Add doc/update API for NFCTarget

features/nfc/nfc/NFCTarget.h

@@ -26,24 +26,73 @@
 namespace mbed {
 namespace nfc {
 
+    /**
+     * @addtogroup nfc
+     * @{
+     */
+    
+    /**
+     * This class represents a NFC target (either a remote target when the local controller in in initiator mode, or a target connected through a wired connection).
+     * 
+     * A target can be a NFC tag/card, a NFC-enabled phone or other NFC device capable of modulating a RF field.
+     */ 
     class NFCTarget : public NFCNDEFCapable {
     public:
+        /**
+         * Create a NFCTarget.
+         */ 
         NFCTarget();
         virtual ~NFCTarget();
 
         struct Delegate {
+            /**
+             * The NDEF message erasing request completed.
+             * 
+             * @param[in] result NFC_OK or an error code on failure
+             */ 
             virtual void on_ndef_message_erased(nfc_err_t result) {}
+
+            /**
+             * The NDEF message writing request completed.
+             * 
+             * @param[in] result NFC_OK or an error code on failure
+             */ 
             virtual void on_ndef_message_written(nfc_err_t result) {}
+
+            /**
+             * The NDEF message reading request completed.
+             * 
+             * @param[in] result NFC_OK or an error code on failure
+             */ 
             virtual void on_ndef_message_read(nfc_err_t result) {}
         };
 
-        void set_delegate(Delegate* delegate);
+        /**
+         * Write a NDEF message to the target.
+         * 
+         * on_ndef_message_written() will be called on completion.
+         */ 
+        virtual void write_ndef_message() = 0;
 
-        void write_ndef_message();
-        void read_ndef_message();
-        void erase_ndef_message();
+        /**
+         * Read a NDEF message from the target.
+         * 
+         * on_ndef_message_read() will be called on completion.
+         */ 
+        virtual void read_ndef_message() = 0;
+        
+        /**
+         * Erase the NDEF message in the target.
+         * 
+         * on_ndef_message_erased() will be called on completion.
+         */ 
+        virtual void erase_ndef_message() = 0;
     };
 
+    /**
+     * @}
+     */
+
 } // namespace nfc
 } // namespace mbed