Update Ethernet.ino

examples/Ethernet/Ethernet.ino

@@ -1,30 +1,84 @@
 #include "EthernetInterface.h"
 EthernetInterface net;
 
-void setup() {
-
-  /* ETH */
-  int retry_count = 0;
-  eth_restart:
-  net.set_blocking(false);
-  int res = net.connect();
-  int start = millis();
-  while ((millis() - start < 20000) && (net.get_connection_status() != NSAPI_STATUS_GLOBAL_UP)) {
-    delay(10);
-  }
-  if (net.get_connection_status() != NSAPI_STATUS_GLOBAL_UP && retry_count++ < 2) {
-    net.disconnect();
-    goto eth_restart;
-  }
-  const char *mac = net.get_mac_address();
-  Serial.println("Ethernet MAC" +String(mac));
-  SocketAddress addr;
-  net.get_ip_address(&addr);
-  Serial.println("Ethernet IP" + String(addr.get_ip_address()));
+void setup()
+{
+    Serial.begin(115200);
+    while (!Serial)
+        ;
 
-}
+    Serial.println("Ethernet example for H7 + PMC");
+
+    // Bring up the ethernet interface
+    net.connect();
+
+    // Show the network address
+    SocketAddress addr;
+    net.get_ip_address(&addr);
+    Serial.print("IP address: ");
+    Serial.println(addr.get_ip_address() ? addr.get_ip_address() : "None");
+
+    // Open a socket on the network interface, and create a TCP connection to mbed.org
+    TCPSocket socket;
+    socket.open(&net);
+
+    net.gethostbyname("ifconfig.io", &addr);
+    addr.set_port(80);
+    socket.connect(addr);
+
+    String request;
+    request += "GET / HTTP/1.1\r\n";
+    request += "Host: ifconfig.io\r\n";
+    request += "User-Agent: curl/7.64.1\r\n";
+    request += "Accept: */*\r\n";
+    request += "Connection: close\r\n";
+    request += "\r\n";
+
+    auto scount = socket.send(request.c_str(), request.length());
+    Serial.print("Sent ");
+    Serial.print(scount);
+    Serial.println(" bytes: ");
+    Serial.print(request);
 
-void loop() {
-  // put your main code here, to run repeatedly:
+    // Receive a simple HTTP response
+    const size_t rlen { 64 };
+    char rbuffer[rlen + 1] {};
+    size_t rcount;
+    size_t rec { 0 };
+    String response;
+
+    while ((rec = socket.recv(rbuffer, rlen)) > 0) {
+        rcount += rec;
+        response += rbuffer;
+        memset(rbuffer, 0, rlen);
+    }
+    Serial.print("Received ");
+    Serial.print(rcount);
+    Serial.println(" bytes: ");
+    Serial.println(response);
+
+    const String clTag = "Content-Length: ";
+    auto clIndex = response.indexOf(clTag);
+    clIndex += clTag.length();
+    auto cl = response.substring(clIndex, clIndex + 2);
+    const String bodyTag = "\r\n\r\n";
+    auto bodyIndex = response.indexOf(bodyTag);
+    if (bodyIndex != -1) {
+        bodyIndex += bodyTag.length();
+        auto body = response.substring(bodyIndex, bodyIndex + cl.toInt());
+        Serial.print("My public IPv4 Address is: ");
+        Serial.println(body);
+    }
+
+
+    // Close the socket to return its memory and bring down the network interface
+    socket.close();
+
+    // Bring down the ethernet interface
+    net.disconnect();
+    Serial.println("Done");
+}
 
+void loop()
+{
 }