hi why my while loop is never end? it running continuously.

function y = fcn
%#codegen
y=0;
i=0;
coder.extrinsic ('fprintf');
while(i<10)
    if(y==1)
        y=0;
        fprintf('on\n');
    else
        y=1;
        fprintf('off\n');
    end
    i = i+ 1;
    fprintf('i=%d\n',i);
end

[Alex Sune]

It is ok. It stops when i == 10

[KAMALAKANNAN R]

No its is running continuously.I tried

[Alex Sune]

try with a for loop instead

[KAMALAKANNAN R]

run in a matlab function block of simulink.

[KAMALAKANNAN R]

Same problem

[Geoff Hayes]

How is fcn being called? Perhaps it is being called continuously and so creates the illusion that the while loop never ends.

[KAMALAKANNAN R]

how to solve it?

[Geoff Hayes]

How is fcn being called?

[KAMALAKANNAN R]

[Walter Roberson]

Is it showing i= with numbers greater than 10? Or is it cycling showing 1 to 10 over and over again?

Your function would be invoked once per time step, so if you are running more than one time step it is going to repeat multiple times.

[KAMALAKANNAN R]

can u clear me how can i invoke my function once per time step?

[Walter Roberson]

It should already be invoked once per time step if you are using discrete time. If you are using continuous time then I am not sure how often it would get invoked.

The problem I see is that you are running for multiple time steps rather than just having the function invoked at initialisation time.