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Add missing SVN eol-style property to files where it was missing.

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Dean Camera 2011-07-15 08:46:08 +00:00
parent a36012fc4b
commit 0c2ad9eb34
105 changed files with 27742 additions and 27742 deletions
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198
LUFA/Drivers/Misc/AT45DB321C.h
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@ -1,99 +1,99 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 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 disclaim 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.
*/
/** \file
* \brief Command constants for the Atmel AT45DB321C Dataflash.
* \copydetails Group_AT45DB321C
*/
/** \ingroup Group_MiscDrivers
* \defgroup Group_AT45DB321C Atmel AT45DB321C Dataflash Commands
* \brief Command constants for the Atmel AT45DB321C Dataflash.
*
* Dataflash command constants for the Atmel AT45DB321C Dataflash IC.
*
* @{
*/
#ifndef __AT45DB321C_CMDS_H__
#define __AT45DB321C_CMDS_H__
/* Public Interface - May be used in end-application: */
/* Macros: */
/** \name Dataflash Status Values */
//@{
#define DF_STATUS_READY (1 << 7)
#define DF_STATUS_COMPMISMATCH (1 << 6)
#define DF_STATUS_SECTORPROTECTION_ON (1 << 1)
//@}
#define DF_MANUFACTURER_ATMEL 0x1F
/** \name Dataflash Commands */
//@{
#define DF_CMD_GETSTATUS 0xD7
#define DF_CMD_MAINMEMTOBUFF1 0x53
#define DF_CMD_MAINMEMTOBUFF2 0x55
#define DF_CMD_MAINMEMTOBUFF1COMP 0x60
#define DF_CMD_MAINMEMTOBUFF2COMP 0x61
#define DF_CMD_AUTOREWRITEBUFF1 0x58
#define DF_CMD_AUTOREWRITEBUFF2 0x59
#define DF_CMD_MAINMEMPAGEREAD 0xD2
#define DF_CMD_CONTARRAYREAD_LF 0xE8
#define DF_CMD_BUFF1READ_LF 0xD4
#define DF_CMD_BUFF2READ_LF 0xD6
#define DF_CMD_BUFF1WRITE 0x84
#define DF_CMD_BUFF2WRITE 0x87
#define DF_CMD_BUFF1TOMAINMEMWITHERASE 0x83
#define DF_CMD_BUFF2TOMAINMEMWITHERASE 0x86
#define DF_CMD_BUFF1TOMAINMEM 0x88
#define DF_CMD_BUFF2TOMAINMEM 0x89
#define DF_CMD_MAINMEMPAGETHROUGHBUFF1 0x82
#define DF_CMD_MAINMEMPAGETHROUGHBUFF2 0x85
#define DF_CMD_PAGEERASE 0x81
#define DF_CMD_BLOCKERASE 0x50
#define DF_CMD_SECTORPROTECTIONOFF ((char[]){0x3D, 0x2A, 0x7F, 0xCF})
#define DF_CMD_SECTORPROTECTIONOFF_BYTE1 0x3D
#define DF_CMD_SECTORPROTECTIONOFF_BYTE2 0x2A
#define DF_CMD_SECTORPROTECTIONOFF_BYTE3 0x7F
#define DF_CMD_SECTORPROTECTIONOFF_BYTE4 0xCF
#define DF_CMD_READMANUFACTURERDEVICEINFO 0x9F
//@}
#endif
/** @} */
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 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 disclaim 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.
*/
/** \file
* \brief Command constants for the Atmel AT45DB321C Dataflash.
* \copydetails Group_AT45DB321C
*/
/** \ingroup Group_MiscDrivers
* \defgroup Group_AT45DB321C Atmel AT45DB321C Dataflash Commands
* \brief Command constants for the Atmel AT45DB321C Dataflash.
*
* Dataflash command constants for the Atmel AT45DB321C Dataflash IC.
