detect USB port using names

twinsen01

in Integration and Hardware • 1 year ago

Hi, I need to make an arduino to speak with processing without manually setting the com port. I can't use expression like this one:

arduinoPort = new Serial(this, Serial.list()[13], 9600) ;

because I can't know on wich port arduino is attached to, and people that uses my program may be do not know what port they must set.
I thought to scan all the port to find the one with the arduino attached to, but when I try to speak with a busy port an exception arises. Do you know if there is a way to know the device name attached to the COM from processing?
thanks

Replies(4)

PhiLho

Re: detect USB port using names

1 year ago

Isn't Serial.list() providing such information?
Note also you can catch exceptions and continue your scanning.

twinsen01

Re: detect USB port using names

1 year ago

First of all PhiLho thanks for answering me

The problem is exactly about exception:
i try this

        try{
        myPort = new Serial(this, Serial.list()[i], 9600) ;      // Open port "i" in list
      }

    catch (PortInUseException piue) {

        System.out.println("exc");
        portAvailable=false;
        myPort.stop();
    }

But the compiler say "cannot find a class or type named PortInUseException"
I have tried to copy the file "Serial.java" in my project folder but it does not work anyway..

PhiLho

Re: detect USB port using names

1 year ago

Quick search: add
import javax.comm.PortInUseException;
to your sketch.
Also see the recent topic:

twinsen01

Re: Re: detect USB port using names

1 year ago

thanks

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