from machine import Pin, ADC, I2C
import time
from ssd1306 import SSD1306_I2C

# ----- ADC (Grove Light Sensor) -----
light_adc = ADC(Pin(1))
light_adc.atten(ADC.ATTN_11DB)      # 0–3.3V range
light_adc.width(ADC.WIDTH_12BIT)    # 0–4095

# ----- I2C (OLED) -----
i2c = I2C(0, scl=Pin(9), sda=Pin(8), freq=400000)
oled = SSD1306_I2C(128, 64, i2c)

def read_light(samples=8):
    total = 0
    for _ in range(samples):
        total += light_adc.read()
        time.sleep_ms(5)
    return total // samples

while True:
    raw = read_light()
    percent = int((raw / 4095) * 100)

    oled.fill(0)
    oled.text("Light Sensor", 0, 0)
    oled.text("Raw: {}".format(raw), 0, 20)
    oled.text("Level: {}%".format(percent), 0, 40)
    oled.show()

    time.sleep(0.5)