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

# Paramètres pour l'écran LCD I2C
I2C_ADDR = 0x27  # Adresse I2C du LCD (à vérifier avec un scanner I2C si nécessaire)
LCD_ROWS = 2
LCD_COLS = 16

# Initialisation de l'I2C pour le LCD
i2c = I2C(0, scl=Pin(22), sda=Pin(21))
lcd = I2cLcd(i2c, I2C_ADDR, LCD_ROWS, LCD_COLS)

# Initialisation des broches
NTC = ADC(Pin(32))  
IN1 = Pin(25, Pin.OUT, value=0)  # Direction 1
IN2 = Pin(23, Pin.OUT, value=0)  # Direction 2
ENA = Pin(13, Pin.OUT, value=1)   # PWM pour moteur A
IN3 = Pin(18, Pin.OUT, value=0)   # Ventilateur
motor_pwm = PWM(ENA)  
motor_pwm.freq(1000)

pot = ADC(Pin(33)) 
button_marche = Pin(34, Pin.IN) 
button_stop = Pin(35, Pin.IN)

ALARM_TONE_DURATION = 500  
ALARM_TONE1 = 1000
ALARM_TONE2 = 1500
buzzer = PWM(Pin(19), freq=ALARM_TONE1, duty=0)

motor_running = False 
motor_direction = "ASP"  
previous_marche_state = 0 
previous_stop_state = 0

def play_tone(frequency, duration):
    buzzer.freq(frequency)  
    buzzer.duty(512)  
    time.sleep_ms(duration)  
    buzzer.duty(0)  
    time.sleep_ms(1)  

def play_alarm():
    play_tone(ALARM_TONE1, ALARM_TONE_DURATION)
    play_tone(ALARM_TONE2, ALARM_TONE_DURATION)

def stop_alarm():
    buzzer.duty(0)  

def start_motor():
    if motor_direction == "ASP":
        IN1.on() 
        IN2.off()  
    else:
        IN1.off()
        IN2.on()  

def stop_motor():
    IN1.off()
    IN2.off()

def temperature(ntc_value): 
    return 80 - ((ntc_value / 4095) * 104)

while True: 
    current_marche_state = button_marche.value() 
    current_stop_state = button_stop.value()
    
    ntc_value = NTC.read() 
    temperature_en_C = temperature(ntc_value) 
    pot_value = pot.read() 
    motor_speed = int((pot_value / 4095) * 65535)  
    motor_speed_percent = int((pot_value / 4095) * 100)

    if current_marche_state == 1 and previous_marche_state == 0: 
        motor_running = True 
        start_motor() 
    if current_stop_state == 1 and previous_stop_state == 0: 
        motor_running = False 
        stop_motor() 

    previous_marche_state = current_marche_state 
    previous_stop_state = current_stop_state 

    if temperature_en_C >= 60: 
        motor_running = False 
        stop_motor()  
        motor_pwm.duty_u16(0)  
        IN3.on() 
        play_alarm()  
    else:
        IN3.off() 
        stop_alarm()   
 
    if motor_running and temperature_en_C < 60: 
        motor_pwm.duty_u16(motor_speed) 
    else: 
        motor_pwm.duty_u16(0)

    # Affichage sur LCD
    lcd.clear()
    lcd.putstr('Temp: {:.2f}C\n'.format(temperature_en_C))
    lcd.putstr('Vit: {}% Mot: {}'.format(motor_speed_percent, 'On' if motor_running else 'Off'))

    time.sleep(2)