from machine import Pin, I2C
from lcd_api import I2cLcd
from time import sleep
from dht import DHT22

red_led = Pin(25, Pin.OUT)
green_led = Pin(32, Pin.OUT)
vert_led = Pin(26, Pin.OUT)
dht_sensor = DHT22(Pin(12))
 

def run():
    i2c_bus = I2C(scl=Pin(25), sda=Pin(21), freq=100000)
    lcd = I2cLcd(i2c_bus, 0x27, 4, 20)
    
    lcd.clear()
    lcd.putstr("Capteur DHT22")
    
    system_active = False  

    while True:
        if button.value() == 0:  
            system_active = not system_active 
            sleep(0.3)  

        if system_active:
            try:
                dht_sensor.measure()
                temperature = dht_sensor.temperature()
                humidity = dht_sensor.humidity()
                
                lcd.clear()
                lcd.putstr(f"Temp: {temperature:.1f}C\n")
                lcd.putstr(f"Humi: {humidity:.1f}%")
                
                if temperature > 30:
                    red_led.on()
                    green_led.off()
                    vert_led.off()
                elif 28 <= temperature <= 30:
                    green_led.on()
                    red_led.off()
                    vert_led.off()
                else:
                    vert_led.on()
                    red_led.off()
                    green_led.off()
            except Exception as e:
                lcd.clear()
                lcd.putstr("Erreur capteur!")
                print("Erreur:", e)
                sleep(2)
        else:
            
            red_led.off()
            green_led.off()
            vert_led.off()
            lcd.clear()
            lcd.putstr("Systeme Arrete")
            sleep(0.1) 

if __name__ == "__main__":
    run()