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

# === Configuración del display SSD1306 ===
i2c = I2C(0, scl=Pin(5), sda=Pin(4), freq=400000)
oled = SSD1306_I2C(128, 64, i2c)

# === Configuración del sensor DHT22 ===
sensor_dht = dht.DHT22(Pin(19))  # GP19

# === Función para mostrar temperatura y humedad con barras ===
def mostrar_temp_hum(temp, hum):
    oled.fill(0)
    oled.text("Temp: {:.1f}C".format(temp), 0, 0)
    oled.text("Hum:  {:.1f}%".format(hum), 0, 10)

    # Termómetro (barra vertical)
    oled.rect(100, 5, 8, 54, 1)
    escala_temp = min(max(int(temp * 54 / 50), 0), 54)
    for i in range(escala_temp):
        oled.fill_rect(102, 58 - i, 4, 1, 1)

    # Humedómetro (barra vertical)
    oled.rect(112, 5, 8, 54, 1)
    escala_hum = min(max(int(hum * 54 / 100), 0), 54)
    for i in range(escala_hum):
        oled.fill_rect(114, 58 - i, 4, 1, 1)

    oled.show()

# === Bucle principal ===
while True:
    try:
        sensor_dht.measure()
        temp = sensor_dht.temperature()
        hum = sensor_dht.humidity()
        print("Temp: {:.1f}C  Hum: {:.1f}%".format(temp, hum))
        mostrar_temp_hum(temp, hum)
    except OSError as e:
        print("Error al leer DHT22:", e)
    time.sleep(2)