from machine import Pin
import time

led = Pin(4, Pin.OUT)
btn1 = Pin(13, Pin.IN, Pin.PULL_UP)
btn2 = Pin(18, Pin.IN, Pin.PULL_UP)
trig = Pin(28, Pin.OUT)
echo = Pin(27, Pin.IN)

with open("input.txt") as f:
    T_values = list(map(int, f.read().split()))

T_index = 0
print("현재 주기:", T_values[T_index])

prev_btn1 = 1
prev_btn2 = 1

def measure_distance():
    trig.low()
    time.sleep_us(10)
    trig.high()
    time.sleep_us(10)
    trig.low()

    while echo.value() == 0:
        pass
    start = time.ticks_us()

    while echo.value() == 1:
        pass
    end = time.ticks_us()

    duration = time.ticks_diff(end, start)
    distance = (duration * 0.0343) / 2
    return distance

while True:
    now_btn1 = btn1.value()
    now_btn2 = btn2.value()

    if prev_btn1 == 1 and now_btn1 == 0:
        T_index = (T_index + 1) % len(T_values)
        print("현재 주기:", T_values[T_index])
        time.sleep(0.01)

    if prev_btn2 == 1 and now_btn2 == 0:
        dist = measure_distance()
        C = int(dist / 100) + 1
        T = T_values[T_index]
        print("깜빡임 횟수:", C,"회", "/", "주기:", T,"초")

        for i in range(C):
            led.on()
            time.sleep(T)
            led.off()
            time.sleep(T)

        print("LED 깜빡임 완료")

    prev_btn1 = now_btn1
    prev_btn2 = now_btn2

    time.sleep(0.01)