[Gambas-user] serial port

[Benoît Minisini]

> Hello,
> 
> At the end it works almost fine to try to open the serial port and if no
> error I suppose that it works.
> Now I try to use it. I do the same for ttyS0..S9.
> 
> On the ttyS0 it finds the serial port correctly, on the S1, S3-S9 it finds
> out that there is no serial port.
> On the ttyS2 it finds something (no error when I open). I don't know what
>  it is and no idea how to find out.
> 
> For those where I found the port, I ask for the equipment ID to identify if
> it's there or not. OK for the S0, but the ttyS2 completely freeze and when
>  I try to close the port there is no reaction.
> 
> In such a case (TRY mySerialPort.close --- no response, no error message
>  but the program frozen) is there any way to stop the process with a
>  timeout or does anyone has an ide ho to handle it?
> 
> Any help would be appreciated.
> 
> Robi
> 

Apparently when closing a serial port, the gb.net component does not just call 
the close() system call.

Can you break the frozen program with gdb and see where it is locked?

$ gdb /usr/bin/gbx2 <pid of frozen program>
...
(gdb) bt
...

Send me the result of the 'bt' command.

Regards,

-- 
Benoît Minisini