A pattern generator channel of a BERT. More...

#include <BERTOutputChannel.h>

Inheritance diagram for BERTOutputChannel:

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Collaboration diagram for BERTOutputChannel:

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Public Member Functions
	BERTOutputChannel (const std::string &hwname, BERT *bert, const std::string &color="#808080", size_t index=0)
	Initialize the channel.

virtual void	Refresh (vk::raii::CommandBuffer &cmdBuf, std::shared_ptr< QueueHandle > queue) override

virtual bool	ValidateChannel (size_t i, StreamDescriptor stream) override
	Check if a stream is allowed to be connected to the given input.

BERT *	GetBERT () const
	Get the BERT this channel is part of.

void	SetPattern (BERT::Pattern pattern)
	Set the pattern this channel is generating.

BERT::Pattern	GetPattern ()
	Get the pattern this channel is currently generating.

std::vector< BERT::Pattern >	GetAvailablePatterns ()
	Get the set of patterns this channel is capable of generating.

bool	GetInvert ()
	Get the polarity inversion state of this channel.

void	SetInvert (bool invert)
	Set the polarity inversion state of this channel.

std::vector< float >	GetAvailableDriveStrengths ()
	Get the set of amplitudes this channel is capable of outputting.

float	GetDriveStrength ()
	Get the current nominal amplitude of this channel.

void	SetDriveStrength (float drive)
	Set the current nominal amplitude of this channel.

bool	GetEnable ()
	Gets the enable status of this channel.

void	Enable (bool b)
	Set the enable state of this channel.

float	GetPreCursor ()
	Gets the TX FFE pre-cursor coefficient.

void	SetPreCursor (float f)
	Sets the TX FFE pre-cursor coefficient.

float	GetPostCursor ()
	Gets the TX FFE post-cursor coefficient.

void	SetPostCursor (float f)
	Sets the TX FFE post-cursor coefficient.

int64_t	GetDataRate ()
	Gets the data rate of this channel, in symbols per second.

void	SetDataRate (int64_t rate)
	Sets the data rate of this channel, in symbols per second.

virtual PhysicalConnector	GetPhysicalConnector () override

Public Member Functions inherited from InstrumentChannel
	InstrumentChannel (Instrument *inst, const std::string &hwname, const std::string &color="#808080", Unit xunit=Unit(Unit::UNIT_FS), size_t index=0)

	InstrumentChannel (Instrument *inst, const std::string &hwname, const std::string &color="#808080", Unit xunit=Unit(Unit::UNIT_FS), Unit yunit=Unit(Unit::UNIT_VOLTS), Stream::StreamType stype=Stream::STREAM_TYPE_ANALOG, size_t index=0)

virtual void	SetDisplayName (std::string name)
	Sets the human-readable nickname for this channel, as displayed in the GUI.

virtual std::string	GetDisplayName ()
	Gets the human-readable nickname for this channel, as displayed in the GUI.

const std::string &	GetHwname () const
	Gets the hardware name of the channel (m_hwname)

size_t	GetIndex () const
	Gets the (zero based) index of the channel.

Instrument *	GetInstrument () const
	Gets the instrument this channel is part of (if any)

void	ClearCachedDisplayName ()
	Sets the display name to an empty string, causing a fetch from hardware.

void	SetData (WaveformBase *pNew, size_t stream)
	Sets the waveform data for a given stream, replacing any previous waveform.

virtual Unit	GetXAxisUnits ()
	Returns the X axis unit for this channel.

virtual Unit	GetYAxisUnits (size_t stream)
	Returns the Y axis unit for a specified stream.

virtual void	SetXAxisUnits (const Unit &rhs)
	Changes the X axis unit for this channel.

virtual void	SetYAxisUnits (const Unit &rhs, size_t stream)
	Changes the X axis unit for a specified stream.

