From 7c5444b89a49df7cb671b0b041567990d2a3012e Mon Sep 17 00:00:00 2001
From: Dean Camera <dean@fourwalledcubicle.com>
Date: Tue, 2 Jun 2009 10:54:32 +0000
Subject: [PATCH] Removed new Start of Frame event from the library;
 performance suffered far too much and it was only useful in one of the
 standard classes (HID). Altered HID demos to use the previous method of
 tracking millisecond periods via a hardware timer rather than the SOF events.

Fixed MIDI class driver blocking on unread events to the host.
---
 Demos/Device/CDC/CDC.h                     |  1 -
 Demos/Device/DualCDC/DualCDC.h             |  3 +--
 Demos/Device/GenericHID/GenericHID.c       | 13 +++++++---
 Demos/Device/GenericHID/GenericHID.h       |  1 -
 Demos/Device/Joystick/Joystick.c           | 13 +++++++---
 Demos/Device/Joystick/Joystick.h           |  1 -
 Demos/Device/Keyboard/Keyboard.c           | 13 +++++++---
 Demos/Device/Keyboard/Keyboard.h           |  1 -
 Demos/Device/KeyboardMouse/KeyboardMouse.c | 21 +++++++++++-----
 Demos/Device/KeyboardMouse/KeyboardMouse.h |  1 -
 Demos/Device/Mouse/Mouse.c                 | 13 +++++++---
 Demos/Device/Mouse/Mouse.h                 |  1 -
 Demos/Device/RNDISEthernet/RNDISEthernet.h |  1 -
 Demos/Device/USBtoSerial/USBtoSerial.h     |  1 -
 LUFA/ChangeLog.txt                         |  1 -
 LUFA/Drivers/USB/Class/Device/HID.c        | 26 ++++----------------
 LUFA/Drivers/USB/Class/Device/HID.h        |  3 +--
 LUFA/Drivers/USB/Class/Device/MIDI.c       | 28 ++++------------------
 LUFA/Drivers/USB/HighLevel/Events.h        |  6 -----
 LUFA/Drivers/USB/HighLevel/USBInterrupt.c  | 18 --------------
 LUFA/Drivers/USB/LowLevel/LowLevel.c       |  5 ----
 Projects/Magstripe/Magstripe.c             | 13 ++++++++--
 Projects/Magstripe/Magstripe.h             |  1 -
 Projects/Magstripe/makefile                |  2 +-
 24 files changed, 78 insertions(+), 109 deletions(-)

diff --git a/Demos/Device/CDC/CDC.h b/Demos/Device/CDC/CDC.h
index b487813b0..dc4033448 100644
--- a/Demos/Device/CDC/CDC.h
+++ b/Demos/Device/CDC/CDC.h
@@ -64,6 +64,5 @@
 		void EVENT_USB_Disconnect(void);
 		void EVENT_USB_ConfigurationChanged(void);
 		void EVENT_USB_UnhandledControlPacket(void);
-		void EVENT_USB_StartOfFrame(void);
 
 #endif
diff --git a/Demos/Device/DualCDC/DualCDC.h b/Demos/Device/DualCDC/DualCDC.h
index 3c1e29612..fc782ee5a 100644
--- a/Demos/Device/DualCDC/DualCDC.h
+++ b/Demos/Device/DualCDC/DualCDC.h
@@ -64,6 +64,5 @@
 		void EVENT_USB_Disconnect(void);
 		void EVENT_USB_ConfigurationChanged(void);
 		void EVENT_USB_UnhandledControlPacket(void);
-		void EVENT_USB_StartOfFrame(void);
-		
+
 #endif
diff --git a/Demos/Device/GenericHID/GenericHID.c b/Demos/Device/GenericHID/GenericHID.c
index 4dfb8e455..9c8023a5c 100644
--- a/Demos/Device/GenericHID/GenericHID.c
+++ b/Demos/Device/GenericHID/GenericHID.c
@@ -40,7 +40,7 @@ USB_ClassInfo_HID_t Generic_HID_Interface =
 		.ReportOUTEndpointNumber = GENERIC_OUT_EPNUM,
 		.ReportOUTEndpointSize   = GENERIC_EPSIZE,
 		
