from machine import Pin, time_pulse_us
from time import sleep_us, sleep

trig = Pin(1, Pin.OUT)
echo = Pin(2, Pin.IN)

while(True):
    trig.value(0)
    sleep_us(2)
    trig.value(1)
    sleep_us(10)
    trig.value(0)
    tempo = time_pulse_us(2, Pin.high)
    distanza = ((340*tempo/1000000)/2)*100
    print(distanza)