import time
from machine import ADC, Pin, I2C, SoftI2C, RTC
from pico_i2c_lcd import I2cLcd
import math

i2c= SoftI2C(sda=Pin(12), scl=Pin(13), freq=400000)
lcd_addr= i2c.scan()[0]
print(lcd_addr)
led= Pin(2, Pin.OUT)

lcd= I2cLcd(i2c, lcd_addr, 2, 16)
lcd.clear()
lcd.move_to(0, 0)
time.sleep(1)

adc= ADC(28)
pht= ADC(26)

BETA = 3950
GAMMA = 0.7
RL10 = 50

Green = Pin (3, Pin.OUT)
Yellow = Pin (6, Pin.OUT)
Red = Pin (2, Pin.OUT)


while True:
    temp= adc.read_u16()
    photo=pht.read_u16()
    voltage = photo / 65535. * 5
    resistance = 2000 * voltage / (1 - voltage / 5)
    lux = math.pow(RL10 * 1e3 * math.pow(10, GAMMA) / resistance, (1 / GAMMA))

    print(lux)
    temp=1 / (math.log(1 / (65535. / temp - 1))/ BETA + 1.0 / 298.15) - 273.15
    print(temp)

    if(30<=temp):
        Green.on()
    elif(1<=temp<30):
        Yellow.on()
    elif(-23<=temp<1):
        Red.on()
    time.sleep(1)
    Red.off()
    Yellow.off()
    Green.off()

    led.on()
    time.sleep(1)
    led.off()
    if (30<=temp):

        lcd.putstr(str(temp)+" C")
        lcd.move_to(3,1)
        lcd.putstr(str(lux)+"lux")
        time.sleep(1)
        lcd.clear()
        lcd.putstr("Hot Weather")
        time.sleep(1)
        lcd.clear()

    if (30>=temp):

        lcd.putstr(str(temp)+" C")
        lcd.move_to(3,1)
        lcd.putstr(str(lux)+"lux")
        time.sleep(1)
        lcd.clear()
        lcd.putstr("Cold Weather")
        time.sleep(1)
        lcd.clear()