Hello colleagues!
i have an D1 mini with 2 sensors (BME280 connected via I2C) and other sensor (18b20) connected to pin 2 (i dont wanna publish this data to MQTT) . on the other hand i have oled display connected via i2c too, every works perfect!.
The information from BME280 is published to mosquitto locally on PC (Mosquitto works fine too, i have other device connected and it works fine.)
The problem is that suddendly the D1 mini stops to send MQTT data, but the meter on the display continues showing correctly. the D1 mini no hangs, show the data on serial monitor.
Im already changed the D1 Mini for Lolin node MCU v3, and the problem persists. could you see my code and help me what is my mistakes? (Im newbie on programming 
).
Thanks in advance!!!
#include <SPI.h>
#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <OneWire.h>
#include <Adafruit_GFX.h>
#include <DallasTemperature.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
// sensor temperatura ambiente:
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
#define BME_SCK 13
#define BME_MISO 12
#define BME_MOSI 11
#define BME_CS 10
#define SEALEVELPRESSURE_HPA (1023.25)
Adafruit_BME280 bme; // I2C
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
const char* ssid = "LOSLOPEZ";
const char* password = "iddqdidkfa";
const char* mqtt_server = "192.168.1.56";
const char* mqtt_user = "";
const char* mqtt_pass = "";
int mqtt_port = 1883;
const char * root_topic_subscribe ="feeds/casa/temp_sub";
const char * root_topic_publish ="feeds/casa/temp_pub";
float ultimatemp = 0;
float temperaturaambiente = 0;
float presion = 0;
float humedad = 0;
float ultimatempamb =0;
const int oneWireBus = 2;
OneWire oneWire(oneWireBus);
DallasTemperature sensors(&oneWire);
WiFiClient espClient;
PubSubClient client(espClient);
long lastMsg = 0;
long count=0;
char msg[5];
char msg_on[5];
char msg_hum [5];
int value = 0;
void setup() {
setup_wifi();
bme.begin(0x76);
Serial.begin(115200);
sensors.begin();
display.begin(SSD1306_SWITCHCAPVCC, 0x3C); //initialize with the I2C addr 0x3C (128x64)
client.setServer(mqtt_server, mqtt_port);
delay(10);
Serial.println(WiFi.localIP());
reconnect();
}
void reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
Serial.print("Attempting MQTT connection...");
// Attempt to connect
if (client.connect("ESTACION_METEO")) {
Serial.println("connected");
// Once connected, publish an announcement...
if(client.subscribe(root_topic_subscribe)){
Serial.println("Suscripcion ok");
}else{
Serial.println("fallo Suscripcion");
}
} else {
Serial.print("Fallo :( con error ->");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
// Wait 5 seconds before retrying
delay(5000);
}
}
}
void setup_wifi() {
while (WiFi.status() != WL_CONNECTED) {
delay(200);
Serial.print(".");
}
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void pantalla1(){
display.clearDisplay();
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(0,0); //oled display
display.print("Pantalla1");
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(0,20); //oled display
display.print("TS:");
display.print(ultimatemp);
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(0,40);
display.print("Pa.");
display.print(bme.readPressure() / 100.0F);
delay(1000);
}
void pantalla2() {
display.clearDisplay();
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(0,0); //oled display
display.print("Pantalla2");
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(0,20); //oled display
display.print("T:");
display.print(bme.readTemperature());
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(0,40);
display.print("H.:");
display.print(bme.readHumidity());
display.display();
delay (1000);
}
void loop() {
sensors.requestTemperatures();
float temperatureC = sensors.getTempCByIndex(0);
temperaturaambiente = bme.readTemperature();
presion = (bme.readPressure() / 100.0F);
humedad = bme.readHumidity();
if (temperaturaambiente != ultimatempamb) {
ultimatempamb = temperaturaambiente;
client.subscribe(root_topic_subscribe);
delay(2000);
sprintf("Ambiente", " %0.2f " , temperaturaambiente );
client.publish("feeds/casa/tempambiente", "Ambiente");
delay(2000);
sprintf("Humedad", " %0.2f " , humedad);
client.publish("feeds/casa/humambiente", "Humedad");
delay(2000);
sprintf("Presion", "%0.2f" , presion );
client.publish("feeds/casa/presion", "Presion");
}
Serial.print("Temp.Sensor: ");
Serial.print(temperatureC);
Serial.println("ºC");
pantalla1();
delay (3000);
pantalla2();
// sensor ambiente:
Serial.print("Temp. ambiente = ");
Serial.print(bme.readTemperature());
Serial.println(" *C");
Serial.print("Presion = ");
Serial.print(bme.readPressure() / 100.0F);
Serial.println(" hPa");
Serial.print("Altitud = ");
Serial.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
Serial.println(" m");
Serial.print("Humedad= ");
Serial.print(bme.readHumidity());
Serial.println(" %");
delay(1000);
yield();
}