Diff: main.cpp

Revision:

0:0946c896455e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Oct 27 22:37:47 2011 +0000
@@ -0,0 +1,106 @@
+//---------------------------------------------------------------------------------------------
+#include "mbed.h"
+#include "EthernetNetIf.h"
+#include "HTTPClient.h"
+//---------------------------------------------------------------------------------------------
+DigitalOut myled(LED1);
+Serial pc(USBTX, USBRX); // tx, rx
+//---------------------------------------------------------------------------------------------
+#define internaldebug // send debug messages to USB Serial port (9600,1,N)
+#define dhcpenable    // auto-setup IP Address from DHCP router
+//---------------------------------------------------------------------------------------------
+// Ethernet Object Setup
+//---------------------------------------------------------------------------------------------
+#ifdef dhcpenable
+  EthernetNetIf eth;  
+#else
+  EthernetNetIf eth(
+    IpAddr(192,168,1,100), //IP Address
+    IpAddr(255,255,255,0), //Network Mask
+    IpAddr(192,168,1,254), //Gateway
+    IpAddr(192,168,1,254)  //DNS
+  );
+#endif
+//---------------------------------------------------------------------------------------------
+// HttpClient
+HTTPClient http;
+
+HTTPResult result;
+bool completed = false;
+void request_callback(HTTPResult r)
+{
+  result = r;
+  completed = true;
+}
+//---------------------------------------------------------------------------------------------
+// MAIN
+//---------------------------------------------------------------------------------------------
+int main() 
+{
+  // Set Serial Port Transfer Rate
+  pc.baud(115200);  
+
+  //--------------------------------------------------------
+  // Setting Ethernet
+  //--------------------------------------------------------    
+  #ifdef internaldebug
+    printf("\r\nSetting up Ethernet interface!\r\n");
+  #endif
+  // Create return object for error check
+  EthernetErr ethErr = eth.setup(); 
+  if(ethErr)
+  {
+    #ifdef internaldebug
+      printf("\r\nError %d in Ethernet setup.\r\n", ethErr);
+    #endif
+    return -1;
+  }
+  #ifdef internaldebug
+    printf("\r\nEthernet setup completed with success!\r\n");
+  #endif  
+  //--------------------------------------------------------    
+
+  //--------------------------------------------------------    
+  // HTTP Get Stream Request
+  //--------------------------------------------------------    
+  HTTPStream stream;
+  
+  char BigBuf[512 + 1] = {0};
+  stream.readNext((byte*)BigBuf, 512); //Point to buffer for the first read
+  
+  printf("\r\nHttpClient Get Stream Request ...\r\n");
+  
+  HTTPResult r = http.get("http://services.sapo.pt/RSS/Feed/tek", &stream, request_callback); //Load a very large page, such as the hackaday RSS feed
+  
+  while(!completed)
+  {
+    Net::poll(); //Polls the Networking stack
+    if(stream.readable())
+    {
+      BigBuf[stream.readLen()] = 0; //Transform this buffer in a zero-terminated char* string
+      printf("%s\r\n",BigBuf); //Display it while loading
+      //Note: some servers do not like if you throttle them too much, so printf'ing during a request is generally bad practice
+      stream.readNext((byte*)BigBuf, 512); //Buffer has been read, now we can put more data in it
+    }
+  }
+  printf("\n--------------\n");
+  if(result == HTTP_OK)
+  {
+    printf("Read completely\n"); 
+  }
+  else
+  {
+    printf("Error %d\n", result);
+  }
+  //--------------------------------------------------------    
+
+  // main loop
+  while(1) 
+  {
+    myled = 1;
+    wait(0.5);
+    myled = 0;
+    wait(0.5);
+  }
+}
+//---------------------------------------------------------------------------------------------
\ No newline at end of file