Hi, I'm trying to use touch screen on a mini2440, load seems ok at start up (looking at "/etc/var/messages", and "cat /dev/event1" returns bytes when I touch the screen. However, when I try to calibrate using ts_calibrate, I got a "segmentation fault". I tried to export "TSCALIB_FILE=" as seen on some websites, but same results. I'm using "raw module" in ts.conf (which I uncommented). Any idea ? thanks Thomas
Check to run with strace.
Hi Thomas! Did you solved the problem? When I execute ts_calibrate I get an "Illegal Instruction" error. Thank U!
Which tslib are you using? I assume by the fact that it is not working you have tried to build tslib from source yourself. If so, this may help: http://billforums.station51.net/viewtopic.php?f=8&p=937&sid=b3c5... You have checked that it is an ARM binary by <readelf -A ts_calibrate>? HTH
I'm using the last version. I've downloaded from http://github.com/kergoth/tslib.git. Yes, I've build successfully Qt 4.7.1 and tslib with no errors. And the strangest thing, is that the Qt apps run well and touch screen too, but cursor is shifted about 3 cm from the position where the screen is touched. So... I've to calibrate. But when I execute ts_calibrate, I get the "Illegal Instruction" error. Yes it's an ARM binary: arm-none-linux-gnueabi-readelf -A ts_calibrate: Tag_CPU_name: "ARM10TDMI" Tag_CPU_arch: v5TE Tag_ARM_ISA_use: Yes Tag_THUMB_ISA_use: Thumb-1 Tag_ABI_PCS_wchar_t: 4 Tag_ABI_FP_denormal: Needed Tag_ABI_FP_exceptions: Needed Tag_ABI_FP_number_model: IEEE 754 Tag_ABI_align8_needed: Yes Tag_ABI_align8_preserved: Yes, except leaf SP Tag_ABI_enum_size: int Thank you!
But you want armv4t not the default armv5TE for mini2440. Check the link I suggested.
Now it works! Thank You!!!!!!!!!!
The problem was compiling for the wrong architecture!