import pigpio
import time

# Define pin numbers
pinTrig = 3
pinEcho = 2
pinBuz = 13

# Initialize pigpio library
pi = pigpio.pi()

# Set up pins
pi.set_mode(pinTrig, pigpio.OUTPUT)
pi.set_mode(pinEcho, pigpio.INPUT)
pi.set_mode(pinBuz, pigpio.OUTPUT)

def measure_distance():
    # Send a 10us pulse to trigger the sensor
    pi.write(pinTrig, 0)
    time.sleep(0.000002)
    pi.write(pinTrig, 1)
    time.sleep(0.00001)
    pi.write(pinTrig, 0)

    # Measure the pulse duration
    while pi.read(pinEcho) == 0:
        pulse_start = time.time()
    while pi.read(pinEcho) == 1:
        pulse_end = time.time()

    pulse_duration = pulse_end - pulse_start
    distance = pulse_duration * 17150  # Convert to distance
    distance = round(distance, 2)      # Round to two decimal places

    return distance

try:
    while True:
        jarak = measure_distance()
        print(f"Distance: {jarak} cm")