A graphical sink to display multiple signals in frequency. More...

#include <gnuradio/qtgui/freq_sink_c.h>

Public Types
typedef boost::shared_ptr< freq_sink_c >	sptr

Public Types inherited from gr::block
enum	{ WORK_CALLED_PRODUCE = -2, WORK_DONE = -1 }
	Magic return values from general_work. More...

enum	tag_propagation_policy_t { TPP_DONT = 0, TPP_ALL_TO_ALL = 1, TPP_ONE_TO_ONE = 2, TPP_CUSTOM = 3 }
	enum to represent different tag propagation policies. More...

Public Member Functions
virtual void	exec_ ()=0

virtual QWidget *	qwidget ()=0

virtual void *	pyqwidget ()=0

virtual void	set_fft_size (const int fftsize)=0

virtual int	fft_size () const =0

virtual void	set_fft_average (const float fftavg)=0

virtual float	fft_average () const =0

virtual void	set_fft_window (const gr::filter::firdes::win_type win)=0

virtual gr::filter::firdes::win_type	fft_window ()=0

virtual void	set_frequency_range (const double centerfreq, const double bandwidth)=0

virtual void	set_y_axis (double min, double max)=0

virtual void	set_update_time (double t)=0

virtual void	set_title (const std::string &title)=0

virtual void	set_y_label (const std::string &label, const std::string &unit)=0

virtual void	set_line_label (unsigned int which, const std::string &label)=0

virtual void	set_line_color (unsigned int which, const std::string &color)=0

virtual void	set_line_width (unsigned int which, int width)=0

virtual void	set_line_style (unsigned int which, int style)=0

virtual void	set_line_marker (unsigned int which, int marker)=0

virtual void	set_line_alpha (unsigned int which, double alpha)=0

virtual void	set_trigger_mode (trigger_mode mode, float level, int channel, const std::string &tag_key="")=0

virtual std::string	title ()=0

virtual std::string	line_label (unsigned int which)=0

virtual std::string	line_color (unsigned int which)=0

virtual int	line_width (unsigned int which)=0

virtual int	line_style (unsigned int which)=0

virtual int	line_marker (unsigned int which)=0

virtual double	line_alpha (unsigned int which)=0

virtual void	set_size (int width, int height)=0

virtual void	enable_menu (bool en=true)=0

virtual void	enable_grid (bool en=true)=0

virtual void	enable_autoscale (bool en=true)=0

virtual void	enable_control_panel (bool en=true)=0

virtual void	enable_max_hold (bool en)=0

virtual void	enable_min_hold (bool en)=0

virtual void	clear_max_hold ()=0

virtual void	clear_min_hold ()=0

virtual void	disable_legend ()=0

virtual void	reset ()=0

virtual void	enable_axis_labels (bool en=true)=0

Public Member Functions inherited from gr::sync_block
virtual int	work (int noutput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)=0
	just like gr::block::general_work, only this arranges to call consume_each for you More...

void	forecast (int noutput_items, gr_vector_int &ninput_items_required)
	Estimate input requirements given output request. More...

int	general_work (int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
	compute output items from input items More...

int	fixed_rate_ninput_to_noutput (int ninput)
	Given ninput samples, return number of output samples that will be produced. N.B. this is only defined if fixed_rate returns true. Generally speaking, you don't need to override this. More...

int	fixed_rate_noutput_to_ninput (int noutput)
	Given noutput samples, return number of input samples required to produce noutput. N.B. this is only defined if fixed_rate returns true. Generally speaking, you don't need to override this. More...

