send array from matlab using serial communication

hello, i need your help.

i want to send array from matlab to arduino using serial communication

here is my code

s1=serial('com1','BaudRate',9600)
  fopen(s1)
A=[1,0,1,0,1,0]
fwrite(s1,A)

but it seems didnt work, because my arduino shows nothing. and can u help me how to print data which i sent?

regards,

yefta (<mailto:[e-mail] [e-mail]>)

[tamim ahmed]

what is the arduino code to receive this data in arduino. TIA

Answer 1

[Walter Roberson]

Notice that fwrite() sends binary data. And note that unless you tell MATLAB otherwise, constants such as 0 and 1 are double precision numbers, which occupy 8 bytes.

Possibly you want

fprintf(s1, '%d', A)

that would send the character string '1' '0' '1' and so on.

You might also want to send a newline to end the line:

fprintf(s1, '\n');

[Mohammad Hasan]

what is the arduino code to receive this data in arduino. TIA

[Naseeb Gill]

Hello @Walter sir, I have the same problem but in my case A may have integer values as well as decimal values. For example: A = [1.1,3,2.25,5]. How to send these values to arduino. Thanks

[Walter Roberson]

In the case where you know ahead of time which values will be integer, then something like,

 fprintf(s1, '%f\n%d\n%f\n%d\n', A)

Otherwise,

fprintf(s1, '%g\n', A)

[Naseeb Gill]

Thanks @walter Roberson for your reply. I used fprintf(s1, '%g\n', A) as you suggested but didn't get any output. I can't paste my whole code here so I open a new question for the same which link I'm giving here. It will be helful for me if you suggest solution to my problem. https://in.mathworks.com/matlabcentral/answers/336393-send-numerical-values-from-matlab-to-arduino

Thank you

Answer 2

[Yefta Devian]

hei Walter Roberson, you rock man

its work!! thankyou so much brother

regards,

yefta

[Saishka Naidoo]

Please can you attach the matlab and arduino code for what you have done.