GT911 Touch Controller Library for Micropython

This library interfaces the GT911 touch controller with a microcontroller running Micropython

Examples

Complete examples are in the files:

• example_polling.py
• example_interrupt.py

Polling

To continuously checks for touch events in a loop:

tp = gt911.GT911(sda="PB7", scl="PB6", interrupt="PB4", reset="PB3")
tp.begin(gt.Addr.ADDR1)

while True:
    points = tp.get_points()
    if points:
        print(f"Received touch events: {points}")

Interrupt

The interrupt example configures an interrupt handler to respond to touch events

Interrupt handler setup:

def on_touch(_):
    points = tp.get_points()
    if points:
        print(f"Received touch events: {points}")

Defining the rest of the program

tp = gt911.GT911(sda="PB7", scl="PB6", interrupt="PB4", reset="PB3")
tp.begin(gt.Addr.ADDR1)
print("Finished initialization.")
print(f"  Screen: {tp.width}x{tp.height}")

tp.enable_interrupt(on_touch)