from machine import Pin, time_pulse_us
import time
# Define the pins for TRIG and ECHO
TRIG_PIN = 28
ECHO_PIN = 27
# Set up the TRIG and ECHO pins
trig = Pin(TRIG_PIN, Pin.OUT)
echo = Pin(ECHO_PIN, Pin.IN)
def get_distance():
    # Send a 10us pulse to trigger the measurement
    trig.low()
    time.sleep_us(2)
    trig.high()
    time.sleep_us(10)
    trig.low()
    # Measure the duration of the pulse on the ECHO pin
    duration = time_pulse_us(echo, Pin.high)
    # Calculate the distance in centimeters
    distance = (duration / 2) / 29.1  # Speed of sound is 34300 cm/s (29.1 us/cm for round trip)
    return distance
while True:
    distance = get_distance()
    print("Distance: {:.2f} cm".format(distance))
    time.sleep(1)