-		.ReportBufferSize        = GENERIC_REPORT_SIZE,
+		.ReportINBufferSize      = GENERIC_REPORT_SIZE,
 
 		.UsingReportProtocol     = true,
 	};
@@ -70,6 +70,12 @@ void SetupHardware(void)
 	/* Hardware Initialization */
 	LEDs_Init();
 	USB_Init();
+
+	/* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */
+	OCR0A  = ((F_CPU / 64) / 1000);
+	TCCR0A = (1 << WGM01);
+	TCCR0B = ((1 << CS01) | (1 << CS00));
+	TIMSK0 = (1 << OCIE0A);
 }
 
 void EVENT_USB_Connect(void)
@@ -95,9 +101,10 @@ void EVENT_USB_UnhandledControlPacket(void)
 	USB_HID_ProcessControlPacket(&Generic_HID_Interface);
 }
 
-void EVENT_USB_StartOfFrame(void)
+ISR(TIMER0_COMPA_vect, ISR_BLOCK)
 {
-	USB_HID_RegisterStartOfFrame(&Generic_HID_Interface);
+	if (Generic_HID_Interface.IdleMSRemaining)
+	  Generic_HID_Interface.IdleMSRemaining--;
 }
 
 uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData)
diff --git a/Demos/Device/GenericHID/GenericHID.h b/Demos/Device/GenericHID/GenericHID.h
index 27426431c..94a09af93 100644
--- a/Demos/Device/GenericHID/GenericHID.h
+++ b/Demos/Device/GenericHID/GenericHID.h
@@ -64,7 +64,6 @@
 		void EVENT_USB_Disconnect(void);
 		void EVENT_USB_ConfigurationChanged(void);
 		void EVENT_USB_UnhandledControlPacket(void);
-		void EVENT_USB_StartOfFrame(void);
 
 		uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData);
 		void     CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo,
diff --git a/Demos/Device/Joystick/Joystick.c b/Demos/Device/Joystick/Joystick.c
index e073a87fd..d5c20737d 100644
--- a/Demos/Device/Joystick/Joystick.c
+++ b/Demos/Device/Joystick/Joystick.c
@@ -37,7 +37,7 @@ USB_ClassInfo_HID_t Joystick_HID_Interface =
 		.ReportINEndpointNumber  = JOYSTICK_EPNUM,
 		.ReportINEndpointSize    = JOYSTICK_EPSIZE,
 		
-		.ReportBufferSize        = sizeof(USB_JoystickReport_Data_t),
+		.ReportINBufferSize      = sizeof(USB_JoystickReport_Data_t),
 
 		.UsingReportProtocol     = true,
 	};
@@ -69,6 +69,12 @@ void SetupHardware(void)
 	LEDs_Init();
 	Buttons_Init();
 	USB_Init();
+
+	/* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */
+	OCR0A  = ((F_CPU / 64) / 1000);
+	TCCR0A = (1 << WGM01);
+	TCCR0B = ((1 << CS01) | (1 << CS00));
+	TIMSK0 = (1 << OCIE0A);
 }
 
 void EVENT_USB_Connect(void)
@@ -94,9 +100,10 @@ void EVENT_USB_UnhandledControlPacket(void)
 	USB_HID_ProcessControlPacket(&Joystick_HID_Interface);
 }
 
-void EVENT_USB_StartOfFrame(void)
+ISR(TIMER0_COMPA_vect, ISR_BLOCK)
 {
-	USB_HID_RegisterStartOfFrame(&Joystick_HID_Interface);
+	if (Joystick_HID_Interface.IdleMSRemaining)
+	  Joystick_HID_Interface.IdleMSRemaining--;
 }
 
 uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData)
diff --git a/Demos/Device/Joystick/Joystick.h b/Demos/Device/Joystick/Joystick.h
index 461d0d0cc..164c58ea2 100644
--- a/Demos/Device/Joystick/Joystick.h
+++ b/Demos/Device/Joystick/Joystick.h
@@ -75,7 +75,6 @@
 		void EVENT_USB_Disconnect(void);
 		void EVENT_USB_ConfigurationChanged(void);
 		void EVENT_USB_UnhandledControlPacket(void);
-		void EVENT_USB_StartOfFrame(void);
 
 		uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData);
 		void     CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo,
diff --git a/Demos/Device/Keyboard/Keyboard.c b/Demos/Device/Keyboard/Keyboard.c
index d8893bfaa..d506657a6 100644
--- a/Demos/Device/Keyboard/Keyboard.c
+++ b/Demos/Device/Keyboard/Keyboard.c
@@ -41,7 +41,7 @@ USB_ClassInfo_HID_t Keyboard_HID_Interface =
         .ReportOUTEndpointNumber = KEYBOARD_LEDS_EPNUM,
         .ReportOUTEndpointSize   = KEYBOARD_EPSIZE,
         
