SmartGPU2-LCD480X320Touch-CommandSet

SMART GPU 2 3.5” TOUCH
Command Set
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2.8 Touch Commands
The integrated touch controller on the SMART GPU 2 chip, it’s an accurate 12 bit
ADC reader, very accurate and perfectly debugged to avoid unwanted touch points.
This touch controller manages a resistive touch screen that is capable of
handling finger touch and stylus pen touch, however for a precision drawing it’s
recommended the use of stylus.
The touch screen also contain 5 general purpose Icons drawn on the bottom
corner, any touch on those Icons are processed on the touch controller and sent by the
SMART GPU 2 as touch on Icon, instead of just another coordinate touch.
Never operate the touch with sharp objects or pens that are not designed for
touch screens.
Briefly Summary of Commands in this section:
*All of Those next commands always begin with the byte ‘T’-54hex, as
they are Touch commands, followed by the next parameters/bytes.
• Get Touchscreen – 53hex ‘S’
• Get Touch icons – 49hex ‘I’
To calibrate the touchscreen, please refer to the command:
• Calibrate Touch – 54hex ‘T’
This command is under Master Commands section.