LUFA/Drivers/USB/Core/EndpointStream.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  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                                 uint16_t* const BytesProcessed)
  41 {
  42         uint8_t  ErrorCode;
  43         uint16_t BytesInTransfer = 0;
  44
  45         if ((ErrorCode = Endpoint_WaitUntilReady()))
  46           return ErrorCode;
  47
  48         if (BytesProcessed != NULL)
  49           Length -= *BytesProcessed;
  50
  51         while (Length)
  52         {
  53                 if (!(Endpoint_IsReadWriteAllowed()))
  54                 {
  55                         Endpoint_ClearOUT();
  56
  57                         if (BytesProcessed != NULL)
  58                         {
  59                                 *BytesProcessed += BytesInTransfer;
  60                                 return ENDPOINT_RWSTREAM_IncompleteTransfer;
  61                         }
  62
  63                         if ((ErrorCode = Endpoint_WaitUntilReady()))
  64                           return ErrorCode;
  65                 }
  66                 else
  67                 {
  68                         Endpoint_Discard_8();
  69
  70                         Length--;
  71                         BytesInTransfer++;
  72                 }
  73         }
  74
  75         return ENDPOINT_RWSTREAM_NoError;
  76 }
  77
  78 uint8_t Endpoint_Null_Stream(uint16_t Length,
  79                              uint16_t* const BytesProcessed)
  80 {
  81         uint8_t  ErrorCode;
  82         uint16_t BytesInTransfer = 0;
  83
  84         if ((ErrorCode = Endpoint_WaitUntilReady()))
  85           return ErrorCode;
  86
  87         if (BytesProcessed != NULL)
  88           Length -= *BytesProcessed;
  89
  90         while (Length)
  91         {
  92                 if (!(Endpoint_IsReadWriteAllowed()))
  93                 {
  94                         Endpoint_ClearIN();
  95
  96                         if (BytesProcessed != NULL)
  97                         {
  98                                 *BytesProcessed += BytesInTransfer;
  99                                 return ENDPOINT_RWSTREAM_IncompleteTransfer;
 100                         }
 101
 102                         if ((ErrorCode = Endpoint_WaitUntilReady()))
 103                           return ErrorCode;
 104                 }
 105                 else
 106                 {
 107                         Endpoint_Write_8(0);
 108
 109                         Length--;
 110                         BytesInTransfer++;
 111                 }
 112         }
 113
 114         return ENDPOINT_RWSTREAM_NoError;
 115 }
 116
 117 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Stream_LE
 118 #define  TEMPLATE_BUFFER_TYPE                      const void*
 119 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 120 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 121 #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr += Amount
 122 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(*BufferPtr)
 123 #include "Template/Template_Endpoint_RW.c"
 124
 125 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Stream_BE
 126 #define  TEMPLATE_BUFFER_TYPE                      const void*
 127 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 128 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 129 #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr -= Amount
 130 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(*BufferPtr)
 131 #include "Template/Template_Endpoint_RW.c"
 132
 133 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Stream_LE
 134 #define  TEMPLATE_BUFFER_TYPE                      void*
 135 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearOUT()
 136 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 137 #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr += Amount
 138 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *BufferPtr = Endpoint_Read_8()
 139 #include "Template/Template_Endpoint_RW.c"
 140
 141 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Stream_BE
 142 #define  TEMPLATE_BUFFER_TYPE                      void*
 143 #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearOUT()
 144 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 145 #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr -= Amount
 146 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *BufferPtr = Endpoint_Read_8()
 147 #include "Template/Template_Endpoint_RW.c"
 148
 149 #if defined(ARCH_HAS_FLASH_ADDRESS_SPACE)
 150         #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_PStream_LE
 151         #define  TEMPLATE_BUFFER_TYPE                      const void*
 152         #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 153         #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 154         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr += Amount
 155         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(pgm_read_byte(BufferPtr))
 156         #include "Template/Template_Endpoint_RW.c"
 157
 158         #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_PStream_BE
 159         #define  TEMPLATE_BUFFER_TYPE                      const void*
 160         #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 161         #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 162         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr -= Amount
 163         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(pgm_read_byte(BufferPtr))
 164         #include "Template/Template_Endpoint_RW.c"
 165 #endif
 166
 167 #if defined(ARCH_HAS_EEPROM_ADDRESS_SPACE)
 168         #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_EStream_LE
 169         #define  TEMPLATE_BUFFER_TYPE                      const void*
 170         #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 171         #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 172         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr += Amount
