Diff: PMK_UDP_server.cpp

Revision:

0:946ce6cfc0e9

diff -r 000000000000 -r 946ce6cfc0e9 PMK_UDP_server.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PMK_UDP_server.cpp	Tue May 03 22:13:15 2011 +0000
@@ -0,0 +1,61 @@
+#include "mbed.h"
+#include "EthernetNetIf.h"
+#include "UDPSocket.h"
+
+DigitalOut led4(LED4, "led4");
+
+//EthernetNetIf eth ;
+EthernetNetIf eth(
+  IpAddr(192,168,1,110), //IP Address
+  IpAddr(255,255,255,0), //Network Mask
+  IpAddr(192,168,0,1), //Gateway
+  IpAddr(192,168,0,1)  //DNS
+);
+
+UDPSocket udp;
+int global_counter=0;
+void onUDPSocketEvent(UDPSocketEvent e)
+{
+  switch(e)
+  {
+  case UDPSOCKET_READABLE: //The only event for now
+    char buf[64] = {0};
+    Host host;
+    while( int len = udp.recvfrom( buf, 63, &host ) )
+    {
+      if( len <= 0 )
+        break;
+      printf("Received from %d.%d.%d.%d: %s and sent back to goup\r\n", host.getIp()[0], host.getIp()[1], host.getIp()[2], host.getIp()[3], buf);
+    }
+    udp.sendto( buf,strlen(buf)+1, &host );
+    break;
+  }
+}
+
+int main() {
+  printf("Setting up...\n");
+  EthernetErr ethErr = eth.setup(30000);
+  if(ethErr)
+  {
+    printf("Error %d in setup.\n", ethErr);
+    return -1;
+  }
+  printf("Setup OK\n");
+  
+  Host multicast(IpAddr(224,0,0,0), 50000); //Join multicast group on port 50000
+ 
+  udp.setOnEvent(&onUDPSocketEvent);  
+  udp.bind(multicast);
+  
+  Timer tmr;
+  tmr.start();
+  while(true)
+  {
+    Net::poll();
+    if(tmr.read() > 0.5)
+    {
+      led4=!led4; //Show that we are alive
+      tmr.reset();
+    }
+  }  
+}