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

temp_humidity_sensor = DHT22(Pin(4))

light_sensor = ADC(Pin(34))
light_sensor.atten(ADC.ATTN_11DB)

soil_moisture_sensor = ADC(Pin(35))
soil_moisture_sensor.atten(ADC.ATTN_11DB)

water_level_trigger = Pin(5, Pin.OUT)
water_level_echo = Pin(18, Pin.IN)

water_pump = PWM(Pin(13), freq=50)

green_led = Pin(23, Pin.OUT)
red_led = Pin(22, Pin.OUT)

buzzer = Pin(15, Pin.OUT)

while True:
    temp_humidity_sensor.measure()
    temperature = temp_humidity_sensor.temperature()
    humidity= temp_humidity_sensor.humidity()

    light = light_sensor.read()

    soil_raw = soil_moisture_sensor.read()

    soil_percent = 100 - int((soil_raw/4095)*100)

    if soil_percent < 0:
        soil_percent = 0

    if soil_percent > 100:
        soil_percent = 100

    water_level_trigger.off()
    time.sleep_us(2)

    water_level_trigger.on()
    time.sleep_us(10)
    water_level_trigger.off()

    duration = time_pulse_us(water_level_echo, 1, 3000)

    if duration > 0:
        distance = duration / 58
        tank_percent = int((20 - distance) * 5)
        if tank_percent < 0:
            tank_percent = 0
        if tank_percent > 100:
            tank_percent = 100
    else:
        tank_percent = 0 

    if tank_percent < 10:
        status = "Refill Tank"
        pump_status = "OFF"
        water_pump.duty(40)
        green_led.off()
        red_led.on()
        buzzer.on()

    elif soil_percent < 60 :
        status = "Watering"
        pump_status = "ON"
        water_pump.duty(155)
        green_led.on()
        red_led.off()
        buzzer.off()

        pump_status = "ON"
    else:
        status = "Healthy"
        pump_status = "OFF"
        water_pump.duty(40)
        green_led.off()
        red_led.off
        buzzer.off


   
    print("\n======================================")
    print("      SMART GARDEN DASHBOARD")
    print("======================================")

    print("Temperature     :", temperature, "°C")
    print("Humidity        :", humidity, "%")
    print("Light Level     :", light)
    print("Soil Moisture  :", soil_percent, "%")
    print("Water Tank     :", tank_percent, "%")

    print("--------------------------------------")

    print("Pump Status    :", pump_status)
    print("Green LED      :", "ON" if green_led.value() else "OFF")
    print("Red LED        :", "ON" if red_led.value() else "OFF")
    print("Buzzer         :", "ON" if buzzer.value() else "OFF")

    print("--------------------------------------")
    print("Plant Status     :", status)
    print("======================================")

    time.sleep(1)