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[linux-dvb] Re: how to determine signal strength under linux ?
On Thu, 5 Jul 2001, Johannes Stezenbach wrote:
> Adi Pop wrote:
> >
> > >From: "Martin Hoffmann" <ma.hoff@t-online.de>
> > >is there a way to determine the signal strength of the broadcast ?
>
> > Here you have an app. called sdb - maybe it helps (I didn't try it myself)
> > http://www.panteltje.demon.nl/satellite/
> > Unfortunately I think that it's working just with the old driver (version <=0.8) :-(
>
> The attached piece of code does it with the new API.
>
> However, the VES1893 data sheet says "NEST[7:0] is the current value
> of the noise power estimation. It gives an estimation of signal quality
> and can be useful to point a dish."
>
> So you might want to use the FE_READ_SNR ioctl instead of
> FE_READ_SIGNAL_STRENGTH. Or both.
> The scaling factors in my code are derived from Jan Pantelje'sdb, but
> one day the driver might adhere to the docs and give us the
> correct values directly...
> http://www.linuxtv.org/developer/dvb_api/frontend.xml
>
>
> Regards,
> Johannes
>
> -- No attachments (even text) are allowed --
> -- Type: text/plain
> -- File: signalstrength.c
>
>
>
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I am very happy you ported it to the new API, but there is not attachment.
Where can I find it?
Regards
Jan
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