*
* @{
*/
#ifndef __AT45DB321C_CMDS_H__
#define __AT45DB321C_CMDS_H__
/* Public Interface - May be used in end-application: */
/* Macros: */
/** \name Dataflash Status Values */
//@{
#define DF_STATUS_READY (1 << 7)
#define DF_STATUS_COMPMISMATCH (1 << 6)
#define DF_STATUS_SECTORPROTECTION_ON (1 << 1)
//@}
#define DF_MANUFACTURER_ATMEL 0x1F
/** \name Dataflash Commands */
//@{
#define DF_CMD_GETSTATUS 0xD7
#define DF_CMD_MAINMEMTOBUFF1 0x53
#define DF_CMD_MAINMEMTOBUFF2 0x55
#define DF_CMD_MAINMEMTOBUFF1COMP 0x60
#define DF_CMD_MAINMEMTOBUFF2COMP 0x61
#define DF_CMD_AUTOREWRITEBUFF1 0x58
#define DF_CMD_AUTOREWRITEBUFF2 0x59
#define DF_CMD_MAINMEMPAGEREAD 0xD2
#define DF_CMD_CONTARRAYREAD_LF 0xE8
#define DF_CMD_BUFF1READ_LF 0xD4
#define DF_CMD_BUFF2READ_LF 0xD6
#define DF_CMD_BUFF1WRITE 0x84
#define DF_CMD_BUFF2WRITE 0x87
#define DF_CMD_BUFF1TOMAINMEMWITHERASE 0x83
#define DF_CMD_BUFF2TOMAINMEMWITHERASE 0x86
#define DF_CMD_BUFF1TOMAINMEM 0x88
#define DF_CMD_BUFF2TOMAINMEM 0x89
#define DF_CMD_MAINMEMPAGETHROUGHBUFF1 0x82
#define DF_CMD_MAINMEMPAGETHROUGHBUFF2 0x85
#define DF_CMD_PAGEERASE 0x81
#define DF_CMD_BLOCKERASE 0x50
#define DF_CMD_SECTORPROTECTIONOFF ((char[]){0x3D, 0x2A, 0x7F, 0xCF})
#define DF_CMD_SECTORPROTECTIONOFF_BYTE1 0x3D
#define DF_CMD_SECTORPROTECTIONOFF_BYTE2 0x2A
#define DF_CMD_SECTORPROTECTIONOFF_BYTE3 0x7F
#define DF_CMD_SECTORPROTECTIONOFF_BYTE4 0xCF
#define DF_CMD_READMANUFACTURERDEVICEINFO 0x9F
//@}
#endif
/** @} */

218
LUFA/Drivers/Misc/AT45DB642D.h
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@ -1,109 +1,109 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 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 disclaim 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.
*/
/** \file
* \brief Command constants for the Atmel AT45DB642D Dataflash.
* \copydetails Group_AT45DB642D
*/
/** \ingroup Group_MiscDrivers
* \defgroup Group_AT45DB642D Atmel AT45DB642D Dataflash Commands
* \brief Command constants for the Atmel AT45DB642D Dataflash.
*
* Dataflash command constants for the Atmel AT45DB642D Dataflash IC.
