Data acquisition using Arduino Uno. I controlled the Arduino Uno board through Matlab. How can I control the sampling rate and the acquisition time? I post my codes. Thank you!

Hello Everyone! I am using Arduino Uno for data acquisition. My sampling rate is 1 kHz. I am doing the sampling through Matlab.I am controlling the Arduino Uno Board through Matlab. For some reason, my function loop infinitely. Can anyone help me figure out what I am doing wrong.

{

myArduino = arduino('COM4','Uno');

% Configure Arduino A0 = 0; myArduino.configureAnalogPin(A0,'Input');

Fs = 1000; % Sampling rate Ts = 1/Fs; % Sampling Period t1 = 0; % Sampling starting time t2 = 60; % Duration of collection in second t = t1:Ts:t2; % Data acquisition Time range n = length(t); % Length of the time matrix

voltage = zeros(n,1); % Initializing the voltage matrix time = zeros(n,1); % Initializing the time matrix

for i=1:n time(i) = t(i); voltage(i) = myArduino.readVoltage(A0);

end

}

[Geoff Hayes]

Paul - as your function iterates from 1 to 60001 (given your sampling rate), it isn't looping "infinitely" but it could be just getting stuck waiting for a return from readVoltage. Have you stepped through the code to see what is happening? Or, try adding the following fprintf statement to display something on each iteration of the loop

 for i=1:n
     fprintf('at iteration %d \n',i);
     % etc.
 end

The above may give you a clue as to when you are getting stuck.