water softener mqtt

#define MQTT_KEEPALIVE 10
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <ArduinoOTA.h>
#include <ESP8266mDNS.h>
#include <WiFiUdp.h>
#include <Bounce2.h>

#ifdef __AVR__
#include <avr/power.h>
#endif

#define PIN 14   //D5 - PIN fotorezystora
//****************************************************     MQTT     ****************************************
// Update these with values suitable for your network.

const char* ssid = "xxxxxxxxxx";
const char* password = "xxxxxxxxxx";
const char* mqtt_server = "xxxxxxxxxx";
const char* mqttUser = "xxxxxxxxxx";
const char* mqttPassword = "xxxxxxxxxx";
const char* willTopic = "esp_zmiekczacz/availability";
int willQoS = 1;
bool willRetain = true;
const char* willMessage = "offline";
//***************************************************************************************************************

WiFiClient espClient;
PubSubClient client(espClient);
char msg[50];
long lastReconnectAttempt = 0;

int quality;
bool brak_soli = false;
int PIN_2;
long state = -1;
const int RSSI_MAX = -50; // define maximum strength of signal in dBm
const int RSSI_MIN = -100; // define minimum strength of signal in dBm
unsigned long lastTimeChecked = 0;
uint32_t currentMillis;
unsigned long lastTimeChecked2 = 0;
uint32_t currentMillis2;

// Instantiate a Bounce object
Bounce debouncer_pin = Bounce();

void setup_wifi() {
  delay(10);
  // We start by connecting to a WiFi network
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  WiFi.mode(WIFI_STA);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  randomSeed(micros());
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  Serial.print(WiFi.RSSI());//Signal strength in dBm
  Serial.print("dBm (");
  Serial.print(dBmtoPercentage(WiFi.RSSI()));//Signal strength in %
  //Serial.print(quality);//Signal strength in %
  Serial.print("% )");

  //****************** ArduinoOTA ***************************
  // Port defaults to 8266
  // ArduinoOTA.setPort(8266);

  // Hostname defaults to esp8266-[ChipID]
  ArduinoOTA.setHostname("ESP zmiekczacz");

  // No authentication by default
  // ArduinoOTA.setPassword("admin");

  // Password can be set with it's md5 value as well
  // MD5(admin) = 21232f297a57a5a743894a0e4a801fc3
  // ArduinoOTA.setPasswordHash("21232f297a57a5a743894a0e4a801fc3");

  ArduinoOTA.onStart([]() {
    String type;
    if (ArduinoOTA.getCommand() == U_FLASH) {
      type = "sketch";
    } else { // U_FS
      type = "filesystem";
    }

    // NOTE: if updating FS this would be the place to unmount FS using FS.end()
    Serial.println("Start updating " + type);
  });
  ArduinoOTA.onEnd([]() {
    Serial.println("\nEnd");
  });
  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
    Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
  });
  ArduinoOTA.onError([](ota_error_t error) {
    Serial.printf("Error[%u]: ", error);
    if (error == OTA_AUTH_ERROR) {
      Serial.println("Auth Failed");
    } else if (error == OTA_BEGIN_ERROR) {
      Serial.println("Begin Failed");
    } else if (error == OTA_CONNECT_ERROR) {
      Serial.println("Connect Failed");
    } else if (error == OTA_RECEIVE_ERROR) {
      Serial.println("Receive Failed");
    } else if (error == OTA_END_ERROR) {
      Serial.println("End Failed");
    }
  });
  ArduinoOTA.begin();
//  Serial.println("Ready");
//  Serial.print("IP address: ");
//  Serial.println(WiFi.localIP());
  //**********************************************************


}

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  int i;
  for (i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
    msg[i] = payload[i];
  }
  msg[length] = '\0';

  Serial.println();
  Serial.println(msg);
  // Switch on the LED if an 1 was received as first character

  if (strcmp(topic, "esp_zmiekczacz/inTopic") == 0) {

    if (strcmp((char *)msg, "status") == 0) { /////////////////////////Restart HA
      client.publish("esp_zmiekczacz/status", String(quality).c_str());
      //client.publish("esp_zmiekczacz/status2", String(brak_soli).c_str());

      if (brak_soli) {
        client.publish("esp_zmiekczacz/status2", "brak_soli_on");
      }
      else if (!brak_soli) {
        client.publish("esp_zmiekczacz/status2", "brak_soli_off");
      }
      //
      //      if (BREATHELEDS > 0) {
      //        client.publish("esp_zmiekczacz/status", "BREATHELEDS_ON");
      //      }
      //      else if (BREATHELEDS == 0) {
      //        client.publish("esp_zmiekczacz/status", "BREATHELEDS_OFF");
      //      }
    }