-		.ReportBufferSize        = sizeof(USB_KeyboardReport_Data_t),
+		.ReportINBufferSize      = sizeof(USB_KeyboardReport_Data_t),
 
         .IdleCount               = 500,
     };
@@ -73,6 +73,12 @@ void SetupHardware()
     LEDs_Init();
     Buttons_Init();
     USB_Init();
+
+	/* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */
+	OCR0A  = ((F_CPU / 64) / 1000);
+	TCCR0A = (1 << WGM01);
+	TCCR0B = ((1 << CS01) | (1 << CS00));
+	TIMSK0 = (1 << OCIE0A);
 }
 
 void EVENT_USB_Connect(void)
@@ -98,9 +104,10 @@ void EVENT_USB_UnhandledControlPacket(void)
     USB_HID_ProcessControlPacket(&Keyboard_HID_Interface);
 }
 
-void EVENT_USB_StartOfFrame(void)
+ISR(TIMER0_COMPA_vect, ISR_BLOCK)
 {
-    USB_HID_RegisterStartOfFrame(&Keyboard_HID_Interface);
+	if (Keyboard_HID_Interface.IdleMSRemaining)
+	  Keyboard_HID_Interface.IdleMSRemaining--;
 }
 
 uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData)
diff --git a/Demos/Device/Keyboard/Keyboard.h b/Demos/Device/Keyboard/Keyboard.h
index eeb7be9b7..9cfc9aba4 100644
--- a/Demos/Device/Keyboard/Keyboard.h
+++ b/Demos/Device/Keyboard/Keyboard.h
@@ -78,7 +78,6 @@
 		void EVENT_USB_Disconnect(void);
 		void EVENT_USB_ConfigurationChanged(void);
 		void EVENT_USB_UnhandledControlPacket(void);
-		void EVENT_USB_StartOfFrame(void);
 
 		uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData);
 		void     CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo,
diff --git a/Demos/Device/KeyboardMouse/KeyboardMouse.c b/Demos/Device/KeyboardMouse/KeyboardMouse.c
index 8f6a573a6..71a8375aa 100644
--- a/Demos/Device/KeyboardMouse/KeyboardMouse.c
+++ b/Demos/Device/KeyboardMouse/KeyboardMouse.c
@@ -41,7 +41,7 @@ USB_ClassInfo_HID_t Keyboard_HID_Interface =
 		.ReportOUTEndpointNumber = KEYBOARD_OUT_EPNUM,
 		.ReportOUTEndpointSize   = HID_EPSIZE,
 		
-		.ReportBufferSize        = sizeof(USB_KeyboardReport_Data_t),
+		.ReportINBufferSize      = sizeof(USB_KeyboardReport_Data_t),
 
 		.IdleCount               = 500,
 	};
@@ -53,7 +53,7 @@ USB_ClassInfo_HID_t Mouse_HID_Interface =
 		.ReportINEndpointNumber  = MOUSE_IN_EPNUM,
 		.ReportINEndpointSize    = HID_EPSIZE,
 
-		.ReportBufferSize        = sizeof(USB_MouseReport_Data_t),
+		.ReportINBufferSize      = sizeof(USB_MouseReport_Data_t),
 
 		.ReportOUTEndpointNumber = 0,
 		.ReportOUTEndpointSize   = 0,
@@ -85,7 +85,13 @@ void SetupHardware()
 	/* Hardware Initialization */
 	Joystick_Init();
 	LEDs_Init();
-	USB_Init();	
+	USB_Init();
+
+	/* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */
+	OCR0A  = ((F_CPU / 64) / 1000);
+	TCCR0A = (1 << WGM01);
+	TCCR0B = ((1 << CS01) | (1 << CS00));
+	TIMSK0 = (1 << OCIE0A);
 }
 
 void EVENT_USB_Connect(void)
@@ -115,10 +121,13 @@ void EVENT_USB_UnhandledControlPacket(void)
 	USB_HID_ProcessControlPacket(&Mouse_HID_Interface);
 }
 