 173         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(eeprom_read_byte(BufferPtr))
 174         #include "Template/Template_Endpoint_RW.c"
 175
 176         #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_EStream_BE
 177         #define  TEMPLATE_BUFFER_TYPE                      const void*
 178         #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearIN()
 179         #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 180         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr -= Amount
 181         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(eeprom_read_byte(BufferPtr))
 182         #include "Template/Template_Endpoint_RW.c"
 183
 184         #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_EStream_LE
 185         #define  TEMPLATE_BUFFER_TYPE                      void*
 186         #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearOUT()
 187         #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 188         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr += Amount
 189         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         eeprom_update_byte(BufferPtr, Endpoint_Read_8())
 190         #include "Template/Template_Endpoint_RW.c"
 191
 192         #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_EStream_BE
 193         #define  TEMPLATE_BUFFER_TYPE                      void*
 194         #define  TEMPLATE_CLEAR_ENDPOINT()                 Endpoint_ClearOUT()
 195         #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 196         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr -= Amount
 197         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         eeprom_update_byte(BufferPtr, Endpoint_Read_8())
 198         #include "Template/Template_Endpoint_RW.c"
 199 #endif
 200
 201 #endif
 202
 203 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_Stream_LE
 204 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 205 #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr += Amount
 206 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(*BufferPtr)
 207 #include "Template/Template_Endpoint_Control_W.c"
 208
 209 #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_Stream_BE
 210 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 211 #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr -= Amount
 212 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(*BufferPtr)
 213 #include "Template/Template_Endpoint_Control_W.c"
 214
 215 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Control_Stream_LE
 216 #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 217 #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr += Amount
 218 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *BufferPtr = Endpoint_Read_8()
 219 #include "Template/Template_Endpoint_Control_R.c"
 220
 221 #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Control_Stream_BE
 222 #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 223 #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr -= Amount
 224 #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *BufferPtr = Endpoint_Read_8()
 225 #include "Template/Template_Endpoint_Control_R.c"
 226
 227 #if defined(ARCH_HAS_FLASH_ADDRESS_SPACE)
 228         #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_PStream_LE
 229         #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 230         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr += Amount
 231         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(pgm_read_byte(BufferPtr))
 232         #include "Template/Template_Endpoint_Control_W.c"
 233
 234         #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_PStream_BE
 235         #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 236         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr -= Amount
 237         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(pgm_read_byte(BufferPtr))
 238         #include "Template/Template_Endpoint_Control_W.c"
 239 #endif
 240
 241 #if defined(ARCH_HAS_EEPROM_ADDRESS_SPACE)
 242         #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_EStream_LE
 243         #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 244         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr += Amount
 245         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(eeprom_read_byte(BufferPtr))
 246         #include "Template/Template_Endpoint_Control_W.c"
 247
 248         #define  TEMPLATE_FUNC_NAME                        Endpoint_Write_Control_EStream_BE
 249         #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 250         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr -= Amount
 251         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Endpoint_Write_8(eeprom_read_byte(BufferPtr))
 252         #include "Template/Template_Endpoint_Control_W.c"
 253
 254         #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Control_EStream_LE
 255         #define  TEMPLATE_BUFFER_OFFSET(Length)            0
 256         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr += Amount
 257         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         eeprom_update_byte(BufferPtr, Endpoint_Read_8())
 258         #include "Template/Template_Endpoint_Control_R.c"
 259
 260         #define  TEMPLATE_FUNC_NAME                        Endpoint_Read_Control_EStream_BE
 261         #define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
 262         #define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   BufferPtr -= Amount
 263         #define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         eeprom_update_byte(BufferPtr, Endpoint_Read_8())
 264         #include "Template/Template_Endpoint_Control_R.c"
 265 #endif
 266
 267 #endif