Matlab Arduino I have to turn five lights on with a 0.5 second delay between each one, then keep them all on for 2 seconds, then turn them all off and repeat this 10 times. How do I repeat this?

Cycle 1: Turn lights on with 0.5 second delay between each one. Then keep them on for 2 seconds,

Then turn them all off. Repeat this 10 times.

Cycle 2: Implement another lighting pattern with no delay and they all turn on at the same time. Hold them

on for one second. Then turn them all off. Repeat 10 times

I know how to turn the lights on/off and delay them, but I need help on how to repeat them and then clear cycle 1 to go to cycle 2.

This is my starting point

clear;clc

a= arduino;

for idx = 0:10

writeDigitalPin(a,'D8',1);

pause(0.5);

writeDigitalPin(a,'D8',1);

pause(0.5);

end

Answer 1

[Prabhan Purwar]

Hi,

You can use tic and toc for this. When you run tic it starts a stopwatch style timer, you can then use toc to know the elapsed time and use a while loop to check if it is still less than your desired elapsed time.

Following is an example illustration

timelimit1 = (4*0.5+2)*10;
timelimit2 = 1*10;
start = tic;
while toc(start) < timelimit1
    % Case 1
    % Turn on one-by-one with 0.5 delay
    writeDigitalPin(a,'D8',1);
    pause(0.5);
    writeDigitalPin(a,'D9',1);
    pause(0.5);........
        % Adopt for all 5 LED pins
    pause(0.5);
    % Turn all 5 lights on
    writeDigitalPin(a,'D8',1);
    writeDigitalPin(a,'D9',1);........
        % Adopt for all 5 LED pins
    pause(2);
    %Put every pin to off state
end

start = tic;
while toc(start) < timelimit2
    % Case 2
    % Turn all 5 lights on
    writeDigitalPin(a,'D8',1);
    writeDigitalPin(a,'D9',1);........
        % Adopt for all 5 LED pins
    pause(1);
    %Put every pin to off state
end

Thanks