Data Acquisition (Really easy question)

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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

Accepted Answer

Pedro Villena
Pedro Villena on 28 Dec 2012
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);

More Answers (1)

Walter Roberson
Walter Roberson on 28 Dec 2012
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.

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