from machine import Pin, ADC, I2C
from time import sleep
import ssd1306
import dht

# --- I2C Initialization for OLED ---
# For Pico, typical I2C pins:
# SDA -> GP0, SCL -> GP1  (Using I2C0)
i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)

# --- Initialize OLED (128x64 pixels) ---
oled = ssd1306.SSD1306_I2C(128, 64, i2c)
print("I2C device addresses found:", i2c.scan())

# --- Initialize LDR (on ADC pin, e.g., GP27/ADC1) ---
ldr_pin = ADC(27)  # LDR connected to ADC1 (GP27)

# --- Initialize DHT22 (on digital GPIO pin, e.g., GP15) ---
sensor_dht = dht.DHT22(Pin(15))

while True:
    # Read LDR Value
    ldr_value = ldr_pin.read_u16()  # For Pico, use read_u16()

    # Read DHT22 values
    sensor_dht.measure()
    temperatura = sensor_dht.temperature()
    humid = sensor_dht.humidity()

    # Clear OLED screen
    oled.fill(0)

    # Draw border lines on OLED
    for i in range(128):
        oled.pixel(i, 0, 1)
        oled.pixel(i, 20, 1)
        oled.pixel(i, 40, 1)
        oled.pixel(i, 63, 1)
    for i in range(64):
        oled.pixel(0, i, 1)
        oled.pixel(127, i, 1)

    # Display sensor data
    oled.text("Humid :",  3, 6)
    oled.text(f"{humid:.1f}%", 60, 6)
    oled.text("Temp :", 3, 27)
    oled.text(f"{temperatura:.1f}C", 60, 27)
    oled.text("Light :", 3, 47)
    oled.text(f"{ldr_value}", 60, 47)
    
    # Print to Serial for debugging
    print("LDR Value:", ldr_value)
    print("Temp:", temperatura)
    print("Humidity:", humid)

    # Update OLED display
    oled.show()

    # Wait 1 second before next reading
    sleep(1)