pulsewire::NRZPreamble Class Reference

A Preamble implementation for NRZ protocols: alternating edges at full bit period, ending with a HIGH level to match NRZ idle state. This provides a clear synchronization pattern while ensuring the line is in the correct idle state after the preamble, which is crucial for accurate decoding of NRZ signals. More...

#include <Preamble.h>

Inheritance diagram for pulsewire::NRZPreamble:

Collaboration diagram for pulsewire::NRZPreamble:

Public Member Functions
bool	begin (uint16_t bitFrequencyHz) override
void	setEdges (const pulsewire::Vector< pulsewire::OutputEdge > &edges)
void	addEdge (const pulsewire::OutputEdge &edge)
void	addEdge (bool level, uint32_t pulseUs)
void	addEdge (bool level, uint16_t pulseCount, uint32_t frequencyHz)
void	clear ()
int	getEdges (Vector< OutputEdge > &output) const override
	Returns the expected preamble edges for this protocol.
size_t	preambleLength () const override
void	reset ()
virtual bool	detect (const OutputEdge &edge)
	Detects if the incoming edge matches the expected preamble pattern.
bool	inRange (uint32_t value, uint32_t target, uint32_t tolerance) const

Protected Attributes
pulsewire::Vector< pulsewire::OutputEdge >	_history
pulsewire::Vector< pulsewire::OutputEdge >	_expected

Detailed Description

A Preamble implementation for NRZ protocols: alternating edges at full bit period, ending with a HIGH level to match NRZ idle state. This provides a clear synchronization pattern while ensuring the line is in the correct idle state after the preamble, which is crucial for accurate decoding of NRZ signals.

Definition at line 240 of file Preamble.h.

Member Function Documentation

addEdge() [1/3]

void pulsewire::CustomPreambleUs::addEdge ( bool  level, uint16_t  pulseCount, uint32_t  frequencyHz  )

inlineinherited

Definition at line 142 of file Preamble.h.

addEdge() [2/3]

void pulsewire::CustomPreambleUs::addEdge ( bool  level, uint32_t  pulseUs  )

inlineinherited

Definition at line 138 of file Preamble.h.

addEdge() [3/3]

void pulsewire::CustomPreambleUs::addEdge ( const pulsewire::OutputEdge &  edge )

inlineinherited

Definition at line 137 of file Preamble.h.

begin()

bool pulsewire::NRZPreamble::begin ( uint16_t  bitFrequencyHz )

inlineoverridevirtual

Reimplemented from pulsewire::Preamble.

Definition at line 244 of file Preamble.h.

clear()

void pulsewire::CustomPreambleUs::clear ( )

inlineinherited

Definition at line 147 of file Preamble.h.

detect()

virtual bool pulsewire::Preamble::detect ( const OutputEdge &  edge )

inlinevirtualinherited

Detects if the incoming edge matches the expected preamble pattern.

Reimplemented in pulsewire::IRMultiProtocol, and pulsewire::NoPreamble.

Definition at line 52 of file Preamble.h.

getEdges()

int pulsewire::CustomPreambleUs::getEdges ( Vector< OutputEdge > &  output ) const

inlineoverridevirtualinherited

Returns the expected preamble edges for this protocol.

Implements pulsewire::Preamble.

Definition at line 148 of file Preamble.h.

inRange()

bool pulsewire::Preamble::inRange ( uint32_t  value, uint32_t  target, uint32_t  tolerance  ) const

inlineinherited

Utility function to check if a value is within a specified tolerance range of a target

Definition at line 95 of file Preamble.h.

preambleLength()

size_t pulsewire::CustomPreambleUs::preambleLength ( ) const

inlineoverridevirtualinherited

Implements pulsewire::Preamble.

Definition at line 154 of file Preamble.h.

reset()

void pulsewire::Preamble::reset ( )

inlineinherited

Definition at line 49 of file Preamble.h.

setEdges()

void pulsewire::CustomPreambleUs::setEdges ( const pulsewire::Vector< pulsewire::OutputEdge > &  edges )

inlineinherited

Definition at line 134 of file Preamble.h.

Field Documentation

_expected

pulsewire::Vector<pulsewire::OutputEdge> pulsewire::Preamble::_expected

protectedinherited

Definition at line 102 of file Preamble.h.

_history

pulsewire::Vector<pulsewire::OutputEdge> pulsewire::Preamble::_history

protectedinherited

Definition at line 101 of file Preamble.h.

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

• src/pulse/Preamble.h