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MyLogger.m
6f4abf3a154aTekRSA-Freq-vs-Time

MyLogger.m
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			% Generic logger that executes MeasFcn according to MeasTimer, stores the
			% results and optionally continuously saves them.
			% MeasFcn should be a function with no arguments.
			% MeasFcn need to return a row vector of numbers in order to save the log
			% in text format or display it. With other kinds of returned values the
			% log can still be recorded, but not saved or dispalyed.

			classdef MyLogger < handle

			properties (Access=public)
			% timer object
			MeasTimer

			% Function that provides data to be recorded
			MeasFcn = @()0

			save_cont = false

			% MyLog object to store the recorded data
			Record
			end

			properties (SetAccess=protected, GetAccess=public)
			% If last measurement was succesful
			% 0-false, 1-true, 2-never measured
			last_meas_stat = 2
			end

			events
			% Event that is triggered each time MeasFcn is successfully executed
			NewData
			end

			methods (Access=public)
			function this = MyLogger(varargin)
			P=MyClassParser(this);
			processInputs(P, this, varargin{:});

			this.Record=MyLog(P.unmatched_nv{:});

			% Create and confitugure timer
			this.MeasTimer = timer();
			this.MeasTimer.BusyMode = 'drop';
			% Fixed spacing mode of operation does not follow the
			% period very well, but is robust with respect to
			% function execution delays
			this.MeasTimer.ExecutionMode = 'fixedSpacing';
			this.MeasTimer.TimerFcn = @(~,event)LoggerFcn(this,event);
			end

			function delete(this)
			%stop and delete the timer
			stop(this.MeasTimer);
			delete(this.MeasTimer);
			end


			% Redefine start/stop functions for the brevity of use
			function start(this)
			start(this.MeasTimer);
			end

			function stop(this)
			stop(this.MeasTimer);
			end

			end

			methods (Access=protected)
			% Perform measurement and append point to the log
			function LoggerFcn(this, event)
			time = datetime(event.Data.time);
			try
			meas_result = this.MeasFcn();
			this.last_meas_stat=1; % last measurement ok
			catch
			warning(['Logger cannot take measurement at time = ',...
			datestr(time)]);
			this.last_meas_stat=0; % last measurement not ok
			end

			if this.last_meas_stat==1
			% append measurement result together with time stamp
			appendData(this.Record, time, meas_result,...
			'save', this.save_cont);
			triggerNewData(this);
			end
			end

			%Triggers event for acquired data
			function triggerNewData(this)
			notify(this,'NewData')
			end
			end

			%% Set and get functions
			methods
			function set.MeasFcn(this, val)
			assert(isa(val,'function_handle'), ...
			'''MeasFcn'' must be a function handle.');
			this.MeasFcn=val;
			end

			function set.Record(this, val)
			assert(isa(val,'MyLog'), '''Record'' must be a MyLog object')
			this.Record=val;
			end

			function set.save_cont(this, val)
			this.save_cont=logical(val);
			end

			function set.MeasTimer(this, val)
			assert(isa(val,'timer'), '''MeasTimer'' must be a timer object')
			this.MeasTimer=val;
			end
			end
			end

rINSTCONTROL/@MyLogger/MyLogger.m6f4abf3a154aTekRSA-Freq-vs-Time

MyLogger.mView Options

rINSTCONTROL/@MyLogger/MyLogger.m
6f4abf3a154aTekRSA-Freq-vs-Time

MyLogger.m
View Options