generating square wave to control a motor without using simulink

Hello I'm trying send a square pulse to an arduino board using just coding in matlab no SIMULINK I've used this so far.

 while v <=5

    for v = [0:0.1:5 5:-0.1:0]
        writePWMVoltage(a,'D9', v);
        pause(0.333);
        writePWMVoltage(a,'D3', v);
        pause(1);

this code helps to dim a light via PWM I was wondering if the pulstran() function would work to generate a square wave I have used this so far.

 y = pulstran(t,d,'rectpuls',0.03)

I need to be able to control the pulse width, has anyone done anything like this without using simulink?

Answer 1

[Nick Choi]

The 'writePWMDutyCycle' function in the MATLAB Support Package for Arduino would allow you to control the duty cycle/pulse width of the PWM signal. The following example in the documentation shows how to control the brightness of an LED using this function:

https://www.mathworks.com/help/supportpkg/arduinoio/ug/control-leds-1.html

Additional information on the 'writePWMDutyCycle' function can be found here:

https://www.mathworks.com/help/supportpkg/arduinoio/ref/writepwmdutycycle.html

[Jonathan Duncan]

I will try when I get back to my lab on holiday right now.