[linux-dvb] questions about STV0229_LOCKOUTPUT

Andrew de Quincey adq_dvb at lidskialf.net
Thu Nov 10 14:25:42 CET 2005


On Thursday 10 Nov 2005 13:00, Andrew de Quincey wrote:
> On Wednesday 09 Nov 2005 01:34, Oliver Endriss wrote:
> > Andrew de Quincey wrote:
> > > On Tuesday 08 Nov 2005 20:35, Oliver Endriss wrote:
> > > > Imho the dish support in stv0299.c should be replaced by a generic
> > > > implementation in dvb_frontend.c which can be used by all frontends.
> > > > It should be easy to replace the stv0299-specific set_voltage stuff
> > > > by fe->ops->set_voltage() calls.
> > >
> > > I seem to remember asking the original author about that when he added
> > > it. He said the problem was that it is really timing specific - he had
> > > to specifically optimise the stv0299 code so that it met the
> > > requirements. I don't have any dish networks hardware myself so I can't
> > > confirm or deny this.
> >
> > Neither do I.
>
> I had a quick look over that code. Basically it transmits a 9 bit command
> byte using 13v/18v levels to represent 0/1. I didn't see any reason why it
> wouldn't be possible to move the signalling algorithm itself into the
> dvb_frontend core code, where it would just call the appropriate frontend
> set_voltage methods. Of course, timing is very important using such a
> simple method - so we'll have to see.
>
> If I have a go at developing that, would someone with suitable dish
> networks equipment be able to test a couple of patches?

I'm talking absolute rubbish. I didn't spot the generic implementation of the 
dish networks protocol which is already present in dvb_frontend.c, sorry.



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