from machine import Pin, ADC, time_pulse_us
from dht import DHT22
import utime
import time

# Definicion de Pin
PIN_TRIG = 26
PIN_ECHO = 25
LOWLED = 18
MIDLED = 19
HIGHLED = 23
MOTOR = 27

# Configuracion de sensor ultrasonico
pin_trig = Pin(PIN_TRIG, Pin.OUT)
pin_echo = Pin(PIN_ECHO, Pin.IN)

# Configuracion para motor y LED.
low_led = Pin(LOWLED, Pin.OUT)
mid_led = Pin(MIDLED, Pin.OUT)
high_led = Pin(HIGHLED, Pin.OUT)
motor = Pin(MOTOR, Pin.OUT)

# Inicializacion de Led y motor
low_led.value(1)
mid_led.value(1)
high_led.value(1)
motor.value(0)

# Configuracion de  pH sensor
ph = ADC(Pin(35))
ph.atten(ADC.ATTN_11DB)
ph.width(ADC.WIDTH_12BIT)

# configuracion de  DHT22 sensor
sensorDHT = DHT22(Pin(15))

def get_distance():
    pin_trig.value(1)
    time.sleep_us(10)
    pin_trig.value(0)
    duration = time_pulse_us(pin_echo, 1)
    distance = duration / 58.0
    return distance

try:
    while True:
        # Obtener medicion de distancia.
        distance = get_distance()
        print(f"Distancia en Cm: {distance}")
        level = distance

        # Control de LEDS y el motor segun la distancia.
        if level < 100:
            low_led.value(0)
            motor.value(1)
            high_led.value(1)
            mid_led.value(1)
            print("Motor encendido...")
        elif 200 < level < 400:
            low_led.value(1)
            high_led.value(1)
            mid_led.value(0)
        elif level >= 400:
            high_led.value(0)
            mid_led.value(1)
            low_led.value(1)
            motor.value(0)

        # Obtener mediciones de PH, temperatura.
        sensorDHT.measure()
        temp = sensorDHT.temperature()
        hum = sensorDHT.humidity()
        medicion = float(ph.read())
        phTOT = round(medicion * 14 / 4096, 2)
        print(f"T = {temp:02}°C  H = {hum:02}%  el objeto tiene una PH de {phTOT} grados de acidez")

        # Duerme un segundo antes de la siguiente iteración del ciclo.
        time.sleep(1)

except KeyboardInterrupt:
    pass