from machine import Pin, SoftI2C
from oled import I2C
from time import sleep

i2c = SoftI2C(scl=Pin(22), sda=Pin(21))
oled = I2C(128, 64, i2c)
light = Pin(14, Pin.OUT)
pir_out = Pin(17, Pin.IN)
pir_in = Pin(16, Pin.IN)

number_of_ppl = 0

def update_screen():
    oled.fill(0)
    oled.text("people inside:", 0, 0)
    oled.text(str(number_of_ppl), 0, 2)
    oled.show()

update_screen()

while True:
    if pir_in.value() == 1:
        number_of_ppl += 1
        print("1")
        update_screen()
        while pir_in.value() == 1:
            sleep(0.1)

    if pir_out.value() == 1:
        number_of_ppl -= 1
        print("-1")
        update_screen()
        while pir_out.value() == 1:
            sleep(0.1)

    light.value(1 if number_of_ppl != 0 else 0)

    sleep(0.1)