from machine import Pin
from utime import sleep

sleep(0.01) # Wait for USB to connect
print("Hello, CIT!")

from machine import Pin, ADC
import utime as time

# Setup
analog_pin = ADC(2)             # GP28 / ADC2 for AO
digital_pin = Pin(22, Pin.IN)   # GP22 for DO

while True:
    analog_value = analog_pin.read_u16()  # 16-bit value: 0–65535
    digital_value = digital_pin.value()   # 0 -> below or 1 (above)

    print(f"Analog:  {analog_value:5d}, Digital:  {digital_value}")
    time.sleep(0.2)
    
"""
Observations:
 - sensor covered:  AO ~32k DO 1
 - sensor ambient:  AO ~15k DO 1
 - mobile phone:    AO ~11k DO 0
 - torch on LDR:    AO ~ 5k DO 0
"""