Public Member Functions inherited from gr::block
virtual	~block ()

unsigned	history () const

void	set_history (unsigned history)

void	declare_sample_delay (int which, unsigned delay)

void	declare_sample_delay (unsigned delay)

unsigned	sample_delay (int which) const

bool	fixed_rate () const
	Return true if this block has a fixed input to output rate. More...

virtual bool	start ()
	Called to enable drivers, etc for i/o devices. More...

virtual bool	stop ()
	Called to disable drivers, etc for i/o devices. More...

void	set_output_multiple (int multiple)
	Constrain the noutput_items argument passed to forecast and general_work. More...

int	output_multiple () const

bool	output_multiple_set () const

void	set_alignment (int multiple)
	Constrains buffers to work on a set item alignment (for SIMD) More...

int	alignment () const

void	set_unaligned (int na)

int	unaligned () const

void	set_is_unaligned (bool u)

bool	is_unaligned () const

void	consume (int which_input, int how_many_items)
	Tell the scheduler `how_many_items` of input stream `which_input` were consumed. More...

void	consume_each (int how_many_items)
	Tell the scheduler `how_many_items` were consumed on each input stream. More...

void	produce (int which_output, int how_many_items)
	Tell the scheduler `how_many_items` were produced on output stream `which_output`. More...

void	set_relative_rate (double relative_rate)
	Set the approximate output rate / input rate. More...

void	set_inverse_relative_rate (double inverse_relative_rate)
	Set the approximate output rate / input rate using its reciprocal. More...

void	set_relative_rate (uint64_t interpolation, uint64_t decimation)
	Set the approximate output rate / input rate as an integer ratio. More...

double	relative_rate () const
	return the approximate output rate / input rate More...

uint64_t	relative_rate_i () const
	return the numerator, or interpolation rate, of the approximate output rate / input rate More...

uint64_t	relative_rate_d () const
	return the denominator, or decimation rate, of the approximate output rate / input rate More...

mpq_class &	mp_relative_rate ()
	return a reference to the multiple precision rational represntation of the approximate output rate / input rate More...

uint64_t	nitems_read (unsigned int which_input)
	Return the number of items read on input stream which_input. More...

uint64_t	nitems_written (unsigned int which_output)
	Return the number of items written on output stream which_output. More...

tag_propagation_policy_t	tag_propagation_policy ()
	Asks for the policy used by the scheduler to moved tags downstream. More...

void	set_tag_propagation_policy (tag_propagation_policy_t p)
	Set the policy by the scheduler to determine how tags are moved downstream. More...

int	min_noutput_items () const
	Return the minimum number of output items this block can produce during a call to work. More...

void	set_min_noutput_items (int m)
	Set the minimum number of output items this block can produce during a call to work. More...

int	max_noutput_items ()
	Return the maximum number of output items this block will handle during a call to work. More...

void	set_max_noutput_items (int m)
	Set the maximum number of output items this block will handle during a call to work. More...

void	unset_max_noutput_items ()
	Clear the switch for using the max_noutput_items value of this block. More...

bool	is_set_max_noutput_items ()
	Ask the block if the flag is or is not set to use the internal value of max_noutput_items during a call to work. More...

void	expand_minmax_buffer (int port)

long	max_output_buffer (size_t i)
	Returns max buffer size on output port `i`. More...

void	set_max_output_buffer (long max_output_buffer)
	Request limit on max buffer size on all output ports. More...

void	set_max_output_buffer (int port, long max_output_buffer)
	Request limit on max buffer size on output port `port`. More...

long	min_output_buffer (size_t i)
	Returns min buffer size on output port `i`. More...

void	set_min_output_buffer (long min_output_buffer)
	Request limit on the minimum buffer size on all output ports. More...

void	set_min_output_buffer (int port, long min_output_buffer)
	Request limit on min buffer size on output port `port`. More...

float	pc_noutput_items ()
	Gets instantaneous noutput_items performance counter. More...

float	pc_noutput_items_avg ()
	Gets average noutput_items performance counter. More...

float	pc_noutput_items_var ()
	Gets variance of noutput_items performance counter. More...

float	pc_nproduced ()
	Gets instantaneous num items produced performance counter. More...

float	pc_nproduced_avg ()
	Gets average num items produced performance counter. More...

float	pc_nproduced_var ()
	Gets variance of num items produced performance counter. More...

float	pc_input_buffers_full (int which)
	Gets instantaneous fullness of `which` input buffer. More...

