__link__ | Gt911 Register Map

The configuration block is the most critical for integration. It must be updated whenever the display orientation or sensitivity needs adjustment:

Once communication is established, the register map can be accessed. The GT911 uses 16-bit register addresses. This means every read or write operation requires sending two bytes (Address High, Address Low) before the data payload. gt911 register map

uint8_t config[186]; i2c_write_16bit_reg(0x5D, 0x8040); i2c_read(0x5D, config, 186); The configuration block is the most critical for integration

i2cdump -y 1 0x5d s 0x8040 i

Sets the coordinate range to match your display’s pixel resolution (e.g., 800x480). gt911 register map