Stream::StreamType	GetType (size_t stream)
	Returns the type of a specified stream.

size_t	GetStreamCount ()
	Get the number of data streams.

std::string	GetStreamName (size_t stream)
	Gets the name of a stream (for display in the UI)

WaveformBase *	GetData (size_t stream)
	Get the contents of a data stream.

uint8_t	GetStreamFlags (size_t stream)
	Get the flags of a data stream.

float	GetScalarValue (size_t stream)
	Gets the value of a scalar data stream.

void	SetScalarValue (size_t stream, float value)
	Sets the value of a scalar data stream.

uint64_t	GetDigitalScalarValue (size_t stream)
	Gets the value of a scalar data stream.

uint64_t	GetDigitalWidth (size_t stream)
	Gets the width of a digital data stream.

void	SetDigitalWidth (size_t stream, uint64_t width)
	Set the width of a digital data stream.

void	SetDigitalScalarValue (size_t stream, uint64_t value)
	Sets the value of a scalar data stream.

WaveformBase *	Detach (size_t stream)
	Detach the capture data from this channel.

virtual bool	ShouldPersistWaveform ()
	Determine whether the channel's waveform(s) should be persisted to a session file.

virtual DownloadState	GetDownloadState ()
	Returns the current download state of this channel.

virtual float	GetDownloadProgress ()
	returns the current completion of the download (on the range [0, 1]), if not DOWNLOAD_UNKNOWN

virtual double	GetDownloadStartTime ()
	returns the start time of a download, if we are DOWNLOAD_IN_PROGRESS; undefined, otherwise

Public Member Functions inherited from FlowGraphNode
void	DetachInputs ()
	Disconnects all inputs from the node without releasing them.

size_t	GetInputCount ()
	Get the number of input ports.

std::string	GetInputName (size_t i)

void	SetInput (size_t i, StreamDescriptor stream, bool force=false)
	Connects a stream to the input of this node.

void	SetInput (const std::string &name, StreamDescriptor stream, bool force=false)

bool	HasInput (StreamDescriptor desc)
	Checks if the given stream is connected to at least one of our inputs.

StreamDescriptor	GetInput (size_t i)
	Gets the descriptor for one of our inputs.

std::shared_ptr< InputConstraint >	GetInputConstraints (size_t i)
	Get the constraints on one of our inputs.

FilterParameter &	GetParameter (std::string s)

bool	HasParameter (std::string s)
	Checks if we have a parameter with a given name.

ParameterMapType::iterator	GetParamBegin ()
	Returns an iterator to the beginning of our parameter map.

ParameterMapType::iterator	GetParamEnd ()
	Returns an iterator to the end of our parameter map.

size_t	GetParamCount ()
	Returns the number of parameter we have.

virtual YAML::Node	SerializeConfiguration (IDTable &table)
	Serializes this trigger's configuration to a YAML string.

virtual void	LoadParameters (const YAML::Node &node, IDTable &table)
	Load configuration from a save file.

virtual void	LoadInputs (const YAML::Node &node, IDTable &table)

bool	IsDownstreamOf (std::set< FlowGraphNode * > nodes)
	Determines if this node is downstream of any of the specified other nodes.

virtual uint32_t	GetExecutionCapabilitiesMask ()
	Returns a bitmask of ExecutionCapabilities fields.

bool	HasMessages () const
	Checks if this graph has any messages.

const std::vector< FlowGraphNodeMessage > &	GetMessages () const
	Walking through any messages.

const FlowGraphNodeMessage *	GetMostSevereMessage () const

void	AddSink (size_t stream, FlowGraphNode *node)

void	RemoveSink (size_t stream, FlowGraphNode *node)

const std::set< FlowGraphNode * > &	GetSinks (size_t stream)

sigc::signal< void()>	signal_parametersChanged ()

sigc::signal< void()>	signal_inputsChanged ()

Additional Inherited Members
Public Types inherited from InstrumentChannel
enum	PhysicalConnector { CONNECTOR_BANANA_DUAL , CONNECTOR_BMA , CONNECTOR_BNC , CONNECTOR_K , CONNECTOR_K_DUAL , CONNECTOR_N , CONNECTOR_SMA }

enum	VisibilityMode { VIS_HIDE , VIS_AUTO , VIS_SHOW }
	Selects how the channel should be displayed in e.g. the ngscopeclient filter graph editor.

enum	DownloadState { DOWNLOAD_UNKNOWN , DOWNLOAD_NONE , DOWNLOAD_WAITING , DOWNLOAD_IN_PROGRESS , DOWNLOAD_FINISHED }
	Enum values to be mapped to GetDownloadState() int result value for specific channel download states. More...

