Error refreshing com ports
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My computer is connected to a LED light source over a virtual com port. The LED light source crashes from time to time. If this is the case, I have to restart it, which I can do over this com port (the crash is a power failure. The light source is not working properly anymore, but I still can communicate with it). The problem is, that after the restart, I'm not anymore able to connect to it. I'm trying to establish a new connection with
connection = serial('COM14','BaudRate',9600);
fopen(connection)
If I execute the fopen command, I get the following error message:
Error using serial/fopen (line 72)
Open failed: Port: COM14 is not available. Available ports: COM12,
COM14, COM15.
Use INSTRFIND to determine if other instrument objects are connected to
the requested device.
If I restart Matlab, I am able to reconnect. Do you know if there is any workaround?
14 Comments
Walter Roberson
on 15 Nov 2019
delete() the serial port object when you are through with it. Consider using an onCleanup() in case of a code crash
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