*
* @{
*/
#ifndef __AT45DB642D_CMDS_H__
#define __AT45DB642D_CMDS_H__
/* Public Interface - May be used in end-application: */
/* Macros: */
/** \name Dataflash Status Values */
//@{
#define DF_STATUS_READY (1 << 7)
#define DF_STATUS_COMPMISMATCH (1 << 6)
#define DF_STATUS_SECTORPROTECTION_ON (1 << 1)
#define DF_STATUS_BINARYPAGESIZE_ON (1 << 0)
//@}
#define DF_MANUFACTURER_ATMEL 0x1F
/** \name Dataflash Commands */
//@{
#define DF_CMD_GETSTATUS 0xD7
#define DF_CMD_POWERDOWN 0xB9
#define DF_CMD_WAKEUP 0xAB
#define DF_CMD_MAINMEMTOBUFF1 0x53
#define DF_CMD_MAINMEMTOBUFF2 0x55
#define DF_CMD_MAINMEMTOBUFF1COMP 0x60
#define DF_CMD_MAINMEMTOBUFF2COMP 0x61
#define DF_CMD_AUTOREWRITEBUFF1 0x58
#define DF_CMD_AUTOREWRITEBUFF2 0x59
#define DF_CMD_MAINMEMPAGEREAD 0xD2
#define DF_CMD_CONTARRAYREAD_LF 0x03
#define DF_CMD_BUFF1READ_LF 0xD1
#define DF_CMD_BUFF2READ_LF 0xD3
#define DF_CMD_BUFF1WRITE 0x84
#define DF_CMD_BUFF2WRITE 0x87
#define DF_CMD_BUFF1TOMAINMEMWITHERASE 0x83
#define DF_CMD_BUFF2TOMAINMEMWITHERASE 0x86
#define DF_CMD_BUFF1TOMAINMEM 0x88
#define DF_CMD_BUFF2TOMAINMEM 0x89
#define DF_CMD_MAINMEMPAGETHROUGHBUFF1 0x82
#define DF_CMD_MAINMEMPAGETHROUGHBUFF2 0x85
#define DF_CMD_PAGEERASE 0x81
#define DF_CMD_BLOCKERASE 0x50
#define DF_CMD_SECTORERASE 0x7C
#define DF_CMD_CHIPERASE ((char[]){0xC7, 0x94, 0x80, 0x9A})
#define DF_CMD_CHIPERASE_BYTE1 0xC7
#define DF_CMD_CHIPERASE_BYTE2 0x94
#define DF_CMD_CHIPERASE_BYTE3 0x80
#define DF_CMD_CHIPERASE_BYTE4 0x9A
#define DF_CMD_SECTORPROTECTIONOFF ((char[]){0x3D, 0x2A, 0x7F, 0x9A})
#define DF_CMD_SECTORPROTECTIONOFF_BYTE1 0x3D
#define DF_CMD_SECTORPROTECTIONOFF_BYTE2 0x2A
#define DF_CMD_SECTORPROTECTIONOFF_BYTE3 0x7F
#define DF_CMD_SECTORPROTECTIONOFF_BYTE4 0x9A
#define DF_CMD_READMANUFACTURERDEVICEINFO 0x9F
//@}
#endif
/** @} */
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 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 disclaim 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.
*/
/** \file
* \brief Command constants for the Atmel AT45DB642D Dataflash.
* \copydetails Group_AT45DB642D
*/
/** \ingroup Group_MiscDrivers
* \defgroup Group_AT45DB642D Atmel AT45DB642D Dataflash Commands
* \brief Command constants for the Atmel AT45DB642D Dataflash.
*
* Dataflash command constants for the Atmel AT45DB642D Dataflash IC.
*
* @{
*/
#ifndef __AT45DB642D_CMDS_H__
#define __AT45DB642D_CMDS_H__
/* Public Interface - May be used in end-application: */
/* Macros: */
/** \name Dataflash Status Values */
//@{
#define DF_STATUS_READY (1 << 7)
#define DF_STATUS_COMPMISMATCH (1 << 6)
#define DF_STATUS_SECTORPROTECTION_ON (1 << 1)
#define DF_STATUS_BINARYPAGESIZE_ON (1 << 0)
//@}
#define DF_MANUFACTURER_ATMEL 0x1F
/** \name Dataflash Commands */
//@{
#define DF_CMD_GETSTATUS 0xD7
#define DF_CMD_POWERDOWN 0xB9
#define DF_CMD_WAKEUP 0xAB
#define DF_CMD_MAINMEMTOBUFF1 0x53
#define DF_CMD_MAINMEMTOBUFF2 0x55
#define DF_CMD_MAINMEMTOBUFF1COMP 0x60
#define DF_CMD_MAINMEMTOBUFF2COMP 0x61
#define DF_CMD_AUTOREWRITEBUFF1 0x58
#define DF_CMD_AUTOREWRITEBUFF2 0x59
#define DF_CMD_MAINMEMPAGEREAD 0xD2
#define DF_CMD_CONTARRAYREAD_LF 0x03
#define DF_CMD_BUFF1READ_LF 0xD1
#define DF_CMD_BUFF2READ_LF 0xD3
#define DF_CMD_BUFF1WRITE 0x84
#define DF_CMD_BUFF2WRITE 0x87
#define DF_CMD_BUFF1TOMAINMEMWITHERASE 0x83
#define DF_CMD_BUFF2TOMAINMEMWITHERASE 0x86
#define DF_CMD_BUFF1TOMAINMEM 0x88
#define DF_CMD_BUFF2TOMAINMEM 0x89
#define DF_CMD_MAINMEMPAGETHROUGHBUFF1 0x82
#define DF_CMD_MAINMEMPAGETHROUGHBUFF2 0x85
#define DF_CMD_PAGEERASE 0x81
