from machine import Pin, SoftI2C, ADC
from math import log
from i2c_lcd import I2cLcd 
from time import sleep

myADCinput = ADC(Pin(2)) #pin 2 will be used as an ADC input line

lcd_address = 0x26

i2c = SoftI2C(scl = Pin(22), sda = Pin(23), freq = 400000)

lcd = I2cLcd(i2c, lcd_address, 2, 16)  # the display has 2 rows and 16 columns


beta = 3950 # beta coefficient of the thermistor being used
kelvin = 273.15 # value of temperature in Kelvin at zero Celsius

while True:
    ADC_value = myADCinput.read()
    lcd.move_to(0,0)

    temperature_in_celsius = 1 / (log(1 / (4096 / ADC_value - 1))/beta + 1.0 / 298.15) - kelvin
    temperature_in_celsius=round(temperature_in_celsius,1)
    lcd.putstr('Temp is: ') # print to LCD display
    lcd.putstr(str(temperature_in_celsius)) # print to LCD display
    lcd.putstr('   ') # print to LCD display
    sleep(.2)