The RingBuff library code has been replaced in the XPLAINBridge project with an ultra lightweight buffer to help improve the reliability of the bridge.
Dean Camera
15 years ago
parent
4a13a5484a
commit
9c037a952f
File diff suppressed because one or more lines are too long
@ -1,120 +0,0 @@
|
|||||||
/*
|
|
||||||
LUFA Library
|
|
||||||
Copyright (C) Dean Camera, 2010.
|
|
||||||
|
|
||||||
dean [at] fourwalledcubicle [dot] com
|
|
||||||
www.fourwalledcubicle.com
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
Copyright 2010 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.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include "RingBuff.h"
|
|
||||||
|
|
||||||
void Buffer_Initialize(RingBuff_t* const Buffer)
|
|
||||||
{
|
|
||||||
BUFF_ATOMIC_BLOCK
|
|
||||||
{
|
|
||||||
Buffer->InPtr = (RingBuff_Data_t*)&Buffer->Buffer;
|
|
||||||
Buffer->OutPtr = (RingBuff_Data_t*)&Buffer->Buffer;
|
|
||||||
Buffer->Elements = 0;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void Buffer_StoreElement(RingBuff_t* const Buffer, RingBuff_Data_t Data)
|
|
||||||
{
|
|
||||||
BUFF_ATOMIC_BLOCK
|
|
||||||
{
|
|
||||||
#if defined(BUFF_DROPOLD)
|
|
||||||
if (Buffer->Elements == BUFF_LENGTH)
|
|
||||||
{
|
|
||||||
Buffer->OutPtr++;
|
|
||||||
|
|
||||||
if (Buffer->OutPtr == &Buffer->Buffer[BUFF_LENGTH])
|
|
||||||
Buffer->OutPtr = (RingBuff_Data_t*)&Buffer->Buffer;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
Buffer->Elements++;
|
|
||||||
}
|
|
||||||
#elif defined(BUFF_DROPNEW)
|
|
||||||
if (Buffer->Elements == BUFF_LENGTH)
|
|
||||||
return;
|
|
||||||
|
|
||||||
Buffer->Elements++;
|
|
||||||
#elif defined(BUFF_NODROPCHECK)
|
|
||||||
Buffer->Elements++;
|
|
||||||
#endif
|
|
||||||
|
|
||||||
*(Buffer->InPtr) = Data;
|
|
||||||
Buffer->InPtr++;
|
|
||||||
|
|
||||||
if (Buffer->InPtr == &Buffer->Buffer[BUFF_LENGTH])
|
|
||||||
Buffer->InPtr = (RingBuff_Data_t*)&Buffer->Buffer;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
RingBuff_Data_t Buffer_GetElement(RingBuff_t* const Buffer)
|
|
||||||
{
|
|
||||||
RingBuff_Data_t BuffData;
|
|
||||||
|
|
||||||
BUFF_ATOMIC_BLOCK
|
|
||||||
{
|
|
||||||
#if defined(BUFF_EMPTYRETURNSZERO)
|
|
||||||
if (!(Buffer->Elements))
|
|
||||||
return 0;
|
|
||||||
#elif !defined(BUFF_NOEMPTYCHECK)
|
|
||||||
#error No empty buffer check behavior specified.
|
|
||||||
#endif
|
|
||||||
|
|
||||||
BuffData = *(Buffer->OutPtr);
|
|
||||||
|
|
||||||
Buffer->OutPtr++;
|
|
||||||
Buffer->Elements--;
|
|
||||||
|
|
||||||
if (Buffer->OutPtr == &Buffer->Buffer[BUFF_LENGTH])
|
|
||||||
Buffer->OutPtr = (RingBuff_Data_t*)&Buffer->Buffer;
|
|
||||||
}
|
|
||||||
|
|
||||||
return BuffData;
|
|
||||||
}
|
|
||||||
|
|
||||||
#if defined(BUFF_USEPEEK)
|
|
||||||
RingBuff_Data_t Buffer_PeekElement(const RingBuff_t* const Buffer)
|
|
||||||
{
|
|
||||||
RingBuff_Data_t BuffData;
|
|
||||||
|
|
||||||
BUFF_ATOMIC_BLOCK
|
|
||||||
{
|
|
||||||
#if defined(BUFF_EMPTYRETURNSZERO)
|
|
||||||
if (!(Buffer->Elements))
|
|
||||||
return 0;
|
|
||||||
#elif !defined(BUFF_NOEMPTYCHECK)
|
|
||||||
#error No empty buffer check behavior specified.
|
|
||||||
#endif
|
|
||||||
|
|
||||||
BuffData = *(Buffer->OutPtr);
|
|
||||||
}
|
|
||||||
|
|
||||||
return BuffData;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
@ -1,116 +0,0 @@
|
|||||||
/*
|
|
||||||
LUFA Library
|
|
||||||
Copyright (C) Dean Camera, 2010.