Public Types inherited from FlowGraphNode
enum class	ExecutionCapabilities { None = 0 , CommandBufferAppend = 1 , CommandBufferTailCall = 2 , VulkanOnly = 4 , DynamicShader = 8 }

typedef std::map< std::string, FilterParameter >	ParameterMapType
	Short name for a map of strings to parameters.

Public Attributes inherited from InstrumentChannel
std::string	m_displaycolor
	Display color (HTML hex notation with optional alpha channel: #RRGGBB or ##RRGGBBAA)

enum InstrumentChannel::VisibilityMode	m_visibilityMode

Protected Member Functions inherited from InstrumentChannel
virtual void	ClearStreams ()
	Clears out any existing streams.

virtual size_t	AddStream (Unit yunit, const std::string &name, Stream::StreamType stype, uint8_t flags=0)
	Adds a new data stream to the channel.

Protected Member Functions inherited from FlowGraphNode
virtual void	OnInputChanged (size_t i)
	Called when a new input is connected to the node.

WaveformBase *	GetInputWaveform (size_t i)
	Gets the waveform attached to the specified input.

SparseAnalogWaveform *	GetSparseAnalogInputWaveform (size_t i)
	Gets the analog waveform attached to the specified input.

UniformAnalogWaveform *	GetUniformAnalogInputWaveform (size_t i)
	Gets the analog waveform attached to the specified input.

SparseDigitalWaveform *	GetSparseDigitalInputWaveform (size_t i)
	Gets the digital waveform attached to the specified input.

UniformDigitalWaveform *	GetUniformDigitalInputWaveform (size_t i)
	Gets the digital waveform attached to the specified input.

virtual void	CreateInput (const std::string &name)
	Gets the digital bus waveform attached to the specified input.

template<class T , class... Args>
void	CreateInput (const std::string &name, Args &&... args)

std::string	GetInputDisplayName (size_t i)
	Gets the display name for one of our inputs.

void	ClearMessages ()
	Remove any messages left over from the last graph refresh.

void	AddMessage (const FlowGraphNodeMessage &msg)
	Attach a new message to the node.

void	AddMessage (Severity severity, const std::string &title, const std::string &message)
	Attach a new message to the node.

void	AddErrorMessage (const std::string &err)
	Add a new error message.

void	AddErrorMessage (const std::string &title, const std::string &err)
	Add a new error message with a title.

Protected Attributes inherited from InstrumentChannel
Instrument *	m_instrument
	The instrument we're part of (may be null in the case of filters etc)

std::string	m_hwname
	Hardware name of the channel.

std::string	m_displayname
	Display name (user defined, defaults to m_hwname).

size_t	m_index
	Zero based index of the channel within the instrument.

Unit	m_xAxisUnit
	Unit of measurement for our horizontal axis (common to all streams)

std::vector< Stream >	m_streams
	Configuration data for each of our output streams.

Protected Attributes inherited from FlowGraphNode
std::vector< std::shared_ptr< InputDescriptor > >	m_inputs
	Input ports.

std::vector< std::set< FlowGraphNode * > >	m_sinks
	The nodes (if any) that each of our streams drives.

ParameterMapType	m_parameters

sigc::signal< void()>	m_parametersChangedSignal
	Signal emitted when the set of parameters changes.

sigc::signal< void()>	m_inputsChangedSignal
	Signal emitted when the set of inputs changes.

std::vector< FlowGraphNodeMessage >	m_messages

Detailed Description

A pattern generator channel of a BERT.

Constructor & Destructor Documentation

◆ BERTOutputChannel()

BERTOutputChannel::BERTOutputChannel	(	const std::string &	hwname,
		BERT *	bert,
		const std::string &	color = `"#808080"`,
		size_t	index = `0`
	)

Initialize the channel.

Parameters

hwname	Hardware name of the channel
parent	BERT the channel is part of
color	Initial display color of the channel
index	Number of the channel

Member Function Documentation

◆ Enable()

void BERTOutputChannel::Enable ( bool b )

inline

Set the enable state of this channel.

Parameters

b	True to enable the channel, false to disable

◆ GetAvailableDriveStrengths()

std::vector< float > BERTOutputChannel::GetAvailableDriveStrengths ( )

inline

Get the set of amplitudes this channel is capable of outputting.

Amplitudes are in nominal volts P-P with all TX equalizer taps set to zero.

