Matlab only receives 1 arduino data

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Erwin Avendaño
Erwin Avendaño 2019-12-2
评论： Walter Roberson 2025-2-4
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
<<<<<<<<<<<<<<<<<<CODE>>>>>>>>>>>>>>>>>>>>>>>>>><<
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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采纳的回答

Walter Roberson
Walter Roberson 2019-12-2
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()

更多回答（1 个）

Oscar
Oscar 2025-2-4
编辑：Oscar 2025-2-4
Use readline instead of fscanf command
  3 个评论
显示 1更早的评论
Oscar
Oscar 2025-2-4
But so far it's easier., thanks for your comment.
Walter Roberson
Walter Roberson 2025-2-4
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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