How to handle fopen error preventing the script to stop?

Hi to you all,

I'm using matlab to communicate with a microcontroller and send data over UART.

To initialize the serial communication I use fopen. The problem is that oftet I plug and unpload the board from my computer and the port changes.

under Linux I see either ttyACM1 or ttyACM2.

When Matlab does not ind the port i got this

Error using serial/fopen (line 72)
Open failed: Port: /dev/ttyACM1 is not available. Available ports: /dev/ttyACM0, /dev/ttyS4.
Use INSTRFIND to determine if other instrument objects are connected to the requested device.

Error in initialize_NXP (line 14)
fopen(serial_object);

And the script stops. Is there a way to handle this and call fopen on ttyACM2?

BR,

Andrea