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

i2c=SoftI2C(sda=Pin(20),scl=Pin(19),freq=400000)
lcd_addr=i2c.scan()[0]
print(lcd_addr)


lcd=I2cLcd(i2c,lcd_addr,2,16)

led=Pin(17,Pin.OUT)

adc=ADC(26)
adc2=ADC(28)
while True:
    l=adc2.read_u16()
    temp=adc.read_u16()
    b=3950
    celcius=1/(math.log(1/(65535. / temp-1))/b+1.0/298.15)-273.15
    lcd.putstr("T="+str(celcius)[:5])
    if celcius>40:
        led.on()
        time.sleep(1)
        led.off()
    
    gamma=0.7
    rl10=50

    voltage=l/65535. *5
    resistance=2000*voltage/(1-voltage / 5)
    lux=pow(rl10 * 1e3 * pow(10,gamma)/resistance,(1/gamma))

    print(temp)
    print(lux)

    print(" ")
    
    lcd.move_to(8,0)
    lcd.putstr("L="+str(lux)[:5])

    if celcius<25 and lux<50:
        lcd.move_to(1,1)
        lcd.putstr("Dark and Cold")
    if celcius>45 and lux>300:
        lcd.move_to(1,1)
        lcd.putstr("Bright and Hot")
    else:
        lcd.move_to(1,1)
        lcd.putstr("Normal")

    time.sleep(1)
    lcd.clear()