usb-knob/code.py

import board
import digitalio
import time

clkPin = digitalio.DigitalInOut(board.GP2)
dtPin = digitalio.DigitalInOut(board.GP1)
dtPin.direction= digitalio.Direction.INPUT
clkPin.direction = digitalio.Direction.INPUT
clkPin.pull = digitalio.Pull.UP
dtPin.pull = digitalio.Pull.UP

global buttonPin
buttonPin = digitalio.DigitalInOut(board.GP15)
buttonPin.direction = digitalio.Direction.INPUT
buttonPin.pull = digitalio.Pull.UP

global previousValue
previousValue = True

while True:
    if buttonPin.value == False:
        print("0x0")
        time.sleep(0.2)
    else:
        if previousValue != clkPin.value:
            if clkPin.value == False:
                if dtPin.value == False:
                    print("1x1")
                elif dtPin.value == True:
                    print("1x0")
                time.sleep(0.1)
            previousValue = clkPin.value