How to create a delay for a serial connection?

I created a GUI to connect to a device, however, now the device collects data before it lights up, which makes the data pointless. Can you please help figure out how to establish a 10 msec delay in the device reading? You can find the code below. The most relevant part of the code starts on line 350.

function varargout = FlexSystemGUInew(varargin)
% FLEXSYSTEMGUINEW MATLAB code for FlexSystemGUInew.fig
%      FLEXSYSTEMGUINEW, by itself, creates a new FLEXSYSTEMGUINEW or raises the existing
%      singleton*.
%
%      H = FLEXSYSTEMGUINEW returns the handle to a new FLEXSYSTEMGUINEW or the handle to
%      the existing singleton*.
%
%      FLEXSYSTEMGUINEW('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in FLEXSYSTEMGUINEW.M with the given input arguments.
%
%      FLEXSYSTEMGUINEW('Property','Value',...) creates a new FLEXSYSTEMGUINEW or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before FlexSystemGUInew_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to FlexSystemGUInew_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help FlexSystemGUInew

% Last Modified by GUIDE v2.5 29-Oct-2021 12:21:42

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @FlexSystemGUInew_OpeningFcn, ...
                   'gui_OutputFcn',  @FlexSystemGUInew_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT


% --- Executes just before FlexSystemGUInew is made visible.
function FlexSystemGUInew_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to FlexSystemGUInew (see VARARGIN)

% Choose default command line output for FlexSystemGUInew
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes FlexSystemGUInew wait for user response (see UIRESUME)
% uiwait(handles.figure1);

% Load graph
axes(handles.detectorPlot)
title('Detector 1')
delete(instrfind)

%% Serial Connection Settings                    
serialPorts=instrhwinfo('serial');
handles.nPorts=length(serialPorts.SerialPorts);
handles.serPorts = serialPorts.SerialPorts;

% Update handles structure
guidata(hObject, handles);

% --- Outputs from this function are returned to the command line.
function varargout = FlexSystemGUInew_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;

% --- Executes on button press in Auto.
function pushbutton_auto_Callback(hObject, eventdata, handles)
% hObject    handle to Auto (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%% Detector info
handles.d_num = get(handles.edit_detectors,'String');

%% Source info
handles.s_num = get(handles.edit_sources,'String');

handles.patch_num=get(handles.edit_patch,'String');

%% Wavelength info
handles.wls = split(get(handles.edit_wavelengths,'String'));
handles.wls_num = length(handles.edit_wavelengths);

set(handles.pushbutton_start,'Enable','on')
guidata(hObject, handles);

% --- Executes on button press in pushbutton_SystemEnable.
function pushbutton_SystemEnable_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton_SystemEnable (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
connection = 'Serial';
if strcmp(get(hObject,'String'),'System Disable') % currently disconnected
    
    if strcmp(connection,'Serial') == 1
    serConn=serial(handles.serPorts{3}); %'COM4'
    set(serConn,'TimeOut', 3);
    set(serConn,'BaudRate',115200)
    set(serConn,'DataBits',8)
    set(serConn,'Parity','none')
    set(serConn,'FlowControl','none')
    set(serConn,'Terminator','LF');
    set(serConn,'StopBits',1);
    end
    
     try
        %Open selected serial port, enable button functions
        fopen(serConn);
        handles.serConn=serConn;
        %Send mode commands
        configStr=':I:0'; 
        fprintf(handles.serConn,'%s',configStr);
        pause(1);
        receiveText = fgets(handles.serConn);
        set(handles.text_IncomingText,'String',receiveText)
        set(handles.pushbutton_auto,'Enable','on')
        set(handles.pushbutton_save,'Enable','on')
        set(handles.pushbutton_SendIntensity,'Enable','on')
        set(hObject,'String','System Enable')
        handles.filePath = 0;
     catch e
         errordlg(e.message);
     end
else % Disconnect after connecting
    set(hObject,'String','System Disable')
    set(handles.pushbutton_start,'Enable','off')
    set(handles.pushbutton_auto,'Enable','off')
    set(handles.pushbutton_save,'Enable','off')
    set(handles.pushbutton_saveGraph,'Enable','off')
    set(handles.pushbutton_SendIntensity,'Enable','off')
    set(handles.text_IncomingText,'String','')
    fclose(handles.serConn);
    fclose(instrfind);
    instrreset;
end
guidata(hObject, handles);

