--- /dev/null
+/*\r
+ LUFA Library\r
+ Copyright (C) Dean Camera, 2010.\r
+ \r
+ dean [at] fourwalledcubicle [dot] com\r
+ www.fourwalledcubicle.com\r
+*/\r
+\r
+/*\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
+ software, including all implied warranties of merchantability\r
+ and fitness. In no event shall the author be liable for any\r
+ special, indirect or consequential damages or any damages\r
+ whatsoever resulting from loss of use, data or profits, whether\r
+ in an action of contract, negligence or other tortious action,\r
+ arising out of or in connection with the use or performance of\r
+ this software.\r
+*/\r
+\r
+#define __INCLUDE_FROM_USB_DRIVER\r
+#include "USBMode.h"\r
+\r
+#if defined(USB_CAN_BE_HOST)\r
+\r
+#include "PipeStream.h"\r
+\r
+uint8_t Pipe_Discard_Stream(uint16_t Length\r
+ __CALLBACK_PARAM)\r
+{\r
+ uint8_t ErrorCode;\r
+ \r
+ Pipe_SetPipeToken(PIPE_TOKEN_IN);\r
+\r
+ if ((ErrorCode = Pipe_WaitUntilReady()))\r
+ return ErrorCode;\r
+\r
+ #if defined(FAST_STREAM_TRANSFERS)\r
+ uint8_t BytesRemToAlignment = (Pipe_BytesInPipe() & 0x07);\r
+\r
+ if (Length >= 8)\r
+ {\r
+ Length -= BytesRemToAlignment;\r
+\r
+ switch (BytesRemToAlignment)\r
+ {\r
+ default:\r
+ do\r
+ {\r
+ if (!(Pipe_IsReadWriteAllowed()))\r
+ {\r
+ Pipe_ClearIN();\r
+ \r
+ #if !defined(NO_STREAM_CALLBACKS)\r
+ if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))\r
+ return PIPE_RWSTREAM_CallbackAborted;\r
+ #endif\r
+\r
+ if ((ErrorCode = Pipe_WaitUntilReady()))\r
+ return ErrorCode;\r
+ }\r
+\r
+ Length -= 8;\r
+ \r
+ Pipe_Discard_Byte();\r
+ case 7: Pipe_Discard_Byte();\r
+ case 6: Pipe_Discard_Byte();\r
+ case 5: Pipe_Discard_Byte();\r
+ case 4: Pipe_Discard_Byte();\r
+ case 3: Pipe_Discard_Byte();\r
+ case 2: Pipe_Discard_Byte();\r
+ case 1: Pipe_Discard_Byte();\r
+ } while (Length >= 8); \r
+ }\r
+ }\r
+ #endif\r
+\r
+ while (Length)\r
+ {\r
+ if (!(Pipe_IsReadWriteAllowed()))\r
+ {\r
+ Pipe_ClearIN();\r
+ \r
+ #if !defined(NO_STREAM_CALLBACKS)\r
+ if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))\r
+ return PIPE_RWSTREAM_CallbackAborted;\r
+ #endif\r
+\r
+ if ((ErrorCode = Pipe_WaitUntilReady()))\r
+ return ErrorCode;\r
+ }\r
+ else\r
+ {\r
+ Pipe_Discard_Byte();\r
+ Length--;\r
+ }\r
+ }\r
+\r
+ return PIPE_RWSTREAM_NoError;\r
+}\r
+\r
+/* The following abuses the C preprocessor in order to copy-past common code with slight alterations,\r
+ * so that the code needs to be written once. It is a crude form of templating to reduce code maintenance. */\r
+\r
+#define TEMPLATE_FUNC_NAME Pipe_Write_Stream_LE\r
+#define TEMPLATE_BUFFER_TYPE const void*\r
+#define TEMPLATE_TOKEN PIPE_TOKEN_OUT\r
+#define TEMPLATE_CLEAR_PIPE() Pipe_ClearOUT()\r
+#define TEMPLATE_BUFFER_OFFSET(Length) 0\r
+#define TEMPLATE_TRANSFER_BYTE(BufferPtr) Pipe_Write_Byte(*((uint8_t*)BufferPtr++))\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#define TEMPLATE_FUNC_NAME Pipe_Write_PStream_LE\r
+#define TEMPLATE_BUFFER_TYPE const void*\r
+#define TEMPLATE_TOKEN PIPE_TOKEN_OUT\r
+#define TEMPLATE_CLEAR_PIPE() Pipe_ClearOUT()\r
+#define TEMPLATE_BUFFER_OFFSET(Length) 0\r
