EarthLCD ezLCD-405, Manual

Page: 59 / 173

e z L C D -­‐ 4 0 5 | 59
Rev.
© 2016 Earth Computers Tech. Inc.
1.7.4 BUTTON_DEF
Description: Defines and draws a touch button
Code: B0 hex, 176 dec
7 6 5 4 3 2 1 0
Byte 0: Command
Byte 1: Button No (0 to 63)
Byte 2: Initial State (1: Up, 2: Down, 3: Disabled, 4: Non-­‐Visible)
Byte 3: Icon No in Ser. Flash for button Up (255 = none)
Byte 4: Icon No in Ser. Flash for button Down (255 = none)
Byte 5: Icon No in Ser. Flash for button Disabled (255 = none)
x15 x14 x13 x12 x11 x10 x9 x8 Byte 6: Button upper-­‐left corner x-­‐coordinate MSB
x7 x6 x5 x4 x3 x2 x1 x0 Byte 7: Button upper-­‐left corner x-­‐coordinate LSB
y15 y14 y13 y12 y11 y10 y9 y8 Byte 8: Button upper-­‐left corner y-­‐coordinate MSB
y7 y6 y5 y4 y3 y2 y1 y0 Byte 9: Button upper-­‐left corner x-­‐coordinate LSB
Byte 10: Touch Zone width
Byte 11: Touch Zone height
About the Touch Zone:
Touch Zone is the active touch response area of the button. It is specified by With (Byte 9) and
Height (Byte 10).
·∙ If the Button Up Icon is defined (Byte 3 is not 255), the Touch Zone is centered on it.
·∙ If the Button Up Icon is none (Byte 3 = 255), the position of the upper-­‐left corner of the Touch
Zone is specified by X (Bytes: 6 and 7) and Y (Byte 8).
ARCH
button_no
state
button_up_icon
button_down_icon
button_disabled_icon
touch_zone_height
touch_zone_width