How To Receive Data From Arduino To Matlab Using Tcpip Command

MATLAB is versatile software that can be used for wide diverseness of applications. In previous tutorials of MATLAB, we have explained how to use MATLAB to control DC motor, Servo motor and Dwelling appliances. Here in this tutorial, we will acquire how to use MATLAB for Serial Communication. For the receiving end of serial communication, nosotros are hither using Arduino.

There are two ways to setup series communication between MATLAB and Arduino, one is using control window and other is using MATLAB GUI. The Arduino code for both the methods will remain the same. If you are new to MATLAB then it is recommend to go started with simple LED blink program with MATLAB and learn the basic terminology used in MATLAB.

Components Required

MATLAB installed Laptop (Preference: R2016a or above versions)
Arduino UNO
LED (whatever colour)
Resistor (330 ohm)

Circuit Diagram

Circuit Diagram for Serial Communication between MATLAB and Arduino

Circuit Hardware for Serial Communication between MATLAB and Arduino

The above circuit diagram volition remain aforementioned for both the ways to establish series communication between MATLAB and Arduino.

Serial Communication using MATLAB Command Window

This is the elementary method to setup serial communication betwixt Arduino and MATLAB. Here we will only send the data from MATLAB to the Arduino serially using command window and and then Arduino read the incoming serial data. So this serially transmitted data tin can be used to control anything connected to the Arduino. Here we accept connected an LED to Arduino, that volition be turned on and off according to the serially received information by the Arduino.

First, upload the given Arduino code in the Arduino UNO and so start coding in MATLAB Editor Window. To open a new editor script click on 'New Script' every bit shown in below prototype:

Creating New Editor script in MATLAB

And so, re-create and paste the beneath complete MATLAB code in the editor window for series communication between MATLAB and Arduino.

          %MATLAB Lawmaking for Serial Communication between Arduino and MATLAB                    x=serial('COM18','BAUD', 9600);          fopen(x);          go = true;          while go                              a= input('Press 1 to turn ON LED & 0 to turn OFF:');          fprintf(x,a);                    if (a == 2)                      get=false;          end          finish

Code for Serial Communication between MATLAB and Arduino using Command Window

In the given code, below command is used for defining the series communication in MATLAB. Make sure the com port number is the port number on which Arduino is connected and the baud rate should be set same in the both the codes of Arduino and MATLAB.

                      x=serial('COM18','BAUD', 9600);

To open up serial port use the below command,

                      fopen(x);

Below command is used to send data from MATLAB to Arduino serially, where x is for calling series and a is the value entered by the user.

                      fprintf(x,a);

We take utilize while part for creating an infinite loop and whenever the user input the number '2' the loop volition suspension.

          while get                              a= input('Press 1 to plough ON LED & 0 to turn OFF:');          fprintf(ten,a);                    if (a == two)                      get=false;          end          terminate

After completing coding the MATLAB editor script click on ' RUN ' to run your program as shown in below image,

MATLAB takes few seconds for processing the lawmaking and get-go the serial communication, wait until MATLAB shows 'Busy' message at the bottom left corner of the software screen, equally shown in below image.

At present, yous volition run across the command window for sending the user input, we have prepare the default message,

          'Press one to turn ON LED & 0 to plough OFF:'

Default Message For taking User Input from MATLAB

Send '1' to turn on the LED, '0' to plough OFF the LED and '2' to break the performance. You tin set up any number for whatever task, all you have to do is only alter the Arduino lawmaking accordingly. Complete Arduino code is given at the end.

Sending User Input from MATLAB to Arduino

You lot can check out the video below to sympathise the complete process ofSending Series Data from MATLAB to Arduino using Control Window.

Serial Communication using MATLAB GUI

For demonstrating the Serial Communication using MATLAB GUI, nosotros will create two graphical buttons using MATLAB to plough on and off the LED connected to the Arduino. Data will exist sent serially from MATLAB to Arduino on clicking on these buttons to turn on and off the LED. Arduino will comprise the code for receiving serial data from MATLAB and controlling the LED according to series data received. Arduino lawmaking volition remain aforementioned every bit previous ane, only difference is that, previously we were sending serial data '1' and '0' through command window of MATLAB, and now the same information will be sent on clinking on two graphical buttons.

To launch the GUI, type the beneath control in the command window

          guide

A popup window will open, then select new blank GUI as shown in below image,

Now choose 2 pushbuttons for turning ON and OFF the LED, as shown below,

Creating GUI for Serial Communication between MATLAB and Arduino

To resize or to modify the shape of the buttons, just click on information technology and you will be able to drag the corners of the button. By double-clicking on pushbutton you can change the colour, string and tag of that particular button. We have customized ii buttons as shown in below picture.

