Some updates

ESP32-PoE-Test3/ESP32-PoE-Test3.ino

@@ -0,0 +1,35 @@
+/*
+    This sketch is combined demo of: 1) SD(esp_32) -- > SD_Test; 2) WiFi --> ETH_LAN8720
+    It displays info about the card on the terminal and initializes LAN after that. You can ping the IP address shown on the terminal.
+
+*/
+#define ETH_CLK_MODE ETH_CLOCK_GPIO17_OUT
+#define ETH_PHY_POWER 12
+
+#include <ETH.h>
+
+static bool eth_connected = false;
+
+void WiFiEvent(WiFiEvent_t event);
+void testClient(const char * host, uint16_t port);
+
+#define BUTTON_PRESSED()  (!digitalRead (34))
+void setup()
+{
+    Serial.begin(115200);
+    WiFi.onEvent(WiFiEvent);
+    ETH.begin();
+    pinMode (34, INPUT);  // Button
+}
+
+
+void loop()
+{
+  if (BUTTON_PRESSED()) {
+    if (eth_connected) {
+      Serial.println("Button pressed");
+      testClient("google.com", 80);
+    }
+    delay(1000);
+  }
+}

ESP32-PoE-Test3/esp_eth.ino

@@ -0,0 +1,42 @@
+#include <ETH.h>
+
+void WiFiEvent(WiFiEvent_t event)
+{
+  switch (event) {
+    case SYSTEM_EVENT_ETH_START:
+      Serial.println("ETH Started");
+      //set eth hostname here
+      ETH.setHostname("esp32-ethernet");
+      break;
+    case SYSTEM_EVENT_ETH_CONNECTED:
+      Serial.println("ETH Connected");
+      break;
+    case SYSTEM_EVENT_ETH_GOT_IP:
+      Serial.print("ETH MAC: ");
+      Serial.print(ETH.macAddress());
+      Serial.print(", IPv4: ");
+      Serial.print(ETH.localIP());
+      if (ETH.fullDuplex()) {
+        Serial.print(", FULL_DUPLEX");
+      }
+      Serial.print(", ");
+      Serial.print(ETH.linkSpeed());
+      Serial.println("Mbps");
+      if (ETH.enableIpV6()) {
+        Serial.print(" IPv6 enabled : ");
+        Serial.println(ETH.localIPv6());
+      }
+      eth_connected = true;
+      break;
+    case SYSTEM_EVENT_ETH_DISCONNECTED:
+      Serial.println("ETH Disconnected");
+      eth_connected = false;
+      break;
+    case SYSTEM_EVENT_ETH_STOP:
+      Serial.println("ETH Stopped");
+      eth_connected = false;
+      break;
+    default:
+      break;
+  }
+}

ESP32-PoE-Test3/testclient.ino

@@ -0,0 +1,19 @@
+void testClient(const char * host, uint16_t port)
+{
+  Serial.print("\nconnecting to ");
+  Serial.println(host);
+
+  WiFiClient client;
+  if (!client.connect(host, port)) {
+    Serial.println("connection failed");
+    return;
+  }
+  client.printf("GET / HTTP/1.1\r\nHost: %s\r\n\r\n", host);
+  while (client.connected() && !client.available());
+  while (client.available()) {
+    Serial.write(client.read());
+  }
+
+  Serial.println("closing connection\n");
+  client.stop();
+}