ESP8266 Wi-Fi WPA2 Enterprise example

esp8266_wpa2_enterprise_example.ino

#include  <ESP8266WiFi.h>

extern "C" {
#include "user_interface.h"
#include "wpa2_enterprise.h"
#include "c_types.h"
}

// SSID to connect to
char ssid[] = "TEST_KRA";
char username[] = "matheus_garbelini";
char identity[] = "matheus_garbelini";
char password[] = "testtest";


uint8_t target_esp_mac[6] = {0x24, 0x0a, 0xc4, 0x9a, 0x58, 0x28};
void setup() {

  WiFi.mode(WIFI_STA);
  Serial.begin(115200);
  delay(1000);
  Serial.setDebugOutput(true);
  Serial.printf("SDK version: %s\n", system_get_sdk_version());
  Serial.printf("Free Heap: %4d\n",ESP.getFreeHeap());
  
  // Setting ESP into STATION mode only (no AP mode or dual mode)
  wifi_set_opmode(STATION_MODE);

  struct station_config wifi_config;

  memset(&wifi_config, 0, sizeof(wifi_config));
  strcpy((char*)wifi_config.ssid, ssid);
  strcpy((char*)wifi_config.password, password);

  wifi_station_set_config(&wifi_config);
  wifi_set_macaddr(STATION_IF,target_esp_mac);
  

  wifi_station_set_wpa2_enterprise_auth(1);

  // Clean up to be sure no old data is still inside
  wifi_station_clear_cert_key();
  wifi_station_clear_enterprise_ca_cert();
  wifi_station_clear_enterprise_identity();
  wifi_station_clear_enterprise_username();
  wifi_station_clear_enterprise_password();
  wifi_station_clear_enterprise_new_password();
  
  wifi_station_set_enterprise_identity((uint8*)identity, strlen(identity));
  wifi_station_set_enterprise_username((uint8*)username, strlen(username));
  wifi_station_set_enterprise_password((uint8*)password, strlen((char*)password));

  
  wifi_station_connect();
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }

  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void loop() {
}

Hey, thanks for the examples, your code works like a charm when I connect one ESP8266 "Amica" NodeMCU to university eduroam. I am sending IOT data to thingspeak. Weird issue, whenever I connect a second NodeMCU with the same code (sending to a different thingspeak channel), the first one stops sending data. Might there be an issue with conflicting IP addresses?

It's that part where the MAC is assigned. You've assigned the same MAC to different devices. When one is trying to connect, the other one is kicked from the network. So just change the MAC on one of the devices