Hatteland Display 13 inch - HD 13T21 MMC (Widescreen, Inte Cor2 Duo CPU) - Manual (Page 56)

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API / SMBUS / Touch Keypad Access
Appendix
IND100077-136
Extended functionality for Brightness (-/+) and Power ON/OFF touch symbols
As referenced in the “User Controls Overview” chapter in this manual, you can access and interpret actual touches
detected on the 3 front symbols (Brightness and Power ON/OFF) through the Touch Screen driver installed for the
unit via its HID interfacing protocol.
Visible Symbol Symbol ID Response Hex ID Default Operation
B1 0x81 Button pressed down detection
0x80 Button press release detection
+ 0x00 Decrease Brilliance / Brightness was detected
B2 0x81 Button pressed down detection
0x80 Button press release detection
+ 0x01 Power ON/OFF was detected
B3 0x81 Button pressed down detection
0x80 Button press release detection
+ 0x02 Increase Brilliance / Brightness was detected
For installation, implementation, usage and example code, review the document via our website:
http://www.hatteland-display.com/pdf/misc/doc101699-1_touch_keypad_access.pdf
and download the drivers package from (includes .dll and demo executable):
http://www.hatteland-display.com/drivers/touch_keypad_package.zip
or download the entire drivers package for MMC units:
http://www.hatteland-display.com/support_hardware_drivers_panel_computers_seriesx.php
or access both document and driver package as described above from:
“Drivers and Documentation DVD” (MEDIA STD-008 or higher) that are included in the shipment contents.
Please review to “Installing API Drivers” section as explained on the previous pages if you are unsure how to find
document and drivers on the DVD media. The files you need are found in the “Demo and .dll for Touch Keypad
Access” menu button option.