from machine import *
from lcd_api import *
from machine_i2c_lcd import *
from utime import *

gruen = machine.Pin(19, machine.Pin.OUT)
blau = machine.Pin(21, machine.Pin.OUT)
rot = machine.Pin(20, machine.Pin.OUT)

reed = machine.Pin(18, machine.Pin.IN, machine.Pin.PULL_DOWN)

buzzer = PWM(Pin(22))

#Variablen I2C
I2C_ADDR = 0x27
I2C_NUM_ROWS = 2
I2C_NUM_COLS = 16

sda = Pin(14)
scl = Pin(15)

i2c = I2C(1, sda=sda, scl=scl, freq=400000)
lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)

lcd.backlight_on()

while True:
    eingabe = reed.value()
    
    #lcd.clear()

    if eingabe == 1:
        rot.value(0)
        gruen.value(1)
        lcd.move_to(0,0)
        lcd.putstr("Tuer geschlossen")
        lcd.move_to(0,1)
        lcd.putstr("Status: OK   ")
        
        buzzer.duty_u16(0)
    
    else:
        gruen.value(0)
        rot.value(1)
        lcd.move_to(0,0)
        lcd.putstr("Tuer geoeffnet  ")
        lcd.move_to(0,1)
        lcd.putstr("Status: ALARM")
        
        for i in range(200,2000,10):
            buzzer.freq(i)
            buzzer.duty_u16(2000)
            sleep(0.01)