-void EVENT_USB_StartOfFrame(void)
+ISR(TIMER0_COMPA_vect, ISR_BLOCK)
 {
-	USB_HID_RegisterStartOfFrame(&Keyboard_HID_Interface);
-	USB_HID_RegisterStartOfFrame(&Mouse_HID_Interface);
+	if (Keyboard_HID_Interface.IdleMSRemaining)
+	  Keyboard_HID_Interface.IdleMSRemaining--;
+
+	if (Mouse_HID_Interface.IdleMSRemaining)
+	  Mouse_HID_Interface.IdleMSRemaining--;
 }
 
 uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData)
diff --git a/Demos/Device/KeyboardMouse/KeyboardMouse.h b/Demos/Device/KeyboardMouse/KeyboardMouse.h
index a5c3c5db2..c18c6e1af 100644
--- a/Demos/Device/KeyboardMouse/KeyboardMouse.h
+++ b/Demos/Device/KeyboardMouse/KeyboardMouse.h
@@ -82,7 +82,6 @@
 		void EVENT_USB_Disconnect(void);
 		void EVENT_USB_ConfigurationChanged(void);
 		void EVENT_USB_UnhandledControlPacket(void);
-		void EVENT_USB_StartOfFrame(void);
 
 		uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData);
 		void     CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo,
diff --git a/Demos/Device/Mouse/Mouse.c b/Demos/Device/Mouse/Mouse.c
index 57c1aa114..01ead0012 100644
--- a/Demos/Device/Mouse/Mouse.c
+++ b/Demos/Device/Mouse/Mouse.c
@@ -37,7 +37,7 @@ USB_ClassInfo_HID_t Mouse_HID_Interface =
 		.ReportINEndpointNumber  = MOUSE_EPNUM,
 		.ReportINEndpointSize    = MOUSE_EPSIZE,
 
-		.ReportBufferSize        = sizeof(USB_MouseReport_Data_t),
+		.ReportINBufferSize      = sizeof(USB_MouseReport_Data_t),
 	};
 
 int main(void)
@@ -67,6 +67,12 @@ void SetupHardware(void)
 	LEDs_Init();
 	Buttons_Init();
 	USB_Init();
+
+	/* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */
+	OCR0A  = ((F_CPU / 64) / 1000);
+	TCCR0A = (1 << WGM01);
+	TCCR0B = ((1 << CS01) | (1 << CS00));
+	TIMSK0 = (1 << OCIE0A);
 }
 
 void EVENT_USB_Connect(void)
@@ -92,9 +98,10 @@ void EVENT_USB_UnhandledControlPacket(void)
 	USB_HID_ProcessControlPacket(&Mouse_HID_Interface);
 }
 
-void EVENT_USB_StartOfFrame(void)
+ISR(TIMER0_COMPA_vect, ISR_BLOCK)
 {
-	USB_HID_RegisterStartOfFrame(&Mouse_HID_Interface);
+	if (Mouse_HID_Interface.IdleMSRemaining)
+	  Mouse_HID_Interface.IdleMSRemaining--;
 }
 
 uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData)
diff --git a/Demos/Device/Mouse/Mouse.h b/Demos/Device/Mouse/Mouse.h
index 5c8049590..9134e6772 100644
--- a/Demos/Device/Mouse/Mouse.h
+++ b/Demos/Device/Mouse/Mouse.h
@@ -77,7 +77,6 @@
 		void EVENT_USB_Disconnect(void);
 		void EVENT_USB_ConfigurationChanged(void);
 		void EVENT_USB_UnhandledControlPacket(void);
-		void EVENT_USB_StartOfFrame(void);
 
