How to send data from MATLAB to Arduino an?

58 visualizaciones (últimos 30 días)
Akarsh Sinha
Akarsh Sinha el 16 de Dic. de 2012
Comentada: Reyhane Jalil el 2 de Sept. de 2021
Hi, I was wondering how do I send data from MATLAB , say a number ,5 to my Arduino board. The board contains some code in it. For simplicity lets assume it multiplies the incoming number with 4. The output , 20 ,should be displayed in the command window. Is this possible ? I know about a.roundTrip('data') function. But the one in my query is something different. (I work on R2010a)

Respuesta aceptada

Jonathan
Jonathan el 18 de Dic. de 2012
Editada: Jonathan el 18 de Dic. de 2012
I suppose you could do it through serial connections. If you have a serial port (or a serial to USB adapter and driver) you can create and open a COM object in MatLab to communicate with the Arduino board (usually arduino terminals D0 and D1 are serial TX/RX).
The code would be something like:
arduinoCom = serial('COM3','BaudRate',9600 . . . ); % insert your serial
%properties here
sendData = 5;
fopen(arduinoCom);
fprintf(arduinoCom,'%i',sendData); %this will send 5 to the arduino
fscanf(arduinoCom) %this will read response
%or use BytesAvailableFcn property of serial
You will have to look into using the correct terminators and do a bit of configuration with that. Let me know if this makes sense. Usually terminators are something like a linefeed / carriage return or an symbol (*, $, etc.)
  2 comentarios
Akarsh Sinha
Akarsh Sinha el 29 de Mzo. de 2013
Thanks Jonathan. I've figured out another way to do it. The Arduino IO Package works perfectly.It allows you to use Simulink too.
Break  Freezy
Break Freezy el 12 de Mzo. de 2015
Please can you help me , i wanna send 4 data from matlab to arduino how to realise without taping in command of matlab ?

Iniciar sesión para comentar.

Más respuestas (4)

Nthai Papala
Nthai Papala el 19 de Nov. de 2015
I need assistance. I need to send a binary data, say random bits (1 byte for example) from one computer to the other using LED and a phototransistor. The data must be generated in matlab and be sent over a serial port through arduino. I am using matlab 2015a and Arduino Uno and i need codes for both Arduino and Mat Lab.
Thanks in advance
  3 comentarios
Busra AYDIN
Busra AYDIN el 25 de En. de 2021
hi, did you solve your problem?
Reyhane Jalil
Reyhane Jalil el 2 de Sept. de 2021
hi i have same project ...can you send me detail of your work...reyhane.jalil.karim@gmail.com

Iniciar sesión para comentar.


Rouis Jihene
Rouis Jihene el 20 de Jul. de 2017
Editada: Walter Roberson el 20 de Jul. de 2017
Hello,
I want to send a value from matlab to arduino,i tried this code but it doesn't work:
in Arduino:
void setup() {
Serial.begin(9600);}
void loop() {
if (Serial.available()) {
Serial.println(Serial.read());}
}
In matlab:
a=serial('com7');
val=20;
fopen(a);
fwrite(a,'%i',val);
fclose(a);
Do you have any solution ? Please help and thanks.

Walter Roberson
Walter Roberson el 20 de Jul. de 2017
Change
fwrite(a,'%i',val);
to
fprintf(a,'%i',val);
  6 comentarios
Walter Roberson
Walter Roberson el 20 de Jul. de 2017
Try
fprintf(a,'%d\n',val);
Rouis Jihene
Rouis Jihene el 20 de Jul. de 2017
Same problem! Do you have any other solution?(using Bluetooth or something else)

Iniciar sesión para comentar.


Syahmi Noordin
Syahmi Noordin el 29 de Abr. de 2018
Editada: Syahmi Noordin el 29 de Abr. de 2018
Hi, I want to ask about how to transfer more than one value from matlab GUI to arduino? I put 3 edit text functions in the Gui so I want the user to input value in each edit text function and those three values must be send to arduino for further calculation. Thanks.
  1 comentario
Walter Roberson
Walter Roberson el 29 de Abr. de 2018
get() the String property of the handles. fprintf(a, '%s %s %s\n', str1, str2, str3) where a is the arduino connection. This assumes that you want spaces between the strings and newline after the group of three.
You should probably do some sanity checking to be sure the strings are not empty and represent valid numbers.

Iniciar sesión para comentar.

Categorías

Más información sobre MATLAB Support Package for Arduino Hardware en Help Center y File Exchange.

Etiquetas

Productos

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by