commit ec2a3ced70df1e42d5b9d9667d38bbaecd3ca485
Author: Filip <filip@reiimer.se>
Date:   Mon Jan 13 21:08:01 2020 +0100

    first commit

diff --git a/powermeter.ino b/powermeter.ino
new file mode 100644
index 0000000..dc2dd47
--- /dev/null
+++ b/powermeter.ino
@@ -0,0 +1,205 @@
+#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
+}