import rp2
from machine import Pin
import utime as time

coinPin = Pin(0, Pin.IN, Pin.PULL_UP)
newCoin = False
pulses = 0
timeAfter = time.ticks_us()

def Coincounter(pin):
    global newCoin, pulses, timeAfter
    timeAfter = time.ticks_us()
    newCoin = True
    pulses += 1
coinPin.irq(handler = Coincounter, trigger = Pin.IRQ_RISING)

while True:
    timeNow = time.ticks_us()
    if ((newCoin) and (timeNow - timeAfter > 300000)):
        if (pulses == 1):
            print("5 Cent")
        elif (pulses == 2):
            print("10 Cent")
        elif (pulses == 3):
            print("20 Cent")
        elif (pulses == 4):
            print("50 Cent")
        elif (pulses == 5):
            print("1 Euro")
        elif (pulses == 6):
            print("2 Euro")
        else:
            print("Error")
        newCoin = False
        pulses = 0