Re: [Gumstix-users] Using the UCB1400 as a TS controller

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On Mon, Dec 1, 2008 at 4:14 PM, Chris Dollar <chr...@gm...> wrote:
> Hi Lisandro,
>
> I've worked with the touchscreen controller on the ucb1400 without
> issue in the past. A couple of things to check:
>
> 1. I'm pretty sure the ucb1400_ts kernel module is not loaded by
> default -- have you modprobed it? (check 'lsmod' to see)

lsmod shows it, so it loads.

> 2. If you 'cat /proc/interrupts' you should see an entry for the
> ucb1400 -- that number should increment every time you press the
> touchscreen, so make sure that is working. The ucb1400 generates an
> interrupt to the pxa every time it is touched, and in the case of the
> gumstix boards (audiostix and the like) this interrupt line on the
> ucb1400 is connected to GPIO16 (PWM0) on the gumstix, so if you are
> using that line for some other purpose you won't see the interrupts
> generated by the touchscreen and it will appear to not function.

I have that working, I can see the number of interrupts increasing.
The TS it's still not working, so I guess I still need to configure
something else.

$ ls -al /dev/input/
crw-r-----    1 root     root      13,  64 Jan  1 00:00 event0
lrwxrwxrwx    1 root     root            6 Jan  1 00:00 touchscreen0 -> event0

$ cat /etc/profile.d/tslib.sh
#!/bin/sh

TSLIB_TSDEVICE=/dev/input/touchscreen0

export TSLIB_TSDEVICE

So that part should be working.

In /etc/ts.conf I commented out the line:

# Uncomment if you wish to use the linux input layer event interface
module_raw input grab_events=0

and uncommented:

# Uncomment if you're using a device with a UCB1200/1300/1400 TS interface
module_raw ucb1x00

Looking at [0] I checked for the env. variables  TSLIB_TSDEVICE,
TSLIB_CONFFILE, TSLIB_PLUGINDIR and TSLIB_CALIBFILE. The only one
setted is the first one. I am using matchbox, perhaps I should be
looking at some other thing :-/

> If you search the mailing list archives I posted a note to the list
> titled 'touchscreen success' that gives an overview of how I got an
> lcd+touchscreen working with a gpsstix and connex motherboard.

I couldn't find this :-(

Thank you in advance, Lisandro.

[0] <http://www.nabble.com/Specifying-tslib-for-DirectFB-touchscreen-input-driver-td17327192.html#a19221341>

-- 
Lisandro Damián Nicanor Pérez Meyer
http://perezmeyer.com.ar/
http://perezmeyer.blogspot.com/