Re: SerialPort.Open [Polling]?

[Benoît Minisini <benoit.minisini@xxxxxxxxxxxxxxxx>]

Le 05/06/2024 à 20:12, Claus Dietrich a écrit :
> Am 04.06.24 um 12:22 schrieb Benoît Minisini:
> > Le 04/06/2024 à 03:49, T Lee Davidson a écrit :
> > > https://gambaswiki.org/wiki/comp/gb.net/serialport/open describes the 
> > > SerialPort.Open method. But, it does not explain what the optional 
> > > Polling parameter is/does.
> > >
> > > Looking at the source code, it appears to be the interval, in 
> > > milliseconds with a default of 50ms, between polls of the serial 
> > > port, I assume, to see if there is data available to be read. Is this 
> > > correct?
> >
> > According to the source code, polling is only used if you handle one 
> > of the 'XXXChange' event. Detecting data availability is always done, 
> > and not by polling.
> >
> > Beware it does not work if you change the event observer of the 
> > SerialPort object after having created it.
> >
> > Regards,
> Hi Benoit
>
> Your reply doesn't explain the purpose of the optional polling parameter 
> and since the detection of data is always done, what are the 
> detection-criteria (i.e. byte by byte)?
>
> Best regards
>
> Claus

The optional polling parameter is there in the case you want a polling 
interval different from the default (50 ms).

As I said, polling is not used for detecting data availability, but for 
detecting the 'XXXChange' events.

Regards,

--
Benoît Minisini.