import machine
from machine import SoftI2C, Pin, ADC
from lcd_api import LcdApi
from i2c_lcd import I2cLcd
import utime

I2C_ADDR = 0x27
totalRows = 2
totalColumns = 16


i2c = SoftI2C(scl=Pin(22), sda=Pin(21), freq=10000) 

# Initialize the LCD
lcd = I2cLcd(i2c, I2C_ADDR, totalRows, totalColumns)

# Create an ADC object for pin 34
adc = ADC(Pin(34))

while True:

    sensorValue = adc.read_u16()  
    voltage = (sensorValue * (5/65535))

    print(voltage)
    resistance = 10000*voltage / (5 - voltage)


    # Display resistance on LCD
    lcd.move_to(0, 0)
    lcd.putstr("LDR Resistance: {:.0f} Ohms".format(resistance))

    # Delay for half a second
    utime.sleep(0.5)