Data Acquisition (Really easy question)

2 次查看（过去 30 天）
Shaun VanWeelden
Shaun VanWeelden 2012-12-28
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

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采纳的回答

Pedro Villena
Pedro Villena 2012-12-28
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);

更多回答（1 个）

Walter Roberson
Walter Roberson 2012-12-28
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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