why matlab hangs up when i use 2 channels from analog discovery with data aquisition toolbox

Question

Leo Burgthaler 2018-6-8

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https://ww2.mathworks.cn/matlabcentral/answers/404724-why-matlab-hangs-up-when-i-use-2-channels-from-analog-discovery-with-data-aquisition-toolbox

回答： Sai Deepesh Pokala 2018-6-8

    clear
s = daq.createSession('digilent')
ch = addAnalogOutputChannel(s,'AD1', 1:2, 'Voltage')
rate = 1e6;                                          
s.Rate = rate;
outputData(:,1) = linspace(-1,1,1000);
outputData(:,2) = linspace(-2,2,1000)';
queueOutputData(s,outputData);
startForeground(s);

hi,

i whant to generate signals on two channels with analog discovery divice, with data aqisition toolbox. While using one channel there are no problems occuring. When i use two channels (with the code below) the signals gets generated, but then matlab dont stops running and i can unly quit when closing matlab.

I am very grateful for help

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Answer 1

Sai Deepesh Pokala 2018-6-8

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https://ww2.mathworks.cn/matlabcentral/answers/404724-why-matlab-hangs-up-when-i-use-2-channels-from-analog-discovery-with-data-aquisition-toolbox#answer_323833

When you install MATLAB, there is a cap on the RAM that it is allowed to occupy. Therefore, if your code involves creating temporary high-dimensional arrays or matrices, chances are it might reach that limit. Try eliminating unwanted loops or assignments. Good luck!