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).

Files at this revision

API Documentation at this revision

Revision 6:96e92bfda33e, committed 2017-01-03

Comitter:
mapellil
Date:
Tue Jan 03 16:26:45 2017 +0000
Parent:
5:88cece84fb6e
Child:
7:a33ce4fe1b91
Commit message:
Used socket connect(SocketAddress addr) to allow DNS resolution

Changed in this revision

NTPClient.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/NTPClient.lib	Tue Jan 03 13:02:14 2017 +0000
+++ b/NTPClient.lib	Tue Jan 03 16:26:45 2017 +0000
@@ -1,1 +1,1 @@
-https://developer.mbed.org/teams/ST-Expansion-SW-Team/code/NTPClient/#510bffa8b3d9
+https://developer.mbed.org/teams/ST-Expansion-SW-Team/code/NTPClient/#2ac816b0f4ab

--- 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");