| 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 |
