[Mono-dev] SerialPort and Ring Indicator signal

[Carlos Alberto Cortez]

Hey,

The functionality for serial port inside kernel32.dll allows to access
the RING signal (the wrapper class makes public the access to it), but
it's only available on Windows (kernel32.dll is a core windows library).
Of course you could try to wrap some functionality in Unix systems
-using termios and ioctl interfaces- in a new class.

But from the System.IO.Ports.SerialPort is not possible to access that
pin signal -because of the api compatibility-.

For monitoring the RING signal -only checking its state-, take a look at
SerialPort.SerialPinChange event (observe that RING signal is not yet
monitored, although doing it is a matter of adding some constants in a
pair of places). I will take a look at it on the weekend.

Carlos.

El mar, 23-05-2006 a las 09:53 +0200, jfm escribió:
> Thank you Carlos for your answer
> I'm not sure I've well undestound but here are some information about
> the app I'm porting.
> As serial port are not supported in .Net 1, the app was using the
> Rs232.vb class that is wide spread accros the internet... This class
> is some kind of wrapper upon the kernel32.dll... I'm not sure these
> informations are of any help...
> In you mail you said that RI can be monotored with events ?? please
> could you give mon hints about this ??? this could be a solution for
> me !
> Thank you.
> 
> Jean-François
> 
> PS : please forget my English ;)
> 
> Carlos Alberto Cortez wrote: 
> > Well, RING indicator can't be directly used (as opossed to Cts, Dsr, CD,
> > Rts and Dtr). The public API in .Net does not expose this indicator
> > directly (you can only monitor it based on the events).
> > 
> > Of course we could add it to the get_signal_code () function and
> > retrieve it. But the real problem is that we can't add it - we must keep
> > compatibility with .Net API.
> > 
> > Probably this is achieved in some way - since you mentioned that you are
> > porting a .Net app-. But in that case, we must have additional info -and
> > some code-.
> > 
> > Carlos.
> > 
> > El lun, 22-05-2006 a las 18:58 +0200, jfm escribió:
> >   
> > > Hi,
> > > I'm porting a program running on microsoft .net to mono. This program 
> > > uses modem information like Dsr and Cts but it also uses RI (ring 
> > > indicator).
> > > My problem is that RI doesn't seem to be supported (see enum 
> > > MonoSerialSignal in the get_signal_code function in serial.c), am I right ?
> > > If yes, I could make the modification, I think it is only few lines 
> > > (adding a new entry to the enum and a if with TIOCM_RI (defined in 
> > > ioctl-type.h) in the function but it might involve recompiling a lots of 
> > > thing and I don't know how to do.
> > > 
> > > Best regards
> > > 
> > > Jean-François
> > > _______________________________________________
> > > Mono-devel-list mailing list
> > > Mono-devel-list at lists.ximian.com
> > > http://lists.ximian.com/mailman/listinfo/mono-devel-list
> > >     
> > 
> > 
> >   
>