 		#include <stdio.h>
 		
 		#include "Descriptors.h"

Projects/USBtoSerial/USBtoSerial.c

@@ -77,6 +77,7 @@ int main(void)
 	Buffer_Initialize(&USARTtoUSB_Buffer);
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Projects/Webserver/Webserver.c

@@ -44,6 +44,7 @@ int main(void)
 	SetupHardware();
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Projects/Webserver/Webserver.h

@@ -41,6 +41,7 @@
 		#include <avr/wdt.h>
 		#include <avr/pgmspace.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 
 		#include <LUFA/Version.h>
 		#include <LUFA/Drivers/Board/LEDs.h>

Projects/XPLAINBridge/XPLAINBridge.c

@@ -81,6 +81,7 @@ int main(void)
 	Buffer_Initialize(&UARTtoUSB_Buffer);
 
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	sei();
 
 	for (;;)
 	{

Projects/XPLAINBridge/XPLAINBridge.h

@@ -40,6 +40,7 @@
 		#include <avr/io.h>
 		#include <avr/wdt.h>
 		#include <avr/power.h>
+		#include <avr/interrupt.h>
 
 		#include "AVRISPDescriptors.h"
 		#include "USARTDescriptors.h"