import machine
import utime
import ssd1306
import dht

# Initialize OLED display
i2c = machine.I2C(0, sda=machine.Pin(0), scl=machine.Pin(1))
oled = ssd1306.SSD1306_I2C(128, 64, i2c)

# Initialize DHT22 sensor
dht_sensor = dht.DHT22(machine.Pin(2))  # Change pin number as needed

# Moving average parameters
window_size = 10
temp_readings = [0] * window_size
avg_index = 0

def moving_average(new_reading):
    global temp_readings, avg_index
    temp_readings[avg_index] = new_reading
    avg_index = (avg_index + 1) % window_size
    return sum(temp_readings) / window_size

# Main loop
while True:
    # Read temperature and humidity from DHT22 sensor
    dht_sensor.measure()
    temp_celsius = dht_sensor.humidity()
    # Compute moving average of temperature
    moving_avg_temp = moving_average(temp_celsius)
    
    # Clear previous content on display
    oled.fill(0)
    # Display temperature
    oled.text("Temp (C):", 0, 0)
    oled.text("{:.2f}".format(moving_avg_temp), 0, 10)
    # Display moving average
    oled.text("Moving Avg (C):", 0, 30)
    oled.text("{:.2f}".format(moving_avg_temp), 0, 40)
    # Refresh display
    oled.show()
    
    # Delay before next reading
    utime.sleep(1)  # Adjust delay as needed