from machine import Pin, I2C
import network
import urequests
import time
import sys
from dht import DHT22
from lcd_api import LcdApi
from i2c_lcd import I2cLcd

# Configuração do LCD
I2C_ADDR = 0x27  # Endereço I2C do LCD (ajuste se necessário)
LCD_ROWS = 2     # Número de linhas do LCD
LCD_COLS = 16    # Número de colunas do LCD

# Inicializa I2C para o LCD
i2c = I2C(scl=Pin(23), sda=Pin(22), freq=400000)
lcd = I2cLcd(i2c, I2C_ADDR, LCD_ROWS, LCD_COLS)

# Inicializa o sensor DHT22
dht22 = DHT22(Pin(12))

# Função para ler o DHT22
def readDht():
    dht22.measure()
    return dht22.temperature(), dht22.humidity()

# Função para conectar ao WiFi
def connect_wifi():
    wifi = network.WLAN(network.STA_IF)
    wifi.active(True)
    wifi.disconnect()
    wifi.connect(WIFI_SSID, WIFI_PASSWORD)
    if not wifi.isconnected():
        print('connecting..')
        timeout = 0
        while (not wifi.isconnected() and timeout < 10):
            print(10 - timeout)
            timeout = timeout + 1
            time.sleep(1) 
    if wifi.isconnected():
        print('connected')
    else:
        print('not connected')
        sys.exit()
    print('network config:', wifi.ifconfig())

# Configuração do WiFi
WIFI_SSID = "Wokwi-GUEST"
WIFI_PASSWORD = ""

connect_wifi()  # Conectar ao WiFi

# Configuração do Thingspeak HTTP API Protocol
HTTP_HEADERS = {'Content-Type': 'application/json'} 
THINGSPEAK_WRITE_API_KEY = 'KNF3H0A2TOMNOOAR'

# Loop principal
while True:
    # Lê os dados do sensor DHT22
    temp, hum = readDht()
    print("Temperature: {}".format(temp))
    print("Humidity: {}".format(hum))
    
    # Exibe os dados no LCD
    lcd.clear()
    lcd.putstr("Temp: {:.1f} C".format(temp))
    lcd.move_to(12, 2)
    lcd.putstr("Hum: {:.1f} %".format(hum))

    # Envia os dados para o ThingSpeak
    dht_readings = {'field1': temp, 'field2': hum} 
    request = urequests.post('http://api.thingspeak.com/update?api_key=' + THINGSPEAK_WRITE_API_KEY, json=dht_readings, headers=HTTP_HEADERS)  
    request.close() 
    print(dht_readings) 
    print("Msg enviada para o Thingspeak channel com sucesso...")
    print("********************************************")
    time.sleep(5)