import time
time.sleep(0.1) # Wait for USB to become ready

print("Hello, Pi Pico!")

from machine import Pin,time_pulse_us
from utime import sleep_us
trig=Pin(17,Pin.OUT)
echo=Pin(16,Pin.IN)

def get_distance():
    trig.value(1)
    sleep_us(10)
    trig.value(0)
    time=time_pulse_us(echo,1,1000000)
    cm=time/58
    return cm

while 1:
    cm=get_distance()
    print("distance:",cm,"cm")
    time.sleep(0.3)