The code for P&O MPPT is as follows.function [Y,Stage_out,Pold_out]=Perturb_and_Observe_MPPT(P_new,P_old,Delay,Yin,Stage_in) c=0.05;Pold_out=P_old;Y=Yin;Stage_out= Stage_in;if Delay == 0 if Stage_in==0 if P_new>P_old Y=Yin+c; Pold_out=P_new; elseif P_new<P_old ...