[Gambas-user] SerialPort: RS232 DTR problem

Tobias Boege taboege at ...626...
Sat Jan 3 15:40:58 CET 2015


On Fri, 02 Jan 2015, Beno?t Minisini wrote:
> Le 16/12/2014 15:52, Tobias Boege a ?crit :
> > Hi,
> >
> > [ this is a forwarded bug report -- and this time I'm only translating. I
> >    don't understand any of these hardware things. If there are questions
> >    left, don't hesitate; ]
> >
> > a user complains that SerialPort.DTR is buggy on his system: after
> > initialisation, this property is False and the voltage is -12V.
> >
> > Setting it to True works and the voltage raises to +12V. But setting it to
> > False afterwards does nothing: the property continues to return True the
> > voltage remains on +12V. The needed hardware is an RS232 or an RS232-USB
> > adapter.
> >
> > He says it worked with Gambas2 and he first noticed that it didn't with
> > Gambas 3.1.1 (from the Ubuntu repositories). I urged him to update and the
> > error still happens with 3.6.2.
> >
> > Attached is the project we came up with to reproduce the issue. He also
> > mentioned that behaviour changed slightly when he left out the graphical
> > component he initially used his project with: with a graphical component,
> > the hardware didn't react and the property remained True and without a
> > graphical component, the hardware reacts correctly, only the property gives
> > the wrong value -- if I got him right.
> >
> > Regards,
> > Tobi
> >
> 
> Does the last revision (#6792) change anything?
> 

He says no.

-- 
"There's an old saying: Don't change anything... ever!" -- Mr. Monk




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