I had the same problem with a debian rootfs, when using: sudo ts_calibrate I worked around it by setting a root password, then su to root, set the environmental variables, and then running ts_calibrate as root. I haven't gotten around to finding a proper solution, but this should be one way to get around the problem.
On Thursday, February 20, 2014 8:43:15 AM UTC-5, Mickae1 wrote: > > Hi, > > can you explain me how did you manage to make the tslib work ? because > I've done the samething : > > sudo apt-get install libts-bin > > /etc/ts.conf contains > > module_raw input > module pthres pmin=1 > module variance delta=30 > module dejitter delta=100 > module linear > > export TSLIB_CONSOLEDEVICE=none > export TSLIB_CONFFILE=/etc/ts.conf > export TSLIB_CALIBFILE=/etc/pointercal > export TSLIB_TSDEVICE=/dev/input/event1 > export TSLIB_FBDEVICE=/dev/fb0 > #export TSLIB_PLUGINDIR=/usr/lib/ts > export TSLIB_PLUGINDIR=/usr/lib/arm-linux-gnueabihf/ts0 > export TSLIB_TSEVENTTYPE=INPUT > > debian@arm:~$ sudo ts_calibrate*ts_open: No such file or directory* > > > > > > > > > > > > > On Wed, Feb 19, 2014 at 7:54 PM, brian larochelle > <[email protected]<javascript:> > > wrote: > >> Summary: After a successful ts_calibration and ts_test, ts_test shows >> varying results after reboots. >> >> I am connecting a beaglebone black to a 16 bpp, 4 wire touchscreen/LCD. >> The lcd is working beautifully, but I am having an issue with the >> touchscreen. I am connecting AIN0-3 directly to the up, down, left, and >> right pins of the touchscreen via breadboard and breakoutboard. >> >> I can boot up a 3.8 RCN kernel with a custom device tree overlay (and >> also a modified 3.2 kernel), I can run ts_calibrate and ts_test and get >> perfect results. >> >> The problem occurs on reboots, sometimes the results of ts_test are near >> perfect, sometimes they are off by a small but significant amount, >> sometimes it is way off. On a reboot when ts_test is off, if I run >> ts_calibrate then the results of ts_test are right on the mark. >> >> I haven't been able to make heads or tails of this, whether to focus an >> hardware or software. >> >> Looking at the touch signals with a scope there is a small amount of >> noise that seems to increase in frequency as more is displayed on the LCD. >> However the calibration never seems to change once the board is booted so I >> do not believe that the noise is at the root of my issue. >> >> /etc/ts.conf contains >> >> module_raw input >> module pthres pmin=1 >> module variance delta=30 >> module dejitter delta=100 >> module linear >> >> I'm exporting the following before running any ts_* utils: >> >> export TSLIB_CONSOLEDEVICE=none >> export TSLIB_CONFFILE=/etc/ts.conf >> export TSLIB_CALIBFILE=/etc/pointercal >> export TSLIB_TSDEVICE=/dev/input/event1 >> export TSLIB_FBDEVICE=/dev/fb0 >> #export TSLIB_PLUGINDIR=/usr/lib/ts >> export TSLIB_PLUGINDIR=/usr/lib/arm-linux-gnueabihf/ts0 >> export TSLIB_TSEVENTTYPE=INPUT >> >> >> I have a debian rootfs and I've installed tslibs via apt-get, but I've >> also cross compiled tslibs-1.0 and tslibs-1.1 from: >> >> https://github.com/kergoth/tslib >> >> With the same results. >> >> Any ideas/suggestions would be greatly appreciated. >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
