import time
import machine
import onewire
import ds18x20
import dht
import urequests

# ThingSpeak API Key and URL
API_KEY = "4TOIP0FIRSPY6LFS"
TS_URL = "https://api.thingspeak.com/update?api_key=" + API_KEY

# Pin assignments
DHT_PIN = 2          # GPIO pin connected to the DHT22 sensor
DS18B20_PIN = 3      # GPIO pin connected to the DS18B20 sensor
LDR_PIN = 26         # Analog input pin connected to the LDR sensor
PIR_PIN = 4          # GPIO pin connected to the PIR Motion Sensor

# Initialize DHT22 sensor
dht_sensor = dht.DHT22(machine.Pin(DHT_PIN))

# Initialize DS18B20 sensor (assuming one is connected)
# Add DS18B20 initialization logic here
ds_pin = machine.Pin(DS18B20_PIN)
ds_sensor = ds18x20.DS18X20(onewire.OneWire(ds_pin))

# Initialize LDR sensor
ldr_sensor = machine.ADC(LDR_PIN)

# Initialize PIR Motion Sensor
pir_sensor = machine.Pin(PIR_PIN, machine.Pin.IN)

while True:
    dht_data = None
    ds18b20_data = None
    ldr_value = None
    pir_value = None

    # Read data from DHT22
    try:
        dht_sensor.measure()
        dht_data = dht_sensor.temperature(), dht_sensor.humidity()
    except Exception as e:
        print("Failed to read data from DHT22:", e)

    # Read data from DS18B20
    # Add DS18B20 sensor reading logic here
    try:
        roms = ds_sensor.scan()
        if roms:
            ds_sensor.convert_temp()
            time.sleep_ms(750)
            ds18b20_data = ds_sensor.read_temp(roms[0])  # Use the first DS18B20 sensor if multiple are connected
    except Exception as e:
        print("Failed to read data from DS18B20:", e)

    # Read data from LDR
    try:
        ldr_value = ldr_sensor.read_u16()
    except Exception as e:
        print("Failed to read data from LDR:", e)

    # Read data from PIR Motion Sensor
    try:
        pir_value = pir_sensor.value()
    except Exception as e:
        print("Failed to read data from PIR Motion Sensor:", e)

    if dht_data is not None:
        temperature, humidity = dht_data
        print("Temperature: {:.1f}°C".format(temperature))
        print("Humidity: {:.1f}%".format(humidity))

    if ds18b20_data is not None:
        print("DS18B20 Temperature: {:.2f}°C".format(ds18b20_data))

    if ldr_value is not None:
        print("LDR Value: {}".format(ldr_value))

    if pir_value is not None:
        print("PIR Motion: {}".format(pir_value))

    # Send data to ThingSpeak
    try:
        ts_payload = "field1={:.1f}&field2={:.1f}&field3={}&field4={}".format(
            temperature if temperature is not None else 0,
            humidity if humidity is not None else 0,
            ldr_value if ldr_value is not None else 0,
            pir_value if pir_value is not None else 0
        )
        response = urequests.get(TS_URL + "&" + ts_payload)
        print("ThingSpeak Response:", response.text)
        response.close()
    except Exception as e:
        print("Failed to send data to ThingSpeak. Full error details:", e)

    time.sleep_ms(2000)  # Delay before the next reading