from utime import sleep
from machine import Pin, ADC
from math import log, pow

Led = Pin(13, Pin.OUT)
Led2 = Pin(16, Pin.OUT)
Led3 = Pin(0, Pin.OUT)
Temp_Sensor = ADC(Pin(27))
Motion_Sensor = Pin(9, Pin.IN)
Light_Sensor = ADC(Pin(28))
gas_sensor = ADC(Pin(26))
buzzer = Pin(5, Pin.OUT)

while True:
    #Defining Analogue Input Devices
    An_Value_temp = Temp_Sensor.read_u16()
    An_Value_gas = gas_sensor.read_u16()
    An_Value_light = Light_Sensor.read_u16()

    #Temperature Sensor Value
    BETA = 3950
    celsius = round(1 / (log(1 / (65535. / An_Value_temp - 1)) / BETA + 1.0 / 298.15) - 273.15) 
   
    #Photoresistor Reading
    GAMMA = 0.7
    RL10 = 50

    An_Value_light = Light_Sensor.read_u16()
    voltage = An_Value_light / 65535 * 3.3
    resistance = 2000 * voltage / (3.3 - voltage)
    lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, 1 / GAMMA)

    #Gas Sensor
    gas_constant = 40000
    

    sleep(1)
    
    #If Conditions
    if Motion_Sensor.value() == 1:
        Led.value(1)
        print("Motion = 1")

    elif Motion_Sensor.value() == 0:
        Led.value(0)
        print("Motion = 0")

    if celsius >= 26:
        Led2.value(1)

    else:
        Led2.value(0)

    if(lux < 500):
        Led3.value(1)
    else:
        Led3.value(0)

    if(An_Value_gas > gas_constant):
        buzzer.value(1)

    else:
        buzzer.value(0)
    

    print("Temperature:", celsius, "°C")
    print("Light Intensity: ", lux)
    print("Gas Intensity: ", An_Value_gas)
    print("\n")

    sleep(1)