from machine import ADC, Pin
import utime
import math
import tm1637

#LCD.lcd_init()
AnalogIn = ADC(0)                   #gp26 Entrada del sensor TMP36 o LM35.
SetPoint = ADC(1)                 #gp27 Entrada voltaje de ajuste del setpoint de temperatura (Pot 5 ó 10 kOhm).
tmverde= tm1637.TM1637(clk=Pin(1), dio=Pin(0))
tmrojo= tm1637.TM1637(clk=Pin(2), dio=Pin(3))
tmverde.brightness(2)
tmrojo.brightness(2)

# Calculo de la temperatura con la 
# ecuación Steinhart-Hart

Conv = 3300 / 65535
Conv1=80/3300                       #Conv1=100/3300
LED = Pin(15, Pin.OUT)
Relay = Pin(16, Pin.OUT)
LED.value(0)
Relay.value(0)

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




while True:
    ValorPot=ADC.read_u16(SetPoint)
    TempSP=Conv * ValorPot
    SetTemp=0 + TempSP*Conv1
    tmverde.number(int(SetTemp))
  

    V = AnalogIn.read_u16()
    RoomTemp = Temperature(V)
    #mV = V * Conv
    #RoomTemp = (mV - 500.0) / 10.0  #Para LM35, # Para TMP36, T=(Vo-500)/10
    tmrojo.number(int(RoomTemp))
  
    if RoomTemp < SetTemp:
        Relay.value(1)
        LED.value(1)
    else:
        Relay.value(0)
        LED.value(0)
    utime.sleep(1)