  }
}

boolean reconnect() {

  Serial.println("Attempting MQTT connection...");
  // Create a random client ID
  String clientId = "ESP8266Client-zmiekczacz";
  //clientId += String(random(0xffff), HEX);
  // Attempt to connect
  if (client.connect(clientId.c_str(), mqttUser, mqttPassword, willTopic, willQoS, willRetain, willMessage)) {
    Serial.println("connected");
    // Once connected, publish an announcement...
    client.publish("esp_zmiekczacz/availability", "online", true);
    // ... and resubscribe
    client.subscribe("esp_zmiekczacz/inTopic");
    client.publish("esp_zmiekczacz/status", String(quality).c_str()); //sygnał wifi
    //client.publish("esp_schody/status2", String(brak_soli).c_str()); //brak_soli ON ? OFF
    //    client.publish("esp_schody/status4", String(jasnosc_breathe).c_str());

    if (brak_soli) {
      client.publish("esp_zmiekczacz/status2", "brak_soli_on");
    }
    else if (!brak_soli) {
      client.publish("esp_zmiekczacz/status2", "brak_soli_off");
    }

    //    if (BREATHELEDS > 0) {
    //      client.publish("esp_schody/status", "BREATHELEDS_ON");
    //    }
    //    else if (BREATHELEDS == 0) {
    //      client.publish("esp_schody/status", "BREATHELEDS_OFF");
    //    }
  }
  return client.connected();

}

void setup() {

  //****************** MQTT **********************************
  pinMode(BUILTIN_LED, OUTPUT);     // Initialize the BUILTIN_LED pin as an output
  digitalWrite(BUILTIN_LED, HIGH); //LED OFF
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
  lastReconnectAttempt = 0;
  //**********************************************************
  pinMode (PIN, INPUT_PULLUP);  //Dioda fotorezystor

  debouncer_pin.attach(PIN);
  debouncer_pin.interval(5); // interval in ms

}

void loop() {
  ArduinoOTA.handle();
  diodaState();
  currentMillis2 = millis();
  //dBmtoPercentage(WiFi.RSSI());

  //    Serial.println("quality");
  //  Serial.println(quality);
  //delay (200);
  //****************** MQTT **********************************
  if (!client.connected()) {
    long now = millis();
    if (now - lastReconnectAttempt > 5000) {
      lastReconnectAttempt = now;
      // Attempt to reconnect
      if (reconnect()) {
        lastReconnectAttempt = 0;
      }
    }
  } else {
    // Client connected

    client.loop();
  }
  //**********************************************************

  // Update the Bounce instance:
  debouncer_pin.update();

  // Get the updated value :
  PIN_2 = debouncer_pin.read();


  ////////////////// TELE ////////////////////////////////////
  currentMillis = millis();
  if ((currentMillis - lastTimeChecked) > (60000 * 5)) {    ///1 min * x min // Okres telemetrii
    dBmtoPercentage(WiFi.RSSI());
    lastTimeChecked = currentMillis;
    client.publish("esp_zmiekczacz/status", String(quality).c_str()); //sygnał wifi
    if (brak_soli) {  //status diody "brak soli"
      client.publish("esp_zmiekczacz/status2", "brak_soli_on");
    }
    else if (!brak_soli) {
      client.publish("esp_zmiekczacz/status2", "brak_soli_off");
    }
  }
  /////////////////////////////////////////////////////////////

  if (PIN_2 == LOW) {
    brak_soli = true;
    lastTimeChecked2 = currentMillis2;
  }
  else if (PIN_2 == HIGH) {
    if ((currentMillis2 - lastTimeChecked2) > 2000) {
      brak_soli = false;
    }
  }
}

void diodaState() {
  long newState = brak_soli;
  if (newState != state) {
    if (newState) {
      Serial.println("brak_soli_on");
      client.publish("esp_zmiekczacz/status2", "brak_soli_on");
    } else {
      Serial.println("brak_soli_off");
      client.publish("esp_zmiekczacz/status2", "brak_soli_off");
    }
    state = newState;
  }
}

int dBmtoPercentage(int dBm)
{
  if (dBm <= RSSI_MIN)
  {
    quality = 0;
  }
  else if (dBm >= RSSI_MAX)
  {
    quality = 100;
  }
  else
  {
    quality = 2 * (dBm + 100);
  }
  return quality;
}