#define DF_CMD_BLOCKERASE 0x50
#define DF_CMD_SECTORERASE 0x7C
#define DF_CMD_CHIPERASE ((char[]){0xC7, 0x94, 0x80, 0x9A})
#define DF_CMD_CHIPERASE_BYTE1 0xC7
#define DF_CMD_CHIPERASE_BYTE2 0x94
#define DF_CMD_CHIPERASE_BYTE3 0x80
#define DF_CMD_CHIPERASE_BYTE4 0x9A
#define DF_CMD_SECTORPROTECTIONOFF ((char[]){0x3D, 0x2A, 0x7F, 0x9A})
#define DF_CMD_SECTORPROTECTIONOFF_BYTE1 0x3D
#define DF_CMD_SECTORPROTECTIONOFF_BYTE2 0x2A
#define DF_CMD_SECTORPROTECTIONOFF_BYTE3 0x7F
#define DF_CMD_SECTORPROTECTIONOFF_BYTE4 0x9A
#define DF_CMD_READMANUFACTURERDEVICEINFO 0x9F
//@}
#endif
/** @} */

606
LUFA/Drivers/Misc/RingBuffer.h
View file

@ -1,303 +1,303 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 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 disclaim 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.
*/
/** \file
* \brief Lightweight ring (circular) buffer, for fast insertion/deletion of bytes.
*
* Lightweight ring buffer, for fast insertion/deletion. Multiple buffers can be created of
* different sizes to suit different needs.
*
* Note that for each buffer, insertion and removal operations may occur at the same time (via
* a multi-threaded ISR based system) however the same kind of operation (two or more insertions
* or deletions) must not overlap. If there is possibility of two or more of the same kind of
* operating occurring at the same point in time, atomic (mutex) locking should be used.
*/
/** \ingroup Group_MiscDrivers
* \defgroup Group_RingBuff Generic Byte Ring Buffer - LUFA/Drivers/Misc/RingBuffer.h
* \brief Lightweight ring buffer, for fast insertion/deletion of bytes.
*
* \section Sec_Dependencies Module Source Dependencies
* The following files must be built with any user project that uses this module:
* - None
*
* \section Sec_ModDescription Module Description
* Lightweight ring buffer, for fast insertion/deletion. Multiple buffers can be created of
* different sizes to suit different needs.
*
* Note that for each buffer, insertion and removal operations may occur at the same time (via
* a multi-threaded ISR based system) however the same kind of operation (two or more insertions
* or deletions) must not overlap. If there is possibility of two or more of the same kind of
* operating occurring at the same point in time, atomic (mutex) locking should be used.
*
* \section Sec_ExampleUsage Example Usage
* The following snippet is an example of how this module may be used within a typical
* application.
*
* \code
* // Create the buffer structure and its underlying storage array
* RingBuffer_t Buffer;
* uint8_t BufferData[128];
*
* // Initialize the buffer with the created storage array
* RingBuffer_InitBuffer(&Buffer, BufferData, sizeof(BufferData));
*
* // Insert some data into the buffer
* RingBuffer_Insert(Buffer, 'H');
* RingBuffer_Insert(Buffer, 'E');
* RingBuffer_Insert(Buffer, 'L');
* RingBuffer_Insert(Buffer, 'L');
* RingBuffer_Insert(Buffer, 'O');
*
* // Cache the number of stored bytes in the buffer
* uint16_t BufferCount = RingBuffer_GetCount(&Buffer);
*
* // Printer stored data length
* printf("Buffer Length: %d, Buffer Data: \r\n", BufferCount);
*
* // Print contents of the buffer one character at a time
* while (BufferCount--)
* putc(RingBuffer_Remove(&Buffer));
* \endcode
*
* @{
*/
#ifndef __RING_BUFFER_H__
#define __RING_BUFFER_H__
/* Includes: */
#include "../../Common/Common.h"
/* Enable C linkage for C++ Compilers: */
#if defined(__cplusplus)
extern "C" {
#endif
/* Type Defines: */
/** \brief Ring Buffer Management Structure.
