ADT7410 El sensor de temperatura I2C funciona solo después de un ciclo de encendido (ESP8266)

Tengo un sensor de temperatura ADT7410 conectado a un módulo de funcionamiento ESP8266.

El problema que tengo es que solo puedo obtener buenos datos cambiantes después de apagar y encender el ADT7410. Hasta que obtengo una lectura de temperatura fija razonable que no cambia incluso si caliento / enfrío el sensor o 0x0000 (un sensor desconectado da como resultado 0xFFFF). Intenté restablecer el IC a través de I2C, pero no cambia nada.

El sistema consiste en una placa base / placa base. Este esquema muestra las conexiones entre los tableros. Las cosas no relacionadas en la placa base se han eliminado.

¿Cómopodríaresolverestoparaqueeldispositivocomienceafuncionardespuésdeenchufarlaalimentaciónsinagregarunfetparaapagaryencenderlaplacasecundaria?

CódigoluaNodeMCU:

-----------------------Wificonnection-----------------------functionis_connected()print(wifi.sta.status())returnwifi.sta.status()==5endfunctionblock_connected()whilenotis_connected()doprint("Waiting for connection")
        tmr.delay(1000000)
    end
    print("WIFI connected!")
end

------------------
-- I2C & Sensor --
------------------

I2C_ID = 0
I2C_PIN_SDA = 2
I2C_PIN_SCL = 1

I2C_ADDRESS = 0x48
I2C_TEMP_REG_MSB = 0x00
I2C_TEMP_REG_LSB = 0x01
I2C_STATUS_REG = 0x02
I2C_CONF_REG = 0x03

function adt_reset()
    i2c.start(I2C_ID)
    i2c.address(I2C_ID, 0x00, i2c.TRANSMITTER)
    i2c.write(I2C_ID, 0x06)    
    i2c.stop(I2C_ID)
end

function adt_setup()    
    i2c.start(I2C_ID)
    i2c.address(I2C_ID, I2C_ADDRESS, i2c.TRANSMITTER)
    i2c.write(I2C_ID, I2C_CONF_REG)
    i2c.write(I2C_ID, 127)
    i2c.stop(I2C_ID)
end

function read_reg(id, dev_addr, reg_addr)
  i2c.start(id)
  i2c.address(id, dev_addr ,i2c.TRANSMITTER)
  i2c.write(id,reg_addr)
  i2c.start(id)
  i2c.address(id, dev_addr,i2c.RECEIVER)
  c=i2c.read(id,1)
  i2c.stop(id)
  return string.byte(c)
end

function get_temp()
    msb = read_reg(I2C_ID, I2C_ADDRESS, I2C_TEMP_REG_MSB)
    print(msb)
    lsb = read_reg(I2C_ID, I2C_ADDRESS, I2C_TEMP_REG_LSB)
    print(lsb)

    val = bit.lshift(msb, 8) + lsb
    if bit.isset(msb, 7) then
        return (val - 65536)/128
    else
        return val/128
    end
end

---------------------
-- MQTT Connection --
---------------------

MQTT_HOST = "rabbitmq-sysd.containers.ikioma"
MQTT_PORT = 1883

MQTT_CLIENTID = "temp-" .. node.chipid()
MQTT_KEEPALIVE = 120
MQTT_USER = "guest"
MQTT_PASS = "guest"

MQTT_QOS = 1
MQTT_RETAIN = 0


mqtt_connected = false

m = mqtt.Client(MQTT_CLIENTID, MQTT_KEEPALIVE, MQTT_USER, MQTT_PASS)

function mqtt_connected()
    print("MQTT connected")
    mqtt_connected = true
    m:publish("/connections", MQTT_CLIENTID, MQTT_QOS, MQTT_RETAIN)
end

function mqtt_disconnected()
    print("MQTT disconnected")
    mqtt_connected = false
end

function mqtt_get_connected()
    return mqtt_connected
end

m:lwt("/lwt", MQTT_CLIENTID, MQTT_QOS, MQTT_RETAIN)
m:on("connect", function(con) print ("connected?") end)
m:on("offline", mqtt_disconnected)

mqtt_ip = ""

function mqtt_connect()
    m:connect(mqtt_ip, MQTT_PORT, 0, 0, mqtt_connected)
end

function mqtt_connect_with_ip(ip)
    mqtt_ip = ip
    mqtt_connect()
end

function main_loop()
    if mqtt_get_connected() then
        m:publish("/" .. MQTT_CLIENTID, get_temp(), MQTT_QOS, MQTT_RETAIN, function(conn) print("sent") end)
        if to_advertisement == 0 then
            m:publish("/devices", MQTT_CLIENTID, MQTT_QOS, MQTT_RETAIN)
            to_advertisement = ADVERTISE_INTERVAL
        else
            to_advertisement = to_advertisement - 1
        end
    else
        mqtt_connect()
    end
end

----------
-- MAIN --
----------

block_connected()
print(wifi.sta.getmac())
print(wifi.sta.getip())


i2c.setup(I2C_ID, I2C_PIN_SDA, I2C_PIN_SCL, i2c.SLOW)
adt_reset()
adt_setup()

sk = net.createConnection(net.TCP, 0)
sk:dns(MQTT_HOST, function(conn, ip) mqtt_connect_with_ip(ip) end)
sk = nil

ADVERTISE_INTERVAL = 10
to_advertisement = 0


-- run "loop" every 10s
tmr.alarm(0, 5000, 1, main_loop)