Mode Down Up; Mode Inactive; Mode Stream; Null Command - 3M PX5 Series Reference Manual
Multi-touch asic controller
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Also See for PX5 Series:
- User manual (95 pages) ,
- Safety manual (22 pages) ,
- Reference manual (22 pages)
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3M™ Multi-Touch ASIC Controller Reference Guide
The illustration below shows the coordinates of the calibration targets and display
corners. The corners show the video coordinates in parentheses and the touch screen
coordinates in brackets. Note that the touch screen coordinates for the serial interface
have their origin in the lower-left corner.
Lower Left Calibration Target
X = 0 + (1920 x 1/8) = 0 + 240 = 240
Y = 1049 - (1080 x 1/8) = 1049 - 135 = 914
Note: Other screen resolutions will scale proportionally. The touch coordinates will not change.
Mode Down Up
Syntax:
<SOH>MDU<CR>
Response:
<SOH>0<CR>
Description:
Limits touch reports to touchdown and liftoff events only.
Mode Inactive
Syntax:
<SOH>MI<CR>
Response:
<SOH>0<CR>
Description:
Turns off touch reports.
Mode Stream
Syntax:
<SOH>MS<CR>
Response:
<SOH>0<CR>
The controller will respond with acknowledge (ACK) for compatibility. This format is
the only format supported by this controller.
Description:
This is the default mode of operation at power up. Touch reports include touchdown and
liftoff events as well as continuing touches.
Null Command
Syntax:
<SOH>Z<CR>
Response:
<SOH>0<CR>
Description:
Queries the controller and waits for a response.
(0, 0) [0, 0]
(240, 914)
(0, 1049) [0, 32767]
Positive response.
Positive response.
Positive response.
Positive response.
3M Touch Systems, Inc. Proprietary Information
(
1679, 0) [32767, 0]
Upper Right Calibration Target
(1439, 135)
X = 1679 – (1920 x 1/8) = 1679 – 240 = 1439
Y = 0 + (1080 x 1/8) = 0 + 135 = 135
(1679, 1049) [32767, 32767]
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