/**
   ESP32 + DHT22 Example for Wokwi
   
   https://wokwi.com/arduino/projects/322410731508073042
*/
#include "WiFi.h"

int red=2;
int yellow=4;
int green=15;

void setup() {
  Serial.begin(115200);
 


  pinMode(red, OUTPUT);
    pinMode(yellow, OUTPUT);
    pinMode(green, 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");

  // WiFi.scanNetworks will return the number of networks found
  int n = WiFi.scanNetworks();
  //int n = WiFi.scanNetworks(false, false, false,20);
  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) == WIFI_AUTH_OPEN)?" ":"*");


      if (WiFi.RSSI(i)<=-35&& WiFi.RSSI(i) >-45){


        digitalWrite(green, HIGH); 

Serial.println("GREEN");
      }

else if (WiFi.RSSI(i)<=-45&& WiFi.RSSI(i) >-55){


        digitalWrite(yellow, HIGH); 

Serial.println("YELLOW");
      }
    else  if (WiFi.RSSI(i)<=-55){

           digitalWrite(red, HIGH); 
           

Serial.println("RED");

    }
     
    }
  }
  
Serial.println("");
  // Wait a bit before scanning again
  
  
  digitalWrite(green, LOW); 
  digitalWrite(yellow, LOW); 
  digitalWrite(red, LOW); 
}