ahoneybun/qmk_firmware
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Replace ring buffer library in Benito and USBtoSerial projects with the new lightweight ring buffer header to improve reliability.

Browse source
This commit is contained in:
Dean Camera 2010-05-26 13:26:10 +00:00
parent 885170f5b4
commit 8d993afc53
16 changed files with 206 additions and 496 deletions
Download patch file Download diff file Expand all files Collapse all files

8
Projects/Benito/Benito.c
View file

@ -82,7 +82,7 @@ int main(void)
{
SetupHardware();
Buffer_Initialize(&Tx_Buffer);
RingBuffer_InitBuffer(&Tx_Buffer);
sei();
@ -98,9 +98,9 @@ int main(void)
}
/* Echo bytes from the target to the host via the virtual serial port */
while (Tx_Buffer.Elements > 0)
while (Tx_Buffer.Count)
{
CDC_Device_SendByte(&VirtualSerial_CDC_Interface, Buffer_GetElement(&Tx_Buffer));
CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&Tx_Buffer));
LEDs_TurnOnLEDs(LEDMASK_RX);
PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS;
@ -240,7 +240,7 @@ ISR(USART1_RX_vect, ISR_BLOCK)
uint8_t ReceivedByte = UDR1;
if (USB_DeviceState == DEVICE_STATE_Configured)
Buffer_StoreElement(&Tx_Buffer, ReceivedByte);
RingBuffer_Insert(&Tx_Buffer, ReceivedByte);
}
/** Event handler for the CDC Class driver Host-to-Device Line Encoding Changed event.

2
Projects/Benito/Benito.h
View file

@ -42,7 +42,7 @@
#include <avr/interrupt.h>
#include "Descriptors.h"
#include "Lib/RingBuff.h"
#include "Lib/LightweightRingBuff.h"
#include <LUFA/Version.h>
#include <LUFA/Drivers/Board/LEDs.h>

90
Projects/Benito/Lib/LightweightRingBuff.h Normal file
View file

@ -0,0 +1,90 @@
/*
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.
*/
/** \file
*
* Ultra lightweight ring buffer, for fast insertion/deletion.
*/
#ifndef _ULW_RING_BUFF_H_
#define _ULW_RING_BUFF_H_
/* Includes: */
#include <stdint.h>
#include <stdbool.h>
/* Defines: */
/** Size of each ring buffer, in bytes */
#define BUFFER_SIZE 128
/** Type of data to store into the buffer */
#define RingBuff_Data_t uint8_t
/* Type Defines: */
typedef struct
{
RingBuff_Data_t Buffer[BUFFER_SIZE];
RingBuff_Data_t* In;
RingBuff_Data_t* Out;
uint8_t Count;
} RingBuff_t;
/* Inline Functions: */
static inline void RingBuffer_InitBuffer(RingBuff_t* const Buffer)
{
Buffer->In = Buffer->Buffer;
Buffer->Out = Buffer->Buffer;
Buffer->Count = 0;
}
static inline void RingBuffer_Insert(RingBuff_t* const Buffer, RingBuff_Data_t Data)
{
*Buffer->In = Data;
if (++Buffer->In == &Buffer->Buffer[BUFFER_SIZE])
Buffer->In = Buffer->Buffer;
Buffer->Count++;
}
static inline RingBuff_Data_t RingBuffer_Remove(RingBuff_t* const Buffer)
{
RingBuff_Data_t Data = *Buffer->Out;
if (++Buffer->Out == &Buffer->Buffer[BUFFER_SIZE])
Buffer->Out = Buffer->Buffer;
Buffer->Count--;
return Data;
}
#endif

120
Projects/Benito/Lib/RingBuff.c
View file

@ -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

116
Projects/Benito/Lib/RingBuff.h
View file

@ -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 255 // 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

1
Projects/Benito/makefile
View file

@ -126,7 +126,6 @@ LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENAB
# List C source files here. (C dependencies are automatically generated.)
SRC = $(TARGET).c \
Descriptors.c \
Lib/RingBuff.c \
$(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/DevChapter9.c \
$(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Endpoint.c \
$(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Host.c \