Squashed 'lib/lufa/' content from commit 385d40300

git-subtree-dir: lib/lufa
git-subtree-split: 385d4030035dbaf41591309dbde47653bd03841b

1 files changed, 221 insertions, 0 deletions

diff --git a/LUFA/Drivers/USB/Core/AVR8/PipeStream_AVR8.c b/LUFA/Drivers/USB/Core/AVR8/PipeStream_AVR8.c
new file mode 100644
index 0000000000..7b17d45d4f
--- /dev/null
+++ b/LUFA/Drivers/USB/Core/AVR8/PipeStream_AVR8.c
@@ -0,0 +1,221 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+#include "../../../../Common/Common.h"
+#if (ARCH == ARCH_AVR8)
+
+#define  __INCLUDE_FROM_USB_DRIVER
+#include "../USBMode.h"
+
+#if defined(USB_CAN_BE_HOST)
+
+#include "PipeStream_AVR8.h"
+
+uint8_t Pipe_Discard_Stream(uint16_t Length,
+                            uint16_t* const BytesProcessed)
+{
+	uint8_t  ErrorCode;
+	uint16_t BytesInTransfer = 0;
+
+	Pipe_SetPipeToken(PIPE_TOKEN_IN);
+
+	if ((ErrorCode = Pipe_WaitUntilReady()))
+	  return ErrorCode;
+
+	if (BytesProcessed != NULL)
+	  Length -= *BytesProcessed;
+
+	while (Length)
+	{
+		if (!(Pipe_IsReadWriteAllowed()))
+		{
+			Pipe_ClearIN();
+
+			if (BytesProcessed != NULL)
+			{
+				*BytesProcessed += BytesInTransfer;
+				return PIPE_RWSTREAM_IncompleteTransfer;
+			}
+
+			if ((ErrorCode = Pipe_WaitUntilReady()))
+			  return ErrorCode;
+		}
+		else
+		{
+			Pipe_Discard_8();
+
+			Length--;
+			BytesInTransfer++;
+		}
+	}
+
+	return PIPE_RWSTREAM_NoError;
+}
+
+uint8_t Pipe_Null_Stream(uint16_t Length,
+                         uint16_t* const BytesProcessed)
+{
+	uint8_t  ErrorCode;
+	uint16_t BytesInTransfer = 0;
+
+	Pipe_SetPipeToken(PIPE_TOKEN_OUT);
+
+	if ((ErrorCode = Pipe_WaitUntilReady()))
+	  return ErrorCode;
+
+	if (BytesProcessed != NULL)
+	  Length -= *BytesProcessed;
+
+	while (Length)
+	{
+		if (!(Pipe_IsReadWriteAllowed()))
+		{
+			Pipe_ClearOUT();
+
+			if (BytesProcessed != NULL)
+			{
+				*BytesProcessed += BytesInTransfer;
+				return PIPE_RWSTREAM_IncompleteTransfer;
+			}
+
+			USB_USBTask();
+
+			if ((ErrorCode = Pipe_WaitUntilReady()))
+			  return ErrorCode;
+		}
+		else
+		{
+			Pipe_Write_8(0);
+
+			Length--;
+			BytesInTransfer++;
+		}
+	}
+
+	return PIPE_RWSTREAM_NoError;
+}
+
+/* The following abuses the C preprocessor in order to copy-paste common code with slight alterations,
+ * so that the code needs to be written once. It is a crude form of templating to reduce code maintenance. */
+
+#define  TEMPLATE_FUNC_NAME                        Pipe_Write_Stream_LE
+#define  TEMPLATE_BUFFER_TYPE                      const void*
+#define  TEMPLATE_TOKEN                            PIPE_TOKEN_OUT
+#define  TEMPLATE_CLEAR_PIPE()                     Pipe_ClearOUT()
+#define  TEMPLATE_BUFFER_OFFSET(Length)            0
+#define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   DataStream += Amount
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Pipe_Write_8(*BufferPtr)
+#include "Template/Template_Pipe_RW.c"
+
+#define  TEMPLATE_FUNC_NAME                        Pipe_Write_Stream_BE
+#define  TEMPLATE_BUFFER_TYPE                      const void*
+#define  TEMPLATE_TOKEN                            PIPE_TOKEN_OUT
+#define  TEMPLATE_CLEAR_PIPE()                     Pipe_ClearOUT()
+#define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
+#define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   DataStream -= Amount
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Pipe_Write_8(*BufferPtr)
+#include "Template/Template_Pipe_RW.c"
+
+#define  TEMPLATE_FUNC_NAME                        Pipe_Read_Stream_LE
+#define  TEMPLATE_BUFFER_TYPE                      void*
+#define  TEMPLATE_TOKEN                            PIPE_TOKEN_IN
+#define  TEMPLATE_CLEAR_PIPE()                     Pipe_ClearIN()
+#define  TEMPLATE_BUFFER_OFFSET(Length)            0
+#define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   DataStream += Amount
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *BufferPtr = Pipe_Read_8()
