SolderSplash
Small demo to purely test UDP, depends on the module already being configured to auto connect to an access point
Dependencies: USBDevice cc3000_hostdriver_mbedsocket mbed
Fork of
WifiDipCortex-UDPDemo
by 
Carl - SolderSplash Labs
Wifi-DipCortex - Test application that shows you how to listen for UDP message on one port while sending messages on another
- Listens on UDP_LISTEN_PORT, upon data being recvied it can be found in UDP_RecvBuffer - Transmits UDP_TX_Buffer on UDP_TARGET_PORT to UDP_TARGET_IP
Diff: main.cpp
- Revision:
- 2:6813713a64e1
- Parent:
- 1:5fa4efb214e7
- Child:
- 3:3fd4a328c7cf
--- a/main.cpp Wed Jul 09 19:27:41 2014 +0000
+++ b/main.cpp Thu Jul 10 16:52:10 2014 +0000
@@ -26,13 +26,15 @@
// USB CDC serial port
USBSerial pc;
+
+char LOCALHOST[] = "localhost";
const char UDP_TX_Buffer[] = {0,0,0,0,0,1,0,0,0,0,0,0,6,0x61,0x61,0x61,0x61,0x61,0x61,5,0x6c,0x6f,0x63,0x61,0x6c,0,0,1,0,1};
// Multicast address - this causes issues with firmware version 1.28
-//const char* UDP_TARGET_IP = "224.0.0.251";
+const char* UDP_TARGET_IP = "224.0.0.251";
// This is the broadcast address for the subnet 192.168.0.x
-const char* UDP_TARGET_IP = "192.168.0.255";
+//const char* UDP_TARGET_IP = "192.168.0.255";
const int UDP_TARGET_PORT = 5353;
UDPSocket UDP_TransmitSocket;
@@ -52,7 +54,7 @@
{
tNetappIpconfigRetArgs ipinfo;
- while (! ( wifi.is_dhcp_configured() ) )
+ while (! ( wifi.is_connected() ) )
{
// Still not connected
pc.printf("No Connection\r\n");
@@ -199,6 +201,30 @@
// ------------------------------------------------------------------------------------------------------------
/*!
+ @brief SetupSockets - Sets up the UDP sockets and resolves localhost to work around internal CC3000 issues
+*/
+// ------------------------------------------------------------------------------------------------------------
+void SetupSockets ( void )
+{
+uint32_t ip;
+
+ // Connected, v1.28 firmware workaround, ask for localhost to be resolved
+ wifi._socket.gethostbyname((uint8_t *)LOCALHOST,strlen((const char *)LOCALHOST), &ip);
+
+ // Ignore the result, ask again
+ wifi._socket.gethostbyname((uint8_t *)LOCALHOST,strlen((const char *)LOCALHOST), &ip);
+
+ // Ignore the result
+
+ // set up a lisening socket
+ UdpRx_Init();
+ UdpTx_Init();
+
+}
+
+
+// ------------------------------------------------------------------------------------------------------------
+/*!
@brief main loop
*/
// ------------------------------------------------------------------------------------------------------------
@@ -217,27 +243,45 @@
WaitForConnection();
- // set up a lisening socket
- UdpRx_Init();
- UdpTx_Init();
+ SetupSockets();
while (1)
{
- // Check for UDP coms, non blocking
- UdpRx();
+
+ if ( wifi.is_connected() )
+ {
+ // Check for UDP coms, non blocking
+ UdpRx();
+
+ if ( tickCnt > 100 )
+ {
+ tickCnt = 0;
+ // And then send a UDP message
+ UdpTx();
+ }
+
+ tickCnt ++;
+ }
+ else
+ {
+ // We have lost connection, tell the objects to close the sockets
+ // this clears down the socket handles
+ UDP_RecvSocket.close();
+ UDP_TransmitSocket.close();
+
+ wifi.restart(0);
+
+ // Block and wait for re-connection
+ WaitForConnection();
+
+ // set up a lisening and transmit socket
+ SetupSockets();
+ }
// TODO : Do other things, like service sensors etc..
// For now lets simulate a task that lasts for 100ms
wait(0.1);
pc.printf(".");
-
- if ( tickCnt > 100 )
- {
- tickCnt = 0;
- // And then send a UDP message
- UdpTx();
- }
- tickCnt ++;
}
}
\ No newline at end of file