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Matlab GUI

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Tee
Tee on 6 Apr 2011
Commented: Brayan Reyes on 21 Nov 2017
I have some question on obtain data from arduino which connect to optical encoder. I have using following code to obtain data from Arduino
function encoder1pushbutton9_Callback(hObject, eventdata, handles)
handles.a.pinMode(2,'input');
handles.a.digitalRead(2)
numberOfDatas = 200;
data = zeros(1, numberOfDatas);
i = 1;
% Main graph figure
figure(1);
hold on;
title('Incomming Data from External Device');
xlabel('Data Number');
ylabel(' output (0-1)');
for i=1:numberOfDatas
% Get the data from the serial object
data(i) = handles.a.digitalRead(2);
% Plot the data
figure(1);
plot(i, data(i), 'm*');
drawnow;
end
Did i have to set the Baudrate, databits and stopbits to acquire data from arduino???

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Answers (2)

Walter Roberson
Walter Roberson on 6 Apr 2011
Everyone else that I have seen discussing the Arduino has been using the serial port to do the reading, not digital I/O. How exactly is your Arduino connected to the system you are running Matlab on?

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Tee
Tee on 6 Apr 2011
I connect my arduino to 2 cytron optical encoder, digital pin 2 and digital pin 4 to signal pin at encoder
Walter Roberson
Walter Roberson on 6 Apr 2011
Perhaps this File Exchange Contribution demonstrating communications and control will help:
http://www.mathworks.com/matlabcentral/fileexchange/27843-arduino-io-package-slides-and-examples
Tee
Tee on 6 Apr 2011
Another question, the code i write only collect data ,for example 200 data,got any code can i write to know how many data transfer in 1 second?

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Tee
Tee on 6 Apr 2011
I using digital I/O to control my motor through Matlab GUI, therefore i using digital I/O to acquire data from Arduino

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Brayan Reyes
Brayan Reyes on 21 Nov 2017
How was it?

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