from machine import Pin, I2C
import time
import dht
from pico_i2c_lcd import I2cLcd

# Initialize DHT11
dht11 = dht.DHT11(Pin(15))

# Initialize I2C for LCD
i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)
I2C_ADDR = 0x27
lcd = I2cLcd(i2c, I2C_ADDR, 2, 16)

while True:
    try:
        dht11.measure()
        temp = dht11.temperature()
        humidity = dht11.humidity()
        
        # Display the readings on LCD
        lcd.clear()
        lcd.putstr("Temp: {}C".format(temp))
        lcd.move_to(0, 1)
        lcd.putstr("Humidity: {}%".format(humidity))
        
        # Print to console
        print("Temperature: {}C".format(temp))
        print("Humidity: {}%".format(humidity))
        
    except OSError as e:
        print('Failed to read sensor.')
    
    time.sleep(2)



# pico_i2c_lcd.py
import utime
from machine import I2C

class I2cLcd:
    # LCD Commands
    LCD_CLR = 0x01
    LCD_HOME = 0x02

    def __init__(self, i2c, address, num_lines, num_columns):
        self.i2c = i2c
        self.address = address
        self.num_lines = num_lines
        self.num_columns = num_columns
        self.init_lcd()

    def init_lcd(self):
        utime.sleep_ms(20)
        self.i2c.writeto(self.address, b'\x03')
        utime.sleep_ms(5)
        self.i2c.writeto(self.address, b'\x03')
        utime.sleep_ms(5)
        self.i2c.writeto(self.address, b'\x03')
        utime.sleep_ms(1)
        self.i2c.writeto(self.address, b'\x02')
        utime.sleep_ms(1)
        self.send_command(0x28)
        self.send_command(0x0C)
        self.send_command(0x06)
        self.send_command(self.LCD_CLR)
        utime.sleep_ms(5)

    def send_command(self, cmd):
        self.i2c.writeto(self.address, bytes([cmd & 0xF0 | 0x08]))
        self.i2c.writeto(self.address, bytes([(cmd << 4) & 0xF0 | 0x08]))

    def send_data(self, data):
        self.i2c.writeto(self.address, bytes([data & 0xF0 | 0x09]))
        self.i2c.writeto(self.address, bytes([(data << 4) & 0xF0 | 0x09]))

    def putstr(self, string):
        for char in string:
            self.send_data(ord(char))

    def clear(self):
        self.send_command(self.LCD_CLR)

    def move_to(self, line, column):
        address = 0x80 | (line << 6) + column
        self.send_command(address)