*
* Type define for a new ring buffer object. Buffers should be initialized via a call to
* \ref RingBuffer_InitBuffer() before use.
*/
typedef struct
{
uint8_t* In; /**< Current storage location in the circular buffer. */
uint8_t* Out; /**< Current retrieval location in the circular buffer. */
uint8_t* Start; /**< Pointer to the start of the buffer's underlying storage array. */
uint8_t* End; /**< Pointer to the end of the buffer's underlying storage array. */
uint8_t Size; /**< Size of the buffer's underlying storage array. */
uint16_t Count; /**< Number of bytes currently stored in the buffer. */
} RingBuffer_t;
/* Inline Functions: */
/** Initializes a ring buffer ready for use. Buffers must be initialized via this function
* before any operations are called upon them. Already initialized buffers may be reset
* by re-initializing them using this function.
*
* \param[out] Buffer Pointer to a ring buffer structure to initialize.
* \param[out] DataPtr Pointer to a global array that will hold the data stored into the ring buffer.
* \param[out] Size Maximum number of bytes that can be stored in the underlying data array.
*/
static inline void RingBuffer_InitBuffer(RingBuffer_t* Buffer, uint8_t* const DataPtr, const uint16_t Size)
ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
static inline void RingBuffer_InitBuffer(RingBuffer_t* Buffer, uint8_t* const DataPtr, const uint16_t Size)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
Buffer->In = DataPtr;
Buffer->Out = DataPtr;
Buffer->Start = &DataPtr[0];
Buffer->End = &DataPtr[Size];
Buffer->Size = Size;
Buffer->Count = 0;
SetGlobalInterruptMask(CurrentGlobalInt);
}
/** Retrieves the current number of bytes stored in a particular buffer. This value is computed
* by entering an atomic lock on the buffer, so that the buffer cannot be modified while the
* computation takes place. This value should be cached when reading out the contents of the buffer,
* so that as small a time as possible is spent in an atomic lock.
*
* \note The value returned by this function is guaranteed to only be the minimum number of bytes
* stored in the given buffer; this value may change as other threads write new data, thus
* the returned number should be used only to determine how many successive reads may safely
* be performed on the buffer.
*
* \param[in] Buffer Pointer to a ring buffer structure whose count is to be computed.
*
* \return Number of bytes currently stored in the buffer.
*/
static inline uint16_t RingBuffer_GetCount(RingBuffer_t* const Buffer) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline uint16_t RingBuffer_GetCount(RingBuffer_t* const Buffer)
{
uint16_t Count;
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
Count = Buffer->Count;
SetGlobalInterruptMask(CurrentGlobalInt);
return Count;
}
/** Retrieves the free space in a particular buffer. This value is computed by entering an atomic lock
* on the buffer, so that the buffer cannot be modified while the computation takes place.
*
* \note The value returned by this function is guaranteed to only be the maximum number of bytes
* free in the given buffer; this value may change as other threads write new data, thus
* the returned number should be used only to determine how many successive writes may safely
* be performed on the buffer when there is a single writer thread.
*
* \param[in] Buffer Pointer to a ring buffer structure whose free count is to be computed.
*
* \return Number of free bytes in the buffer.
*/
static inline uint16_t RingBuffer_GetFreeCount(RingBuffer_t* const Buffer) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline uint16_t RingBuffer_GetFreeCount(RingBuffer_t* const Buffer)
{
return (Buffer->Size - RingBuffer_GetCount(Buffer));
}
/** Atomically determines if the specified ring buffer contains any data. This should
* be tested before removing data from the buffer, to ensure that the buffer does not
* underflow.