 		uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData);
 		void     CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo,
diff --git a/Demos/Device/RNDISEthernet/RNDISEthernet.h b/Demos/Device/RNDISEthernet/RNDISEthernet.h
index bc5004205..f0247ce81 100644
--- a/Demos/Device/RNDISEthernet/RNDISEthernet.h
+++ b/Demos/Device/RNDISEthernet/RNDISEthernet.h
@@ -71,7 +71,6 @@
 		void EVENT_USB_Disconnect(void);
 		void EVENT_USB_ConfigurationChanged(void);
 		void EVENT_USB_UnhandledControlPacket(void);
-		void EVENT_USB_StartOfFrame(void);
 		
 		void CALLBACK_USB_RNDIS_ProcessRNDISControlMessage(USB_ClassInfo_RNDIS_t* RNDISInterfaceInfo);
 	
diff --git a/Demos/Device/USBtoSerial/USBtoSerial.h b/Demos/Device/USBtoSerial/USBtoSerial.h
index 7ff796e70..bc8d98398 100644
--- a/Demos/Device/USBtoSerial/USBtoSerial.h
+++ b/Demos/Device/USBtoSerial/USBtoSerial.h
@@ -66,7 +66,6 @@
 		void EVENT_USB_Disconnect(void);
 		void EVENT_USB_ConfigurationChanged(void);
 		void EVENT_USB_UnhandledControlPacket(void);
-		void EVENT_USB_StartOfFrame(void);
 		
 		void EVENT_USB_CDC_LineEncodingChanged(USB_ClassInfo_CDC_t* CDCInterfaceInfo);
 
diff --git a/LUFA/ChangeLog.txt b/LUFA/ChangeLog.txt
index fe3b63360..67f88b9a3 100644
--- a/LUFA/ChangeLog.txt
+++ b/LUFA/ChangeLog.txt
@@ -38,7 +38,6 @@
   *    LUFA/Drivers/USB/Class/ directory to LUFA/Drivers/USB/HighLevel/ in preperation for the new USB class APIs
   *  - Moved out each demos' functionality library files (e.g. Ring Buffer library) to /Lib directories for a better directory structure
   *  - Removed Tx interrupt from the USBtoSerial demo; now sends characters via polling to ensure more time for the Rx interrupt
-  *  - Added new EVENT_USB_StartOfFrame event in the library to indicate the start of each USB frame (when generated)
   *  - Removed psuedo-scheduler, dynamic memory block allocator from the library (no longer needed and not used respectively)
   *
   *
diff --git a/LUFA/Drivers/USB/Class/Device/HID.c b/LUFA/Drivers/USB/Class/Device/HID.c
index fbc5e3a5c..5f8ccfbae 100644
--- a/LUFA/Drivers/USB/Class/Device/HID.c
+++ b/LUFA/Drivers/USB/Class/Device/HID.c
@@ -45,7 +45,7 @@ void USB_HID_ProcessControlPacket(USB_ClassInfo_HID_t* HIDInterfaceInfo)
 			{
 				Endpoint_ClearSETUP();	
 
-				uint8_t  ReportINData[HIDInterfaceInfo->ReportBufferSize];
+				uint8_t  ReportINData[HIDInterfaceInfo->ReportINBufferSize];
 				uint16_t ReportINSize;
 
 				memset(ReportINData, 0, sizeof(ReportINData));
@@ -146,12 +146,6 @@ bool USB_HID_ConfigureEndpoints(USB_ClassInfo_HID_t* HIDInterfaceInfo)
 	
 	return true;
 }
-
-void USB_HID_RegisterStartOfFrame(USB_ClassInfo_HID_t* HIDInterfaceInfo)
-{
-	if (HIDInterfaceInfo->IdleMSRemaining)
-	  HIDInterfaceInfo->IdleMSRemaining--;
-}
 		
 void USB_HID_USBTask(USB_ClassInfo_HID_t* HIDInterfaceInfo)
 {
@@ -166,7 +160,7 @@ void USB_HID_USBTask(USB_ClassInfo_HID_t* HIDInterfaceInfo)
 		if (HIDInterfaceInfo->IdleCount && !(HIDInterfaceInfo->IdleMSRemaining))
 		  HIDInterfaceInfo->IdleMSRemaining = HIDInterfaceInfo->IdleCount;
 
