dash_button.ino

#include "WiFi.h"
#include "esp_wifi.h"
 
const char *ssid = "";
const char *password = "";
const String mac = "";

 
void PrintStations()
{
  String s = "";

  wifi_sta_list_t stationList;
 
  esp_wifi_ap_get_sta_list(&stationList);  
 
  Serial.print("N of connected stations: ");
  Serial.println(stationList.num);
 
  for(int i = 0; i < stationList.num; i++) {
 
    wifi_sta_info_t station = stationList.sta[i];

    for(int j = 0; j< 6; j++){
      char str[3];
 
      sprintf(str, "%02x", (int)station.mac[j]);
      s.concat(str); 

      if(j<5){
        s.concat(":");
      }
    }
    if(mac == s)
    {
      Serial.println("Hit " + s);
    }
  }
  Serial.println("-----------------");
}
 
void setup() {
 
  Serial.begin(115200);
  WiFi.softAP(ssid, password);
 
  Serial.println();
  Serial.print("IP address: ");
  Serial.println(WiFi.softAPIP());
 
}
 
void loop() {
  PrintStations();
 
  delay(20000);
}