Added new NO_CLASS_DRIVER_AUTOFLUSH compile time option to disable automatic flushing of interfaces when the USB management tasks for each driver is called.

The MIDI class drivers now automatically flushes the MIDI interface when the MIDI class driver's USBTask() function is called.

8 files changed, 44 insertions, 24 deletions

diff --git a/LUFA/Drivers/USB/Class/Device/CDC.c b/LUFA/Drivers/USB/Class/Device/CDC.c
index 2019ede0a..3c1264cf5 100644
--- a/LUFA/Drivers/USB/Class/Device/CDC.c
+++ b/LUFA/Drivers/USB/Class/Device/CDC.c
@@ -148,7 +148,9 @@ void CDC_Device_USBTask(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
 	if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
 	  return;
 
+	#if !defined(NO_CLASS_DRIVER_AUTOFLUSH)
 	CDC_Device_Flush(CDCInterfaceInfo);
+	#endif
 }
 
 uint8_t CDC_Device_SendString(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
diff --git a/LUFA/Drivers/USB/Class/Device/MIDI.c b/LUFA/Drivers/USB/Class/Device/MIDI.c
index f7c59b51e..10a728a98 100644
--- a/LUFA/Drivers/USB/Class/Device/MIDI.c
+++ b/LUFA/Drivers/USB/Class/Device/MIDI.c
@@ -76,6 +76,16 @@ bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_Device_t* const MIDIInter
 	return true;
 }
 
+void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)
+{
+	if (USB_DeviceState != DEVICE_STATE_Configured)
+	  return;
+
+	#if !defined(NO_CLASS_DRIVER_AUTOFLUSH)
+	MIDI_Device_Flush(MIDIInterfaceInfo);
+	#endif
+}
+
 uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo,
                                     const MIDI_EventPacket_t* const Event)
 {
diff --git a/LUFA/Drivers/USB/Class/Device/MIDI.h b/LUFA/Drivers/USB/Class/Device/MIDI.h
index 3f633acfc..8ca3e7ca3 100644
--- a/LUFA/Drivers/USB/Class/Device/MIDI.h
+++ b/LUFA/Drivers/USB/Class/Device/MIDI.h
@@ -120,6 +120,13 @@
 			 */
 			bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 
+			/** General management task for a given MIDI class interface, required for the correct operation of the interface. This should
+			 *  be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
+			 *
+			 *  \param[in,out] MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state.
+			 */
+			void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
 			/** Sends a MIDI event packet to the host. If no host is connected, the event packet is discarded. Events are queued into the
 			 *  endpoint bank until either the endpoint bank is full, or \ref MIDI_Device_Flush() is called. This allows for multiple
 			 *  MIDI events to be packed into a single endpoint packet, increasing data throughput.
@@ -160,17 +167,6 @@
 			                                    MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
 
 		/* Inline Functions: */
-			/** General management task for a given MIDI class interface, required for the correct operation of the interface. This should
-			 *  be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
-			 *
-			 *  \param[in,out] MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state.
-			 */
-			static inline void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
-			static inline void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)
-			{
-				(void)MIDIInterfaceInfo;
-			}
-
 			/** Processes incoming control requests from the host, that are directed to the given MIDI class interface. This should be
 			 *  linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event.
 			 *
diff --git a/LUFA/Drivers/USB/Class/Device/MassStorage.c b/LUFA/Drivers/USB/Class/Device/MassStorage.c
index f053a043e..55ccba793 100644
--- a/LUFA/Drivers/USB/Class/Device/MassStorage.c
+++ b/LUFA/Drivers/USB/Class/Device/MassStorage.c
@@ -126,7 +126,7 @@ void MS_Device_USBTask(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
 			  Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataINEndpointNumber);
 
 			MSInterfaceInfo->State.CommandStatus.Status = CALLBACK_MS_Device_SCSICommandReceived(MSInterfaceInfo) ?
-			                                                                 MS_SCSI_COMMAND_Pass : MS_SCSI_COMMAND_Fail;
+			                                               MS_SCSI_COMMAND_Pass : MS_SCSI_COMMAND_Fail;
 			MSInterfaceInfo->State.CommandStatus.Signature           = MS_CSW_SIGNATURE;
 			MSInterfaceInfo->State.CommandStatus.Tag                 = MSInterfaceInfo->State.CommandBlock.Tag;
 			MSInterfaceInfo->State.CommandStatus.DataTransferResidue = MSInterfaceInfo->State.CommandBlock.DataTransferLength;
diff --git a/LUFA/Drivers/USB/Class/Host/CDC.c b/LUFA/Drivers/USB/Class/Host/CDC.c
index ab5305f8e..7753c0ecf 100644
--- a/LUFA/Drivers/USB/Class/Host/CDC.c
+++ b/LUFA/Drivers/USB/Class/Host/CDC.c
@@ -226,7 +226,9 @@ void CDC_Host_USBTask(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
 
