Specifications

CARROLL TOUCH Appendix A - Smart-Frame Protocol Command Reference

Touch System Programmer’s Guide A-5

Add_Exit_Point_Modifier (29H) ())

Command Description

When the Add Exit Point modifier is enabled by sending the

Add_Exit_Point_Modifier (29H) command, the touch system sends an

Add Exit Point Coordinate Report when the stylus exits the touch active

area. This report is in addition to the Touch Coordinate Reports that are

sent for the currently selected touch mode. For example, if the touch

mode is sent to Enter Point Mode and the Add Exit Point modifier is

set, a Touch Coordinate Report is sent when the stylus enters the touch

active area and an Add Exit Point Coordinate Report is sent when the

stylus is removed from the touch active area. The touch system default

is Add Exit Point modifier disabled.

Report Format

The Add Exit Point Coordinate Report has the following format:

FD X Y FF

FD = Start of Add Exit Point Coordinate report.

X = X-axis logical touch coordinate.

Y = Y-axis logical touch coordinate.

FF = End of report.

Example

An example of an Add Exit Point Coordinate Report is:

FD 10 00 FF

It indicates that the center of the stylus exited at x coordinate 16 and at

y coordinate 0.