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3M™ MicroTouch™ Controller EX Dual Mode Reference Guide
3M Touch Systems, Inc. Proprietary Information – TSD-40848A
Offset
Field
Size
Value
Description
5
Asynch Reports
2
0xXXXX
Active asynchronous reports
7 Reserved
2
0xXXXX
Reserved
9 Extended
POC
Status
2
0xXXXX
Additional Power On Check
Status
11 Reserved
9 9
bytes Reserved
POC Status
– The status of the Power On Checks. Various controller systems are
checked at power-up. If any failures in these systems are detected, a POC flag is set. The
POC status field reports the state of these flags. The POC status information is also
flashed on the controller’s LED. The number of flashes generated for a given error is one
more than the error’s bit number. Refer to the following table for further details. This is a
2-byte bitmapped field.
Cmd Status
– The status for the last command request. This field is used to determine
whether the last request was processed successfully. It is also used to track the progress
of a multi-stage request, such as 2-point calibration. The Status Request does not affect
the contents of this field, i.e., successful or unsuccessful processing of a previous status
request does not cause the command status field to be updated.
Table 11. Valid Command Status Field Entries
Response
Description
0
Failure in command processing
1
Command being processed
2
Stage 1 processing complete (for multi-stage commands)
3 Command
complete
4
Soft reset occurred
5
Hard reset occurred
Touch Status
– Status information for the most recent touch coordinate.
Table 12. Touch Status
Bit Number
Description
0
1 if the sensor is being touched
1 - 7
Reserved
Async reports
– the only active asynchronous report is the Touch Coordinate report 1.
Extended POC Status
– This is additional power on status information. This is a 2-byte
bitmapped field.
Table 13. Extended POC Status
Bit Number
Description
0
Corner drive offset level is too high
1
Fixed 2-point calibration error high
2 - 15
Reserved