— Product ID string (length varies).
| Offset | Description | |--------|-------------| | +0 | Track ID (changes on each new touch) | | +1 | X coordinate (low byte) | | +2 | X coordinate (high byte) | | +3 | Y coordinate (low byte) | | +4 | Y coordinate (high byte) | | +5 | Touch size (pressure/area) | | +6 | Reserved | | +7 | Reserved | gt911 register map
: Instead of constant polling, connect the GT911's INT pin to your microcontroller to only read data when a physical touch occurs. — Product ID string (length varies)
Let’s pull back the curtain and map out the GT911’s internal memory. Use this sequence:
Stores settings like screen resolution, touch sensitivity, and interrupt triggers. Coordinate Data
Have you run into any GT911 quirks in your projects? Share below 👇
You cannot write to the configuration registers while the GT911 is in active mode at 0x5D . Use this sequence: