nanogui: Setting up TouchScreen for AT91SAM9261-EK
Subject:
Re: [nanogui] Setting up TouchScreen for AT91SAM9261-EK
From:
"Uwe Klatt" ####@####.####
Date:
25 Jan 2007 13:07:58 +0000
Message-Id: <006501c74081$c157e3f0$081710ac@arnstein.miwe.de>
Hello,
>The
> strange thing i encountered is although using the command: "cat
> /dev/ts0 > output" returns 16 bytes for each event.
> I encountered the following error:
> Wrong number of bytes 8 read from touch panel (expected 16)
> Below is a series of output from 4 events on roughly the same point:
> 4C 1D 9A 00 97 00 CB 00 00 00 9A 00 97 00 B8 0B
> 4C 1D 9B 00 99 00 F3 23 00 00 9B 00 99 00 14 05
> 4C 1D 9B 00 99 00 A7 1F 00 00 9B 00 99 00 E4 25
> 4C 1D 9C 00 9B 00 03 19 00 00 9C 00 9B 00 34 21
> My guess is
> struct ts_event {
> short dummy
> short x;
> short y;
> short pressure;
> };
If you get 16 Bytes you need a ts_event structure with 16 Bytes ;-)
e.g.
struct ts_event {
short dummy
short x;
short y;
short pressure;
short dummy2;
short dummy3;
short dummy4;
short dummy5;
};
Youl have to find out the data format of your touch controller...
Bye
Uwe
