I am working on a project with 7" TFT LCD using UTFT and UTouch libraries. LCD works well now although I initially had problems with inverted image but I fixed that. Now I want to make a touch screen interface using UTouch library. Unfortunately I have serious problems reading the coordinates from touchscreen. No matter where on screen I press I always get the same coordinates which are X799 and Y0. I tried running the calibration program but to no avail. No matter which part of the screen I press during calibration I get following results;
After I fixed UTouchCD.h with the upper calibration I tried running quick draw and I am still getting only X799, Y0 readings no matter which part of touchscreen is touched. If I run calibration program again I get the same calibration results. Here are my pin definitions but I am certain the problem is not originating from here.
UTouch myTouch( 6, 5, 4, 3, 2);
Touch screen driver IC on my LCD module is XPT2046, I checked online if there are any known problems with this chip but there seems to be nothing obvious.
Here is the hardware I am using
- CTE50 shieldhttp://www.ebay.com/itm/121057447668?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
- 7" LCD module with SSD1963http://www.aliexpress.com/item/Development-board-7-TFT-LCD-Module-800-480-with-Touch-Panel-SSD1963-ARM-STM32-CORTEX-M0/643370779.html
- Arduino Due
Guy from this topic suffered a similar problem but nothing mentioned there helped me at all.http://forum.arduino.cc/index.php?topic=152471.0
I would really appreciate all the help with this situation.