from machine import Pin,time_pulse_us
from time import sl.eep, sleep_us

ECHO_PIN = 14
TRIGGER_PIN = 15

trigger = Pin(T)

def measure_distance():
    trigger.low()
    sleep_us(2)

    trigger.high()
    sleep_us(10)

    trigger.low()

    pulse_duration = time_pulse_us(echo,Pin.high)
    print(pulse_duration)

    distance = pulse_duation*0.0343/2
    retuen distance
while True:
    distance = measure_distance()
    print("Distance:{:.2f}cm",format(distance))
sleep(1)