+#define TEMPLATE_TRANSFER_BYTE(BufferPtr) Pipe_Write_Byte(pgm_read_byte((uint8_t*)BufferPtr++))\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#define TEMPLATE_FUNC_NAME Pipe_Write_EStream_LE\r
+#define TEMPLATE_BUFFER_TYPE const void*\r
+#define TEMPLATE_TOKEN PIPE_TOKEN_OUT\r
+#define TEMPLATE_CLEAR_PIPE() Pipe_ClearOUT()\r
+#define TEMPLATE_BUFFER_OFFSET(Length) 0\r
+#define TEMPLATE_TRANSFER_BYTE(BufferPtr) Pipe_Write_Byte(eeprom_read_byte((uint8_t*)BufferPtr++))\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#define TEMPLATE_FUNC_NAME Pipe_Write_Stream_BE\r
+#define TEMPLATE_BUFFER_TYPE const void*\r
+#define TEMPLATE_TOKEN PIPE_TOKEN_OUT\r
+#define TEMPLATE_CLEAR_PIPE() Pipe_ClearOUT()\r
+#define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1)\r
+#define TEMPLATE_TRANSFER_BYTE(BufferPtr) Pipe_Write_Byte(*((uint8_t*)BufferPtr--))\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#define TEMPLATE_FUNC_NAME Pipe_Write_PStream_BE\r
+#define TEMPLATE_BUFFER_TYPE const void*\r
+#define TEMPLATE_TOKEN PIPE_TOKEN_OUT\r
+#define TEMPLATE_CLEAR_PIPE() Pipe_ClearOUT()\r
+#define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1)\r
+#define TEMPLATE_TRANSFER_BYTE(BufferPtr) Pipe_Write_Byte(pgm_read_byte((uint8_t*)BufferPtr--))\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#define TEMPLATE_FUNC_NAME Pipe_Write_EStream_BE\r
+#define TEMPLATE_BUFFER_TYPE const void*\r
+#define TEMPLATE_TOKEN PIPE_TOKEN_OUT\r
+#define TEMPLATE_CLEAR_PIPE() Pipe_ClearOUT()\r
+#define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1)\r
+#define TEMPLATE_TRANSFER_BYTE(BufferPtr) Pipe_Write_Byte(eeprom_read_byte((uint8_t*)BufferPtr--))\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#define TEMPLATE_FUNC_NAME Pipe_Read_Stream_LE\r
+#define TEMPLATE_BUFFER_TYPE void*\r
+#define TEMPLATE_TOKEN PIPE_TOKEN_IN\r
+#define TEMPLATE_CLEAR_PIPE() Pipe_ClearIN()\r
+#define TEMPLATE_BUFFER_OFFSET(Length) 0\r
+#define TEMPLATE_TRANSFER_BYTE(BufferPtr) *((uint8_t*)BufferPtr++) = Pipe_Read_Byte()\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#define TEMPLATE_FUNC_NAME Pipe_Read_EStream_LE\r
+#define TEMPLATE_BUFFER_TYPE void*\r
+#define TEMPLATE_TOKEN PIPE_TOKEN_IN\r
+#define TEMPLATE_CLEAR_PIPE() Pipe_ClearIN()\r
+#define TEMPLATE_BUFFER_OFFSET(Length) 0\r
+#define TEMPLATE_TRANSFER_BYTE(BufferPtr) eeprom_update_byte((uint8_t*)BufferPtr++, Pipe_Read_Byte())\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#define TEMPLATE_FUNC_NAME Pipe_Read_Stream_BE\r
+#define TEMPLATE_BUFFER_TYPE void*\r
+#define TEMPLATE_TOKEN PIPE_TOKEN_IN\r
+#define TEMPLATE_CLEAR_PIPE() Pipe_ClearIN()\r
+#define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1)\r
+#define TEMPLATE_TRANSFER_BYTE(BufferPtr) *((uint8_t*)BufferPtr--) = Pipe_Read_Byte()\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#define TEMPLATE_FUNC_NAME Pipe_Read_EStream_BE\r
+#define TEMPLATE_BUFFER_TYPE void*\r
+#define TEMPLATE_TOKEN PIPE_TOKEN_IN\r
+#define TEMPLATE_CLEAR_PIPE() Pipe_ClearIN()\r
+#define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1)\r
+#define TEMPLATE_TRANSFER_BYTE(BufferPtr) eeprom_update_byte((uint8_t*)BufferPtr--, Pipe_Read_Byte())\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#endif\r
projects / pub / lufa.git / blobdiff