USBSerial echo test program

Dependencies:   USBDevice mbed

Revision:
1:38bc94601712
Parent:
0:e203d163c8f6
--- a/main.cpp	Mon Jun 02 07:27:26 2014 +0000
+++ b/main.cpp	Mon Jun 02 08:13:39 2014 +0000
@@ -10,7 +10,7 @@
     while(1)
     {
         serial.scanf("%s", buf);
-        serial.printf("USBSerial: %s\r\n", buf);
-        pc.printf("UARTrecv: %s\r\n", buf);
+        serial.printf("USBSerial: %s\r\n", buf); // USBport
+        pc.printf("UARTrecv: %s\r\n", buf);      // UARTport
     }
 }
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