epspi(varargin)

function varargout = epspi(varargin)
% EPSPI M-file for epspi.fig
%      EPSPI, by itself, creates a new EPSPI or raises the existing
%      singleton*.
%
%      H = EPSPI returns the handle to a new EPSPI or the handle to
%      the existing singleton*.
%
%      EPSPI('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in EPSPI.M with the given input arguments.
%
%      EPSPI('Property','Value',...) creates a new EPSPI or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before epspi_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to epspi_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 epspi

% Last Modified by GUIDE v2.5 19-Jun-2008 12:21:29

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @epspi_OpeningFcn, ...
                   'gui_OutputFcn',  @epspi_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 epspi is made visible.
function epspi_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 epspi (see VARARGIN)

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

% Update handles structure
guidata(hObject, handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = epspi_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 selection change in popupmenu2.
function popupmenu2_Callback(hObject, eventdata, handles)
% hObject    handle to popupmenu2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns popupmenu2 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from popupmenu2


% --- Executes during object creation, after setting all properties.
function popupmenu2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to popupmenu2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: popupmenu 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)

load xxxx.mat
figure
imshow(xxxx)
clear xxxx



% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

pop=findobj(epspi,'Tag','popupmenu2');
contents=get(pop,'Value');

%Number of samples for the final output signal(SPWM number of samples)
switch(contents)
    case 1
        NN=1024;
    case 2
        NN=1024*2;
    case 3
        NN=1024*4;
    case 4
        NN=1024*8;
    case 5
        NN=1024*16;
end
%--------------------------------------------------------------------
%Preparing the sawtooth signal,,,

%Frequency of the sawtooth signal(Hz)
N=NN/2;
counter=0;
%Making the sawtooth signal
for k=1:2*N
    counter=ceil(k/(2*N)*100);
    clc
    sprintf('Percentage Completed = ')
    sprintf('%d',counter)
   for j=1:50
      i=j+(k-1)*50;
      wt(i)=i*pi/(N*50);
      if rem(k,2)==0
         Vt(i)=(0.02*j-0.5)*2;
      else
         Vt(i)=(1-0.02*j-0.5)*2;
      end
   end
end
%--------------------------------------------------------------------
%Preparing the plotting areas

figure
subplot(4,1,1)
plot(wt(1:1000),Vt(1:1000),'r')
axis([0,2*pi/100,-1.2,1.2])
grid on
title('Carrier Signal')
%--------------------------------------------------------------------

subplot(4,1,2)
temp=0:2*pi/NN:2*pi;
temp(1)=[];
x=1*sin(temp);
plot(temp,x,'r')
axis([0,2*pi,-1.2,1.2])
grid on
title('Reference Signal')
%--------------------------------------------------------------------

subplot(4,1,3)
plot(wt,Vt,'r')
axis([0,2*pi,-1.2,1.2])
hold on
plot(temp,x,'b')
axis([0,2*pi,-1.2,1.2])
grid on
title('Compination of Carrier & Reference Signals')
%--------------------------------------------------------------------

subplot(4,1,4)
for z=1:length(temp)
    if(x(z)>Vt(z))
        y(z)=1;
    else
        y(z)=0;
    end
end
plot(temp,y,'*',temp,y,'r')
axis([0,2*pi,-1.2,1.2])
grid on
title('Comparison Result (SPWM)')

set(epspi,'Visible','on')
%--------------------------------------------------------------------



% --- Executes on button press in pushbutton3.
function pushbutton3_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

pop=findobj(epspi,'Tag','popupmenu2');
contents=get(pop,'Value');

save ccc contents
epspimdl
set(epspi,'Visible','off')