Salve a tutti, sono nuovo del mondo e con non poche difficoltà sono riuscito a creare il mio progetto per uno switch per un pulsante da remoto, usando un nodemcu 1.0 basato su esp8266, col protocollo MQTT usando l'arduino IDE.
Dal IDE apro il monitor seriale, e carico lo sketch sulla board, il codice funziona egregiamente, ma quando vado a staccare e/o cambiare l'alimentazione è come se non girasse più. E' come se funzionasse solo con monitor aperto.
Di seguito vi lascio il codice
Grazie anticipatamente
#include <WiFiClient.h>
#include <ESP8266WiFi.h>
#include <MQTT.h>
#include <PubSubClient.h>
//----SERIAL CONFIG ----
#define SERIAL_SPEED 115200
//----WIFI CONFIG ----
#define WIFI_SSID "**********" //your Wifi SSID
#define WIFI_PASSWD "**********" //your wifi password
#define MAX_WIFI_INIT_RETRY 10
#define WIFI_RETRY_DELAY 500
//----MQTT CONFIG ----
#define MQTT_CLIENT_ID "**********"
#define MQTT_SERVER "**********" //MQTT broker sever. I use https://www.cloudmqtt.com/
#define MQTT_UNAME "**********" //MQTT brokor user name - I use this broker https://www.cloudmqtt.com/
#define MQTT_PASSW "**********" //MQTT broker passowrd
#define MQTT_BROKER_PORT 12345 //MQTT BROKER listening port
#define MQTT_TOPIC "**********"
#define ESP_NAME "**********"
#define ESP_SUB_ROLE
WiFiClient wifi_client;
PubSubClient mqtt_client(wifi_client, MQTT_SERVER, MQTT_BROKER_PORT);
bool mqtt_status;
int pin = 5; // LED connected to digital pin 13
//Wifi Initialization function
int WiFi_init()
{
const char* wifi_ssid = WIFI_SSID;
const char* wifi_passwd = WIFI_PASSWD;
int retries = 0;
Serial.println("Connecting to WiFi AP..........");
WiFi.mode(WIFI_STA); //set wifi station mode
WiFi.begin(wifi_ssid, wifi_passwd); //start connecting to WiFi AP
//check the status of WiFi connection to be WL_CONNECTED
while ((WiFi.status() != WL_CONNECTED) && (retries < MAX_WIFI_INIT_RETRY)) {
retries++;
delay(WIFI_RETRY_DELAY);
Serial.println("#");
}
Serial.println(String(WiFi.localIP()[0]) + "." + String(WiFi.localIP()[1]) + "." + String(WiFi.localIP()[2]) + "." + String(WiFi.localIP()[3]));
return WiFi.status(); //return the WiFi connection status
}
//MQTT callback function invoked for every MQTT received message on a subscribed topic
void mqtt_callback(const MQTT::Publish& pub)
{
Serial.println("MQTT receiving a message:");
Serial.println(pub.payload_string());
//partenza da Acqua ON
if (pub.payload_string() == "ON") {
digitalWrite(pin, HIGH);
delay(300);
digitalWrite(pin, LOW);
//Riscaldamento ON
Serial.println("Riscaldamento ON");
} else if (pub.payload_string() == "OFF") {
digitalWrite(pin, HIGH);
delay(300);
digitalWrite(pin, LOW);
//Caldaia OFF
delay(4000);
digitalWrite(pin, HIGH);
delay (300);
digitalWrite(pin, LOW);
//Acqua ON
Serial.println("Riscaldamento OFF, Acqua ON");
}
Serial.println();
}
int MQTT_init(boolean topic_subscribe)
{
Serial.println("Initializing MQTT communication.........");
mqtt_client.set_callback(mqtt_callback); //set callback on received messages
mqtt_client.set_max_retries(255);
//here we connect to MQTT broker and we increase the keepalive for more reliability
if (mqtt_client.connect(MQTT::Connect(MQTT_CLIENT_ID).set_keepalive(90).set_auth(String(MQTT_UNAME), String(MQTT_PASSW)))) {
Serial.println("Connection to MQTT broker SUCCESS..........");
//if role is SUB subscribe to topic
if (topic_subscribe) {
if (mqtt_client.subscribe(MQTT_TOPIC)) {
Serial.println("Subscription to MQTT topic [" + String(MQTT_TOPIC) + "] SUCCESS.........");
} else {
Serial.println("MQTT unable to subscribe to [" + String(MQTT_TOPIC) + "] ERROR.........");
mqtt_client.disconnect();
return false;
}
}
} else {
Serial.println("Connection to MQTT broker ERROR..........");
}
return mqtt_client.connected();
}
void setup() {
pinMode(pin, OUTPUT); // sets the digital pin as output
Serial.begin(SERIAL_SPEED);
delay(100);
Serial.println();
Serial.println("MQTT_basic starting....");
if (WiFi_init() != WL_CONNECTED) {
Serial.println("WiFi connection ERROR....");
} else {
Serial.println("WiFi connection OK....");
#ifdef ESP_SUB_ROLE
mqtt_status = MQTT_init(true); //if ESP is Subscriber do subscribe to topic
#endif
if (!mqtt_status)
Serial.println("MQTT connection ERROR....");
else
Serial.println("MQTT connection OK....");
}
}
void loop() {
if (mqtt_status) {
#ifdef ESP_SUB_ROLE
mqtt_client.loop();
delay(100);
#endif
}
}
