How to code a stopwatch in MATLAB App designer
In this video a show you how to code as simple stopwatch in MATLAB App designer. Just shared the thought process i went through to make this. i have coded it a while back and today i just had to think a bit to remember what i did before.
The work load becomes so huge these days that basically nothing moves forward. So to laugh at the life pressure I decided to make a new video. Dear life, if you are going to challenge me with a lot of pressure, I am going to accept the challenge and add some more on to of what you have for me.
Finance:
N=8, subs=190
Available budget (N):
190-100-8*(8+1)=18
Storage limit:
2^ln(190)=37.97
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The code:
You must place its part under right functions/properties
%%%%%%%%%%%%%%%%%
properties (Access = private)
a=1; % Description
end
%%%%%%%%%%%%%%%%%
function startupFcn(app)
app.EditField.Value='00:00:00'
app.EditField.FontSize=40;
end
%%%%%%%%%%%%%%%%%
function STARTButtonPushed(app, event)
S_ini=0;
if strcmp(app.STARTButton.Text,'CONTINUE')
st=app.EditField.Value;
h=0;m=0;s=0;
for i=1:size(st,2)
if strcmpi(st(i),':')
break
end
h=[h st(i)];
end
for i=i+1:size(st,2)
if strcmpi(st(i),':')
break
end
m=[m st(i)];
end
for i=i+1:size(st,2)
if strcmpi(st(i),':')
break
end
s=[s st(i)];
end
S_ini=str2num(h)*3600+str2num(m)*60+str2num(s);
app.STARTButton.Text='START';
app.STOPButton.Text='STOP';
end
c=clock;
m=0;
S_tot=0;
app.a=0;
while app.a==0
c1=clock;
if c1(5)~=c(5)
S_tot=c1(6)-c(6)+60;
m=m+1;
c(5)=c1(5);
else
S_tot=c1(6)-c(6)+60*m;
end
S_tot=S_tot+S_ini;
A(1)=floor(S_tot/3600);
A(2)=floor((S_tot-A(1)*3600)/60);
A(3)=S_tot-A(1)*3600-A(2)*60;
app.EditField.Value=sprintf('%02.0f:%02.0f:%02.2f',A(1),A(2),A(3));
% app.EditField.Value=[num2str(A(1)) ':' num2str(A(2)) ':' num2str(A(3))];
% app.EditField.Value=num2str(S_tot);
pause(0.01);
end
end
%%%%%%%%%%%%%%%%%
function STOPButtonPushed(app, event)
if strcmpi(app.STOPButton.Text,'RESTART')
app.EditField.Value='00:00:00';
app.STARTButton.Text='START';
app.STOPButton.Text='STOP';
return
end
if app.a==0
app.a=1;
app.STARTButton.Text='CONTINUE';
app.STOPButton.Text='RESTART';
end
end
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