view Documentation/arm/empeg/ir.txt @ 524:7f8b544237bf

netfront: Allow netfront in domain 0.

This is useful if your physical network device is in a utility domain.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue Apr 15 15:18:58 2008 +0100 (2008-04-15)
parents 831230e53067
line source
1 Infra-red driver documentation.
3 Mike Crowe <mac@empeg.com>
4 (C) Empeg Ltd 1999
6 Not a lot here yet :-)
8 The Kenwood KCA-R6A remote control generates a sequence like the following:
10 Go low for approx 16T (Around 9000us)
11 Go high for approx 8T (Around 4000us)
12 Go low for less than 2T (Around 750us)
14 For each of the 32 bits
15 Go high for more than 2T (Around 1500us) == 1
16 Go high for less than T (Around 400us) == 0
17 Go low for less than 2T (Around 750us)
19 Rather than repeat a signal when the button is held down certain buttons
20 generate the following code to indicate repetition.
22 Go low for approx 16T
23 Go high for approx 4T
24 Go low for less than 2T
26 (By removing the <2T from the start of the sequence and placing at the end
27 it can be considered a stop bit but I found it easier to deal with it at
28 the start).
30 The 32 bits are encoded as XxYy where x and y are the actual data values
31 while X and Y are the logical inverses of the associated data values. Using
32 LSB first yields sensible codes for the numbers.
34 All codes are of the form b9xx
36 The numeric keys generate the code 0x where x is the number pressed.
38 Tuner 1c
39 Tape 1d
40 CD 1e
41 CD-MD-CH 1f
42 Track- 0a
43 Track+ 0b
44 Rewind 0c
45 FF 0d
46 DNPP 5e
47 Play/Pause 0e
48 Vol+ 14
49 Vol- 15