#------------------------------------------------------------
#      MEDICIÓN DE TEMPERATURA UTILIZANDO UN TERMISTOR
#------------------------------------------------------------

from machine import ADC, Pin
import utime
import math
import tm1637
Thermistor = ADC(0)

#
# Calculo  de temperatura utilisando la ecuación de Steinhart-Hart
#
def Temperature(RawValue):
    c1 = 0.001129148
    c2 = 0.000234125
    c3 = 0.0000000876741
    R1 = 10000.0
    ADC_Res = 65535.0
    R2 = R1 / ((ADC_Res/RawValue - 1))
    T = math.log(R2)
    Tmp = 1.0 / (c1 + (c2 + (c3 * T * T)) * T)
    Temp = Tmp - 273.15
    return Temp

tm = tm1637.TM1637(clk=Pin(1), dio=Pin(0)) 
tm.brightness(3)
tm.show('    ')

while True:
    Raw = Thermistor.read_u16()
    temp = Temperature(Raw)
    tm.temperature(int(temp))
    print(temp)
    utime.sleep(1)