from machine import ADC
from time import sleep, ticks_us, ticks_diff

T1 = ticks_us()
Sensor = ADC(4)
tempo_ref = 0.00002  # 20 microssegundos

def ler_temperatura():
    global T1
    T2 = ticks_us()
    diferenca = ticks_diff(T2, T1) / 1_000_000
    leitura = (Sensor.read_u16() * 3.3) / 65535
    temperatura = 27 - (leitura - 0.706) / 0.001721

    if diferenca >= tempo_ref:
        print(f"Temperatura atual é: {temperatura:.2f}°C")
        T1 = T2

while True:
    ler_temperatura()