*
* If the data is to be removed in a loop, store the total number of bytes stored in the
* buffer (via a call to the \ref RingBuffer_GetCount() function) in a temporary variable
* to reduce the time spent in atomicity locks.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to insert into.
*
* \return Boolean \c true if the buffer contains no free space, false otherwise.
*/
static inline bool RingBuffer_IsEmpty(RingBuffer_t* const Buffer) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline bool RingBuffer_IsEmpty(RingBuffer_t* const Buffer)
{
return (RingBuffer_GetCount(Buffer) == 0);
}
/** Atomically determines if the specified ring buffer contains any free space. This should
* be tested before storing data to the buffer, to ensure that no data is lost due to a
* buffer overrun.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to insert into.
*
* \return Boolean \c true if the buffer contains no free space, false otherwise.
*/
static inline bool RingBuffer_IsFull(RingBuffer_t* const Buffer) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline bool RingBuffer_IsFull(RingBuffer_t* const Buffer)
{
return (RingBuffer_GetCount(Buffer) == Buffer->Size);
}
/** Inserts an element into the ring buffer.
*
* \note Only one execution thread (main program thread or an ISR) may insert into a single buffer
* otherwise data corruption may occur. Insertion and removal may occur from different execution
* threads.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to insert into.
* \param[in] Data Data element to insert into the buffer.
*/
static inline void RingBuffer_Insert(RingBuffer_t* Buffer, const uint8_t Data) ATTR_NON_NULL_PTR_ARG(1);
static inline void RingBuffer_Insert(RingBuffer_t* Buffer, const uint8_t Data)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
*Buffer->In = Data;
if (++Buffer->In == Buffer->End)
Buffer->In = Buffer->Start;
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
Buffer->Count++;
SetGlobalInterruptMask(CurrentGlobalInt);
}
/** Removes an element from the ring buffer.
*
* \note Only one execution thread (main program thread or an ISR) may remove from a single buffer
* otherwise data corruption may occur. Insertion and removal may occur from different execution
* threads.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to retrieve from.
*
* \return Next data element stored in the buffer.
*/
static inline uint8_t RingBuffer_Remove(RingBuffer_t* Buffer) ATTR_NON_NULL_PTR_ARG(1);
static inline uint8_t RingBuffer_Remove(RingBuffer_t* Buffer)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
uint8_t Data = *Buffer->Out;
if (++Buffer->Out == Buffer->End)
Buffer->Out = Buffer->Start;
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
Buffer->Count--;
SetGlobalInterruptMask(CurrentGlobalInt);
return Data;
}
/** Returns the next element stored in the ring buffer, without removing it.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to retrieve from.
*
* \return Next data element stored in the buffer.
*/
static inline uint8_t RingBuffer_Peek(RingBuffer_t* const Buffer) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline uint8_t RingBuffer_Peek(RingBuffer_t* const Buffer)
{
return *Buffer->Out;
}
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
}
#endif
#endif
/** @} */
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 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 disclaim 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.
*/
/** \file
* \brief Lightweight ring (circular) buffer, for fast insertion/deletion of bytes.
*
* Lightweight ring buffer, for fast insertion/deletion. Multiple buffers can be created of
* different sizes to suit different needs.
*
* Note that for each buffer, insertion and removal operations may occur at the same time (via
* a multi-threaded ISR based system) however the same kind of operation (two or more insertions
* or deletions) must not overlap. If there is possibility of two or more of the same kind of
* operating occurring at the same point in time, atomic (mutex) locking should be used.
*/
/** \ingroup Group_MiscDrivers
* \defgroup Group_RingBuff Generic Byte Ring Buffer - LUFA/Drivers/Misc/RingBuffer.h
* \brief Lightweight ring buffer, for fast insertion/deletion of bytes.
*
* \section Sec_Dependencies Module Source Dependencies
* The following files must be built with any user project that uses this module:
* - None
*
* \section Sec_ModDescription Module Description
* Lightweight ring buffer, for fast insertion/deletion. Multiple buffers can be created of
* different sizes to suit different needs.
