Calibration for the Touch Screen The raw sample interface of the touch screen driver is used to compute the calibration matrix required to convert raw samples into screen X/Y positions. The produced calibration matrix can be inserted into the touch screen driver to map the raw samples into screen coordinates. The touch screen calibration is performed according to the algorithm described by Carlos E. Videles in the June 2002 issue of Embedded Systems Design. It can be found online at http://www.embedded.com/story/OEG20020529S0046. ------------------------------------------------------------------------------- Copyright (c) 2013-2014 Texas Instruments Incorporated. All rights reserved. Software License Agreement Texas Instruments (TI) is supplying this software for use solely and exclusively on TI's microcontroller products. The software is owned by TI and/or its suppliers, and is protected under applicable copyright laws. You may not combine this software with "viral" open-source software in order to form a larger program. THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS. NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER. This is part of revision 2.1.0.12573 of the DK-TM4C129X Firmware Package.