from machine import Pin, PWM, I2C
import dht
import time
from lcd_api import LcdApi
from i2c_lcd import I2cLcd

# Setup sensor DHT22 di GPIO4
dht_sensor = dht.DHT22(Pin(4))

# Setup LED indikator suhu > 35°C di GPIO2
led_warning = Pin(2, Pin.OUT)

# Setup PWM untuk simulasi motor di GPIO15
pwm_motor = PWM(Pin(15))
pwm_motor.freq(1000)  # PWM frequency 1kHz

# Setup I2C untuk LCD (SDA=GPIO21, SCL=GPIO22)
i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400000)
lcd = I2cLcd(i2c, 0x27, 2, 16)  # alamat 0x27 untuk LCD I2C 16x2

def motor_control(temperature):
    """Atur kecepatan motor berdasarkan suhu."""
    if temperature < 25:
        pwm_motor.duty_u16(0)  # motor OFF
    elif 25 <= temperature <= 30:
        pwm_motor.duty_u16(int(65535 * 0.5))  # 50% duty cycle
    else:
        pwm_motor.duty_u16(65535)  # 100% duty cycle

def main():
    while True:
        try:
            dht_sensor.measure()
            temp = dht_sensor.temperature()
            hum = dht_sensor.humidity()

            motor_control(temp)

            # LED peringatan suhu > 35°C
            if temp > 35:
                led_warning.on()
            else:
                led_warning.off()

            # Update LCD dengan data terbaru
            lcd.clear()
            lcd.putstr("Temp: {:.1f} C\n".format(temp))
            lcd.putstr("Hum: {:.1f} %".format(hum))

            # Debug output ke serial
            print("Temperature: {:.1f} C, Humidity: {:.1f} %".format(temp, hum))

        except OSError as e:
            print("Failed to read sensor:", e)

        time.sleep(2)

if __name__ == "__main__":
    main()