from machine import Pin, I2C, UART
import time
from i2c_lcd import I2cLcd


###########  LCD CODE : ##################

# I²C on default ESP32 pins (change if needed)
i2c = I2C(0, scl=Pin(22), sda=Pin(21))

# Find LCD address
devices = i2c.scan()
if not devices:
    raise RuntimeError("No I2C devices found. Check wiring.")

# 16x2 LCD at first found address
lcd = I2cLcd(i2c, devices[0], 2, 16)

# UART1: TX=17, RX=16
uart = UART(1, baudrate=9600, tx=Pin(17), rx=Pin(16))

lcd.clear()
lcd.putstr("Waiting for data")

def show_reading(t, h,g,d):
    while True :
        lcd.clear()
        # Line 1: Temp (fits 16 chars)
        lcd.move_to(0, 0)
        lcd.putstr("Temp: {:>5.1f}C".format(t))
        # Line 2: Humidity
        lcd.move_to(0, 1)
        lcd.putstr("Hum : {:>5.1f}%".format(h))
        time.sleep(5)
        lcd.clear()
        # Line 1: Temp (fits 16 chars)
        if g==0:
            lcd.putstr("Gas leak ⚠")
        # Line 2: Humidity
        lcd.move_to(0, 1)
        if d==1:
            lcd.putstr("Door : Open")
        elif d==0:
            lcd.putstr("Door : Closed")
            time.sleep(5)



#MAIN LOOP
while True:

    if uart.any():

        line = uart.readline()
        print(line)
        if not line:
            continue

        try:
            text = line.decode().strip()
            parts = text.split(",")
            t = float(parts[0])
            h = float(parts[1])
            g = int(float(parts[2]))
            d = int(float(parts[3]))

            show_reading(t, h, g, d)

            print("Recv:", text)

        except Exception as e:
            print(e)

    time.sleep_ms(20)