import machine
import time
import ssd1306
import dht

# ---------------- I2C OLED Setup ----------------
# GP4 = SDA, GP5 = SCL 
i2c = machine.I2C(0, sda=machine.Pin(4), scl=machine.Pin(5), freq=400000)

oled = ssd1306.SSD1306_I2C(128, 64, i2c)

# ---------------- DHT22 Setup -----------------
# DHT22 DATA connected to GP15
sensor = dht.DHT22(machine.Pin(15))

print("I2C OLED + DHT22 Started")

# ---------------- Main Loop ---------------
while True:
    try:
        sensor.measure()
        temperature = sensor.temperature()
        humidity = sensor.humidity()

        oled.fill(0)
        oled.text("IOT MONITOR", 20, 0)
        oled.hline(0, 10, 128, 1)
        oled.text("Status: ONLINE", 0, 20)
        oled.text(f"Temp: {temperature:.1f} C", 0, 40)
        oled.text(f"Hum : {humidity:.1f} %", 0, 55)
        oled.show()

    except OSError:
        oled.fill(0)
        oled.text("Sensor Error", 20, 30)
        oled.show()

    time.sleep(2)