function Background_CloseRequestFcn(hObject, eventdata, handles)
if strcmp(get(handles.pushbutton_SystemEnable,'String'),'SystemDisable') % currently connected
    fclose(handles.serConn);
    fclose(instrfind);
    instrreset;
end
delete(hObject);

pushbutton_start_Callback(hObject, eventdata, handles)
pushbutton_saveGraph_Callback(hObject,eventdata,handles)

function edit_detectors_Callback(hObject, eventdata, handles)
% hObject    handle to edit_detectors (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit_detectors as text
%        str2double(get(hObject,'String')) returns contents of edit_detectors as a double


% --- Executes during object creation, after setting all properties.
function edit_detectors_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_detectors (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function edit_sources_Callback(hObject, eventdata, handles)
% hObject    handle to edit_sources (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit_sources as text
%        str2double(get(hObject,'String')) returns contents of edit_sources as a double


% --- Executes during object creation, after setting all properties.
function edit_sources_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_sources (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function edit_patch_Callback(hObject, eventdata, handles)
% hObject    handle to edit_patch (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit_patch as text
%        str2double(get(hObject,'String')) returns contents of edit_patch as a double


% --- Executes during object creation, after setting all properties.
function edit_patch_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_patch (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function edit_wavelengths_Callback(hObject, eventdata, handles)
% hObject    handle to edit_wavelengths (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit_wavelengths as text
%        str2double(get(hObject,'String')) returns contents of edit_wavelengths as a double


% --- Executes during object creation, after setting all properties.
function edit_wavelengths_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_wavelengths (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function edit_gain_Callback(hObject, eventdata, handles)
% hObject    handle to edit_gain (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit_gain as text
%        str2double(get(hObject,'String')) returns contents of edit_gain as a double


% --- Executes during object creation, after setting all properties.
function edit_gain_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_gain (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function edit_repeat_Callback(hObject, eventdata, handles)
% hObject    handle to edit_repeat (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit_repeat as text
%        str2double(get(hObject,'String')) returns contents of edit_repeat as a double


% --- Executes during object creation, after setting all properties.
function edit_repeat_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_repeat (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

% --- Executes on button press in pushbutton_start.
function pushbutton_start_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton_start (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Clear graphs
cla(handles.detectorPlot)
% Set graph titles
axes(handles.detectorPlot)
title('Detector 1')
handles.current_val = 0;
set(handles.pushbutton_stop,'UserData',false)
% Get variables
repeat_number = str2num(get(handles.edit_repeat,'String'));

% Initialize
allData = zeros(repeat_number,8); %8 for 2 patches
data = zeros(1,repeat_number*8); %8 for 2 patches
count = 0;
time = 0;
tic;
t1 = 0;
t2 = 0;

d = str2num(handles.d_num);
s = str2num(handles.s_num);
patch_num=str2num(handles.patch_num);
pds = zeros(patch_num,d);
srcs = zeros(patch_num,d);


detectorNames = strings(1,d);
for x = 1:d
    detectorNames(x) = sprintf('Detector %d',x);
end
    
% Collecting data from serial port
for i = 1:repeat_number
    set(handles.time,'String',num2str(i))
    if get(handles.pushbutton_stop,'UserData') == true
        break;
    end
   
