3M C3266PW User's Guide download pdf (Page 34)

34 3M™ Multi-Touch Chassis Display User Guide

3M Touch Systems, Inc. Proprietary Information – TSD-39373B

Note: Other screen resolutions will scale proportionally. The touch coordinates will not

change.

Get Feature - GetStatus

This is a request to send information that indicates the status of the controller. Among the

uses for this request are determining whether there were any power on check errors and

determining whether the last request was completed successfully.

Table 5. Controller Status Setup Stage

Offset Field Size Value Description

0 bmRequestType 1 0xA1 Class,D2H,Interface

1 bRequest 1 0x01 Get Report

2 wValue 2 0x0306 msb=03=Feature

lsb=06= Feature Report ID

4 wIndex 2 0 Always 0

6 wLength 2 8 Always 8

Table 6. Controller Status Data Stage (controller response)

Offset Field Size Value Description

0 Report ID 1 0x06 Feature Report ID

1 POC Status 1 0xXX Power On Check Status

2 Cmd Status 1 0xXX Status of last command

3 Touch Status 1 0 Not used

4 Async Reports 1 0xXX 0x00 = async touch output off

0x01 = async touch output on

5-7 Not used 3 0 Not used

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.

(0, 1049) [0, 32767] (1679, 1049) [32767, 32767]

Upper Right Calibration Target

X = 1679 – (1680 x 1/8) = 1679 – 210 = 1469

Y = 0 + (1050 x 1/8) = 0 + 131 = 131

Lower Left Calibration Target

X = 0 + (1680 x 1/8) = 0 + 210 = 210

Y = 1049 - (1050 x 1/8) = 1049 - 131 = 918

(0, 0) [0, 0]

(1679, 0) [32767, 0]

(210, 918)

(1469, 131)

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3M C3266PW User's Guide Page 34