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3M™ Multi-Touch Chassis Display User Guide
3M Touch Systems, Inc. Proprietary Information -- 37732v04
Firmware Commands
Developers may use this information when writing touch applications, developing custom
drivers or touch configurations, or testing their touch systems. Developers can use
firmware commands to initialize the controller, select operating modes, specify data
formats, and execute diagnostic functions.
Caution:
This document assumes you are familiar with firmware commands and how to
use them. Executing some commands may alter the performance of your touch system
and render it inoperable. You should be aware of the results before executing any
firmware commands.
To optimize the performance of the touch controller and simplify the development of
custom drivers, 3M Touch Systems recommends you use the commands listed in Table
17 for current development. Using these commands ensures compatibility with all 3M™
controllers.
Note:
When you enter commands in terminal mode, precede each command with
<CTRL> A to enter the start of header.
Table 18. Firmware Commands for PX Serial Controller Development
Command
Code
Description
Calibrate
CX
Initiates an interactive 2-point calibration.
Get Copyright
Q101
Returns the copyright string.
Mode Down Up
MDU
Reports touchdowns and liftoffs only.
Mode Inactive
MI
Turns off touch reports.
Mode Stream
MS
Default mode. Streaming touch reports.
Name Command
NM
Returns a controller identifier string.
Null Command
Z
Returns an ACK. No effect.
Output Identity
OI
Returns Identity string: ADxxxx
Soft Reset
R
Resets certain modes and gets a new baseline.
Restore Defaults
RD
Restores default settings.
Unit Type
UT
Returns the Status string: AD****ss.
Calibrate
Syntax:
<SOH>
CX
<CR>
Response:
<SOH>
1
<CR> Valid point response.
A Valid Point Response (‘1’) signifies that a touch coordinate was detected and is in
range of the expected screen target area. Two valid point responses indicate successful
calibration.