On Jan 15, 2011, at 4:56 PM, Andy Walls wrote: > On Sat, 2011-01-15 at 01:56 -0500, Jarod Wilson wrote: >> On Jan 15, 2011, at 12:37 AM, Jarod Wilson wrote: > >>>>>>>> Registered IR keymap rc-hauppauge-new >>>>>>>> input: i2c IR (HD PVR) as /devices/virtual/rc/rc1/input6 >>>>>>>> rc1: i2c IR (HD PVR) as /devices/virtual/rc/rc1 >>>>>>>> ir-kbd-i2c: i2c IR (HD PVR) detected at i2c-1/1-0071/ir0 [Hauppage HD PVR I2C] > >> Okay, last spam before I head off to bed... :) >> >> I can get ir-kbd-i2c behavior to pretty much match lirc_zilog wrt key repeat, >> by simply setting init_data->polling_interval = 260; in hdpvr-i2c.c, which >> matches up with the delay in lirc_zilog. With the 260 interval: > > RC-5 has a repetition interval of about 4096/36kHz = 113.8 ms, IIRC. > > Using 260 ms, you are throwing away one repeat from the remote for sure, > maybe two. Yep. From lirc_zilog: /* * This is ~113*2 + 24 + jitter (2*repeat gap + * code length). We use this interval as the chip * resets every time you poll it (bad!). This is * therefore just sufficient to catch all of the * button presses. It makes the remote much more * responsive. You can see the difference by * running irw and holding down a button. With * 100ms, the old polling interval, you'll notice * breaks in the repeat sequence corresponding to * lost keypresses. */ But as noted previously, even that doesn't result in correct behavior from lircd/irw's standpoint. > Maybe that will help you understand what may be going on. > (I've lost the bubble on hdpvr with ir-kbd-i2c.) Not yet. After reading that comment in the code, I'd actually though that something in the 113 to 130 range might actually be the ticket. I still think that's probably correct, but it didn't make the wacky repeats stop, so I think I need to instrument lirc_zilog and/or ir-kbd-i2c a bit more to get a better idea what's going on. Oh, and while drifting off to sleep last night, I think I came upon an explanation for why things behave as they do with that 260ms interval. The rc_keydown() call has an automatic key release after 250ms. -- Jarod Wilson jarod@xxxxxxxxxxxx -- 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
