Diff: main.cpp

Revision:

3:2d6cf1043ca6

Parent:

0:e18c3e98ed3d

--- a/main.cpp	Wed May 14 15:36:56 2014 +0000
+++ b/main.cpp	Thu Oct 30 17:08:27 2014 +0000
@@ -1,25 +1,31 @@
+/**********************************************************
+*file:udp broadcast
+*Creator:JacobShi
+*Time:2014/10/30
+* Description:make the mbed take the role of broadcasting
+ *********************************************************/
+
 #include "mbed.h"
 #include "EthernetInterface.h"
-
-const int BROADCAST_PORT = 58083;
+const int BROADCAST_PORT = 8080;
+char data_buffer[100];
 
 int main() {
     EthernetInterface eth;
     eth.init(); //Use DHCP
     eth.connect();
-    
+    printf("%s\n",eth.getIPAddress() );
     UDPSocket sock;
     sock.init();
     sock.set_broadcasting();
-    
     Endpoint broadcast;
     broadcast.set_address("255.255.255.255", BROADCAST_PORT);
-    
-    char out_buffer[] = "very important data";
-    
+        sock.sendTo(broadcast, "Hello", sizeof("Hello"));
+
     while (true) {
-        printf("Broadcasting...\n");
-        sock.sendTo(broadcast, out_buffer, sizeof(out_buffer));
-        Thread::wait(1000);
+      int n=sock.receiveFrom(broadcast,data_buffer,sizeof(data_buffer));
+      data_buffer[n]='\0';
+      printf("%s\n",data_buffer ); 
+        
     }
-}
+    }
\ No newline at end of file