float	pc_input_buffers_full_avg (int which)
	Gets average fullness of `which` input buffer. More...

float	pc_input_buffers_full_var (int which)
	Gets variance of fullness of `which` input buffer. More...

std::vector< float >	pc_input_buffers_full ()
	Gets instantaneous fullness of all input buffers. More...

std::vector< float >	pc_input_buffers_full_avg ()
	Gets average fullness of all input buffers. More...

std::vector< float >	pc_input_buffers_full_var ()
	Gets variance of fullness of all input buffers. More...

float	pc_output_buffers_full (int which)
	Gets instantaneous fullness of `which` output buffer. More...

float	pc_output_buffers_full_avg (int which)
	Gets average fullness of `which` output buffer. More...

float	pc_output_buffers_full_var (int which)
	Gets variance of fullness of `which` output buffer. More...

std::vector< float >	pc_output_buffers_full ()
	Gets instantaneous fullness of all output buffers. More...

std::vector< float >	pc_output_buffers_full_avg ()
	Gets average fullness of all output buffers. More...

std::vector< float >	pc_output_buffers_full_var ()
	Gets variance of fullness of all output buffers. More...

float	pc_work_time ()
	Gets instantaneous clock cycles spent in work. More...

float	pc_work_time_avg ()
	Gets average clock cycles spent in work. More...

float	pc_work_time_var ()
	Gets average clock cycles spent in work. More...

float	pc_work_time_total ()
	Gets total clock cycles spent in work. More...

float	pc_throughput_avg ()
	Gets average throughput. More...

void	reset_perf_counters ()
	Resets the performance counters. More...

void	setup_pc_rpc ()
	Sets up export of perf. counters to ControlPort. Only called by the scheduler. More...

bool	is_pc_rpc_set ()
	Checks if this block is already exporting perf. counters to ControlPort. More...

void	no_pc_rpc ()
	If the block calls this in its constructor, it's perf. counters will not be exported. More...

void	set_processor_affinity (const std::vector< int > &mask)
	Set the thread's affinity to processor core `n`. More...

void	unset_processor_affinity ()
	Remove processor affinity to a specific core. More...

std::vector< int >	processor_affinity ()
	Get the current processor affinity. More...

int	active_thread_priority ()
	Get the current thread priority in use. More...

int	thread_priority ()
	Get the current thread priority stored. More...

int	set_thread_priority (int priority)
	Set the current thread priority. More...

bool	update_rate () const

void	system_handler (pmt::pmt_t msg)
	the system message handler More...

void	set_log_level (std::string level)
	Set the logger's output level. More...

std::string	log_level ()
	Get the logger's output level. More...

bool	finished ()
	returns true when execution has completed due to a message connection More...

block_detail_sptr	detail () const

void	set_detail (block_detail_sptr detail)

void	notify_msg_neighbors ()
	Tell msg neighbors we are finished. More...

void	clear_finished ()
	Make sure we don't think we are finished. More...

std::string	identifier () const

Public Member Functions inherited from gr::basic_block
pmt::pmt_t	message_subscribers (pmt::pmt_t port)

virtual	~basic_block ()

long	unique_id () const

long	symbolic_id () const

std::string	name () const

std::string	symbol_name () const

std::string	identifier () const

gr::io_signature::sptr	input_signature () const

gr::io_signature::sptr	output_signature () const

basic_block_sptr	to_basic_block ()

bool	alias_set () const

std::string	alias () const

pmt::pmt_t	alias_pmt () const

void	set_block_alias (std::string name)

void	message_port_register_in (pmt::pmt_t port_id)

void	message_port_register_out (pmt::pmt_t port_id)

void	message_port_pub (pmt::pmt_t port_id, pmt::pmt_t msg)

void	message_port_sub (pmt::pmt_t port_id, pmt::pmt_t target)

void	message_port_unsub (pmt::pmt_t port_id, pmt::pmt_t target)

virtual bool	message_port_is_hier (pmt::pmt_t port_id)

virtual bool	message_port_is_hier_in (pmt::pmt_t port_id)

virtual bool	message_port_is_hier_out (pmt::pmt_t port_id)

pmt::pmt_t	message_ports_in ()
	Get input message port names. More...

