esp-powermeter/powermeter.ino

#include "ESP8266WiFi.h"
#include <PubSubClient.h>
#include "RemoteDebug.h"
#include <ArduinoOTA.h>
#include <WiFiUdp.h>
#include "myconfig.h"
WiFiClient espClient;
PubSubClient client(espClient);
#define HOST_NAME "remotedebug"
RemoteDebug Debug;


long lastMsg = 0;
char msg[50];
int value = 0;

const int sensor=A0;
const int referenceval=190;
int maxValue;
int minValue=255;
unsigned long count;
unsigned long resetcount;
const int diff=50;
int high=0;

void setup_wifi() {
  // Connect to WiFi
  WiFi.setSleepMode(WIFI_NONE_SLEEP);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) 
  {
     delay(500);
     Serial.print("*");
  }
  
  Serial.println("");
  Serial.println("WiFi connection Successful");
  Serial.print("The IP Address of ESP8266 Module is: ");
  Serial.print(WiFi.localIP());// Print the IP address
}

void setup(void)
{ 
  pinMode(BUILTIN_LED, OUTPUT);
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqttbroker,mqttport);
  client.setCallback(callback);

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

  // Hostname defaults to esp8266-[ChipID]
  // ArduinoOTA.setHostname("myesp8266");

  // 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_SPIFFS
      type = "filesystem";

    // NOTE: if updating SPIFFS this would be the place to unmount SPIFFS using SPIFFS.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("] ");
  for (int i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
  }
  Serial.println();

  // Switch on the LED if an 1 was received as first character
  if ((char)payload[0] == '1') {
    digitalWrite(BUILTIN_LED, LOW);   // Turn the LED on (Note that LOW is the voltage level
    // but actually the LED is on; this is because
    // it is active low on the ESP-01)
  } else {
    digitalWrite(BUILTIN_LED, HIGH);  // Turn the LED off by making the voltage HIGH
  }

}

void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    String clientId = "ESP8266Client-power";
    //clientId += String(random(0xffff), HEX);
    // Attempt to connect
    if (client.connect(clientId.c_str(), "mqtt", "3dgRMrAXzj2AWVH2")) {
      Serial.println("connected");
      // Once connected, publish an announcement...
      //client.publish("outTopic", "hello world");
      // ... and resubscribe
      //client.subscribe("inTopic");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(1000);
    }
  }
}

void getsensorvalue(int sensorvalue) {
  //int sensorvalue=analogRead(sensor);
  
  //Serial.println(analogRead(sensor));
  if ( sensorvalue > maxValue ) {
   maxValue=sensorvalue;
  }
  if ( sensorvalue < minValue ) {
   minValue=sensorvalue;
  }
  
  if ( sensorvalue >= referenceval && high == 0) {
    count++;
    resetcount++;
    Serial.println("HIGH - Min: "+ String(minValue) +", current: "+ String(sensorvalue) + ",Max: "+ String(maxValue) + ", Counter: " + count  );
    high=1;
  }
  else if (sensorvalue <= referenceval - diff && high == 1) {
    Serial.println("LOW - Min: "+ String(minValue) +", current: "+ String(sensorvalue) + ",Max: "+ String(maxValue) + ", Counter: " + count  );
    high=0;
  }
}
  

void loop() 
{
  ArduinoOTA.handle();

  
  
  //long now = millis();
  //if (now - lastMsg > 4000) {
  //  lastMsg = now;
  //  ++value;
  //  snprintf (msg, 50, "hello world #%ld", value);
  //  Serial.print("Publish message: ");
  //  Serial.println(msg);
    
  //}
  
  getsensorvalue(analogRead(sensor));
  //Serial.println("LOW - Min: "+ String(minValue) +", current: "+ String(sensorvalue) + ",Max: "+ String(maxValue) + ", Counter: " + count  );
  long now = millis();
  if (now - lastMsg > 60000 ) {
     if (WiFi.status() != WL_CONNECTED){
       WiFi.reconnect();
    }
    if (!client.connected()) {
      reconnect();
    }
    //float kwh=0;
    //kwh=count/100;
    lastMsg = now;
    snprintf (msg, 50, "{\"pulse\": %ld, \"kwh\": %.2f }", count,float(resetcount)/float(100));
    resetcount=0;
    client.publish("hass/sensor/sensor_powermeter/state", msg);
    
    //delay(20); //wait for data to be published.
  }

  client.loop();
  // EMPTY
}