Is there an other commande in previous matlab version which remplace the commande "serialportlist" ?

Hello every one,

Is there an other commande in previous matlab version which remplace the commande "serialportlist" ?

Im using matlab 2013b, and this commande doen't exist (I think that exist in 2019

Answer 1

[Ameer Hamza]

Previously there were instrfind() and instrfindall().

[islam dib]

Thank you soo much.

What I didn't understand is this index

What I understand is that the availble COM et is "COM3"

>> instrfindall()

   Instrument Object Array

   Index:    Type:     Status:   Name:  
   1         serial    closed    Serial-COM3
   2         serial    closed    Serial-COM3
   3         serial    closed    Serial-COM3
   4         serial    closed    Serial-COM3
   5         serial    closed    Serial-COM3
   6         serial    closed    Serial-COM3
   7         serial    open      Serial-COM3

>> instrfind

   Instrument Object Array

   Index:    Type:     Status:   Name:  
   1         serial    closed    Serial-COM3
   2         serial    closed    Serial-COM3
   3         serial    closed    Serial-COM3
   4         serial    closed    Serial-COM3
   5         serial    closed    Serial-COM3
   6         serial    closed    Serial-COM3
   7         serial    open      Serial-COM3

[Ameer Hamza]

The index shows that how many times you created a serial object for 'COM3' without deleting it.

It seems that you are repeatedly creating a serial port object in your code. Whenever you create a serial object, make sure to delete it at the end

s = serial('COM3', ..)
fopen(s);
% write your code
fclose(s);
delete(s)

That will avoid the instrfind to grow uselessly.

[islam dib]

Thank ypu soo much

Really appreciate ur answer.

Good luck

[Ameer Hamza]

I am glad to be of help!