|
|
||||||
|
|
||||||
dean [at] fourwalledcubicle [dot] com
|
|
||||||
www.fourwalledcubicle.com
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
Copyright 2010 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.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* Buffer Configuration: */
|
|
||||||
/* Buffer length - select static size of created ring buffers: */
|
|
||||||
#define BUFF_STATICSIZE 128 // Set to the static ring buffer size for all ring buffers (place size after define)
|
|
||||||
|
|
||||||
/* Volatile mode - uncomment to make buffers volatile, for use in ISRs, etc: */
|
|
||||||
#define BUFF_VOLATILE // Uncomment to cause all ring buffers to become volatile (and atomic if multi-byte) in access
|
|
||||||
|
|
||||||
/* Drop mode - select behaviour when Buffer_StoreElement called on a full buffer: */
|
|
||||||
#define BUFF_DROPOLD // Uncomment to cause full ring buffers to drop the oldest character to make space when full
|
|
||||||
// #define BUFF_DROPNEW // Uncomment to cause full ring buffers to drop the new character when full
|
|
||||||
// #define BUFF_NODROPCHECK // Uncomment to ignore full ring buffer checks - checking left to user!
|
|
||||||
|
|
||||||
/* Underflow behaviour - select behaviour when Buffer_GetElement is called with an empty ring buffer: */
|
|
||||||
//#define BUFF_EMPTYRETURNSZERO // Uncomment to return 0 when an empty ring buffer is read
|
|
||||||
#define BUFF_NOEMPTYCHECK // Uncomment to disable checking of empty ring buffers - checking left to user!
|
|
||||||
|
|
||||||
/* Buffer storage type - set the datatype for the stored data */
|
|
||||||
#define BUFF_DATATYPE uint8_t // Change to the data type that is going to be stored into the buffer
|
|
||||||
|
|
||||||
/* Peek routine - uncomment to include the peek routine (fetches next byte without removing it from the buffer */
|
|
||||||
//#define BUFF_USEPEEK
|
|
||||||
|
|
||||||
#ifndef _RINGBUFF_H_
|
|
||||||
#define _RINGBUFF_H_
|
|
||||||
|
|
||||||
/* Includes: */
|
|
||||||
#include <avr/io.h>
|
|
||||||
#include <avr/interrupt.h>
|
|
||||||
#include <util/atomic.h>
|
|
||||||
#include <limits.h>
|
|
||||||
|
|
||||||
#include <LUFA/Common/Common.h>
|
|
||||||
|
|
||||||
/* Defines and checks: */
|
|
||||||
#if defined(BUFF_STATICSIZE)
|
|
||||||
#define BUFF_LENGTH BUFF_STATICSIZE
|
|
||||||
#else
|
|
||||||
#error No buffer length specified!
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#if !(defined(BUFF_DROPOLD) || defined(BUFF_DROPNEW) || defined(BUFF_NODROPCHECK))
|
|
||||||
#error No buffer drop mode specified.
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#if !defined(BUFF_DATATYPE)
|
|
||||||
#error Ringbuffer storage data type not specified.
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#if defined(BUFF_VOLATILE)
|
|
||||||
#define BUFF_MODE volatile
|
|
||||||
#define BUFF_ATOMIC_BLOCK ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
|
|
||||||
#else
|
|
||||||
#define BUFF_MODE
|
|
||||||
#define BUFF_ATOMIC_BLOCK
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#if (BUFF_STATICSIZE > LONG_MAX)
|
|
||||||
#define RingBuff_Elements_t uint64_t
|
|
||||||
#elif (BUFF_STATICSIZE > INT_MAX)
|
|
||||||
#define RingBuff_Elements_t uint32_t
|
|
||||||
#elif (BUFF_STATICSIZE > CHAR_MAX)
|
|
||||||
#define RingBuff_Elements_t uint16_t
|
|
||||||
#else
|
|
||||||
#define RingBuff_Elements_t uint8_t
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/* Type Defines: */
|
|
||||||
typedef BUFF_DATATYPE RingBuff_Data_t;
|
|
||||||
|
|
||||||
typedef BUFF_MODE struct
|
|
||||||
{
|
|
||||||
RingBuff_Data_t Buffer[BUFF_LENGTH];
|
|
||||||
RingBuff_Data_t* InPtr;
|
|
||||||
RingBuff_Data_t* OutPtr;
|
|
||||||
RingBuff_Elements_t Elements;
|
|
||||||
} RingBuff_t;
|
|
||||||
|
|
||||||
/* Function Prototypes: */
|
|
||||||
void Buffer_Initialize(RingBuff_t* const Buff);
|
|
||||||
void Buffer_StoreElement(RingBuff_t* const Buffer, RingBuff_Data_t Data);
|
|
||||||
RingBuff_Data_t Buffer_GetElement(RingBuff_t* const Buffer);
|
|
||||||
#if defined(BUFF_USEPEEK)
|
|
||||||
RingBuff_Data_t Buffer_PeekElement(const RingBuff_t* const Buffer);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#endif
|
|
||||||
Loading…
Reference in new issue