SolderSplash / Mbed 2 deprecated WifiDipCortex-UDPDemo

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

Files at this revision

API Documentation at this revision

Revision 3:3fd4a328c7cf, committed 2014-08-07

Comitter:
SolderSplashLabs
Date:
Thu Aug 07 00:40:04 2014 +0000
Parent:
2:6813713a64e1
Commit message:
Added Smartconfig; Added disconnection detection; Re-connection after disconnection, not functioning; PC app here to exercise the UDP connection : https://github.com/SolderSplashLabs/PC-UDP-Example

Changed in this revision

cc3000_hostdriver_mbedsocket.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/cc3000_hostdriver_mbedsocket.lib	Thu Jul 10 16:52:10 2014 +0000
+++ b/cc3000_hostdriver_mbedsocket.lib	Thu Aug 07 00:40:04 2014 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/SolderSplashLabs/code/cc3000_hostdriver_mbedsocket/#ca8c234997c0
+http://mbed.org/users/SolderSplashLabs/code/cc3000_hostdriver_mbedsocket/#974ff993d863

--- a/main.cpp	Thu Jul 10 16:52:10 2014 +0000
+++ b/main.cpp	Thu Aug 07 00:40:04 2014 +0000
@@ -23,10 +23,11 @@
 cc3000 wifi(p28, p27, p30, SPI(p21, p14, p37));
 Serial uart(p19, p20);
 
+DigitalIn Button(P0_1);
+
 // 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};
 
@@ -36,15 +37,46 @@
 // This is the broadcast address for the subnet 192.168.0.x
 //const char* UDP_TARGET_IP = "192.168.0.255";
 
-const int UDP_TARGET_PORT = 5353;
+const int UDP_TARGET_PORT = 1900;
 UDPSocket UDP_TransmitSocket;
 
-const int UDP_LISTEN_PORT = 11028;
+const int UDP_LISTEN_PORT = 1900;
 UDPSocket UDP_RecvSocket;
 
-#define UDP_RECV_BUF_LEN 512
+#define UDP_RECV_BUF_LEN 1400
 uint8_t UDP_RecvBuffer[ UDP_RECV_BUF_LEN ];
 
+
+// ------------------------------------------------------------------------------------------------------------
+/*!
+    @brief WaitForConnection
+*/
+// ------------------------------------------------------------------------------------------------------------
+void SmartConfig ( void )
+{
+    pc.printf("\r\nStarting Smart config, waiting for message from smartphone app ....\r\n");
+    
+    // We dont want to auto reconnect to an access point
+    wifi._wlan.ioctl_set_connection_policy(0, 0, 0);
+    
+    // start smart config will disconnect, set the prefix
+    // wait for a message via a SmartConfig app, store it to the profile list
+    // finally it will reenable auto connection, triggering the module to connect to the new access point
+    wifi.start_smart_config(0);
+    
+    pc.printf("\r\nSmartConfig complete\r\n");
+    
+    while (! Button )
+    {
+        // Wait for release
+        pc.printf("Release the button\r\n");
+        wait(1);
+    }
+    
+    // NOTE : normal once connected using SmartConfig you would enable the mdns server to tell the app your connected
+    // but that would interfere with this example using the mdns port
+}
+
 // ------------------------------------------------------------------------------------------------------------
 /*!
     @brief WaitForConnection
@@ -52,13 +84,20 @@
 // ------------------------------------------------------------------------------------------------------------
 void WaitForConnection ( void )
 {
+uint8_t buffer[8];
 tNetappIpconfigRetArgs ipinfo;
     
     while (! ( wifi.is_connected() ) )
     {
         // Still not connected
-        pc.printf("No Connection\r\n");
+        pc.printf("No Connection - hold button for smartconfig\r\n");
         wait(1);
+        
+        if (! Button )
+        {
+            // Button has been pressed
+            SmartConfig();
+        }
     }
     
     if (( wifi.is_enabled() ) && ( wifi.is_dhcp_configured() ))
@@ -67,6 +106,14 @@
     }
     
     pc.printf("Connected to (%s) %s \r\n", ipinfo.uaSSID, wifi.getIPAddress());
+    
+    wifi.get_mac_address(buffer);
+    pc.printf(" MAC address : %02x:%02x:%02x:%02x:%02x:%02x\r\n", buffer[0], buffer[1], buffer[2], buffer[3], buffer[4], buffer[5]);
+    
+    if (! wifi._nvmem.read_sp_version( (unsigned char*)&buffer[0] ) )
+    {
+        pc.printf(" CC3000 Firmware Version : %u.%u \r\n", buffer[0], buffer[1]);
+    }
 
 }
 
@@ -118,7 +165,7 @@
  
     target.set_address(UDP_TARGET_IP, UDP_TARGET_PORT);
     
-    pc.printf("Sending UDP Message ..\r\n");
+    pc.printf("Sending UDP Message to port (%i)..\r\n", UDP_TARGET_PORT);
     
     returnVal = UDP_TransmitSocket.sendTo(target, (char *)UDP_TX_Buffer, sizeof(UDP_TX_Buffer));
         
@@ -167,15 +214,21 @@
 {
 Endpoint client;
 int returnVal = 0;
-    
-    returnVal = UDP_RecvSocket.receiveFrom(client, (char *)UDP_RecvBuffer, UDP_RECV_BUF_LEN);
-    
-    if ( returnVal > 0 )
+
+    do
     {
-        pc.printf("UDP Message Recv'd %i bytes from : %s \r\n", returnVal, client.get_address());
+        returnVal = UDP_RecvSocket.receiveFrom(client, (char *)UDP_RecvBuffer, UDP_RECV_BUF_LEN);
+        
+        if ( returnVal > 0 )
+        {
+            pc.printf("UDP Message Recv'd %i bytes from : %s \r\n", returnVal, client.get_address());
         
-        // TODO : Process your UDP message here        
-    }
+            // TODO : Process your UDP message here  
+            // NOTE : a message larger than your CC3000 SPI buffer and the UDP_RECV_BUF_LEN will be split up into multiple receiveFrom calls
+            // NOTE : multiple messages on a UDP port seem to get merged.       
+        }
+        
+    } while ( returnVal > 0 );
 }
 
 // ------------------------------------------------------------------------------------------------------------
@@ -196,6 +249,8 @@
     
     uart.baud(SERIAL_BAUD_RATE);
     
+    Button.mode(PullUp);
+    
     wait(1);
 }
 
@@ -222,7 +277,6 @@
 
 }
 
-
 // ------------------------------------------------------------------------------------------------------------
 /*!
     @brief main loop
@@ -271,6 +325,8 @@
             
             wifi.restart(0);
             
+            wifi._wlan.ioctl_set_connection_policy(0, 1, 1);
+            
             // Block and wait for re-connection
             WaitForConnection();
     
@@ -282,6 +338,12 @@
         // For now lets simulate a task that lasts for 100ms
         wait(0.1);
         pc.printf(".");
+        
+        // If the user presses the button, send a message
+        if (! Button )
+        {
+            UdpTx();
+        }
     }
    
 }
\ No newline at end of file