Max Thrun wrote: > On Thu, Mar 4, 2010 at 3:14 PM, Jim Paris <jim@xxxxxxxx> wrote: > > > Antonio Ospite wrote: > > > On Wed, 3 Mar 2010 23:55:33 -0500 > > > Jim Paris <jim@xxxxxxxx> wrote: > > > > > > > Antonio Ospite wrote: > > > [...] > > > > > > > > > > I see. It would be interesting to see how Powerline Frequency > > filtering > > > > > is done on PS3. I added Jim Paris on CC. > > > > > > > > Hi Antonio and Mosalam, > > > > > > > > I tried, but I can't capture that. My USB logger only does USB 1.1, > > > > which is too slow for the camera to run normally, but good enough to > > > > see the initialization sequence. However, the 50/60Hz option only > > > > appears later, once the PS3 is receiving good frame data. > > > > > > > > I can open up the camera and sniff the I2C bus instead. It'll take > > > > a little longer. > > > > > > > > > > Thanks for your time Jim. > > > > No problem, glad to help. > > Looks like Mosalam's patch is correct: > > > > --- i2c-60hz.log 2010-03-04 15:09:23.000000000 -0500 > > +++ i2c-50hz.log 2010-03-04 15:09:27.000000000 -0500 > > @@ -69,7 +69,7 @@ > > ov_write_verify 8C E8 > > ov_write_verify 8D 20 > > ov_write_verify 0C 90 > > -ov_write_verify 2B 00 > > +ov_write_verify 2B 9E > > ov_write_verify 22 7F > > ov_write_verify 23 03 > > ov_write_verify 11 01 > > > > I'll attach the full logs. > > > > -jim > > > > Jim, I'm really interested in how you went about sniffing the bus. Can you > share some details about what you use to do it? Sure. I borrowed one of these from a friend: http://www.totalphase.com/products/beagle_ism/ and tapped the GND, SCL, and SDA pins off the camera EEPROM. I exported a CSV from the Beagle software and used a quick Perl script to parse it into a more useful read/write/write_verify format. -jim -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