pmt::pmt_t	message_ports_out ()
	Get output message port names. More...

void	_post (pmt::pmt_t which_port, pmt::pmt_t msg)

bool	empty_p (pmt::pmt_t which_port)
	is the queue empty? More...

bool	empty_p ()

bool	empty_handled_p (pmt::pmt_t which_port)
	are all msg ports with handlers empty? More...

bool	empty_handled_p ()

size_t	nmsgs (pmt::pmt_t which_port)
	How many messages in the queue? More...

void	insert_tail (pmt::pmt_t which_port, pmt::pmt_t msg)

pmt::pmt_t	delete_head_nowait (pmt::pmt_t which_port)

msg_queue_t::iterator	get_iterator (pmt::pmt_t which_port)

void	erase_msg (pmt::pmt_t which_port, msg_queue_t::iterator it)

virtual bool	has_msg_port (pmt::pmt_t which_port)

const msg_queue_map_t &	get_msg_map (void) const

virtual void	setup_rpc ()
	Set up the RPC registered variables. More...

bool	is_rpc_set ()
	Ask if this block has been registered to the RPC. More...

void	rpc_set ()
	When the block is registered with the RPC, set this. More...

virtual bool	check_topology (int ninputs, int noutputs)
	Confirm that ninputs and noutputs is an acceptable combination. More...

template<typename T >
void	set_msg_handler (pmt::pmt_t which_port, T msg_handler)
	Set the callback that is fired when messages are available. More...

Public Member Functions inherited from gr::msg_accepter
	msg_accepter ()

	~msg_accepter ()

void	post (pmt::pmt_t which_port, pmt::pmt_t msg)
	send `msg` to `msg_accepter` on port `which_port` More...

Public Member Functions inherited from gr::messages::msg_accepter
	msg_accepter ()

Static Public Member Functions
static sptr	make (int fftsize, int wintype, double fc, double bw, const std::string &name, int nconnections=1, QWidget *parent=NULL)
	Build a complex PSD sink. More...

Public Attributes
QApplication *	d_qApplication

Additional Inherited Members
Protected Types inherited from gr::basic_block
enum	vcolor { WHITE, GREY, BLACK }

Protected Member Functions inherited from gr::sync_block
	sync_block (void)

	sync_block (const std::string &name, gr::io_signature::sptr input_signature, gr::io_signature::sptr output_signature)

Protected Member Functions inherited from gr::block
	block (void)

	block (const std::string &name, gr::io_signature::sptr input_signature, gr::io_signature::sptr output_signature)

void	set_fixed_rate (bool fixed_rate)

void	add_item_tag (unsigned int which_output, uint64_t abs_offset, const pmt::pmt_t &key, const pmt::pmt_t &value, const pmt::pmt_t &srcid=pmt::PMT_F)
	Adds a new tag onto the given output buffer. More...

void	add_item_tag (unsigned int which_output, const tag_t &tag)
	Adds a new tag onto the given output buffer. More...

void	remove_item_tag (unsigned int which_input, uint64_t abs_offset, const pmt::pmt_t &key, const pmt::pmt_t &value, const pmt::pmt_t &srcid=pmt::PMT_F)
	DEPRECATED. Will be removed in 3.8. More...

void	remove_item_tag (unsigned int which_input, const tag_t &tag)
	DEPRECATED. Will be removed in 3.8. More...

void	get_tags_in_range (std::vector< tag_t > &v, unsigned int which_input, uint64_t abs_start, uint64_t abs_end)
	Given a [start,end), returns a vector of all tags in the range. More...

void	get_tags_in_range (std::vector< tag_t > &v, unsigned int which_input, uint64_t abs_start, uint64_t abs_end, const pmt::pmt_t &key)
	Given a [start,end), returns a vector of all tags in the range with a given key. More...

