Matlab only receives 1 arduino data
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    Erwin Avendaño
 el 2 de Dic. de 2019
  
    
    
    
    
    Comentada: Walter Roberson
      
      
 el 4 de Feb. de 2025
            I want to graph some data that comes from arduino to matlab but, I only graph 1 data from the series of data that I have, why? thank you very much for reading me
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function Matlab_Arduino
close all;
clc;
y=zeros(1,1000); %Vector donde se guardaran los datos
%Inicializo el puerto serial que utilizare
delete(instrfind({'Port'},{'COM13'}));
puerto_serial=serial('COM13');
puerto_serial.BaudRate=9600;
warning('off','MATLAB:serial:fscanf:unsuccessfulRead');
%Abro el puerto serial
fopen(puerto_serial);
figure('Name','Serial communication: Matlab + Arduino')
title('SERIAL COMMUNICATION MATLAB+ARDUINO');
xlabel('time');
ylabel('aceleration');
grid on;
hold on;
%graph
    ylim([0 100]);
    xlim([0 100]);
    aceleracion=fscanf(puerto_serial,'%d');
    plot(aceleration,'X-r');
fclose(puerto_serial);
delete(puerto_serial);
clear all;
end
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Respuesta aceptada
  Walter Roberson
      
      
 el 2 de Dic. de 2019
        By default, fscanf() only reads until the first terminator. When data is sent from arduino serial port, it is most common to send only one data point per packet.
You will need to loop reading data and adding it to the graph. I recommend that you look at animatedline() 
Más respuestas (1)
  Oscar
 el 4 de Feb. de 2025
        
      Editada: Oscar
 el 4 de Feb. de 2025
  
      Use readline instead of fscanf command
3 comentarios
  Walter Roberson
      
      
 el 4 de Feb. de 2025
				If you construct a serial() object, then readline() applied to the serial() object is simply not defined.
serial() objects are not recommended, having been functionally replaced by serialport() objects. readline() is defined for serialport() objects.
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