+#include "Template/Template_Pipe_RW.c"
+
+#define  TEMPLATE_FUNC_NAME                        Pipe_Read_Stream_BE
+#define  TEMPLATE_BUFFER_TYPE                      void*
+#define  TEMPLATE_TOKEN                            PIPE_TOKEN_IN
+#define  TEMPLATE_CLEAR_PIPE()                     Pipe_ClearIN()
+#define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
+#define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   DataStream -= Amount
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         *BufferPtr = Pipe_Read_8()
+#include "Template/Template_Pipe_RW.c"
+
+#define  TEMPLATE_FUNC_NAME                        Pipe_Write_PStream_LE
+#define  TEMPLATE_BUFFER_TYPE                      const void*
+#define  TEMPLATE_TOKEN                            PIPE_TOKEN_OUT
+#define  TEMPLATE_CLEAR_PIPE()                     Pipe_ClearOUT()
+#define  TEMPLATE_BUFFER_OFFSET(Length)            0
+#define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   DataStream += Amount
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Pipe_Write_8(pgm_read_byte(BufferPtr))
+#include "Template/Template_Pipe_RW.c"
+
+#define  TEMPLATE_FUNC_NAME                        Pipe_Write_PStream_BE
+#define  TEMPLATE_BUFFER_TYPE                      const void*
+#define  TEMPLATE_TOKEN                            PIPE_TOKEN_OUT
+#define  TEMPLATE_CLEAR_PIPE()                     Pipe_ClearOUT()
+#define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
+#define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   DataStream -= Amount
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Pipe_Write_8(pgm_read_byte(BufferPtr))
+#include "Template/Template_Pipe_RW.c"
+
+#define  TEMPLATE_FUNC_NAME                        Pipe_Write_EStream_LE
+#define  TEMPLATE_BUFFER_TYPE                      const void*
+#define  TEMPLATE_TOKEN                            PIPE_TOKEN_OUT
+#define  TEMPLATE_CLEAR_PIPE()                     Pipe_ClearOUT()
+#define  TEMPLATE_BUFFER_OFFSET(Length)            0
+#define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   DataStream += Amount
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Pipe_Write_8(eeprom_read_byte(BufferPtr))
+#include "Template/Template_Pipe_RW.c"
+
+#define  TEMPLATE_FUNC_NAME                        Pipe_Write_EStream_BE
+#define  TEMPLATE_BUFFER_TYPE                      const void*
+#define  TEMPLATE_TOKEN                            PIPE_TOKEN_OUT
+#define  TEMPLATE_CLEAR_PIPE()                     Pipe_ClearOUT()
+#define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
+#define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   DataStream -= Amount
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         Pipe_Write_8(eeprom_read_byte(BufferPtr))
+#include "Template/Template_Pipe_RW.c"
+
+#define  TEMPLATE_FUNC_NAME                        Pipe_Read_EStream_LE
+#define  TEMPLATE_BUFFER_TYPE                      void*
+#define  TEMPLATE_TOKEN                            PIPE_TOKEN_IN
+#define  TEMPLATE_CLEAR_PIPE()                     Pipe_ClearIN()
+#define  TEMPLATE_BUFFER_OFFSET(Length)            0
+#define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   DataStream += Amount
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         eeprom_update_byte(BufferPtr, Pipe_Read_8())
+#include "Template/Template_Pipe_RW.c"
+
+#define  TEMPLATE_FUNC_NAME                        Pipe_Read_EStream_BE
+#define  TEMPLATE_BUFFER_TYPE                      void*
+#define  TEMPLATE_TOKEN                            PIPE_TOKEN_IN
+#define  TEMPLATE_CLEAR_PIPE()                     Pipe_ClearIN()
+#define  TEMPLATE_BUFFER_OFFSET(Length)            (Length - 1)
+#define  TEMPLATE_BUFFER_MOVE(BufferPtr, Amount)   DataStream -= Amount
+#define  TEMPLATE_TRANSFER_BYTE(BufferPtr)         eeprom_update_byte(BufferPtr, Pipe_Read_8())
+#include "Template/Template_Pipe_RW.c"
+
+#endif
+
+#endif
+