import machine
import onewire
import ds18x20
import time
import network
import urequests  # For making HTTP requests

# Wi-Fi credentials
SSID = "Wokwi-GUEST"
PASSWORD = ""

# ThingSpeak API key
THINGSPEAK_API_KEY = "1FC7IXABIKFSXVXJ"
THINGSPEAK_URL = "https://api.thingspeak.com/update"

# Connect to Wi-Fi
print("Connecting to WiFi...", end="")
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(SSID, PASSWORD)


while not wlan.isconnected():
    print(".", end="")
    time.sleep(0.1)

print(" Connected!")
ip = wlan.ifconfig()[0]
print(f"Device IP: {ip}")


wait = 10
while wait > 0:
    if wlan.status() < 0 or wlan.status() >= 3:
        break
    wait -= 1
    print('Waiting for connection...')
    time.sleep(1)

if wlan.status() != 3:
    raise RuntimeError('Network connection failed')
else:
    print('Wi-Fi connected!')
    print('IP:', wlan.ifconfig()[0])
data_pin = machine.Pin(2)  
ow = onewire.OneWire(data_pin)
ds = ds18x20.DS18X20(ow)
roms = ds.scan()
if roms:
    print("Found DS18B20 devices:", roms)
else:
    print("No DS18B20 devices found. Check your circuit or connections.")


def send_to_thingspeak(temp):
    try:
        response = urequests.get(f"{THINGSPEAK_URL}?api_key={THINGSPEAK_API_KEY}&field1={temp}")
        if response.status_code == 200:
            print(f"Data sent to ThingSpeak: {temp} °C")
        else:
            print(f"Failed to send data to ThingSpeak. Status code: {response.status_code}")
        response.close()
    except Exception as e:
        print(f"Error sending data to ThingSpeak: {e}")

while roms:
    print("Reading temperature...")
    ds.convert_temp()
    time.sleep(1)  # Wait for the conversion to complete

    for rom in roms:
        temp = ds.read_temp(rom)
        if temp is not None:
            print(f"Temperature: {temp:.2f} °C")
            send_to_thingspeak(temp)
        else:
            print("Error reading temperature. Check your connections.")

    time.sleep(2)  
print("Script Stopped")