-		uint8_t  ReportINData[HIDInterfaceInfo->ReportBufferSize];
+		uint8_t  ReportINData[HIDInterfaceInfo->ReportINBufferSize];
 		uint16_t ReportINSize;
 
 		memset(ReportINData, 0, sizeof(ReportINData));
@@ -174,13 +168,7 @@ void USB_HID_USBTask(USB_ClassInfo_HID_t* HIDInterfaceInfo)
 		ReportINSize = CALLBACK_USB_HID_CreateNextHIDReport(HIDInterfaceInfo, ReportINData);
 
 		if (ReportINSize)
-		{
-			Endpoint_Write_Stream_LE(ReportINData, ReportINSize
-			#if !defined(NO_STREAM_CALLBACKS)
-			                         , NO_STREAM_CALLBACK
-			#endif
-			                         );
-		}
+		  Endpoint_Write_Stream_LE(ReportINData, ReportINSize, NO_STREAM_CALLBACK);
 		
 		Endpoint_ClearIN();
 	}
@@ -195,13 +183,7 @@ void USB_HID_USBTask(USB_ClassInfo_HID_t* HIDInterfaceInfo)
 			uint8_t  ReportOUTData[ReportOUTSize];
 			
 			if (ReportOUTSize)
-			{
-				Endpoint_Read_Stream_LE(ReportOUTData, ReportOUTSize
-				#if !defined(NO_STREAM_CALLBACKS)
-			                            , NO_STREAM_CALLBACK
-				#endif
-			                            );
-			}
+			  Endpoint_Read_Stream_LE(ReportOUTData, ReportOUTSize, NO_STREAM_CALLBACK);
 			  
 			CALLBACK_USB_HID_ProcessReceivedHIDReport(HIDInterfaceInfo, ReportOUTData, ReportOUTSize);
 			
diff --git a/LUFA/Drivers/USB/Class/Device/HID.h b/LUFA/Drivers/USB/Class/Device/HID.h
index 8fdeb064a..4501fcb1c 100644
--- a/LUFA/Drivers/USB/Class/Device/HID.h
+++ b/LUFA/Drivers/USB/Class/Device/HID.h
@@ -96,7 +96,7 @@
 			uint8_t  ReportOUTEndpointNumber; /**< Endpoint number of the HID interface's OUT report endpoint, if used */
 			uint16_t ReportOUTEndpointSize;  /**< Size in bytes of the HID interface's OUT report endpoint, if used */
 			
-			uint8_t  ReportBufferSize;
+			uint8_t  ReportINBufferSize;
 
 			bool     UsingReportProtocol; /**< Indicates if the HID interface is set to Boot or Report protocol mode */
 			uint16_t IdleCount; /**< Report idle period, in ms, set by the host */
@@ -106,7 +106,6 @@
 	/* Function Prototypes: */
 		bool USB_HID_ConfigureEndpoints(USB_ClassInfo_HID_t* HIDInterfaceInfo);
 		void USB_HID_ProcessControlPacket(USB_ClassInfo_HID_t* HIDInterfaceInfo);
-		void USB_HID_RegisterStartOfFrame(USB_ClassInfo_HID_t* HIDInterfaceInfo);
 		void USB_HID_USBTask(USB_ClassInfo_HID_t* HIDInterfaceInfo);
 		
 		uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData);
diff --git a/LUFA/Drivers/USB/Class/Device/MIDI.c b/LUFA/Drivers/USB/Class/Device/MIDI.c
index 9b4cd4b04..42c06904b 100644
--- a/LUFA/Drivers/USB/Class/Device/MIDI.c
+++ b/LUFA/Drivers/USB/Class/Device/MIDI.c
@@ -55,36 +55,18 @@ bool USB_MIDI_ConfigureEndpoints(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo)
 	return true;
 }
 
-void USB_MIDI_SendNoteChange(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, const uint8_t Pitch, const bool OnOff,
-                             const uint8_t CableID, const uint8_t Channel)
-{
-	if (!(USB_IsConnected))
-	  return;
-	
-	Endpoint_SelectEndpoint(MIDIInterfaceInfo->DataINEndpointNumber);
-	while (!(Endpoint_IsReadWriteAllowed()));
-
-	uint8_t Command = ((OnOff)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
-
-	Endpoint_Write_Byte((CableID << 4) | (Command >> 4));
-
-	Endpoint_Write_Byte(Command | Channel);
-	Endpoint_Write_Byte(Pitch);
-	Endpoint_Write_Byte(MIDI_STANDARD_VELOCITY);
-	
-	Endpoint_ClearIN();
-}
-
 void USB_MIDI_SendEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event)
 {
 	if (!(USB_IsConnected))
 	  return;
 	