Editing GUI for Serial Communication between MATLAB and Arduino

GUI for Serial Communication between MATLAB and Arduino

You can customize the buttons as per your choice. At present when you relieve this, a code will generate in the Editor window of MATLAB. Edit this code according to the task you lot want to perform by your Arduino using the MATLAB GUI. So beneath nosotros have edited the MATLAB lawmaking. Y'all can acquire more nigh Command window, editor window etc in Getting started with MATLAB tutorial.

Complete MATLAB lawmaking, for establishing Serial Communication betwixt MATLAB and Arduino is given at the end of this projection. Further we are including the GUI file (.fig) and lawmaking file(.m) hither for download (right click on link so select 'Save link every bit...'), using which you lot can customize the buttons every bit per your requirement. Below are some tweaks nosotros did for controlling the LED connected with Arduino.

Copy and paste the beneath code on line no. 74 to setup the serial port and baud rate.

          articulate all;          global x;          x=series('COM18','BAUD', 9600); % Make sure the baud rate and COM port is                      % same as in Arduino IDE          fopen(x);

Initializing Arduino and Opening Serial using MATLAB

where, fopen(10) is used to open the serial port for serial communication.

When you scroll downward, you will see that in that location are two functions created for both the Buttons in the GUI. Now write the code in both the functions according to the chore you want to perform on click.

In LED-ON button's function, re-create and paste the below code simply earlier the end of the part to plow ON the LED. As you see in the below code, fprintf(x,1) is used for sending serial data from MATLAB to Arduino series. Here we are sending 'i' to the Arduino series and if yous cheque the Arduino code, you will discover that Arduino volition glow the LED past making its xiii^th pin High, when it receives '1' on its serial port.

          global x;                      fprintf(x,1);

Serial Command to turn ON LED using MATLAB

In LED-OFF push'due south office, copy and paste the below code just before the end of the function to turn OFF the LED. Every bit you run across in the below code, fprintf(x,0) is used for sending series data from MATLAB to Arduino serial. In this part, nosotros are sending '0' to the Arduino serial and if you lot check the Arduino code, you will notice that Arduino volition plough off the LED by making its 13^thursday pin LOW, when information technology receives '0' on its series port.

          global ten;                      fprintf(x,0);

Serial Command to turn OFF LED using MATLAB

Later completing with MATLAB GUI coding and setup the hardware according to circuit diagram, but click on the run button to run the edited code in .m file.

MATLAB may have few seconds to answer, do not click on any GUI button until MATLAB shows Decorated indication, which you can see at the left lesser corner of the screen as shown beneath,

When everything is set, click on LED-ON and LED-OFF button to turn ON and OFF the LED. When y'all printing LED-ON button, 13^th pin of Arduino goes HIGH and LED connected to this Pivot starts glowing, and when you lot press LED-OFF button, thirteen^thursday pivot of Arduino goes LOW which makes the LED to plough off.

Yous can check out the video below to understand the consummate process ofSending Serial Information from MATLAB to Arduino using MATLAB GUI.

Code

Arduino Code for Series Advice between MATLAB and Arduino

int value;

void setup()
{
Serial.begin(9600);
pinMode(thirteen, OUTPUT);
}

void loop()
{
if(Serial.bachelor()>0)
{
value=Series.read();

if (value == one)
{
digitalWrite(thirteen, HIGH);
}
if(value == 0)
{
digitalWrite(xiii, Depression);
}
}
}

MATLAB Code for Serial Communication using MATLAB GUI

role varargout = final(varargin)

gui_Singleton = one;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @final_OpeningFcn, ...
'gui_OutputFcn', @final_OutputFcn, ...
'gui_LayoutFcn', [] , ...
'gui_Callback', []);
if nargin && ischar(varargin{1})
gui_State.gui_Callback = str2func(varargin{i});
end

if nargout
[varargout{ane:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
gui_mainfcn(gui_State, varargin{:});
stop

handles.output = hObject;

guidata(hObject, handles);

part varargout = final_OutputFcn(hObject, eventdata, handles)

varargout{i} = handles.output;
clear all;
global ten;
10=series('COM18','BAUD', 9600); % Make sure the baud rate and COM port is
% same every bit in Arduino IDE
fopen(x);

function turnonled_Callback(hObject, eventdata, handles)

global ten;
fprintf(x,one);

part turnoffled_Callback(hObject, eventdata, handles)

global x;
fprintf(x,0);