from machine import Pin, ADC
from time import sleep

ldrValue = ADC(27)
redLED = Pin(16, Pin.OUT)
greenLED = Pin(15, Pin.OUT)

MAX_ADC_READING = 65535;
ADC_REF_VOLTAGE = 3.3;
REF_RESISTANCE = 50;
LUX_CALC_SCALAR = 12518931;
LUX_CALC_EXPONENT = -1.405;
while True:
    rawData = ldrValue.read_u16()
    print(f"Raw data: {rawData}")
    resistorVoltage = rawData / MAX_ADC_READING * ADC_REF_VOLTAGE;
    print(f"Resistor voltage: {resistorVoltage}")
    ldrVoltage = ADC_REF_VOLTAGE - resistorVoltage;
    print(f"LDR voltage: {ldrVoltage}")
    ldrVoltagepercent = ldrVoltage*100 / ADC_REF_VOLTAGE
    print(f"ldrVoltage Percent:" '%.2f' %(ldrVoltagepercent))
    if ldrVoltagepercent > 30 : 
        redLED.value(0)
        greenLED.value(1)
    else :
        redLED.value(1)
        greenLED.value(0)
    sleep(2)