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diff --git a/host/lib/usrp/usrp2/usrp2_iface.hpp b/host/lib/usrp/usrp2/usrp2_iface.hpp
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+++ b/host/lib/usrp/usrp2/usrp2_iface.hpp
@@ -0,0 +1,85 @@
+//
+// Copyright 2010-2012 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#ifndef INCLUDED_USRP2_IFACE_HPP
+#define INCLUDED_USRP2_IFACE_HPP
+
+#include <uhd/transport/udp_simple.hpp>
+#include <uhd/types/serial.hpp>
+#include <uhd/usrp/mboard_eeprom.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/utility.hpp>
+#include <boost/function.hpp>
+#include "usrp2_regs.hpp"
+#include "wb_iface.hpp"
+#include <string>
+
+/*!
+ * The usrp2 interface class:
+ * Provides a set of functions to implementation layer.
+ * Including spi, peek, poke, control...
+ */
+class usrp2_iface : public wb_iface, public uhd::spi_iface, public uhd::i2c_iface{
+public:
+    typedef boost::shared_ptr<usrp2_iface> sptr;
+    /*!
+     * Make a new usrp2 interface with the control transport.
+     * \param ctrl_transport the udp transport object
+     * \return a new usrp2 interface object
+     */
+    static sptr make(uhd::transport::udp_simple::sptr ctrl_transport);
+
+    //! poke a register in the virtual fw table
+    virtual void pokefw(wb_addr_type addr, boost::uint32_t data) = 0;
+
+    //! peek a register in the virtual fw table
+    virtual boost::uint32_t peekfw(wb_addr_type addr) = 0;
+
+    //! The list of possible revision types
+    enum rev_type {
+        USRP2_REV3 = 3,
+        USRP2_REV4 = 4,
+        USRP_N200 = 200,
+        USRP_N200_R4 = 201,
+        USRP_N210 = 210,
+        USRP_N210_R4 = 211,
+        USRP_NXXX = 0
+    };
+
+    //! Get the revision type for this device
+    virtual rev_type get_rev(void) = 0;
+
+    //! Get the canonical name for this device
+    virtual const std::string get_cname(void) = 0;
+
+    //! Lock the device to this iface
+    virtual void lock_device(bool lock) = 0;
+
+    //! Is this device locked?
+    virtual bool is_device_locked(void) = 0;
+
+    //! A version string for firmware
+    virtual const std::string get_fw_version_string(void) = 0;
+
+    //! Construct a helpful warning message for images
+    virtual std::string images_warn_help_message(void) = 0;
+
+    //motherboard eeprom map structure
+    uhd::usrp::mboard_eeprom_t mb_eeprom;
+};
+
+#endif /* INCLUDED_USRP2_IFACE_HPP */