from machine import Pin, ADC
from time import sleep_ms
from math import log
from neopixel import NeoPixel

ledinhos = NeoPixel(Pin(19, Pin.OUT), 16) 
NTC = ADC(Pin(35), atten=ADC.ATTN_11DB)
chave = Pin(12, Pin.IN, Pin.PULL_DOWN)

def read_ntc_temperatura():
    valor_analogico = NTC.read_u16()
    temp = ((log(((65535 / valor_analogico - 1) ** -1)) / 3950 + (298.15 ** -1)) ** -1) - 273.15
    return temp

while True:

    if chave() == 1:

        temperatura = read_ntc_temperatura()

        if temperatura < 25:
            cor = (0, 0, 255)
            print(f"Temperatura da água: {temperatura:.2f}°C -> frio")
        elif temperatura > 40:
            cor = (255, 0, 0)
            print(f"Temperatura da água: {temperatura:.2f}°C -> quente")
        else:
            cor = (0, 255, 0)
            print(f"Temperatura da água: {temperatura:.2f}°C -> morno")

    else:
        cor = (0, 0, 0)
        print("desligado")

    for i in range(16):
        ledinhos[i] = cor
    ledinhos.write()

    sleep_ms(500)