Gt911 Register Map [extra Quality] -

Stores settings like screen resolution, touch sensitivity, and interrupt triggers. Coordinate Data

Before exploring the registers, you must understand the GT911's dual I²C addressing scheme. gt911 register map

Always send two bytes for the register address (High byte then Low byte) before reading or writing data. Stores settings like screen resolution

Read 0x8140 to 0x8144 to verify I2C communication. A returned "911" confirms you're talking to the right chip. you won't get new interrupts.

⭐⭐⭐⭐ (4/5) Reviewed by: FirmwareWizard Date of Integration: Yesterday, at 3 AM.

Most designs connect the GT911’s INT pin to a GPIO. After reading touch data, write 0x00 to register 0x814E to clear the interrupt; otherwise, you won't get new interrupts.