LUFA/Drivers/USB/HighLevel/EndpointStream.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   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 #define  __INCLUDE_FROM_USB_DRIVER
  32 #include "USBMode.h"
  33
  34 #if defined(USB_CAN_BE_DEVICE)
  35
  36 #include "EndpointStream.h"
  37
  38 #if !defined(CONTROL_ONLY_DEVICE)
  39 uint8_t Endpoint_Discard_Stream(uint16_t Length
  40                                 __CALLBACK_PARAM)
  41 {
  42         uint8_t ErrorCode;
  43
  44         if ((ErrorCode = Endpoint_WaitUntilReady()))
  45           return ErrorCode;
  46
  47         #if defined(FAST_STREAM_TRANSFERS)
  48         uint8_t BytesRemToAlignment = (Endpoint_BytesInEndpoint() & 0x07);
  49
  50         if (Length >= 8)
  51         {
  52                 Length -= BytesRemToAlignment;
  53
  54                 switch (BytesRemToAlignment)
  55                 {
  56                         default:
  57                                 do
  58                                 {
  59                                         if (!(Endpoint_IsReadWriteAllowed()))
  60                                         {
  61                                                 Endpoint_ClearOUT();
  62
  63                                                 #if !defined(NO_STREAM_CALLBACKS)
  64                                                 if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
  65                                                   return ENDPOINT_RWSTREAM_CallbackAborted;
  66                                                 #endif
  67
  68                                                 if ((ErrorCode = Endpoint_WaitUntilReady()))
  69                                                   return ErrorCode;
  70                                         }
  71
  72                                         Length -= 8;
  73
  74                                         Endpoint_Discard_Byte();
  75                         case 7: Endpoint_Discard_Byte();
  76                         case 6: Endpoint_Discard_Byte();
  77                         case 5: Endpoint_Discard_Byte();
  78                         case 4: Endpoint_Discard_Byte();
  79                         case 3: Endpoint_Discard_Byte();
  80                         case 2: Endpoint_Discard_Byte();
  81                         case 1: Endpoint_Discard_Byte();
  82                                 } while (Length >= 8);
  83                 }
  84         }
  85         #endif
  86
  87         while (Length)
  88         {
  89                 if (!(Endpoint_IsReadWriteAllowed()))
  90                 {
  91                         Endpoint_ClearOUT();
  92
  93                         #if !defined(NO_STREAM_CALLBACKS)
  94                         if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
  95                           return ENDPOINT_RWSTREAM_CallbackAborted;
  96                         #endif
  97
  98                         if ((ErrorCode = Endpoint_WaitUntilReady()))
  99                           return ErrorCode;
 100                 }
 101                 else
 102                 {
 103                         Endpoint_Discard_Byte();
 104                         Length--;
 105                 }
 106         }
 107
 108         return ENDPOINT_RWSTREAM_NoError;
 109 }
 110
 111 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Stream_LE
 112 #define  TEMPLATE_BUFFER_TYPE                      const void*
 113 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 114 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 115 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(*((uint8_t*)BufferPtr++))
 116 #include "Template/Template_Endpoint_RW.c"
 117
 118 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_PStream_LE
 119 #define  TEMPLATE_BUFFER_TYPE                      const void*
 120 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 121 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 122 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(pgm_read_byte((uint8_t*)BufferPtr++))
 123 #include "Template/Template_Endpoint_RW.c"
 124
 125 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_EStream_LE
 126 #define  TEMPLATE_BUFFER_TYPE                      const void*
 127 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 128 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 129 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(eeprom_read_byte((uint8_t*)BufferPtr++))
 130 #include "Template/Template_Endpoint_RW.c"
 131
 132 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Stream_BE
 133 #define  TEMPLATE_BUFFER_TYPE                      const void*
 134 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 135 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 136 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(*((uint8_t*)BufferPtr--))
 137 #include "Template/Template_Endpoint_RW.c"
 138
 139 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_EStream_BE
 140 #define  TEMPLATE_BUFFER_TYPE                      const void*
 141 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 142 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 143 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(eeprom_read_byte((uint8_t*)BufferPtr--))
 144 #include "Template/Template_Endpoint_RW.c"
 145
 146 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_PStream_BE
 147 #define  TEMPLATE_BUFFER_TYPE                      const void*
 148 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 149 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 150 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(pgm_read_byte((uint8_t*)BufferPtr--))
 151 #include "Template/Template_Endpoint_RW.c"
 152
 153 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Stream_LE
 154 #define  TEMPLATE_BUFFER_TYPE                      void*
 155 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearOUT()
 156 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 157 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *((uint8_t*)BufferPtr++) = Endpoint_Read_Byte()
 158 #include "Template/Template_Endpoint_RW.c"
 159
 160 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_EStream_LE
 161 #define  TEMPLATE_BUFFER_TYPE                      void*
 162 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearOUT()
 163 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 164 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         eeprom_update_byte((uint8_t*)BufferPtr++, Endpoint_Read_Byte())
 165 #include "Template/Template_Endpoint_RW.c"
 166
 167 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Stream_BE
 168 #define  TEMPLATE_BUFFER_TYPE                      void*
 169 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearOUT()
 170 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 171 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *((uint8_t*)BufferPtr--) = Endpoint_Read_Byte()
 172 #include "Template/Template_Endpoint_RW.c"
 173
 174 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_EStream_BE
 175 #define  TEMPLATE_BUFFER_TYPE                      void*
 176 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearOUT()
 177 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 178 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         eeprom_update_byte((uint8_t*)BufferPtr--, Endpoint_Read_Byte())
 179 #include "Template/Template_Endpoint_RW.c"
 180
 181 #endif
 182
 183 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_Stream_LE
 184 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 185 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(*((uint8_t*)BufferPtr++))
 186 #include "Template/Template_Endpoint_Control_W.c"
 187
 188 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_PStream_LE
 189 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 190 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(pgm_read_byte((uint8_t*)BufferPtr++))
 191 #include "Template/Template_Endpoint_Control_W.c"
 192
 193 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_EStream_LE
 194 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 195 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(eeprom_read_byte((uint8_t*)BufferPtr++))
 196 #include "Template/Template_Endpoint_Control_W.c"
 197
 198 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_Stream_BE
 199 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 200 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(*((uint8_t*)BufferPtr--))
 201 #include "Template/Template_Endpoint_Control_W.c"
 202
 203 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_PStream_BE
 204 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 205 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(pgm_read_byte((uint8_t*)BufferPtr--))
 206 #include "Template/Template_Endpoint_Control_W.c"
 207
 208 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_EStream_BE
 209 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 210 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_Byte(eeprom_read_byte((uint8_t*)BufferPtr--))
 211 #include "Template/Template_Endpoint_Control_W.c"
 212
 213 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Control_Stream_LE
 214 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 215 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *((uint8_t*)BufferPtr++) = Endpoint_Read_Byte()
 216 #include "Template/Template_Endpoint_Control_R.c"
 217
 218 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Control_EStream_LE
 219 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 220 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         eeprom_update_byte((uint8_t*)BufferPtr++, Endpoint_Read_Byte())
 221 #include "Template/Template_Endpoint_Control_R.c"
 222
 223 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Control_Stream_BE
 224 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 225 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *((uint8_t*)BufferPtr--) = Endpoint_Read_Byte()
 226 #include "Template/Template_Endpoint_Control_R.c"
 227
 228 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Control_EStream_BE
 229 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 230 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         eeprom_update_byte((uint8_t*)BufferPtr--, Endpoint_Read_Byte())
 231 #include "Template/Template_Endpoint_Control_R.c"
 232
 233 #endif