Goodix Display Touch GT911

File:TArduinoGT911.png

Summary

Provides an interface to the Goodix GT911 capacitive touch controller, commonly used in displays with multi-touch support.

Description

The GT911 Touch Controller component communicates with the Goodix GT911 chip over I²C, enabling detection of multiple simultaneous touch points on a touchscreen display.

It supports configurable orientation, mirroring, and screen dimensions, allowing flexible adaptation to different display setups.

Diagram:

Categories

• File:TArduinoTouchCategory.png Category Touch – Touchscreen controllers and sensors
• File:TArduinoDisplayCategory.png Category Display – Display input interfaces

Properties

• Address – I²C address of the GT911 controller.
• Enabled – Enables or disables the component.
• Height – Screen height in pixels.
• Width – Screen width in pixels.
• Mirror – Allows flipping the coordinate system:

Horizontal – Boolean; mirrors touch horizontally.

Vertical – Boolean; mirrors touch vertically.

• Orientation – Defines the default orientation of the display:

goUp

goDown

goLeft

goRight

Pins

Input Pins

• Reset – Clock input; resets the GT911 chip when triggered.
• Interrupt – Boolean input; interrupt signal from the GT911 for touch events.

Output Pins

• Interface – I²C communication channel to the GT911 chip.
• Out – Touch output data (coordinates, touch events).
• Reset – Boolean output indicating reset state.