    % Send and receive data
    configStr=':I:0';
    fprintf(handles.serConn,'%s',configStr);
    pause(.05)
    receiveText = fgets(handles.serConn);
%     set(handles.receivingText,'String',receiveText)
    while isempty(str2num(receiveText))  % Ignoring any serial text
        set(handles.receivingText,'String',receiveText)
        receiveText = fgets(handles.serConn);
    end
    
%     for index=1:3
%         pause(0.5)
%         receiveText = fgets(handles.serConn)
%     end
    

    % Storing the serial data
    data = str2num(receiveText);
    allData(i,:) = data;
    detectors = reshape(data,[patch_num,d]); % Sorting data by detector #
    if i == 1
        pds = reshape(data, [d,patch_num]);
%         for j = 1:patch_num
%             srcs(j,:) = detectors(:,j);
%         end
%         srcs2 = srcs;
    end
    % Adding to each detector data vector
    if i > 1 
        pds = [pds, reshape(data, [d,patch_num])];
        
%         for k = 1:patch_num
%             srcs(k,:) = detectors(:,k);
%         end
%         srcs2 = [srcs2, srcs];
    end
    
    len = length(pds(1,:)); % length of each vector = i*6
    handles.length = len;
    handles.frames = repeat_number;
    
% Plot Detectors
%     det_number = get(handles.popupmenu_graphDetectors,'Value');
%     axes(handles.detectorPlot)
%     cla
%     for j = 1:handles.wls_num
%         plot(pds(d*(j-1)+det_number,:))
%         hold on
%         xlim([0 len])
%         title(sprintf('Detector %d',det_number))
%         xticks(0:100:d*repeat_number)
%         xtickangle(45)
%         x = pds(d*(j-1)+det_number,:);
%         text(len,x(end),sprintf('WL%d',j))
%     end
    
    % Store data
    handles.PDS = pds;
%     handles.sources = srcs2;
    
    if ~isempty(receiveText)
        if count ~= 0
            t1 = time(count);
        end
        count = count+1;
        time(count) = toc;
        t2 = time(count);
    end
end    

handles.data = allData;
set(handles.pushbutton_save,'String','Browse')
set(handles.pushbutton_save,'Enable','on');
set(handles.edit_saveFile,'String','')

% If name fields are empty -> choose dir to save
while handles.filePath == 0
    directory = uigetdir;
    handles.filePath = directory;
end
% Auto save data to folder name
    file = uiputfile(sprintf('%s\\*.txt;*.*',handles.filePath));
    if ~isequal(file,0)
        try
        name = sprintf('%s\\%s',handles.filePath,file);
        set(handles.edit_saveFile,'String',name);
        dlmwrite(name,allData,'Delimiter','\t','newline','pc')
        set(handles.pushbutton_save,'String','Saved');
        set(handles.pushbutton_save,'Enable','off');
        catch 
            set(handles.pushbutton_save,'String','Invalid file name')
        end
    end

set(handles.pushbutton_saveGraph,'Enable','On')
guidata(hObject,handles);


function pushbutton_start_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_intensityR (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function edit_intensityR_Callback(hObject, eventdata, handles)
% hObject    handle to edit_intensityR (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit_intensityR as text
%        str2double(get(hObject,'String')) returns contents of edit_intensityR as a double


% --- Executes during object creation, after setting all properties.
function edit_intensityR_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_intensityR (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function edit_intensityG_Callback(hObject, eventdata, handles)
% hObject    handle to edit_intensityG (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit_intensityG as text
%        str2double(get(hObject,'String')) returns contents of edit_intensityG as a double


% --- Executes during object creation, after setting all properties.
function edit_intensityG_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_intensityG (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function edit_intensityB_Callback(hObject, eventdata, handles)
% hObject    handle to edit_intensityB (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit_intensityB as text
%        str2double(get(hObject,'String')) returns contents of edit_intensityB as a double


% --- Executes during object creation, after setting all properties.
function edit_intensityB_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_intensityB (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end


