#주기 읽기
f = open("input.txt", 'r')
Tlist = list(map(int, f.readline().split()))

#필요 라이브러리 불러오기
import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)

#핀 설정
TRIG = 13
ECHO = 12
#버튼 1(노랑)
buttonY = 21
#버튼 1(초록)
buttonG = 18

GPIO.setup(TRIG,GPIO.OUT)
GPIO.setup(ECHO,GPIO.IN)
GPIO.setup(buttonY,GPIO.IN,pull_up_down=(GPIO.PUD_UP))
GPIO.setup(buttonG,GPIO.IN,pull_up_down=(GPIO.PUD_UP))

GPIO.output(TRIG,False)
time.sleep(2)

#측정
def measure_distance():
    GPIO.output(TRIG,True)
    time.sleep(0.00001)
    GPIO.output(TRIG,False)

    while GPIO.input(ECHO)==0:
      start = time.time()
    while GPIO.input(ECHO)==1:
      stop = time.time

    t = stop-start
    d = t*34300/2
    return d

#led 점멸
def led_blink(T, C):
    global led_busy
    led_busy = True
    for i in range(C):
        led.high()
        time.sleep(T)
        led.low()
        time.sleep(T)
    led_busy = False

#작동
while True:
    if not led_busy:
        if GPIO.input(buttonY) == GPIO.HIGH
            Tindex = (Tindex + 1) % 3
            T = Tlist[Tindex]
            time.sleep(0.3)
        if GPIO.input(buttonG) == GPIO.HIGH
            D = measure_distance()
            C = int(D // 100) + 1
            led_blink(T, C)
            time.sleep(0.3)