import time
from rotary_irq_rp2 import RotaryIRQ
from machine import Pin

SW = Pin(20, Pin.IN, Pin.PULL_UP)  

r = RotaryIRQ(pin_num_clk=18,
              pin_num_dt=19,
              min_val=0,
              reverse=False,
              range_mode=RotaryIRQ.RANGE_UNBOUNDED) 

val_old = r.value() 

while True:
    try:
        val_new = r.value()
        if SW.value() == 0:
            print("Button Pressed")
            print("Selected Number is:", val_new)
            while SW.value() == 0:
                continue
        if val_old != val_new:
            val_old = val_new
            print('result =', val_new)
        time.sleep_ms(50)
    except KeyboardInterrupt:
        break