Specifications

CARROLL TOUCH Appendix B - Smart-Frame Protocol II Function Reference

Touch System Programmer’s Guide B-13

XCoordHi XCoordLo

= 16-bit x coordinate.

YCoordHi YCoordLo

= 16-bit y coordinate.

ZCoordHi ZCoordLo

= 16-bit z coordinate.

Example

To determine the location of a touch, the host sends the GetTouchState

(01H) command as follows:

66 01 01 FF

The touch system responds with a Touch State Report similar to the

following:

E0 09 00 01 01 00 0C 07 D3 00 00 FF

In this example, the screen is being touched at x=12 (000CH) and

y=2003 (07D3H). The z-axis is not supported.