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

# freq 4000-5000 for banner type behaviour
i2c=SoftI2C(sda=Pin(1),scl=Pin(2),freq=500000)
lcd_address=i2c.scan()[0]
lcd = I2cLcd(i2c, lcd_address, 2, 16)


adc = ADC(26)
adcp= ADC(27)

BETA=3950

GAMMA = 0.7
RL10 = 50




while True:
    temp=adc.read_u16()

    photo_reading=adcp.read_u16()
    voltage = photo_reading / 65535. * 5;
    resistance = 2000 * voltage / (1-voltage / 5);
    lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA))

    celsius = 1 / (math.log(1 / (65535. / temp - 1)) / BETA + 1.0 / 298.15) - 273.15;
    print(celsius)
    lcd.clear()
    lcd.putstr(str(round((celsius),2))+" *C" +"\n"+ str(round(lux,2))+" lux")
    time.sleep(1)
    lcd.clear()
    time.sleep(0.1)


lcd=I2cLcd(i2c,lcd_address,2,16)
lcd.putstr("Amitesh")