how to resolve problem with wiat statement ?

Question

MANJUNATH 2012-11-15

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/53761-how-to-resolve-problem-with-wiat-statement

i am using NI DAQ USB 6255 for data acquisition , i need to acquire the voltages from 1024 pixels so i am using "for loop " to address the pixels and the problem is , its taking way much time( 36sec) .

using wait statement will stop matlab execution and jus acquire data and store in DAQ card but writing wait syntax for 2 seconds is not working , its taking around 19 second .

plz any one help to counter this problem

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Walter Roberson 2012-11-15

Duplicate is http://www.mathworks.co.uk/matlabcentral/answers/53261-does-wait-statment-in-data-acquicition-help-to-speed-up-the-execution

MANJUNATH 2012-11-16

code

ai.analoginput('nidaq',Dev1,); addchannel(ai,0); set(ai,"sampleRate',10000); set(ai,"samplePerTrigger',2); dio=digitalio('nidaq',Dev1'); lines=addlines(dio,0:11,'out'); image=zeros(32); for y=1:32 forx=1:32 address=(y-1)*32+x; putvalue(dio,address); start(ai); wait(ai,2); data=getdata(ai); image(y,x)=mean(data); end; end; imshow(image);

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