◆ GetDriveStrength()

float BERTOutputChannel::GetDriveStrength ( )

inline

Get the current nominal amplitude of this channel.

Amplitudes are in nominal volts P-P with all TX equalizer taps set to zero.

◆ GetPhysicalConnector()

InstrumentChannel::PhysicalConnector BERTOutputChannel::GetPhysicalConnector ( )

overridevirtual

Reimplemented from InstrumentChannel.

◆ GetPostCursor()

float BERTOutputChannel::GetPostCursor ( )

inline

Gets the TX FFE post-cursor coefficient.

Equalizer coefficients are are normalized so that 0 is the lowest possible tap value and 1 is the highest possible tap value. Some instruments allow negative values (which invert the sign of the tap).

The exact mapping of normalized coefficients to FFE gain steps is instrument specific and may be nonlinear.

◆ GetPreCursor()

float BERTOutputChannel::GetPreCursor ( )

inline

Gets the TX FFE pre-cursor coefficient.

Equalizer coefficients are are normalized so that 0 is the lowest possible tap value and 1 is the highest possible tap value. Some instruments allow negative values (which invert the sign of the tap).

The exact mapping of normalized coefficients to FFE gain steps is instrument specific and may be nonlinear.

◆ Refresh()

void BERTOutputChannel::Refresh	(	vk::raii::CommandBuffer &	cmdBuf,
		std::shared_ptr< QueueHandle >	queue
	)

overridevirtual

Reimplemented from InstrumentChannel.

◆ SetDataRate()

void BERTOutputChannel::SetDataRate ( int64_t rate )

inline

Sets the data rate of this channel, in symbols per second.

Depending on the clocking architecture of the instrument, this may affect other channels.

For example, on MultiLane BERTs all channels share a single timebase. Antikernel Labs BERTs are based on Xilinx FPGAs and channels are divided into quads which each share some clocking resources.

Parameters

rate	Desired data rate

◆ SetDriveStrength()

void BERTOutputChannel::SetDriveStrength ( float drive )

inline

Set the current nominal amplitude of this channel.

Parameters

drive Desired amplitude; nominal volts P-P with all TX equalizer taps set to zero.

◆ SetInvert()

void BERTOutputChannel::SetInvert ( bool invert )

inline

Set the polarity inversion state of this channel.

Parameters

invert New inversion state (true = invert, false = normal polarity)

◆ SetPattern()

void BERTOutputChannel::SetPattern ( BERT::Pattern pattern )

inline

Set the pattern this channel is generating.

Parameters

pattern The new pattern

◆ SetPostCursor()

void BERTOutputChannel::SetPostCursor ( float f )

inline

Sets the TX FFE post-cursor coefficient.

Equalizer coefficients are are normalized so that 0 is the lowest possible tap value and 1 is the highest possible tap value. Some instruments allow negative values (which invert the sign of the tap).

The exact mapping of normalized coefficients to FFE gain steps is instrument specific and may be nonlinear.

Parameters

f	Post-cursor coefficient

◆ SetPreCursor()

void BERTOutputChannel::SetPreCursor ( float f )

inline

Sets the TX FFE pre-cursor coefficient.

Equalizer coefficients are are normalized so that 0 is the lowest possible tap value and 1 is the highest possible tap value. Some instruments allow negative values (which invert the sign of the tap).

The exact mapping of normalized coefficients to FFE gain steps is instrument specific and may be nonlinear.

Parameters

f	Pre-cursor coefficient

◆ ValidateChannel()

bool BERTOutputChannel::ValidateChannel	(	size_t	i,
		StreamDescriptor	stream
	)

overridevirtual

Check if a stream is allowed to be connected to the given input.

Reimplemented from FlowGraphNode.

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

lib/scopehal/BERTOutputChannel.h
lib/scopehal/BERTOutputChannel.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ BERTOutputChannel()

Member Function Documentation

◆ Enable()

◆ GetAvailableDriveStrengths()

◆ GetDriveStrength()

◆ GetPhysicalConnector()

◆ GetPostCursor()

◆ GetPreCursor()

◆ Refresh()

◆ SetDataRate()

◆ SetDriveStrength()

◆ SetInvert()

◆ SetPattern()

◆ SetPostCursor()

◆ SetPreCursor()

◆ ValidateChannel()