1 files changed, 100 insertions, 0 deletions
diff --git a/host/lib/usrp/usrp2/io_impl.cpp b/host/lib/usrp/usrp2/io_impl.cpp
new file mode 100644
index 000000000..b6ab919e7
--- /dev/null
+++ b/host/lib/usrp/usrp2/io_impl.cpp
@@ -0,0 +1,100 @@
+//
+// Copyright 2010 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/>.
+//
+
+#include "usrp2_impl.hpp"
+#include "usrp2_regs.hpp"
+#include <uhd/transport/convert_types.hpp>
+#include <boost/format.hpp>
+#include <boost/asio.hpp> //htonl and ntohl
+#include <iostream>
+
+using namespace uhd;
+using namespace uhd::usrp;
+using namespace uhd::transport;
+namespace asio = boost::asio;
+
+/***********************************************************************
+ * Helper Functions
+ **********************************************************************/
+void usrp2_impl::io_init(void){
+    //setup rx otw type
+    _rx_otw_type.width = 16;
+    _rx_otw_type.shift = 0;
+    _rx_otw_type.byteorder = otw_type_t::BO_BIG_ENDIAN;
+
+    //setup tx otw type
+    _tx_otw_type.width = 16;
+    _tx_otw_type.shift = 0;
+    _tx_otw_type.byteorder = otw_type_t::BO_BIG_ENDIAN;
+
+    //send a small data packet so the usrp2 knows the udp source port
+    managed_send_buffer::sptr send_buff = _data_transport->get_send_buff();
+    boost::uint32_t data = htonl(USRP2_INVALID_VRT_HEADER);
+    memcpy(send_buff->cast<void*>(), &data, sizeof(data));
+    send_buff->done(sizeof(data));
+
+    //setup RX DSP regs
+    std::cout << "RX samples per packet: " << get_max_recv_samps_per_packet() << std::endl;
+    _iface->poke32(FR_RX_CTRL_NSAMPS_PER_PKT, get_max_recv_samps_per_packet());
+    _iface->poke32(FR_RX_CTRL_NCHANNELS, 1);
+    _iface->poke32(FR_RX_CTRL_CLEAR_OVERRUN, 1); //reset
+    _iface->poke32(FR_RX_CTRL_VRT_HEADER, 0
+        | (0x1 << 28) //if data with stream id
+        | (0x1 << 26) //has trailer
+        | (0x3 << 22) //integer time other
+        | (0x1 << 20) //fractional time sample count
+    );
+    _iface->poke32(FR_RX_CTRL_VRT_STREAM_ID, 0);
+    _iface->poke32(FR_RX_CTRL_VRT_TRAILER, 0);
+}
+
+/***********************************************************************
+ * Send Data
+ **********************************************************************/
+size_t usrp2_impl::send(
+    const asio::const_buffer &buff,
+    const tx_metadata_t &metadata,
+    const io_type_t &io_type,
+    send_mode_t send_mode
+){
+    return vrt_packet_handler::send(
+        _packet_handler_send_state, //last state of the send handler
+        buff, metadata, send_mode,  //buffer to empty and samples metadata
+        io_type, _tx_otw_type,      //input and output types to convert
+        get_master_clock_freq(),    //master clock tick rate
+        _data_transport,            //zero copy interface
+        get_max_send_samps_per_packet()
+    );
+}
+
+/***********************************************************************
+ * Receive Data
+ **********************************************************************/
+size_t usrp2_impl::recv(
+    const asio::mutable_buffer &buff,
+    rx_metadata_t &metadata,
+    const io_type_t &io_type,
+    recv_mode_t recv_mode
+){
+    return vrt_packet_handler::recv(
+        _packet_handler_recv_state, //last state of the recv handler
+        buff, metadata, recv_mode,  //buffer to fill and samples metadata
+        io_type, _rx_otw_type,      //input and output types to convert
+        get_master_clock_freq(),    //master clock tick rate
+        _data_transport             //zero copy interface
+    );
+}