[linux-dvb] Re: dvb-s USB Technotrend: unknown STC version V2.2

[Holger Waechtler <holger@qanu.de>]

Stefan Grotehans wrote:
> Holger Waechtler <holger@qanu.de> schrieb am 27.07.04 21:16:05:
>  >
>  > John Dalgliesh wrote:
>  > > On Mon, 26 Jul 2004, Stefan Grotehans wrote:
>  > >>
>  > >>1) I implemented a new tuner type in stv0299.c. Since the new box 
> ver 2.2 has a ALPS BSBE1
>  > >>tuner. This tuner model has only two small differences to the BSRU 
> tuner. However I will need
>  > >>Holgers's help to distinguesh between the old and the new USB box. 
> (should be easy though).
>  > >>This works with all versions of the driver. 1.1.1, 2.4 or 2.6.
>  > >
>  > >
>  > > Does it say stc version 2.2 for you as well? That sounds like a 
> good way
>  > > to detect it (but I still don't full understand the linux driver
>  > > architecture, so maybe this is not easy ;)
>  >
>  > you can! use the i2c->adapter name string.
>
> Yes, I did it:
>
> if ((ret = i2c->xfer(i2c, msg1, 2)) == 2) {
>    if ( strcmp(adapter->name, "Technotrend/Hauppauge Nova-USB") == 0 ) {
>                          printk ("%s: setup for tuner BSBE1 (stv0299 
> synth) on TechnoTrend hardware S1810 \n", __FILE__);
>     return ALPS_BSBE1_TT;
>    }
>
> However, this seems to fit to the old usb boxed as well?! Which would be 
> wrong.
They don't have a stv0299.

> The problem is that stv0299.c does not know the stc version which would 
> be easier.
You could assemble the name string so that it contains the STC version.



>  > >>3) the diseq stuff in the new hardware is broken with the old driver.
>  > >>
>  > >>In dvb-ttusb-budget.c the call "ttusb_update_lnb" ist not switching 
> between 13 and 18 Volt, I
>  > >>only see 18 volt. This pre! vents th! e tuning to the horizontal 
> channels.
>  > >
>  > >
> &g t; > Are you sure the code there has any effect? Isn't it the 
> frontend that
>  > > actually does the switching? I have to set up the voltage in the 
> TDA8083
>  > > on my hardware. I certainly couldn't switch voltages before doing 
> that ...
>  > > but maybe you need to do both.
>  >
>  > the LNBP21 used in these boxes can get switched via i2c or using it's
>  > input pins. You can try both approaches, send the appropriate i2c
>  > message to the LNBP, or try to toggle the input signals. In the latter
>  > case you need to find out to which pins they are connected and how to
>  > toggle the signal level of those pins.
>  >
>  > Holger
>
> The code has indeed en effect. If removing it even the 18 volt channels 
> dont tune
Have you tried to control the LNBP via it's i2c interface?

Holger