On Tue 2009-12-15 15:45:14, Jon Smirl wrote: > On Tue, Dec 15, 2009 at 3:33 PM, Pavel Machek <pavel@xxxxxx> wrote: > > On Tue 2009-12-15 15:29:51, Jon Smirl wrote: > >> On Tue, Dec 15, 2009 at 3:19 PM, Pavel Machek <pavel@xxxxxx> wrote: > >> > On Tue 2009-12-15 15:14:02, Jon Smirl wrote: > >> >> On Tue, Dec 15, 2009 at 2:58 PM, Pavel Machek <pavel@xxxxxx> wrote: > >> >> > Hi! > >> >> > > >> >> >> (11) if none is against renaming IR as RC, I'll do it on a next patch; > >> >> > > >> >> > Call it irc -- infrared remote control. Bluetooth remote controls will > >> >> > have very different characteristics. > >> >> > >> >> How are they different after the scancode is extracted from the > >> >> network packet? The scancode still needs to be passed to the input > >> >> system, go through a keymap, and end up on an evdev device. > >> >> > >> >> I would expect the code for extracting the scancode to live in the > >> >> networking stack, but after it is recovered the networking code would > >> >> use the same API as IR to submit it to input. > >> > > >> > For one thing, bluetooth (etc) has concept of devices (and reliable > >> > transfer). If you have two same bluetooth remotes, you can tell them > >> > apart, unlike IR. > >> > >> IR has the same concept of devices. That's what those codes you enter > >> into a universal remote do - they set the device. > > > > They set the device _model_. > > > >> There are three classes of remotes.. > >> Fixed function - the device is hardwired > >> Universal - you can change the device > >> Multi-function - a universal that can be multiple devices - TV, cable, > >> audio, etc > >> > >> If you set two Bluetooth remotes both to the same device you can't > >> tell them apart either. > > > > Untrue. Like ethernets and wifis, bluetooth devices have unique > > addresses. Communication is bidirectional. > > I agree with that, but the 802.15.4 remote control software I've > worked with ignores the MAC address. You set your remote to send codes > for a specific device. The mac address of the remote is ignored so > that any remote can control the device. You don't need to pair > 802.15.4 remotes like Bluetooth devices need to be paired. > > I haven't played around with a Bluetooth remote. Nothing I own can > send the signals. How can a Bluetooth remote control multiple devices > in the same room if it needs to be paired? I'd guess that bluetooth remote would be very similar to bluetooth keyboard, and present itself in a very similar way. I still believe infrared is different -- it is essentially light with very little protocol above. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
