How to make a step function from 2 volts to 2.5 volts in matlab using Arduino? (without Simulink and step matlab function itself)

Hi everyone

Recently I asked how can I make a step function with writePWMVoltage in arduino MEGA 2560 and matlab.

The idea is to pass from 2 volts to 2.5 volts. Here is my program:

clc

clear all

a = arduino;

writePWMVoltage(a,'D5',2);

for k = 1:1000

writePWMVoltage(a,'D5',2);

if k>=250

writePWMVoltage(a,'D5',2.5);

end

end

When I do this, in some point the voltimeter sizes 2,23 volts before to reach 2.5 volts, and I need the function step (from 2 volts direct to 2,5 volts)

Can you help me please?

Thank you

Answer 1

[Madhu Govindarajan]

What if you changed your code to the following -

clc
clear all
a = arduino;
writePWMVoltage(a,'D5',2);
for k = 1:1000
   if k>=250
    writePWMVoltage(a,'D5',2.5);
   else 
    writePWMVoltage(a,'D5',2);
   end
end 

Answer 2

[Jonathan Bijman]

thank u so much. it really helps.

thank u again!