LUFA/Drivers/USB/Class/Device/MIDI.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 #include "../../HighLevel/USBMode.h"
  32 #if defined(USB_CAN_BE_DEVICE)
  33
  34 #include "MIDI.h"
  35
  36 void MIDI_Device_ProcessControlRequest(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)
  37 {
  38
  39 }
  40
  41 bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)
  42 {
  43         memset(&MIDIInterfaceInfo->State, 0x00, sizeof(MIDIInterfaceInfo->State));
  44
  45         if (MIDIInterfaceInfo->Config.DataINEndpointNumber)
  46         {
  47                 if (!(Endpoint_ConfigureEndpoint(MIDIInterfaceInfo->Config.DataINEndpointNumber, EP_TYPE_BULK,
  48                                                                                  ENDPOINT_DIR_IN, MIDIInterfaceInfo->Config.DataINEndpointSize,
  49                                                                                  MIDIInterfaceInfo->Config.DataINEndpointDoubleBank ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
  50                 {
  51                         return false;
  52                 }
  53         }
  54
  55         if (MIDIInterfaceInfo->Config.DataOUTEndpointNumber)
  56         {
  57                 if (!(Endpoint_ConfigureEndpoint(MIDIInterfaceInfo->Config.DataOUTEndpointNumber, EP_TYPE_BULK,
  58                                                                                  ENDPOINT_DIR_OUT, MIDIInterfaceInfo->Config.DataOUTEndpointSize,
  59                                                                                  MIDIInterfaceInfo->Config.DataOUTEndpointDoubleBank ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
  60                 {
  61                         return false;
  62                 }
  63         }
  64
  65         return true;
  66 }
  67
  68 uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo, MIDI_EventPacket_t* const Event)
  69 {
  70         if (USB_DeviceState != DEVICE_STATE_Configured)
  71           return ENDPOINT_RWSTREAM_DeviceDisconnected;
  72
  73         Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.DataINEndpointNumber);
  74
  75         if (Endpoint_IsReadWriteAllowed());
  76         {
  77                 uint8_t ErrorCode;
  78
  79                 if ((ErrorCode = Endpoint_Write_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NO_STREAM_CALLBACK)) != ENDPOINT_RWSTREAM_NoError)
  80                   return ErrorCode;
  81
  82                 if (!(Endpoint_IsReadWriteAllowed()))
  83                   Endpoint_ClearIN();
  84         }
  85
  86         return ENDPOINT_RWSTREAM_NoError;
  87 }
  88
  89 uint8_t MIDI_Device_Flush(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)
  90 {
  91         if (USB_DeviceState != DEVICE_STATE_Configured)
  92           return ENDPOINT_RWSTREAM_DeviceDisconnected;
  93
  94         uint8_t ErrorCode;
  95
  96         Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.DataINEndpointNumber);
  97
  98         if (Endpoint_BytesInEndpoint())
  99         {
 100                 Endpoint_ClearIN();
 101
 102                 if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)
 103                   return ErrorCode;
 104         }
 105
 106         return ENDPOINT_READYWAIT_NoError;
 107 }
 108
 109 bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo, MIDI_EventPacket_t* const Event)
 110 {
 111         if (USB_DeviceState != DEVICE_STATE_Configured)
 112           return false;
 113
 114         Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.DataOUTEndpointNumber);
 115
 116         if (!(Endpoint_IsReadWriteAllowed()))
 117           return false;
 118
 119         Endpoint_Read_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NO_STREAM_CALLBACK);
 120
 121         if (!(Endpoint_IsReadWriteAllowed()))
 122           Endpoint_ClearOUT();
 123
 124         return true;
 125 }
 126
 127 #endif