#include <Arduino.h>
#include "ESP8266WiFi.h"

#define TURN_ON LOW
#define TURN_OFF HIGH

#define wifi_ssid "etxean"
#define wifi_password "4300sf08fhln"

#define mqtt_server "192.168.249.5"
#define mqtt_port "1883"
#define mqtt_user "homedevice"
#define mqtt_password "WNzAb4VazNFUPlpkn0ED"

void heartbeat();
void longbeat();

void setup() {
  Serial.begin(115200);
  pinMode(LED_BUILTIN, OUTPUT);
  
  // Set WiFi to station mode and disconnect from an AP if it was previously connected
  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  delay(100);
  Serial.println("Setup done");
}

void loop() {
  Serial.println("scan start");
  heartbeat();

  // WiFi.scanNetworks will return the number of networks found
  int n = WiFi.scanNetworks();
  Serial.println("scan done");
  if (n == 0)
    Serial.println("no networks found");
  else
  {
    Serial.print(n);
    Serial.println(" networks found");
    for (int i = 0; i < n; ++i)
    {
      // Print SSID and RSSI for each network found
      Serial.print(i + 1);
      Serial.print(": ");
      Serial.print(WiFi.SSID(i));
      Serial.print(" (");
      Serial.print(WiFi.RSSI(i));
      Serial.print(")");
      Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE)?" ":"*");
      delay(10);
    }
  }
  Serial.println("");
  longbeat();
  // Wait a bit before scanning again
  delay(5000);
}

void heartbeat() 
{
  for (int i=0; i<2; i++)
  {
    digitalWrite(LED_BUILTIN, TURN_ON);
    delay(50);
    digitalWrite(LED_BUILTIN, TURN_OFF);
    delay(100);
  }
}

void longbeat() 
{
  digitalWrite(LED_BUILTIN, TURN_ON);
  delay(500);
  digitalWrite(LED_BUILTIN, TURN_OFF);
}