void	get_tags_in_window (std::vector< tag_t > &v, unsigned int which_input, uint64_t rel_start, uint64_t rel_end)
	Gets all tags within the relative window of the current call to work. More...

void	get_tags_in_window (std::vector< tag_t > &v, unsigned int which_input, uint64_t rel_start, uint64_t rel_end, const pmt::pmt_t &key)
	Operates like gr::block::get_tags_in_window with the ability to only return tags with the specified `key`. More...

void	enable_update_rate (bool en)

Protected Member Functions inherited from gr::basic_block
	basic_block (void)

	basic_block (const std::string &name, gr::io_signature::sptr input_signature, gr::io_signature::sptr output_signature)
	Protected constructor prevents instantiation by non-derived classes. More...

void	set_input_signature (gr::io_signature::sptr iosig)
	may only be called during constructor More...

void	set_output_signature (gr::io_signature::sptr iosig)
	may only be called during constructor More...

void	set_color (vcolor color)
	Allow the flowgraph to set for sorting and partitioning. More...

vcolor	color () const

virtual bool	has_msg_handler (pmt::pmt_t which_port)
	Tests if there is a handler attached to port `which_port`. More...

virtual void	dispatch_msg (pmt::pmt_t which_port, pmt::pmt_t msg)

Protected Attributes inherited from gr::block
std::vector< long >	d_max_output_buffer

std::vector< long >	d_min_output_buffer

gr::thread::mutex	d_setlock

gr::logger_ptr	d_logger

gr::logger_ptr	d_debug_logger

const pmt::pmt_t	d_pmt_done

const pmt::pmt_t	d_system_port

Protected Attributes inherited from gr::basic_block
std::string	d_name

gr::io_signature::sptr	d_input_signature

gr::io_signature::sptr	d_output_signature

long	d_unique_id

long	d_symbolic_id

std::string	d_symbol_name

std::string	d_symbol_alias

vcolor	d_color

bool	d_rpc_set

msg_queue_map_t	msg_queue

std::vector< rpcbasic_sptr >	d_rpc_vars

pmt::pmt_t	d_message_subscribers

Detailed Description

A graphical sink to display multiple signals in frequency.

This is a QT-based graphical sink the takes set of a complex streams and plots the PSD. Each signal is plotted with a different color, and the set_title and set_color functions can be used to change the label and color for a given input number.

The sink supports plotting streaming complex data or messages. The message port is named "in". The two modes cannot be used simultaneously, and nconnections should be set to 0 when using the message mode. GRC handles this issue by providing the "Complex Message" type that removes the streaming port(s).

This sink can plot messages that contain either uniform vectors of complex 32 values (pmt::is_c32vector) or PDUs where the data is a uniform vector of complex 32 values.

Message Ports:

freq (input): Receives a PMT pair: (intern("freq"), double(frequency)). This is used to retune the center frequency of the display's x-axis.
bw (input): Receives a PMT pair: (intern("bw"), double(bandwidth)). This is used to programmatically change the bandwidth of of the display's x-axis.
freq (output): Produces a PMT pair with (intern("freq"), double(frequency)). When a user double-clicks on the display, the block produces and emits a message containing the frequency of where on the x-axis the user clicked. This value can be used by other blocks to update their frequency setting.

To perform click-to-tune behavior, this output 'freq' port can be redirected to this block's input 'freq' port to catch the message and update the center frequency of the display.

