import machine
import network
import time
import urequests
import ujson
import dht

# WiFi credentials
WIFI_SSID = "POCO F5"
WIFI_PASSWORD = "12345678a"

# ThingSpeak API settings
THINGSPEAK_API_KEY = "BA249K52KOSQ7QH3"
THINGSPEAK_URL = "http://api.thingspeak.com/update"

# DHT22 (AM2302) sensor on GPIO 4
dht_sensor = dht.DHT22(machine.Pin(4))

# LDR sensor on analog pin ADC1
LDR_SENSOR_PIN = machine.ADC(1)

# Function to read room temperature and humidity
def read_room_temperature_humidity():
    dht_sensor.measure()
    temperature = dht_sensor.temperature()
    humidity = dht_sensor.humidity()
    return temperature, humidity

# Function to read light intensity
def read_ldr():
    ldr_data = LDR_SENSOR_PIN.read_u16()
    return ldr_data

# Function to send data to ThingSpeak
def send_data_to_thingspeak(temperature, humidity, light):
    data = {
        "api_key": THINGSPEAK_API_KEY,
        "field1": temperature,
        "field2": humidity,
        "field3": light,
    }
    try:
        response = urequests.post(THINGSPEAK_URL, data=ujson.dumps(data), headers={"Content-Type": "application/json"})
        response.close()
    except Exception as e:
        print("Error sending data:", e)

# Initialize the Wi-Fi connection
wifi = network.WLAN(network.STA_IF)
wifi.active(True)
wifi.connect(WIFI_SSID, WIFI_PASSWORD)

# Wait for the Wi-Fi connection to establish
print("Connecting to Wi-Fi...")
while not wifi.isconnected():
    time.sleep(1)

print("Connected to Wi-Fi")

if __name__ == "__main__":
    try:
        while True:
            temperature, humidity = read_room_temperature_humidity()
            light = read_ldr()
            print(f"Temp: {temperature:.2f}°C")
            print(f"Hum: {humidity:.2f}%")
            print(f"LUX: {light}")

            send_data_to_thingspeak(temperature, humidity, light)
            print("Data sent to ThingSpeak\n")

            time.sleep(15)  # Send data every 15 seconds
    except KeyboardInterrupt:
        pass