Touch Panel Calibration Method (2-Point System) - Renesas SH7727 General Information Manual

R0P7727TH003TRKE General Information Manual

6.4.33 Touch Panel Calibration Method (2-point System)

The power supply controller supports 2-point touch panel calibration. Figure 6.11shows the points of the
drawing coordinates and A/D conversion coordinates that are necessary for calibration.
Origin of drawing
coordinates
Figure 6.11 Points of the Drawing Coordinates and A/D Conversion Coordinates
T-Engine Board
Drawing coordinates: x axis
Point B
LCD
A/D conversion coordinates: x axis
SW1
SW2
Point A
SW3
72
Power Supply Controller
A/D conversion
coordinates