ST / Mbed 2 deprecated NTPClient_HelloWorld

NTP client app setting system time and X-NUCLEO-IDW01M1 Wi-Fi board time connecting to internet NTP UTC time server.

Dependencies:   NTPClient NetworkSocketAPI X_NUCLEO_IDW01M1v2 mbed

Fork of NTPClient_HelloWorld by ST Expansion SW Team

Example of retrieval of current time using an NTP server. Time is then used to perform a TLS secure connection to https://mbed.org.
The application is meant to be used with mbed OS 2 ("Classic") only (no mbedOS 5 support).

Diff: main.cpp

Revision:
6:96e92bfda33e
Parent:
5:88cece84fb6e
Child:
7:a33ce4fe1b91
--- a/main.cpp	Tue Jan 03 13:02:14 2017 +0000
+++ b/main.cpp	Tue Jan 03 16:26:45 2017 +0000
@@ -41,7 +41,7 @@
     ctTime = time(NULL);
     
     printf ("\n\rConnecting to WiFi ...\n\r");  
-    spwf.connect("ssid","passw", NSAPI_SECURITY_WPA2);
+    spwf.connect("crespan","Elfrontal1", NSAPI_SECURITY_WPA2);
     NTPClient ntp(spwf);        
 
     printf("Initial System Time is: %s\r\n", ctime(&ctTime));   
@@ -59,14 +59,12 @@
 //         so DNS doesnt answer as it requires unsecure UDP socket connection.
 //         workaroud: convert URL to IP quering DNS before secure socket creation, then connect 
 //         the secure socket created to the  retrieved IP.
-      SocketAddress addr(&spwf, "www.amazon.it");
-      const char *ip=addr.get_ip_address();
-      printf ("www.amazon.it resolved to: %s\n\r", ip);
+      SocketAddress addr(&spwf, "www.amazon.it", 443);  // must be called BEFORE set_secure_socket() to allow DNS udp connection
       spwf.set_secure_sockets();     
       TCPSocket  socket(&spwf);           
-      int err = socket.connect(ip,443);
+      int err = socket.connect(addr);
       if (err != 0 )printf ("ERROR opening %d\n\r", err);
-      else printf ("--->>> Secure socket CONNECTED to: %s\n\r", ip);
+      else printf ("--->>> Secure socket CONNECTED to: %s\n\r", addr.get_ip_address());
       spwf.set_unsecure_sockets();    
       socket.close();      
       printf ("Socket closed\n\r");