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authorPaul Mundt <lethal@linux-sh.org>2008-10-31 16:18:02 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-10-31 16:18:02 +0900
commit0803d540db06f53acd2fabf1347d5b665218f14a (patch)
treef5f8e5510a76bb59d3583478961daf5afc32df08 /Documentation/arm/empeg/ir.txt
parenta8884e3415c29c58a5875d54c109c4a7fcaa6fb4 (diff)
parent721d5dfe7e516954c501d5e9d0dfab379cf4241a (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
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-Infra-red driver documentation.
-
-Mike Crowe <mac@empeg.com>
-(C) Empeg Ltd 1999
-
-Not a lot here yet :-)
-
-The Kenwood KCA-R6A remote control generates a sequence like the following:
-
-Go low for approx 16T (Around 9000us)
-Go high for approx 8T (Around 4000us)
-Go low for less than 2T (Around 750us)
-
-For each of the 32 bits
- Go high for more than 2T (Around 1500us) == 1
- Go high for less than T (Around 400us) == 0
- Go low for less than 2T (Around 750us)
-
-Rather than repeat a signal when the button is held down certain buttons
-generate the following code to indicate repetition.
-
-Go low for approx 16T
-Go high for approx 4T
-Go low for less than 2T
-
-(By removing the <2T from the start of the sequence and placing at the end
- it can be considered a stop bit but I found it easier to deal with it at
- the start).
-
-The 32 bits are encoded as XxYy where x and y are the actual data values
-while X and Y are the logical inverses of the associated data values. Using
-LSB first yields sensible codes for the numbers.
-
-All codes are of the form b9xx
-
-The numeric keys generate the code 0x where x is the number pressed.
-
-Tuner 1c
-Tape 1d
-CD 1e
-CD-MD-CH 1f
-Track- 0a
-Track+ 0b
-Rewind 0c
-FF 0d
-DNPP 5e
-Play/Pause 0e
-Vol+ 14
-Vol- 15