Em Fri, 24 Nov 2017 10:52:04 +0200
Maksym Veremeyenko <ve...@m1stereo.tv> escreveu:
> Hi,
>
> there is a code in function *dvbsat_diseqc_set_input*:
>
> [...]
> /* Negative numbers means to not use a DiSEqC switch */
> if (parms->p.sat_number < 0)
> return 0;
> [...]
>
> if it mean /there is no DiSEqC switch/ then LNB's *polarity* and *band*
> settings still should be applied - attached patch fixes that behavior.
>
> if it mean /current DVB is a slave/ i.e. it is connected to LOOP OUT of
> another DVB, so no need to configure anything, then statement above is
> correct and no patches from this email should be applied.
No, it actually means that there's no DiSEqC at all; the LNBf
is a bandstacking one, where different polarities use different
LO, like on those LNBf:
{
.desc = {
.name = N_("Big Dish - Multipoint LNBf"),
.alias = "C-MULT",
},
.freqrange = {
{ 3700, 4200, 5150, 0, POLARIZATION_R },
{ 3700, 4200, 5750, 0, POLARIZATION_L }
},
}, {
.desc = {
.name = N_("BrasilSat Amazonas 1/2 - 2 Oscilators"),
.alias = "AMAZONAS",
},
.freqrange = {
{ 11037, 11360, 9670, 0, POLARIZATION_V },
{ 11780, 12150, 10000, 0, POLARIZATION_H },
{ 10950, 11280, 10000, 0, POLARIZATION_H },
},
},
The case where the LNBf accepts DiSEqC commands, but there's no
switch will work just fine, as the switch control data will be
silently ignored.
Ok, removing them could reduce a little bit the tuning time, at
the expense of making harder for the user, as he would need to
select between 4 different DiSEqC situations:
- no DiSEqC at all;
- DiSEqC LNbf, no DiSEqC switch;
- DiSEqC LNbf, DiSEqC switch with 2 ports (miniDiSEqC);
- DiSEqC LNbf, DiSEqC switch with 4 ports.
The way the code is, if DiSEqC is selected, it will send both
mini-DiSEqC (if satellite number < 2) and DiSEqC commands, so,
all 3 DiSEqC cases will be covered by just one configuration.
Regards,
Mauro
