David Smart / Mbed 2 deprecated SSDP_Server

An example demonstrating SSDP Discovery and a companion Web Server.

Dependencies:   mbed mbed-rtos Watchdog SW_HTTPServer SW_String EthernetInterface TimeInterface SSDP

This example program provides a framework -by- example.

It makes itself discoverable to the network using SSDP. From there, it is easy to access the embedded web server to interact with the embedded node.

The example, built on the LPC1768, provides interaction to turn the LEDs on and off via a web page that is discovered using the SSDP protocol.

It also picks up time via an NTP server.

Diff: main.cpp

Revision:
4:5da66fab599c
Parent:
0:de1dfa2ab813
Child:
5:6244e237def1
Child:
7:776244e5765a
--- a/main.cpp	Tue Jul 10 23:16:02 2018 +0000
+++ b/main.cpp	Fri Aug 31 22:51:15 2018 +0000
@@ -18,24 +18,44 @@
 Watchdog wd;
 time_t lastboottime;
 
+PwmOut signOfLife(LED4);        // LED sign of life. 100% WD reset, 20% restart, sine-wave: running
+
 //FlashFileSystem flash("flash");             // static files here for reliability and speed
 LocalFileSystem local("local");             // some place to hold settings and maybe the static web pages
-
 const char * Server_Root = "/local";
 
 // public for the WebPages handler to see
 //
 const char * BUILD_DATE = __DATE__ " " __TIME__;
 const char * PROG_NAME = "SSDP Server";
-const char * My_Name = "MBED SSDP Node";
+char * My_Name = "MBED SSDP Node";
 const char * My_SerialNum = "0000001";
-const int Server_Port = 80;
+int Server_Port = 80;
 // end public information
 
 
+
+
+/// ShowSignOfLife
+///
+/// Pulse an LED to indicate a sign of life of the program.
+/// This also has some moderate entertainment value.
+///
+void ShowSignOfLife(int degreeIncrement = 1)
+{
+#define PI 3.14159265359
+    static int degrees = 0;
+    float v;
+
+    degrees += degreeIncrement;
+    v = sin(degrees * PI / 180)/2 + 0.5;
+    signOfLife = v;     // a little dimmer
+}
+
 int main() {
     pc.baud(460800);
     pc.printf("\r\n%s Build %s\r\n", PROG_NAME, BUILD_DATE);
+    lastboottime = ntp.timelocal();
     if (wd.WatchdogCausedReset()) {
         pc.printf("**** Watchdog Event caused reset at %s ****\r\n", ntp.ctime(&lastboottime));
     }
@@ -48,11 +68,23 @@
     HTTPServer svr(Server_Port, Server_Root, 15, 30, 20, 50, &pc);
     svr.RegisterHandler("/", RootPage);
     svr.RegisterHandler("/setup.xml", Setup_xml);
-    SSDP ssdp("Friendly Node", eth.getMACAddress(), eth.getIPAddress(), Server_Port);
-    
+    SSDP ssdp(My_Name, eth.getMACAddress(), eth.getIPAddress(), Server_Port);
+
+    ntp.set_dst("3/11,2:00","11/4,2:00");   // mm/dd,hh:mm
+    ntp.set_tzo_min(-360);
+    int res = ntp.setTime("pool.ntp.org");
+
     while (1) {
         wd.Service();
         svr.Poll();         // non-blocking, but also not deterministic
         Thread::yield();
+        ShowSignOfLife(10);
+        static time_t tLast;
+        time_t tNow = ntp.timelocal();
+        if (tNow != tLast) {
+            printf("time is %s\r\n", ntp.ctime(&tNow));
+            tLast = tNow;
+        }
+        //printf("Mem: %5d, %5d %5d\n", Thread::used_stack(), Thread::max_stack(), Thread::stack_size());
     }
 }