*
* Note that for each buffer, insertion and removal operations may occur at the same time (via
* a multi-threaded ISR based system) however the same kind of operation (two or more insertions
* or deletions) must not overlap. If there is possibility of two or more of the same kind of
* operating occurring at the same point in time, atomic (mutex) locking should be used.
*
* \section Sec_ExampleUsage Example Usage
* The following snippet is an example of how this module may be used within a typical
* application.
*
* \code
* // Create the buffer structure and its underlying storage array
* RingBuffer_t Buffer;
* uint8_t BufferData[128];
*
* // Initialize the buffer with the created storage array
* RingBuffer_InitBuffer(&Buffer, BufferData, sizeof(BufferData));
*
* // Insert some data into the buffer
* RingBuffer_Insert(Buffer, 'H');
* RingBuffer_Insert(Buffer, 'E');
* RingBuffer_Insert(Buffer, 'L');
* RingBuffer_Insert(Buffer, 'L');
* RingBuffer_Insert(Buffer, 'O');
*
* // Cache the number of stored bytes in the buffer
* uint16_t BufferCount = RingBuffer_GetCount(&Buffer);
*
* // Printer stored data length
* printf("Buffer Length: %d, Buffer Data: \r\n", BufferCount);
*
* // Print contents of the buffer one character at a time
* while (BufferCount--)
* putc(RingBuffer_Remove(&Buffer));
* \endcode
*
* @{
*/
#ifndef __RING_BUFFER_H__
#define __RING_BUFFER_H__
/* Includes: */
#include "../../Common/Common.h"
/* Enable C linkage for C++ Compilers: */
#if defined(__cplusplus)
extern "C" {
#endif
/* Type Defines: */
/** \brief Ring Buffer Management Structure.
*
* Type define for a new ring buffer object. Buffers should be initialized via a call to
* \ref RingBuffer_InitBuffer() before use.
*/
typedef struct
{
uint8_t* In; /**< Current storage location in the circular buffer. */
uint8_t* Out; /**< Current retrieval location in the circular buffer. */
uint8_t* Start; /**< Pointer to the start of the buffer's underlying storage array. */
uint8_t* End; /**< Pointer to the end of the buffer's underlying storage array. */
uint8_t Size; /**< Size of the buffer's underlying storage array. */
uint16_t Count; /**< Number of bytes currently stored in the buffer. */
} RingBuffer_t;
/* Inline Functions: */
/** Initializes a ring buffer ready for use. Buffers must be initialized via this function
* before any operations are called upon them. Already initialized buffers may be reset
* by re-initializing them using this function.
*
* \param[out] Buffer Pointer to a ring buffer structure to initialize.
* \param[out] DataPtr Pointer to a global array that will hold the data stored into the ring buffer.
* \param[out] Size Maximum number of bytes that can be stored in the underlying data array.
*/
static inline void RingBuffer_InitBuffer(RingBuffer_t* Buffer, uint8_t* const DataPtr, const uint16_t Size)
ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
static inline void RingBuffer_InitBuffer(RingBuffer_t* Buffer, uint8_t* const DataPtr, const uint16_t Size)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
Buffer->In = DataPtr;
Buffer->Out = DataPtr;
Buffer->Start = &DataPtr[0];
Buffer->End = &DataPtr[Size];
Buffer->Size = Size;
Buffer->Count = 0;
SetGlobalInterruptMask(CurrentGlobalInt);
}
/** Retrieves the current number of bytes stored in a particular buffer. This value is computed
* by entering an atomic lock on the buffer, so that the buffer cannot be modified while the
* computation takes place. This value should be cached when reading out the contents of the buffer,
* so that as small a time as possible is spent in an atomic lock.
*
* \note The value returned by this function is guaranteed to only be the minimum number of bytes
* stored in the given buffer; this value may change as other threads write new data, thus
* the returned number should be used only to determine how many successive reads may safely
* be performed on the buffer.
*
* \param[in] Buffer Pointer to a ring buffer structure whose count is to be computed.
*
* \return Number of bytes currently stored in the buffer.
