Re: [linux-dvb] mantis vp1041 with strange diseqc rotor commands

[Simeon Simeonov <simeonov_2000@yahoo.com>]

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This is and update on the issue - it turned out that I do not get enough current so that I
can tune and drive the rotor. On both Windows and Linux side my LNBs drain about 
150 mA when connected to the Twinhan VP1041. The rotor needs about 300 mA to
move. So on the Windows side I measured about 440-450 mA when the dish was 
moving (not including a short burst at the beginning of the dish drive). But on the Linux side 
I don't seem to be able to go above 300 mA. No clue why ....
Does anyone know if the max current is controlled in some way on this cards?

Thanks in advance!

----- Original Message ----
From: Придворов Андрей <ua0lnj@bk.ru>
To: linux-dvb <linux-dvb@linuxtv.org>
Sent: Monday, February 11, 2008 3:45:02 PM
Subject: Re: [linux-dvb] mantis vp1041 with strange diseqc rotor commands

  I think, this is becouse "Initial support for Mantis VP-1041" 
not usability yet.
I use patch from Hans Werner for 1041, works better.
  ----- Original Message ----- 
  From:   Simeon 
  Simeonov 
  To: linux-dvb 
  Sent: Tuesday, February 12, 2008 6:47   AM
  Subject: [linux-dvb] mantis vp1041 with   strange diseqc rotor commands
  

Hi,

I am using the latest mantis drivers from Manu's   repository:
http://jusst.de/hg/mantis/
with my   Azureware twinhan vp1041 based card.
Locking to DVB-S channels works fine   almost all the time with the patched szap or patched mythtv.
Did not try   DVB-S2 yet. But what I am having troubles now is the diseqc. I have a switch   behind a diseqc 1.2 rotor (goto stored positions).
The switching works fine   under Windoz. I have no problems also using it with my other card in the same   box - Twinhan 102g.
Initially with the vp1041 card after a couple of diseqc   commands I would get stb0899_diseqc_fifo_empy timeout. It turned out that I   had to use some very long pauses before sending a repeat command. If 
for   the 102g standart 15ms worked fine, for the vp1041 I had to use 1s! pause.   Then the rotor will start
 moving very slowly with small steps  -   as if it is does one step , stops and then continues to the desired   position.If one is patient enough the rotor gets to the desired position. I   checked using voltmeter the voltages that come out of the card and they seem   to be good. For sending the commands I used both mythtv and hacked version of   Michel Verbraak's gotox program.
Has anyone experienced something similar   with stb0899 frontend? Perhaps you can give me an idea what might be going   wrong?

Thanks,
Simeon





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