Timer to sample real-time input.

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Amr 2020-12-30

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/705178-timer-to-sample-real-time-input

Hi,

I am using Simulink to make a model of some sort that is interfaced with an Arduino Uno. The part where I need help in involves a sensor reading that is being stored on startup for purpose of calculating the offset. So I have a MATLAB Function block that does so, the code inside is as follows:

function y = fcn(u)
    u_calc = 0;
    for i = 1:10
       u_calc = u_calc + u;
       pause('0.1');
    end
    u_calc = u_calc/10;
y = u-u_calc;

Now to have ensure that there is a different sample on each loop, typically using the Arduino IDE I will just use a delay() function that has value higher than the sensor sample time - let's say it is 0.1 sec. Now making the code in this manner resulted in a problem where the whole model paused, I attached a display to the input and it shows nothing until (0.1*10) sec has elapsed. Is the offeset calculated right? or is the approach I used to simulate a delay() or for sampleing is wrong?