Opening of serial port during GUI formation.
Hello everyone,
I am trying to create a GUI which uses serial port for communication. Here, I the GUI runs but I have to everytime open or pass the command to open the serial port when ever I have to communicate.
Is their a possible way by which I can open port just once inside the classdef method instead of writting it again and again in method (static) and opening it again and again. It consumes time and the GUI becomes slow.
I will kindly request, to please help to suggest ways by which I can open serial port only once and then communicate with it as many times as possible.
I have also attached a sample code specifying my current problem.
Thanking you,
Kind regards
classdef classEl < handle
properties
fig
daq
UI
position_limits
position_read_1
end
properties (SetObservable, AbortSet) % for listeners
position
pre_value
end
methods
function obj = classEl() % constructor
obj.position_limits = [0, 360];
addlistener(obj,’position’,’PostSet’,@classEl.handlePropEvents);
obj.position = [0 0 0 0]; % initial
obj.pre_value =[0 0 0 0];
obj.fig = uifigure( ‘Name’,class(obj),’Position’, [100 100 979 446]);
…
…
end
end
methods (Static)
function handlePropEvents(src,evnt)
obj = evnt.AffectedObject;
switch src.Name
case {‘position’,’pre_value’}
if(obj.pre_value(1) ~= obj.position(1))
serial_port =serialport("COM4",9600);
…
elseif(obj.pre_value(2) ~= obj.position(2))
serial_port =serialport("COM4",9600);
…
end
end
end
end
endHello everyone,
I am trying to create a GUI which uses serial port for communication. Here, I the GUI runs but I have to everytime open or pass the command to open the serial port when ever I have to communicate.
Is their a possible way by which I can open port just once inside the classdef method instead of writting it again and again in method (static) and opening it again and again. It consumes time and the GUI becomes slow.
I will kindly request, to please help to suggest ways by which I can open serial port only once and then communicate with it as many times as possible.
I have also attached a sample code specifying my current problem.
Thanking you,
Kind regards
classdef classEl < handle
properties
fig
daq
UI
position_limits
position_read_1
end
properties (SetObservable, AbortSet) % for listeners
position
pre_value
end
methods
function obj = classEl() % constructor
obj.position_limits = [0, 360];
addlistener(obj,’position’,’PostSet’,@classEl.handlePropEvents);
obj.position = [0 0 0 0]; % initial
obj.pre_value =[0 0 0 0];
obj.fig = uifigure( ‘Name’,class(obj),’Position’, [100 100 979 446]);
…
…
end
end
methods (Static)
function handlePropEvents(src,evnt)
obj = evnt.AffectedObject;
switch src.Name
case {‘position’,’pre_value’}
if(obj.pre_value(1) ~= obj.position(1))
serial_port =serialport("COM4",9600);
…
elseif(obj.pre_value(2) ~= obj.position(2))
serial_port =serialport("COM4",9600);
…
end
end
end
end
end Hello everyone,
I am trying to create a GUI which uses serial port for communication. Here, I the GUI runs but I have to everytime open or pass the command to open the serial port when ever I have to communicate.
Is their a possible way by which I can open port just once inside the classdef method instead of writting it again and again in method (static) and opening it again and again. It consumes time and the GUI becomes slow.
I will kindly request, to please help to suggest ways by which I can open serial port only once and then communicate with it as many times as possible.
I have also attached a sample code specifying my current problem.
Thanking you,
Kind regards
classdef classEl < handle
properties
fig
daq
UI
position_limits
position_read_1
end
properties (SetObservable, AbortSet) % for listeners
position
pre_value
end
methods
function obj = classEl() % constructor
obj.position_limits = [0, 360];
addlistener(obj,’position’,’PostSet’,@classEl.handlePropEvents);
obj.position = [0 0 0 0]; % initial
obj.pre_value =[0 0 0 0];
obj.fig = uifigure( ‘Name’,class(obj),’Position’, [100 100 979 446]);
…
…
end
end
methods (Static)
function handlePropEvents(src,evnt)
obj = evnt.AffectedObject;
switch src.Name
case {‘position’,’pre_value’}
if(obj.pre_value(1) ~= obj.position(1))
serial_port =serialport("COM4",9600);
…
elseif(obj.pre_value(2) ~= obj.position(2))
serial_port =serialport("COM4",9600);
…
end
end
end
end
end serial port, gui, time saving MATLAB Answers — New Questions
