Buffer implementation which is using a FreeRTOS StreamBuffer. The default allocator uses psram is available. More...

#include <BufferRTOS.h>

Inheritance diagram for BufferRTOS< T >:

Public Member Functions
	BufferRTOS (size_t xStreamBufferSizeBytes, size_t xTriggerLevel=1, TickType_t writeMaxWait=portMAX_DELAY, TickType_t readMaxWait=portMAX_DELAY, Allocator &allocator=DefaultAllocator)

T *	address () override
	returns the address of the start of the physical read buffer

int	available () override
	provides the number of entries that are available to read

int	availableForWrite () override
	provides the number of entries that are available to write

void	clear ()
	same as reset

virtual int	clearArray (int len)
	Removes the next len entries.

bool	isEmpty ()

bool	isFull () override
	checks if the buffer is full

T	peek () override
	peeks the actual entry from the buffer

T	read () override
	reads a single value

int	readArray (T data[], int len)
	reads multiple values

int	readFrames (T data[][2], int len)
	reads multiple values for array of 2 dimensional frames

template<int rows, int channels>
int	readFrames (T(&data)[rows][channels])

void	reset () override
	clears the buffer

void	resize (size_t size)
	Re-Allocats the memory and the queue.

void	setReadFromISR (bool active)

void	setReadMaxWait (TickType_t ticks)

void	setWriteFromISR (bool active)

void	setWriteMaxWait (TickType_t ticks)

size_t	size ()

bool	write (T data) override
	write add an entry to the buffer

int	writeArray (const T data[], int len)
	Fills the buffer data.

virtual int	writeArrayOverwrite (const T data[], int len)
	Fills the buffer data and overwrites the oldest data if the buffer is full.

Protected Member Functions
void	end ()
	Release resurces: call resize to restart again.

bool	setup ()

void	setWritePos (int pos)

Protected Attributes
size_t	current_size = 0

friend	NBuffer< T >

Allocator *	p_allocator = nullptr

uint8_t *	p_data = nullptr

bool	read_from_isr = false

int	readWait = portMAX_DELAY

StaticStreamBuffer_t	static_stream_buffer

size_t	trigger_level = 0

bool	write_from_isr = false

int	writeWait = portMAX_DELAY

BaseType_t	xHigherPriorityTaskWoken = pdFALSE

StreamBufferHandle_t	xStreamBuffer = nullptr

Detailed Description

Buffer implementation which is using a FreeRTOS StreamBuffer. The default allocator uses psram is available.

Template Parameters

T

Member Function Documentation

bool setup ( )

inlineprotected

The allocation has been postponed to be done here, so that we can e.g. use psram

The documentation for this class was generated from the following file: