Specifications

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

Touch System Programmer’s Guide B-29

SwitchToClassicSFP (64H)

Command Description

The SwitchToClassicSFP (64H) command instructs the touch system to

return to the classic Smart-Frame Protocol. (Within SFP-II, the original

Smart-Frame Protocol is referred to as the “classic” SFP.) After the

associated report is returned, the touch system accepts only SFP

commands and does not accept SFP-II commands. To return to SFP-II,

the host must send the SwitchToSFP-II (65H) SFP command.

Command Format

Report Description

The Switch To Classic SFP Report reports to the host the result of the

touch system's attempt to return to the classic SFP.

Report Format

64 SwitchResult

SwitchResult

= Indicates whether the switch to SFP mode was

successful.

00H= Switch successful.

01H= Switch failed; touch system still in SFP-II.

Examples

While in SFP-II mode, the host sends the SwitchToClassicSFP (64H)

command as follows:

66 01 64 FF

If the touch system was able to successfully switch to Classic SFP

mode, it responds with the following report:

E0 03 00 64 00 FF

If the touch system could not switch to Classic SFP mode, it responds

with the following report:

E0 03 00 64 01 FF