 	Pipe_Freeze();
 
+	#if !defined(NO_CLASS_DRIVER_AUTOFLUSH)
 	CDC_Host_Flush(CDCInterfaceInfo);
+	#endif
 }
 
 uint8_t CDC_Host_SetLineEncoding(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
diff --git a/LUFA/Drivers/USB/Class/Host/MIDI.c b/LUFA/Drivers/USB/Class/Host/MIDI.c
index c500240e7..f70f6e422 100644
--- a/LUFA/Drivers/USB/Class/Host/MIDI.c
+++ b/LUFA/Drivers/USB/Class/Host/MIDI.c
@@ -141,6 +141,16 @@ static uint8_t DCOMP_MIDI_Host_NextMIDIStreamingDataEndpoint(void* const Current
 	return DESCRIPTOR_SEARCH_NotFound;
 }
 
+void MIDI_Host_USBTask(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo)
+{
+	if ((USB_HostState != HOST_STATE_Configured) || !(MIDIInterfaceInfo->State.IsActive))
+	  return;
+
+	#if !defined(NO_CLASS_DRIVER_AUTOFLUSH)
+	MIDI_Host_Flush(MIDIInterfaceInfo);
+	#endif	
+}
+
 uint8_t MIDI_Host_Flush(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo)
 {
 	if ((USB_HostState != HOST_STATE_Configured) || !(MIDIInterfaceInfo->State.IsActive))
diff --git a/LUFA/Drivers/USB/Class/Host/MIDI.h b/LUFA/Drivers/USB/Class/Host/MIDI.h
index a21bdbd52..393806ba5 100644
--- a/LUFA/Drivers/USB/Class/Host/MIDI.h
+++ b/LUFA/Drivers/USB/Class/Host/MIDI.h
@@ -137,6 +137,13 @@
 			                                 uint16_t ConfigDescriptorSize,
 			                                 void* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);
 
+			/** General management task for a given MIDI host class interface, required for the correct operation of the interface. This should
+			 *  be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
+			 *
+			 *  \param[in,out] MIDIInterfaceInfo  Pointer to a structure containing an MIDI Class host configuration and state.
+			 */
+			void MIDI_Host_USBTask(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
 			/** Sends a MIDI event packet to the device. If no device is connected, the event packet is discarded.
 			 *
 			 *  \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
@@ -174,18 +181,6 @@
 			bool MIDI_Host_ReceiveEventPacket(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo,
 			                                  MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
 
-		/* Inline Functions: */
-			/** General management task for a given MIDI host class interface, required for the correct operation of the interface. This should
-			 *  be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
-			 *
-			 *  \param[in,out] MIDIInterfaceInfo  Pointer to a structure containing an MIDI Class host configuration and state.
-			 */
-			static inline void MIDI_Host_USBTask(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
-			static inline void MIDI_Host_USBTask(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo)
-			{
-				(void)MIDIInterfaceInfo;
-			}
-
 	/* Private Interface - For use in library only: */
 	#if !defined(__DOXYGEN__)
 		/* Function Prototypes: */
diff --git a/LUFA/Drivers/USB/Class/Host/Printer.c b/LUFA/Drivers/USB/Class/Host/Printer.c
index e69948b1e..ec56c314c 100644
--- a/LUFA/Drivers/USB/Class/Host/Printer.c
+++ b/LUFA/Drivers/USB/Class/Host/Printer.c
@@ -142,7 +142,12 @@ static uint8_t DCOMP_PRNT_Host_NextPRNTInterfaceEndpoint(void* CurrentDescriptor
 
 void PRNT_Host_USBTask(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
 {
+	if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
+	  return;
+
+	#if !defined(NO_CLASS_DRIVER_AUTOFLUSH)
 	PRNT_Host_Flush(PRNTInterfaceInfo);
+	#endif
 }
 
 uint8_t PRNT_Host_SetBidirectionalMode(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)