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
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