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-rw-r--r--Documentation/arm/empeg/README13
-rw-r--r--Documentation/arm/empeg/ir.txt49
-rw-r--r--Documentation/arm/empeg/mkdevs11
3 files changed, 73 insertions, 0 deletions
diff --git a/Documentation/arm/empeg/README b/Documentation/arm/empeg/README
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+Empeg, Ltd's Empeg MP3 Car Audio Player
+
+The initial design is to go in your car, but you can use it at home, on a
+boat... almost anywhere. The principle is to store CD-quality music using
+MPEG technology onto a hard disk in the unit, and use the power of the
+embedded computer to serve up the music you want.
+
+For more details, see:
+
+ http://www.empeg.com
+
+
+
diff --git a/Documentation/arm/empeg/ir.txt b/Documentation/arm/empeg/ir.txt
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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
diff --git a/Documentation/arm/empeg/mkdevs b/Documentation/arm/empeg/mkdevs
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+#!/bin/sh
+mknod /dev/display c 244 0
+mknod /dev/ir c 242 0
+mknod /dev/usb0 c 243 0
+mknod /dev/audio c 245 4
+mknod /dev/dsp c 245 3
+mknod /dev/mixer c 245 0
+mknod /dev/empeg_state c 246 0
+mknod /dev/radio0 c 81 64
+ln -sf radio0 radio
+ln -sf usb0 usb