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[pub/USBasp.git] / LUFA / Drivers / USB / Class / Device / MIDI.c

diff --git a/LUFA/Drivers/USB/Class/Device/MIDI.c b/LUFA/Drivers/USB/Class/Device/MIDI.c
index b49bb73..b72c2b0 100644 (file)
--- a/LUFA/Drivers/USB/Class/Device/MIDI.c
+++ b/LUFA/Drivers/USB/Class/Device/MIDI.c
@@ -1,21 +1,21 @@
 /*\r
              LUFA Library\r
-     Copyright (C) Dean Camera, 2009.\r
+     Copyright (C) Dean Camera, 2010.\r
               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r
-  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
-  Permission to use, copy, modify, and distribute this software\r
-  and its documentation for any purpose and without fee is hereby\r
-  granted, provided that the above copyright notice appear in all\r
-  copies and that both that the copyright notice and this\r
-  permission notice and warranty disclaimer appear in supporting\r
-  documentation, and that the name of the author not be used in\r
-  advertising or publicity pertaining to distribution of the\r
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+  Permission to use, copy, modify, distribute, and sell this \r
+  software and its documentation for any purpose is hereby granted\r
+  without fee, provided that the above copyright notice appear in \r
+  all copies and that both that the copyright notice and this\r
+  permission notice and warranty disclaimer appear in supporting \r
+  documentation, and that the name of the author not be used in \r
+  advertising or publicity pertaining to distribution of the \r
   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r
@@ -65,11 +65,6 @@ bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_Device_t* const MIDIInter
        return true;\r
 }\r
 \r
-void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)\r
-{\r
-\r
-}\r
-\r
 uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo, MIDI_EventPacket_t* const Event)\r
 {\r
        if (USB_DeviceState != DEVICE_STATE_Configured)\r
@@ -84,12 +79,33 @@ uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInter
                if ((ErrorCode = Endpoint_Write_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NO_STREAM_CALLBACK)) != ENDPOINT_RWSTREAM_NoError)\r
                  return ErrorCode;\r
 \r
-               Endpoint_ClearIN();\r
+               if (!(Endpoint_IsReadWriteAllowed()))\r
+                 Endpoint_ClearIN();\r
        }\r
        \r
        return ENDPOINT_RWSTREAM_NoError;\r
 }\r
 \r
+uint8_t MIDI_Device_Flush(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)\r
+{\r
+       if (USB_DeviceState != DEVICE_STATE_Configured)\r
+         return ENDPOINT_RWSTREAM_DeviceDisconnected;\r
+       \r
+       uint8_t ErrorCode;\r
+\r
+       Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.DataINEndpointNumber);\r
+\r
+       if (Endpoint_BytesInEndpoint())\r
+       {\r
+               Endpoint_ClearIN();\r
+\r
+               if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)\r
+                 return ErrorCode;\r
+       }\r
+\r
+       return ENDPOINT_READYWAIT_NoError;\r
+}\r
+\r
 bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo, MIDI_EventPacket_t* const Event)\r
 {\r
        if (USB_DeviceState != DEVICE_STATE_Configured)\r
@@ -101,7 +117,9 @@ bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInter
          return false;\r
 \r
        Endpoint_Read_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NO_STREAM_CALLBACK);\r
-       Endpoint_ClearOUT();\r
+       \r
+       if (!(Endpoint_IsReadWriteAllowed()))\r
+         Endpoint_ClearOUT();\r
        \r
        return true;\r
 }\r