% Runs for 5 seconds (i.e., 5/60 minutes)
T = 5/60; % minutes
ti = datetime('now');
tf = datetime('now');
while (minutes(tf-ti) < T)
% Do stuff
% Update current time
tf = datetime('now');
end
seconds(tf-ti) % Should be the same as T (in seconds), or
minutes(tf-ti) % Should be the same as T (in minutes)
But you can't rely on this for precise timing.