Member Typedef Documentation

◆ sptr

typedef boost::shared_ptr<freq_sink_c> gr::qtgui::freq_sink_c::sptr

Member Function Documentation

◆ clear_max_hold()

virtual void gr::qtgui::freq_sink_c::clear_max_hold ( )

pure virtual

◆ clear_min_hold()

virtual void gr::qtgui::freq_sink_c::clear_min_hold ( )

pure virtual

◆ disable_legend()

virtual void gr::qtgui::freq_sink_c::disable_legend ( )

pure virtual

◆ enable_autoscale()

virtual void gr::qtgui::freq_sink_c::enable_autoscale ( bool en = true )

pure virtual

◆ enable_axis_labels()

virtual void gr::qtgui::freq_sink_c::enable_axis_labels ( bool en = true )

pure virtual

◆ enable_control_panel()

virtual void gr::qtgui::freq_sink_c::enable_control_panel ( bool en = true )

pure virtual

◆ enable_grid()

virtual void gr::qtgui::freq_sink_c::enable_grid ( bool en = true )

pure virtual

◆ enable_max_hold()

virtual void gr::qtgui::freq_sink_c::enable_max_hold ( bool en )

pure virtual

◆ enable_menu()

virtual void gr::qtgui::freq_sink_c::enable_menu ( bool en = true )

pure virtual

◆ enable_min_hold()

virtual void gr::qtgui::freq_sink_c::enable_min_hold ( bool en )

pure virtual

◆ exec_()

virtual void gr::qtgui::freq_sink_c::exec_ ( )

pure virtual

◆ fft_average()

virtual float gr::qtgui::freq_sink_c::fft_average ( ) const

pure virtual

◆ fft_size()

virtual int gr::qtgui::freq_sink_c::fft_size ( ) const

pure virtual

◆ fft_window()

virtual gr::filter::firdes::win_type gr::qtgui::freq_sink_c::fft_window ( )

pure virtual

◆ line_alpha()

virtual double gr::qtgui::freq_sink_c::line_alpha ( unsigned int which )

pure virtual

◆ line_color()

virtual std::string gr::qtgui::freq_sink_c::line_color ( unsigned int which )

pure virtual

◆ line_label()

virtual std::string gr::qtgui::freq_sink_c::line_label ( unsigned int which )

pure virtual

◆ line_marker()

virtual int gr::qtgui::freq_sink_c::line_marker ( unsigned int which )

pure virtual

◆ line_style()

virtual int gr::qtgui::freq_sink_c::line_style ( unsigned int which )

pure virtual

◆ line_width()

virtual int gr::qtgui::freq_sink_c::line_width ( unsigned int which )

pure virtual

◆ make()

static sptr gr::qtgui::freq_sink_c::make	(	int	fftsize,
		int	wintype,
		double	fc,
		double	bw,
		const std::string &	name,
		int	nconnections = `1`,
		QWidget *	parent = `NULL`
	)

static

Build a complex PSD sink.

Parameters

fftsize	size of the FFT to compute and display. If using the PDU message port to plot samples, the length of each PDU must be a multiple of the FFT size.
wintype	type of window to apply (see gr::fft::window::win_type)
fc	center frequency of signal (use for x-axis labels)
bw	bandwidth of signal (used to set x-axis labels)
name	title for the plot
nconnections	number of signals to be connected to the sink. The PDU message port is always available for a connection, and this value must be set to 0 if only the PDU message port is being used.
parent	a QWidget parent object, if any

◆ pyqwidget()

virtual void* gr::qtgui::freq_sink_c::pyqwidget ( )

pure virtual

◆ qwidget()

virtual QWidget* gr::qtgui::freq_sink_c::qwidget ( )

pure virtual

◆ reset()

virtual void gr::qtgui::freq_sink_c::reset ( )

pure virtual

◆ set_fft_average()

virtual void gr::qtgui::freq_sink_c::set_fft_average ( const float fftavg )

pure virtual

◆ set_fft_size()

virtual void gr::qtgui::freq_sink_c::set_fft_size ( const int fftsize )

pure virtual

◆ set_fft_window()

virtual void gr::qtgui::freq_sink_c::set_fft_window ( const gr::filter::firdes::win_type win )

pure virtual

◆ set_frequency_range()

virtual void gr::qtgui::freq_sink_c::set_frequency_range	(	const double	centerfreq,
		const double	bandwidth
	)

pure virtual

◆ set_line_alpha()

virtual void gr::qtgui::freq_sink_c::set_line_alpha	(	unsigned int	which,
		double	alpha
	)

