Data Acquisition (Really easy question)

I am trying to write a couple functions to interact with a MCC 1208LS sensor board and specifically trying to turn an led bar with 8 different lights on or off. I have made a function that does this, but it is slow as molasses and I know for a fact there is a better way, I just don't know what it is.

I have my function below and I am looking for a more speedy/optimal/less-sketchy way to code it. Thanks for the help! If I need to add comments I can do so, otherwise I think my goal is extremely intuitive.

if true
  function [] = putDigitalData(ledNums, value)
  %Sets state of LED light board

    global dioLine

    DIO = digitalio('mcc','0');

    if isempty(dioLine)
        dioLine = addline(DIO,0:7,1,'out');
    end

    for i=1:length(ledNums)

        putvalue(dioLine(ledNums(i)),value)

    end

    end
  end

Answer 1

[Pedro Villena]

global dioLine ledsLine

DIO = digitalio('mcc','0');
if isempty(dioLine)
  dioLine = addline(DIO,0:7,1,'out');
  ledsLine = [0 0 0 0 0 0 0 0];
end

ledsLine(ledNums) = value;
putvalue(dioLine,ledsLine);

Answer 2

[Walter Roberson]

Whenever possible, initialize digitalio and addline outside of any loop, so that the function you call only outputs values and does not have to construct the lines.