Messages in this thread |  | | From | Holger Schurig <> | Subject | cell-phone like keyboard driver anywhere? | Date | Wed, 21 Aug 2002 09:32:36 +0200 |
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I have to write a keyboard driver for a cell-phone like keyboard. I'm just wondering if this has been done before.
Basically, the keys are in some x/y matrix. How to decode that can be seen in drivers/char/asi_keyboard.c (after applying the patches
ftp://ftp.arm.linux.org.uk/pub/armlinux/source/kernel-patches/v2.4/patch-2.4.18-rmk7.bz2 ftp://source.mvista.com/pub/xscale/pxa/diff-2.4.18-rmk7-pxa3.gz http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=1187/1
However, this file (as any other that I have seen) assumes that there are shift, ctrl, alt etc layers. But a cell-phone like keyboard operates differently, e.g.
1 pause -> send keycode for character "a" 1 1 pause -> send keycode for character "b" 1 1 1 pause -> send keycode for character "c" 2 pause -> send keycode for character "d"
and so on.
Has anybody done things in this area?
Holger
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