pure virtual

◆ set_line_color()

virtual void gr::qtgui::freq_sink_c::set_line_color	(	unsigned int	which,
		const std::string &	color
	)

pure virtual

◆ set_line_label()

virtual void gr::qtgui::freq_sink_c::set_line_label	(	unsigned int	which,
		const std::string &	label
	)

pure virtual

◆ set_line_marker()

virtual void gr::qtgui::freq_sink_c::set_line_marker	(	unsigned int	which,
		int	marker
	)

pure virtual

◆ set_line_style()

virtual void gr::qtgui::freq_sink_c::set_line_style	(	unsigned int	which,
		int	style
	)

pure virtual

◆ set_line_width()

virtual void gr::qtgui::freq_sink_c::set_line_width	(	unsigned int	which,
		int	width
	)

pure virtual

◆ set_size()

virtual void gr::qtgui::freq_sink_c::set_size	(	int	width,
		int	height
	)

pure virtual

◆ set_title()

virtual void gr::qtgui::freq_sink_c::set_title ( const std::string & title )

pure virtual

◆ set_trigger_mode()

virtual void gr::qtgui::freq_sink_c::set_trigger_mode	(	trigger_mode	mode,
		float	level,
		int	channel,
		const std::string &	tag_key = `""`
	)

pure virtual

Set up a trigger for the sink to know when to start plotting. Useful to isolate events and avoid noise.

The trigger modes are Free, Auto, Normal, and Tag (see gr::qtgui::trigger_mode). The first three are like a normal trigger function. Free means free running with no trigger, auto will trigger if the trigger event is seen, but will still plot otherwise, and normal will hold until the trigger event is observed. The Tag trigger mode allows us to trigger off a specific stream tag. The tag trigger is based only on the name of the tag, so when a tag of the given name is seen, the trigger is activated.

In auto and normal mode, we look to see if the magnitude of the any FFT point is over the set level.

Parameters

mode	The trigger_mode: free, auto, normal, or tag.
level	The magnitude of the trigger even for auto or normal modes.
channel	Which input channel to use for the trigger events.
tag_key	The name (as a string) of the tag to trigger off of if using the tag mode.

◆ set_update_time()

virtual void gr::qtgui::freq_sink_c::set_update_time ( double t )

pure virtual

◆ set_y_axis()

virtual void gr::qtgui::freq_sink_c::set_y_axis	(	double	min,
		double	max
	)

pure virtual

◆ set_y_label()

virtual void gr::qtgui::freq_sink_c::set_y_label	(	const std::string &	label,
		const std::string &	unit
	)

pure virtual

◆ title()

virtual std::string gr::qtgui::freq_sink_c::title ( )

pure virtual

Member Data Documentation

◆ d_qApplication

QApplication* gr::qtgui::freq_sink_c::d_qApplication

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

freq_sink_c.h

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ sptr

Member Function Documentation

◆ clear_max_hold()

◆ clear_min_hold()

◆ disable_legend()

◆ enable_autoscale()

◆ enable_axis_labels()

◆ enable_control_panel()

◆ enable_grid()

◆ enable_max_hold()

◆ enable_menu()

◆ enable_min_hold()

◆ exec_()

◆ fft_average()

◆ fft_size()

◆ fft_window()

◆ line_alpha()

◆ line_color()

◆ line_label()

◆ line_marker()

◆ line_style()

◆ line_width()

◆ make()

◆ pyqwidget()

◆ qwidget()

◆ reset()

◆ set_fft_average()

◆ set_fft_size()

◆ set_fft_window()

◆ set_frequency_range()

◆ set_line_alpha()

◆ set_line_color()

◆ set_line_label()

◆ set_line_marker()

◆ set_line_style()

◆ set_line_width()

◆ set_size()

◆ set_title()

◆ set_trigger_mode()

◆ set_update_time()

◆ set_y_axis()

◆ set_y_label()

◆ title()

Member Data Documentation

◆ d_qApplication