3M™ MicroTouch™ Controller SX112 Reference Guide
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3M Touch Systems, Inc. Proprietary Information
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 5
for current development. Using these commands ensures compatibility with all 3M™
MicroTouch™ controllers.
Note:
When you enter commands in terminal mode, precede each command with
<CTRL> A to enter the start of header.
Table 5 Firmware Commands for SX112 Controller Development
Command Code
Description
Calibrate
Extended
CX
Initiates an interactive 2-point calibration.
Calibrate
Raw
CR
Collects the raw X and Y coordinates before normal scaling,
linearization, and filtering process.
Diagnostic
Command
DC
Requests that the controller check for sensor failures such as
broken corners, broken wires, etc.
Finger Only FO
The controller disables the pen and only recognizes finger
touch on the sensor.
Format Raw FR
Returns the signal level (amount of touch) of each of the
four sensor corners in digital format.
Format
Tablet
FT
Outputs the X/Y touch coordinate data in a five-byte packet.
Preferred for current development.
Mode
Stream
MS
Sends a continuous stream of X/Y coordinate data when you
touch the sensor.
Name
NM
Returns a controller identifier string.
Null
Command
Z
Queries the controller and waits for a response.
Output
Identity
OI
Identifies the controller type and the firmware version.
Parameter
Set
P
pds
[
b
]
Lets you adjust the communication parameters (parity, data
bits, and stop bits) of the controller.
Pen or Finger PF
The controller recognizes both pen and finger touch. This is
the default setting.
Pen Only
PO
The controller is set to only recognize input from the pen
and ignores any finger contact on the touch sensor.
Reset
R
Initializes the hardware and the firmware, causes the
controller to stop sending data, and recalculates the
environmental conditions.
Restore
Defaults
RD
Returns the controller to the factory default operating
parameters. Note: the serial port is reset to N81 format tablet
and 2-point calibration is lost.
Unit Type
UT
Identifies the touch controller on your system.