 	Endpoint_SelectEndpoint(MIDIInterfaceInfo->DataINEndpointNumber);
-	while (!(Endpoint_IsReadWriteAllowed()));
 
-	Endpoint_Write_Stream_LE(Event, sizeof(USB_MIDI_EventPacket_t), NO_STREAM_CALLBACK);
-	Endpoint_ClearIN();
+	if (Endpoint_IsReadWriteAllowed());
+	{
+		Endpoint_Write_Stream_LE(Event, sizeof(USB_MIDI_EventPacket_t), NO_STREAM_CALLBACK);
+		Endpoint_ClearIN();
+	}
 }
 
 bool USB_MIDI_ReceiveEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event)
diff --git a/LUFA/Drivers/USB/HighLevel/Events.h b/LUFA/Drivers/USB/HighLevel/Events.h
index ded027b12..e6d2beaa7 100644
--- a/LUFA/Drivers/USB/HighLevel/Events.h
+++ b/LUFA/Drivers/USB/HighLevel/Events.h
@@ -267,11 +267,6 @@
 			 *        \ref Group_USBManagement documentation).
 			 */
 			void EVENT_USB_Reset(void);
-			
-			/** Event for the USB start of frame interrupt, firing once each millisecond in either device or host
-			 *  mode, while USB frames are being generated or recieved.
-			 */
-			void EVENT_USB_StartOfFrame(void);
 		#endif
 		
 	/* Private Interface - For use in library only: */
@@ -308,7 +303,6 @@
 				void EVENT_USB_Suspend(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
 				void EVENT_USB_WakeUp(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
 				void EVENT_USB_Reset(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
-				void EVENT_USB_StartOfFrame(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
 			#endif
 	#endif
 
diff --git a/LUFA/Drivers/USB/HighLevel/USBInterrupt.c b/LUFA/Drivers/USB/HighLevel/USBInterrupt.c
index 0ccbe6155..0b9d08223 100644
--- a/LUFA/Drivers/USB/HighLevel/USBInterrupt.c
+++ b/LUFA/Drivers/USB/HighLevel/USBInterrupt.c
@@ -180,15 +180,6 @@ ISR(USB_GEN_vect, ISR_BLOCK)
 
 		EVENT_USB_Reset();
 	}
-	
-	if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
-	{
-		USB_INT_Clear(USB_INT_SOFI);
-
-		FrameElapsed = true;
-		
-		EVENT_USB_StartOfFrame();
-	}
 	#endif
 	
 	#if defined(USB_CAN_BE_HOST)
@@ -241,15 +232,6 @@ ISR(USB_GEN_vect, ISR_BLOCK)
 
 		USB_ResetInterface();
 	}
-
-	if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI))
-	{
-		USB_INT_Clear(USB_INT_HSOFI);
-
-		FrameElapsed = true;
-		
-		EVENT_USB_StartOfFrame();
-	}
 	#endif
 
 	#if defined(USB_CAN_BE_BOTH)
diff --git a/LUFA/Drivers/USB/LowLevel/LowLevel.c b/LUFA/Drivers/USB/LowLevel/LowLevel.c
index 255a6ef29..82705db96 100644
--- a/LUFA/Drivers/USB/LowLevel/LowLevel.c
+++ b/LUFA/Drivers/USB/LowLevel/LowLevel.c
@@ -228,8 +228,6 @@ void USB_ResetInterface(void)
 	#if defined(USB_DEVICE_ONLY)	
 	USB_INT_Enable(USB_INT_SUSPEND);
 	USB_INT_Enable(USB_INT_EORSTI);
-	USB_INT_Enable(USB_INT_SOFI);
-
 	#if defined(CONTROL_ONLY_DEVICE)
 	UENUM = ENDPOINT_CONTROLEP;
 	#endif
@@ -245,13 +243,11 @@ void USB_ResetInterface(void)
 	
