MATLAB: Serial Port Reading with matlab

serialserial port reading with matlab

clear all;
p=serial('COM2','BaudRate',9600,'DataBits',8);
set(p,'Parity','none');
set(p,'Terminator','LF');
fopen(p);
son=100;
figure 
xlabel('zaman')
ylabel('veri')
title('veri okuma')
grid on;
hold on;
for t=1:1:son
      ylim([0 50])
      xlim([1 100])
      veri=fscanf(p,'%f');
      plot(t,veri);
      drawnow
  end
fclose(p);
delete(p);
clear all
I want to read volue from seria port and with plot I wanna see graphic but there is a warning
 Unsuccessful read: A timeout occurred before the Terminator was reached.
I dont solve problem.Help

Best Answer

Either the remote device is not active, or it is not using 9600 baud, or it is not using LF as its line terminator, or it is not responding to you (such as if it is waiting for you to say something to it first.) Or there could be a cabling problem.
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