Network.setDefaultInterface(ETH); //outgoing connections go through ETH by default
Network.setDefaultInterface(WiFi.STA); //outgoing connections go through STA by default

#include <ETH.h>
#include <WiFi.h>
#include <HTTPClient.h>
#define ETH_CLK_MODE ETH_CLOCK_GPIO17_OUT
// Pin# of the enable signal for the external crystal oscillator (-1 to disable for internal APLL source)
#define ETH_POWER_PIN 5
// Type of the Ethernet PHY (LAN8720 or TLK110)
#define ETH_TYPE ETH_PHY_LAN8720
// I2C-address of Ethernet PHY (0 or 1 for LAN8720, 31 for TLK110)
#define ETH_ADDR 0
// Pin# of the I2C clock signal for the Ethernet PHY
#define ETH_MDC_PIN 23
// Pin# of the I2C IO signal for the Ethernet PHY
#define ETH_MDIO_PIN 18
// ETH clock pin
#define ETH_CLOCK_PIN 17
// NRST pin
#define ETH_NRST_PIN 12
// AP config
const char *apSSID = "ESP32_AP";
const char *apPassword = "12345678";
// Time until AP is started
const unsigned long apStartDelay = 30000; // 30 segundos
// Start ap flag
bool startAP = false;
// Already started AP flag
bool apAlreadyStarted = false;
// Task to get data from URL
void httpTask(void *parameter) {
 while (true) {
 if (ETH.linkUp()) {
 HTTPClient http;
 http.begin("http://jsonplaceholder.typicode.com/posts"); // URL de prueba
 int httpResponseCode = http.GET();
 if (httpResponseCode > 0) {
 Serial.printf("HTTP Response code: %d\n", httpResponseCode);
 } else {
 Serial.printf("HTTP POST failed, error: %s\n", http.errorToString(httpResponseCode).c_str());
 }
 http.end();
 }
 vTaskDelay(10000 / portTICK_PERIOD_MS); // Espera 10 segundos
 }
}
void setup() {
 Serial.begin(115200);
 delay(1000);
 // Init ETH
 // Power off/on PHY
 pinMode(ETH_POWER_PIN, INPUT);
 digitalWrite(ETH_POWER_PIN, 0);
 pinMode(ETH_POWER_PIN, OUTPUT);
 delay(99);
 // Reset LAN8710A
 pinMode(ETH_NRST_PIN, OUTPUT);
 digitalWrite(ETH_NRST_PIN, 0);
 delay(200);
 digitalWrite(ETH_NRST_PIN, 1);
 delay(500);
 // Init Ethernet driver
 ETH.begin(ETH_TYPE, ETH_ADDR, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_POWER_PIN, ETH_CLK_MODE);
 // Set hostname
 ETH.setHostname("ESP32_TEST");
 // Wait for linkUp Ethernet connection
 Serial.println("Waiting for ETH linkUp...");
 while (!ETH.linkUp()) {
 delay(500);
 Serial.print(".");
 }
 Serial.println("\nETH link UP!");
 // Wait for having an IP on Ethernet connection
 Serial.println("Waiting for IP on ETH...");
 while (!ETH.hasIP()) {
 delay(500);
 Serial.print(".");
 }
 Serial.println("\nETH now has IP!");
 // Create task to send http posts
 xTaskCreate(httpTask, "HTTP Task", 4096, NULL, 1, NULL);
}
void loop() {
 if(!apAlreadyStarted){
 if(millis() > apStartDelay){
 startAP = true;
 }
 if (startAP) {
 Serial.println("Starting AP...");
 WiFi.mode(WIFI_AP);
 WiFi.softAP(apSSID, apPassword, 1, 0, 1);
 IPAddress IP = WiFi.softAPIP();
 Serial.printf("AP started. IP: %s\n", IP.toString().c_str());
 startAP = false;
 apAlreadyStarted = true;
 }
 }
}

// Ethernet Init Codes
ETH.begin(....);
// PPP Init ....Codes
PPP.begin(...)
// WiFi start codes....
WiFi.begin(....)
// After waiting a while for connection to SSID & Then
if ( WiFi.status() != WL_CONNECTED )
{
 // Set a static configuration if STA failed to connect ssid
 IPAddress local_IP(192, 168, 1, 150);
 IPAddress gateway(192, 168, 1, 1);
 IPAddress subnet(255, 255, 255, 0);
 IPAddress primaryDNS(8, 8, 8, 8); //optional
 IPAddress secondaryDNS(8, 8, 4, 4); //optional
 
 if (!WiFi.config(local_IP, gateway, subnet, primaryDNS, secondaryDNS))
 {
 utilUartPrintf("STA Failed to configure");
 }
}
// After This Ethernet & and others (PPP) continues to connect internet....
...