import RPi.GPIO as 1GPIO
import time
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
trig_pin=23
echo_pin=24
GPIO.setup(trig_pin,GPIO.OUT)
GPIO.setup(echo_pin,GPIO.IN)

def get_distance():
    GPIO.output(trig_pin,True)
    time.sleep(0.000001)
    GPIO.output(trig_pin,False)
    start_time=time.time()
    while GPIO.input(echo_pin)==0:
        start_time=time.time()
    while GPIO.input(echo_pin)==1:
        end_time = time.time()
    time_ela = end_time - start_time
    time.sleep(0.000001)
    GPIO.output(trig_pin,False)
    start_time=time.time()
    while GPIO.input(echo_pin)==0:
        start_time=time.time()
    while GPIO.input(echo_pin)==1:
        end_time = time.time()
    time_ela = end_time - start_time
    dist=(time_ela * 34300)/2
    return dist
try :
    while True:
        dist=get_distance()
        print(dist)
        time.sleep(1)
except KeyboardInterrupt:
    print('Stop')
    GPIO.cleanup()