How to create Alarm Clock using GUIDE in MATLAB?

This video explains the steps to create an Alarm Calculator in MATLAB using GUIDE.

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Source code:

function varargout = myAlarmClock(varargin)
% MYALARMCLOCK MATLAB code for myAlarmClock.fig
% MYALARMCLOCK, by itself, creates a new MYALARMCLOCK or raises the existing
% singleton*.
%
% H = MYALARMCLOCK returns the handle to a new MYALARMCLOCK or the handle to
% the existing singleton*.
%
% MYALARMCLOCK(‘CALLBACK’,hObject,eventData,handles,…) calls the local
% function named CALLBACK in MYALARMCLOCK.M with the given input arguments.
%
% MYALARMCLOCK(‘Property’,’Value’,…) creates a new MYALARMCLOCK or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before myAlarmClock_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to myAlarmClock_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 myAlarmClock

% Last Modified by GUIDE v2.5 24-Mar-2018 18:59:47

% Begin initialization code – DO NOT EDIT
gui_Singleton = 1;
gui_State = struct(‘gui_Name’, mfilename, …
‘gui_Singleton’, gui_Singleton, …
‘gui_OpeningFcn’, @myAlarmClock_OpeningFcn, …
‘gui_OutputFcn’, @myAlarmClock_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 myAlarmClock is made visible.
function myAlarmClock_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 myAlarmClock (see VARARGIN)

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

% Update handles structure
guidata(hObject, handles);

set(handles.text2, ‘String’, datestr(datetime(‘now’)));
set(handles.edit1, ‘String’, datestr(datetime(‘now’)));

% UIWAIT makes myAlarmClock wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% — Outputs from this function are returned to the command line.
function varargout = myAlarmClock_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;

function edit1_Callback(hObject, eventdata, handles)
% hObject handle to edit1 (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 edit1 as text
% str2double(get(hObject,’String’)) returns contents of edit1 as a double
% — Executes during object creation, after setting all properties.
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit1 (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 pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton1 (see GCBO)
% eventdata reserved – to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)

Alarm_time = datevec(get(handles.edit1, ‘String’));

if(etime(Alarm_time, clock)<0)
set(handles.text5, ‘Visible’, ‘on’);
set(handles.text2, ‘String’, datestr(datetime(‘now’)));
return;
end
while(etime(Alarm_time, clock)>0.5)
set(handles.text2, ‘String’, datestr(datetime(‘now’)));
set(handles.text5, ‘Visible’, ‘off’);
drawnow;
end

y = audioread(‘beep.mp3’);
sound(y);

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