Copy out the EndpointStream and PipeStream functions to each architecture, so that...

[pub/lufa.git] / LUFA / Drivers / USB / Core / UC3 / PipeStream_UC3.c

diff --git a/LUFA/Drivers/USB/Core/UC3/PipeStream_UC3.c b/LUFA/Drivers/USB/Core/UC3/PipeStream_UC3.c
new file mode 100644 (file)
index 0000000..3aa815c
--- /dev/null
+++ b/LUFA/Drivers/USB/Core/UC3/PipeStream_UC3.c
@@ -0,0 +1,162 @@
+/*\r
+             LUFA Library\r
+     Copyright (C) Dean Camera, 2011.\r
+              \r
+  dean [at] fourwalledcubicle [dot] com\r
+           www.lufa-lib.org\r
+*/\r
+\r
+/*\r
+  Copyright 2011  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_UC3.h"\r
+\r
+uint8_t Pipe_Discard_Stream(uint16_t Length,\r
+                            uint16_t* const BytesProcessed)\r
+{\r
+       uint8_t  ErrorCode;\r
+       uint16_t BytesInTransfer = 0;\r
+       \r
+       Pipe_SetPipeToken(PIPE_TOKEN_IN);\r
+\r
+       if ((ErrorCode = Pipe_WaitUntilReady()))\r
+         return ErrorCode;\r
+\r
+       if (BytesProcessed != NULL)\r
+         Length -= *BytesProcessed;\r
+\r
+       while (Length)\r
+       {\r
+               if (!(Pipe_IsReadWriteAllowed()))\r
+               {\r
+                       Pipe_ClearIN();\r
+                               \r
+                       if (BytesProcessed != NULL)\r
+                       {\r
+                               *BytesProcessed += BytesInTransfer;\r
+                               return PIPE_RWSTREAM_IncompleteTransfer;\r
+                       }\r
+\r
+                       if ((ErrorCode = Pipe_WaitUntilReady()))\r
+                         return ErrorCode;\r
+               }\r
+               else\r
+               {\r
+                       Pipe_Discard_8();\r
+                       \r
+                       Length--;\r
+                       BytesInTransfer++;\r
+               }\r
+       }\r
+\r
+       return PIPE_RWSTREAM_NoError;\r
+}\r
+\r
+uint8_t Pipe_Null_Stream(uint16_t Length,\r
+                         uint16_t* const BytesProcessed)\r
+{\r
+       uint8_t  ErrorCode;\r
+       uint16_t BytesInTransfer = 0;\r
+       \r
+       Pipe_SetPipeToken(PIPE_TOKEN_OUT);\r
+\r
+       if ((ErrorCode = Pipe_WaitUntilReady()))\r
+         return ErrorCode;\r
+\r
+       if (BytesProcessed != NULL)\r
+         Length -= *BytesProcessed;\r
+\r
+       while (Length)\r
+       {\r
+               if (!(Pipe_IsReadWriteAllowed()))\r
+               {\r
+                       Pipe_ClearOUT();\r
+                               \r
+                       if (BytesProcessed != NULL)\r
+                       {\r
+                               *BytesProcessed += BytesInTransfer;\r
+                               return PIPE_RWSTREAM_IncompleteTransfer;\r
+                       }\r
+                       \r
+                       USB_USBTask();\r
+\r
+                       if ((ErrorCode = Pipe_WaitUntilReady()))\r
+                         return ErrorCode;\r
+               }\r
+               else\r
+               {\r
+                       Pipe_Write_8(0);\r
+                       \r
+                       Length--;\r
+                       BytesInTransfer++;\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_BUFFER_MOVE(BufferPtr, Amount)   DataStream += Amount\r
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Pipe_Write_8(*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_BUFFER_MOVE(BufferPtr, Amount)   DataStream -= Amount\r
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Pipe_Write_8(*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_BUFFER_MOVE(BufferPtr, Amount)   DataStream += Amount\r
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *BufferPtr = Pipe_Read_8()\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_BUFFER_MOVE(BufferPtr, Amount)   DataStream -= Amount\r
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *BufferPtr = Pipe_Read_8()\r
+#include "Template/Template_Pipe_RW.c"\r
+\r
+#endif\r
+