print("Project: Goal 9 (Industries, Inovation & Infrastructure)")
print("Dateline: 22/11/2024")
print("Created By: Jd")


from machine import Pin, ADC
import dht
import time

# GPIO Pin Configuration
dht_pin = Pin(14)  # GPIO14 for DHT22
soil_sensor_pin = ADC(Pin(35))  # GPIO35 for Soil Moisture Sensor (ADC)
pump_pin = Pin(27, Pin.OUT)  # GPIO27 for Water Pump (LED as indicator)

# Configure the ADC for the soil moisture sensor
soil_sensor_pin.atten(ADC.ATTN_11DB)  # Full-scale voltage range (0-3.3V)

# Soil Moisture Threshold (calibrated)
SOIL_MOISTURE_THRESHOLD = 1500  # Adjust based on sensor calibration

# Initialize DHT22 Sensor
dht_sensor = dht.DHT22(dht_pin)

# Function to read soil moisture
def read_soil_moisture():
    moisture_value = soil_sensor_pin.read()  # ADC value (0-4095)
    print(f"Soil Moisture: {moisture_value}")
    return moisture_value

# Function to read temperature and humidity
def read_temperature_and_humidity():
    try:
        dht_sensor.measure()
        temperature = dht_sensor.temperature()
        humidity = dht_sensor.humidity()
        print(f"Temperature: {temperature}°C, Humidity: {humidity}%")
        return temperature, humidity
    except Exception as e:
        print(f"Error reading DHT22 sensor: {e}")
        return None, None

# Function to control the water pump
def control_pump(state):
    if state:
        print("Turning ON the water pump.")
        pump_pin.on()  # GPIO HIGH to activate the pump
    else:
        print("Turning OFF the water pump.")
        pump_pin.off()  # GPIO LOW to deactivate the pump

# Main Function
def smart_garden():
    while True:
        # Read Sensor Data
        soil_moisture = read_soil_moisture()
        temperature, humidity = read_temperature_and_humidity()

        # Check soil moisture and control the pump
        if soil_moisture < SOIL_MOISTURE_THRESHOLD:
            print("Soil is dry. Activating water pump.")
            control_pump(True)
        else:
            print("Soil moisture level is adequate. Deactivating water pump.")
            control_pump(False)

        # Optional: Log data or send to IoT platform
        # e.g., send_to_cloud(temperature, humidity, soil_moisture)

        # Delay for next reading
        time.sleep(10)  # Adjust the interval as needed

# Run the Smart Garden System
if __name__ == "__main__":
    smart_garden()