*/
static inline uint16_t RingBuffer_GetCount(RingBuffer_t* const Buffer) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline uint16_t RingBuffer_GetCount(RingBuffer_t* const Buffer)
{
uint16_t Count;
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
Count = Buffer->Count;
SetGlobalInterruptMask(CurrentGlobalInt);
return Count;
}
/** Retrieves the free space in a particular buffer. This value is computed by entering an atomic lock
* on the buffer, so that the buffer cannot be modified while the computation takes place.
*
* \note The value returned by this function is guaranteed to only be the maximum number of bytes
* free in the given buffer; this value may change as other threads write new data, thus
* the returned number should be used only to determine how many successive writes may safely
* be performed on the buffer when there is a single writer thread.
*
* \param[in] Buffer Pointer to a ring buffer structure whose free count is to be computed.
*
* \return Number of free bytes in the buffer.
*/
static inline uint16_t RingBuffer_GetFreeCount(RingBuffer_t* const Buffer) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline uint16_t RingBuffer_GetFreeCount(RingBuffer_t* const Buffer)
{
return (Buffer->Size - RingBuffer_GetCount(Buffer));
}
/** Atomically determines if the specified ring buffer contains any data. This should
* be tested before removing data from the buffer, to ensure that the buffer does not
* underflow.
*
* If the data is to be removed in a loop, store the total number of bytes stored in the
* buffer (via a call to the \ref RingBuffer_GetCount() function) in a temporary variable
* to reduce the time spent in atomicity locks.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to insert into.
*
* \return Boolean \c true if the buffer contains no free space, false otherwise.
*/
static inline bool RingBuffer_IsEmpty(RingBuffer_t* const Buffer) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline bool RingBuffer_IsEmpty(RingBuffer_t* const Buffer)
{
return (RingBuffer_GetCount(Buffer) == 0);
}
/** Atomically determines if the specified ring buffer contains any free space. This should
* be tested before storing data to the buffer, to ensure that no data is lost due to a
* buffer overrun.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to insert into.
*
* \return Boolean \c true if the buffer contains no free space, false otherwise.
*/
static inline bool RingBuffer_IsFull(RingBuffer_t* const Buffer) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline bool RingBuffer_IsFull(RingBuffer_t* const Buffer)
{
return (RingBuffer_GetCount(Buffer) == Buffer->Size);
}
/** Inserts an element into the ring buffer.
*
* \note Only one execution thread (main program thread or an ISR) may insert into a single buffer
* otherwise data corruption may occur. Insertion and removal may occur from different execution
* threads.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to insert into.
* \param[in] Data Data element to insert into the buffer.
*/
static inline void RingBuffer_Insert(RingBuffer_t* Buffer, const uint8_t Data) ATTR_NON_NULL_PTR_ARG(1);
static inline void RingBuffer_Insert(RingBuffer_t* Buffer, const uint8_t Data)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
*Buffer->In = Data;
if (++Buffer->In == Buffer->End)
Buffer->In = Buffer->Start;
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
Buffer->Count++;
SetGlobalInterruptMask(CurrentGlobalInt);
}
/** Removes an element from the ring buffer.
*
* \note Only one execution thread (main program thread or an ISR) may remove from a single buffer
* otherwise data corruption may occur. Insertion and removal may occur from different execution
* threads.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to retrieve from.
*
* \return Next data element stored in the buffer.
*/
static inline uint8_t RingBuffer_Remove(RingBuffer_t* Buffer) ATTR_NON_NULL_PTR_ARG(1);
static inline uint8_t RingBuffer_Remove(RingBuffer_t* Buffer)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
uint8_t Data = *Buffer->Out;
if (++Buffer->Out == Buffer->End)
Buffer->Out = Buffer->Start;
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
Buffer->Count--;
SetGlobalInterruptMask(CurrentGlobalInt);
return Data;
}
/** Returns the next element stored in the ring buffer, without removing it.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to retrieve from.
*
* \return Next data element stored in the buffer.
*/
static inline uint8_t RingBuffer_Peek(RingBuffer_t* const Buffer) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline uint8_t RingBuffer_Peek(RingBuffer_t* const Buffer)
{
return *Buffer->Out;
}
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
}
#endif
#endif
/** @} */