From: Matthias Schwarzott <zzam@gentoo.org>
To: Antti Palosaari <crope@iki.fi>
Cc: linux-media@vger.kernel.org, Ulf <mopp@gmx.net>
Subject: Re: Hauppauge HVR-900 HD and HVR 930C-HD with si2165
Date: Wed, 16 Oct 2013 06:50:56 +0200 [thread overview]
Message-ID: <525E1B30.9040801@gentoo.org> (raw)
In-Reply-To: <525316A6.3010608@iki.fi>
On 07.10.2013 22:16, Antti Palosaari wrote:
> On 07.10.2013 22:30, Matthias Schwarzott wrote:
>> my real problem currently is, that I cannot get a good usb dump:
>> 1. In virtual machine (win xp under kvm) it finds one transponder when
>> scanning DVB-T, but does not get a picture.
>
> I think demod locks (== means signal is OK and demod streams data),
> but stream got lost somewhere on kvm. I have had similar experiences
> many years back when I tested some virtual machines.
Hi Antti,
You were absolutely right here. Using the USB sniffs from the virtual
machine, I got a picture. So only the stream seems to get lost.
I did this by using these steps:
* Record data: tcpdump -i usbmon1 -w win-tune.tcpdump
* Start virtual machine and tune
* Convert to usbsniff format: parse_tcpdump_log.pl win-tune.tcpdump
* Run parse_cx231xx.pl on it (so i2c transfers can be seen)
* Format it by my own parse-si2165.py
With this I get code of 4700 i2c sends/receives.
When adding a msleep(1) into my si2165_read function, I get a picture
most of the tries.
This is for DVB-T with fixed set of parameters.
Regards
Matthias
next prev parent reply other threads:[~2013-10-16 4:51 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-17 11:30 Hauppauge HVR-900 HD and HVR 930C-HD with si2165 Ulf
2013-08-17 11:53 ` Antti Palosaari
2013-08-18 11:54 ` Hans Petter Selasky
2013-08-18 12:15 ` Antti Palosaari
2013-08-18 19:02 ` Steven Toth
2013-08-19 19:47 ` Hans Petter Selasky
2013-08-19 20:09 ` Antti Palosaari
2013-08-19 22:43 ` Konstantin Dimitrov
2013-08-20 6:46 ` Hans Petter Selasky
2013-08-20 8:26 ` nibble.max
2013-08-20 8:43 ` Hans Petter Selasky
[not found] ` <52426BB0.60809@gentoo.org>
[not found] ` <52444AA3.8020205@iki.fi>
2013-10-01 5:34 ` Matthias Schwarzott
2013-10-01 14:45 ` Antti Palosaari
2013-10-07 19:30 ` Matthias Schwarzott
2013-10-07 20:16 ` Antti Palosaari
2013-10-16 4:50 ` Matthias Schwarzott [this message]
2013-10-16 10:21 ` Antti Palosaari
2013-10-07 20:21 ` pierigno
2013-10-15 18:52 ` Matthias Schwarzott
-- strict thread matches above, loose matches on Subject: below --
2013-08-18 15:00 Ulf
2013-08-18 15:23 ` Hans Petter Selasky
2013-08-18 15:26 ` Antti Palosaari
2013-08-18 18:58 ` Steven Toth
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