% --- Executes on button press in pushbutton_SendIntensity.
function pushbutton_SendIntensity_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton_SendIntensity (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
int_R = get(handles.edit_intensityR,'String');
int_G = get(handles.edit_intensityG,'String');
int_B = get(handles.edit_intensityB,'String');

configStr = sprintf(':$:%s:%s:%s',int_R,int_G,int_B);
fprintf(handles.serConn,'%s',configStr);
pause(0.5)
receiveText = fgets(handles.serConn);
set(handles.receivingText,'String',receiveText)

% --- Executes during object creation, after setting all properties.
function pushbutton_sendIntensity_CreateFcn(hObject, eventdata, handles)
% hObject    handle to Sources (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

function frequency_axes_Createfcn(varargin)



function edit_saveFile_Callback(hObject, eventdata, handles)
% hObject    handle to edit_saveFile (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit_saveFile as text
%        str2double(get(hObject,'String')) returns contents of edit_saveFile as a double


% --- Executes during object creation, after setting all properties.
function edit_saveFile_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit_saveFile (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end


% --- Executes on button press in pushbutton_save.
function pushbutton_save_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton_save (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% If no current file path, create one
if isempty(handles.filePath)
    date = datestr(now,'dd-mmm-yyyy');
    directory = uigetdir;
    handles.filePath = fullfile(directory,date);
end

file = uiputfile(sprintf('%s/*.txt',handles.filePath));
if ~isequal(file,0)
    try
        name = sprintf('%s/%s',handles.filePath,file);
        set(handles.edit_saveFile,'String',name);
        name = get(handles.edit_saveFile,'String');
        allData = handles.data;
        dlmwrite(name,allData,'Delimiter','\t','newline','pc')
        set(handles.pushbutton_save,'String','Saved');
        set(handles.pushbutton_save,'Enable','off');
    catch
        set(handles.edit_saveFile,'String','Invalid file name')
    end
end


% --- Executes on button press in pushbutton_saveGraph.
function pushbutton_saveGraph_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton_saveGraph (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- Executes on button press in pushbutton_stop.
function pushbutton_stop_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton_stop (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

[Tobias Held]

The Matlab Forum is not here to code for you...

Specify the question/ give a minimal example and look into this:

https://ch.mathworks.com/help/matlab/matlab_prog/use-a-matlab-timer-object.html

https://ch.mathworks.com/help/matlab/ref/timer.wait.html?searchHighlight=wait&s_tid=srchtitle_wait_1

Answer 1

[TED MOSBY]

Hi Karim,

I understand you want to create a 10msec delay before your device starts collecting data.

For that you can use the MATLAB’s “timer” function in your code as shown below:

% Create a timer object 
delayTimer = timer('ExecutionMode', 'singleShot', 'StartDelay', 0.01); 

% Collecting data from serial port 
for i = 1:repeat_number 
    set(handles.time,'String',num2str(i)) 
    if get(handles.pushbutton_stop,'UserData') == true 
        break; 
    end 
    
    % Start the timer 
    start(delayTimer); 
    % Wait for the timer to finish 
    wait(delayTimer); 
    
    % Send and receive data 
    configStr=':I:0'; 
    fprintf(handles.serConn,'%s',configStr); 
    receiveText = fgets(handles.serConn); 
    
    % Rest of your data collection code continues... 
        
end 

You may refer to the below documentation for more information on “timer” function:

https://www.mathworks.com/help/matlab/ref/timer.html?searchHighlight=timer&s_tid=srchtitle_support_results_1_timer

Alternatively, if that doesn’t work you can try using tic toc as below:

% Create a 10-millisecond delay

tic;

while toc < 0.01

% don’t do anything

end

For more information on tic toc refer to the below documentation:

https://in.mathworks.com/help/matlab/ref/tic.html?searchHighlight=tic%20toc&s_tid=srchtitle_support_results_1_tic%20toc

Hope this helps!