from machine import Pin, ADC
from time import sleep
import math


leds = [
    Pin(22, Pin.OUT),
    Pin(21, Pin.OUT),
    Pin(19, Pin.OUT),
    Pin(18, Pin.OUT),
    Pin(5, Pin.OUT),
    Pin(17, Pin.OUT),
    Pin(16, Pin.OUT),
    Pin(4, Pin.OUT),
    Pin(2, Pin.OUT),
    Pin(15, Pin.OUT)
]

buzzer = Pin(14, Pin.OUT)

ntc = ADC(Pin(13))
ntc.atten(ADC.ATTN_11DB)

R_0 = 10000
T_0 = 298.15
Max = 2450

def temp():
    valor = ntc.read()
    V = (valor * Max) / 4095
    R_NTC = R_0 * (V / (Max - V))
    temperatura = (1 / ((math.log( R_NTC / R_0 ) / 3950) + (1 / T_0))) - 273.15 #Formula Steinhart-Hart
    return temperatura

def acender(temperatura):
    nivel = int(((temperatura + 24) / 104) * 10)  

    if nivel > 9:
        nivel = 9
    elif nivel < 0:
        nivel = 0

    for x in range(10):
        if x <= nivel:
            leds[x].value(1)  
        else:
            leds[x].value(0)  

def ligar_buzzer(temperatura):
    if temperatura > 75:
        buzzer.value(1)  
    else:
        buzzer.value(0)  

while True:
    temperatura = temp()
    acender(temperatura)
    ligar_buzzer(temperatura)
    
    print(f'Temperatura: {temperatura:.1f} °C')
    sleep(1)