AW: [mythtv] (Hauppauge DVB-s Nova / Hauppauge WinTV DVB-s) patch
ke-aa at frisurf.no
Mon Jun 14 13:22:28 EDT 2004
On Monday 14 June 2004 18:32, Christian Höhle wrote:
> > What is the equipment connected to the card?
> > Sounds like you only have a single LNB
> > connected directly to the card by the comments in the patch?
> That's right. I have a two single LNBs connected to my two cards.
So you have an universal LNB which does not support setting the polarization
via voltage and high/low via tone..strange.
> > Also, have you tried the diseqc_type 1 (ToneSwitch) and 0
> > (ToneVoltageLnb)?
> I tried both, but the result stays the same.
> > Most diseqc switches have compatability mode with ToneSwitch,
> > and if you only have a LNB directly connected to your card,
> > you would be better off with just using ToneVoltageLnb,
> > since that gives much faster zapping.
> What do you mean with "faster zapping"? The time between starting a tuning
> and the message "successfully tuned to ..." is much less than a second for
> me. Then, mythtv seems to prebuffer a bit which lasts for approx. 2
> seconds, then I have got the output on tv.
2004-06-14 16:50:36 DVB#0 Successfully tuned to channel 3 (50ms).
Channel on same satellite, but different frequency, same pol:
2004-06-14 18:02:55 DVB#0 Successfully tuned to channel 21 (66ms).
Different satellite, different pol:
2004-06-14 19:07:51 DVB#0 Successfully tuned to channel 5 (113ms).
These are very variable, because I have a CAM which does not always want to
start decrypting right away (in the same order as above):
2004-06-14 17:21:25 First frame after pause. (224ms)
2004-06-14 18:03:02 First frame after pause. (4663ms)
2004-06-14 19:07:56 First frame after pause. (2622ms)
> I use diseq_type 0 at the moment, that's why my changes are located mainly
> inside ToneVoltageLnb().
> Before I clean it up and adopt the changes to other functions which could
> need it, I wanted to hear from a "professional" wether my patch isn't
> useless or stupid at all ;-)
> It seems to me that the szap-code contains a polarization- and
> frequency-dependent diseq command, whereas neither ResetDiseqc() nor any of
> ToneSwitch or ToneVoltageLnb contains something similar (as far as I can
> //cmd.cmd.msg = 0xf0 | (((0 * 4) & 0x0f)
> // | ((tuning.tone == SEC_TONE_ON) ? 1 : 0) |
> // ((tuning.voltage == SEC_VOLTAGE_13) ? 0 : 2));
> On the other hand, szap sets the tone to "SEC_TONE_OFF" before applying the
> other settings. Perhaps my cards are a little bit non-standard in that way.
I'm no diseqc expert or professional, but could you check if a clean cvs
version with the following patch would work ok for you?
I can't see anything else different if you use diseqc_type == 2, except for
the DiseqcReset that essentially only powers up the diseqc equipment.
RCS file: /var/lib/mythcvs/mythtv/libs/libmythtv/dvbdiseqc.cpp,v
retrieving revision 1.4
diff -u -r1.4 dvbdiseqc.cpp
--- dvbdiseqc.cpp 11 Apr 2004 15:14:39 -0000 1.4
+++ dvbdiseqc.cpp 14 Jun 2004 17:19:04 -0000
@@ -223,7 +223,7 @@
- if (ioctl(fd_frontend, FE_DISEQC_SEND_BURST, SEC_MINI_A ) == -1)
+ if (ioctl(fd_frontend, FE_DISEQC_SEND_BURST, SEC_MINI_B ) == -1)
More information about the mythtv-dev