 	USB_INT_Enable(USB_INT_SRPI);
 	USB_INT_Enable(USB_INT_BCERRI);
-	USB_INT_Enable(USB_INT_HSOFI);
 	#else
 	if (USB_CurrentMode == USB_MODE_DEVICE)
 	{
 		USB_INT_Enable(USB_INT_SUSPEND);
 		USB_INT_Enable(USB_INT_EORSTI);
-		USB_INT_Enable(USB_INT_SOFI);
 
 		#if defined(CONTROL_ONLY_DEVICE)
 		UENUM = ENDPOINT_CONTROLEP;
@@ -269,7 +265,6 @@ void USB_ResetInterface(void)
 		
 		USB_INT_Enable(USB_INT_SRPI);
 		USB_INT_Enable(USB_INT_BCERRI);
-		USB_INT_Enable(USB_INT_HSOFI);
 	}
 	#endif
 }
diff --git a/Projects/Magstripe/Magstripe.c b/Projects/Magstripe/Magstripe.c
index 5cd107e9a..871db28c3 100644
--- a/Projects/Magstripe/Magstripe.c
+++ b/Projects/Magstripe/Magstripe.c
@@ -39,6 +39,8 @@ USB_ClassInfo_HID_t Keyboard_HID_Interface =
 
 		.ReportINEndpointNumber  = KEYBOARD_EPNUM,
 		.ReportINEndpointSize    = KEYBOARD_EPSIZE,
+		
+		.ReportINBufferSize      = sizeof(USB_KeyboardReport_Data_t),
 	};
 
 int main(void)
@@ -70,6 +72,12 @@ void SetupHardware(void)
 	/* Hardware Initialization */
 	Magstripe_Init();
 	USB_Init();
+
+	/* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */
+	OCR0A  = ((F_CPU / 64) / 1000);
+	TCCR0A = (1 << WGM01);
+	TCCR0B = ((1 << CS01) | (1 << CS00));
+	TIMSK0 = (1 << OCIE0A);
 }
 
 void ReadMagstripeData(void)
@@ -113,9 +121,10 @@ void EVENT_USB_UnhandledControlPacket(void)
 	USB_HID_ProcessControlPacket(&Keyboard_HID_Interface);
 }
 
-void EVENT_USB_StartOfFrame(void)
+ISR(TIMER0_COMPA_vect, ISR_BLOCK)
 {
-	USB_HID_RegisterStartOfFrame(&Keyboard_HID_Interface);
+	if (Keyboard_HID_Interface.IdleMSRemaining)
+	  Keyboard_HID_Interface.IdleMSRemaining--;
 }
 
 uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData)
diff --git a/Projects/Magstripe/Magstripe.h b/Projects/Magstripe/Magstripe.h
index b0e47d596..2b8aa3770 100644
--- a/Projects/Magstripe/Magstripe.h
+++ b/Projects/Magstripe/Magstripe.h
@@ -78,7 +78,6 @@
 		
 		void EVENT_USB_ConfigurationChanged(void);
 		void EVENT_USB_UnhandledControlPacket(void);
-		void EVENT_USB_StartOfFrame(void);
 
 		uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData);
 		void     CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo,
diff --git a/Projects/Magstripe/makefile b/Projects/Magstripe/makefile
index 138456fe8..80b17448f 100644
--- a/Projects/Magstripe/makefile
+++ b/Projects/Magstripe/makefile
@@ -183,7 +183,7 @@ CSTANDARD = -std=gnu99
 
 # Place -D or -U options here for C sources
 CDEFS  = -DF_CPU=$(F_CPU)UL -DF_CLOCK=$(F_CLOCK)UL -DBOARD=BOARD_$(BOARD)
-CDEFS += -DUSE_NONSTANDARD_DESCRIPTOR_NAMES -DNO_STREAM_CALLBACKS -DUSB_DEVICE_ONLY
+CDEFS += -DUSE_NONSTANDARD_DESCRIPTOR_NAMES -DUSB_DEVICE_ONLY
 CDEFS += -DFIXED_CONTROL_ENDPOINT_SIZE=8 -DUSE_SINGLE_DEVICE_CONFIGURATION
 CDEFS += -DUSE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
 CDEFS += -DMAG_T1_CLOCK="(1 << 0)"
-- 
GitLab