1 files changed, 258 insertions, 0 deletions
diff --git a/gr-uhd/lib/gr_uhd_usrp_source.cc b/gr-uhd/lib/gr_uhd_usrp_source.cc
new file mode 100644
index 000000000..9983489c3
--- /dev/null
+++ b/gr-uhd/lib/gr_uhd_usrp_source.cc
@@ -0,0 +1,258 @@
+/*
+ * Copyright 2010-2011 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio 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, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include <gr_uhd_usrp_source.h>
+#include <gr_io_signature.h>
+#include <stdexcept>
+#include <iostream>
+#include <boost/format.hpp>
+
+/***********************************************************************
+ * UHD Multi USRP Source Impl
+ **********************************************************************/
+class uhd_usrp_source_impl : public uhd_usrp_source{
+public:
+    uhd_usrp_source_impl(
+        const uhd::device_addr_t &device_addr,
+        const uhd::io_type_t &io_type,
+        size_t num_channels
+    ):
+        gr_sync_block(
+            "gr uhd usrp source",
+            gr_make_io_signature(0, 0, 0),
+            gr_make_io_signature(num_channels, num_channels, io_type.size)
+        ),
+        _type(io_type),
+        _nchan(num_channels),
+        _stream_now(_nchan == 1),
+        _tmp_buffs(_nchan)
+    {
+        _dev = uhd::usrp::multi_usrp::make(device_addr);
+    }
+
+    void set_subdev_spec(const std::string &spec, size_t mboard){
+        return _dev->set_rx_subdev_spec(spec, mboard);
+    }
+
+    void set_samp_rate(double rate){
+        _dev->set_rx_rate(rate);
+    }
+
+    double get_samp_rate(void){
+        return _dev->get_rx_rate();
+    }
+
+    uhd::tune_result_t set_center_freq(
+        const uhd::tune_request_t tune_request, size_t chan
+    ){
+        return _dev->set_rx_freq(tune_request, chan);
+    }
+
+    double get_center_freq(size_t chan){
+        return _dev->get_rx_freq(chan);
+    }
+
+    uhd::freq_range_t get_freq_range(size_t chan){
+        return _dev->get_rx_freq_range(chan);
+    }
+
+    void set_gain(double gain, size_t chan){
+        return _dev->set_rx_gain(gain, chan);
+    }
+
+    void set_gain(double gain, const std::string &name, size_t chan){
+        return _dev->set_rx_gain(gain, name, chan);
+    }
+
+    double get_gain(size_t chan){
+        return _dev->get_rx_gain(chan);
+    }
+
+    double get_gain(const std::string &name, size_t chan){
+        return _dev->get_rx_gain(name, chan);
+    }
+
+    std::vector<std::string> get_gain_names(size_t chan){
+        return _dev->get_rx_gain_names(chan);
+    }
+
+    uhd::gain_range_t get_gain_range(size_t chan){
+        return _dev->get_rx_gain_range(chan);
+    }
+
+    uhd::gain_range_t get_gain_range(const std::string &name, size_t chan){
+        return _dev->get_rx_gain_range(name, chan);
+    }
+
+    void set_antenna(const std::string &ant, size_t chan){
+        return _dev->set_rx_antenna(ant, chan);
+    }
+
+    std::string get_antenna(size_t chan){
+        return _dev->get_rx_antenna(chan);
+    }
+
+    std::vector<std::string> get_antennas(size_t chan){
+        return _dev->get_rx_antennas(chan);
+    }
+
+    void set_bandwidth(double bandwidth, size_t chan){
+        return _dev->set_rx_bandwidth(bandwidth, chan);
+    }
+
+    uhd::sensor_value_t get_dboard_sensor(const std::string &name, size_t chan){
+        return _dev->get_rx_sensor(name, chan);
+    }
+
+    std::vector<std::string> get_dboard_sensor_names(size_t chan){
+        return _dev->get_rx_sensor_names(chan);
+    }
+
+    uhd::sensor_value_t get_mboard_sensor(const std::string &name, size_t mboard){
+        return _dev->get_mboard_sensor(name, mboard);
+    }
+
+    std::vector<std::string> get_mboard_sensor_names(size_t mboard){
+        return _dev->get_mboard_sensor_names(mboard);
+    }
+
+    void set_clock_config(const uhd::clock_config_t &clock_config, size_t mboard){
+        return _dev->set_clock_config(clock_config, mboard);
+    }
+
+    double get_clock_rate(size_t mboard){
+        return _dev->get_master_clock_rate(mboard);
+    }
+
+    void set_clock_rate(double rate, size_t mboard){
+        return _dev->set_master_clock_rate(rate, mboard);
+    }
+
+    uhd::time_spec_t get_time_now(size_t mboard = 0){
+        return _dev->get_time_now(mboard);
+    }
+
+    uhd::time_spec_t get_time_last_pps(size_t mboard){
+        return _dev->get_time_last_pps(mboard);
+    }
+
+    void set_time_now(const uhd::time_spec_t &time_spec, size_t mboard){
+        return _dev->set_time_now(time_spec, mboard);
+    }
+
+    void set_time_next_pps(const uhd::time_spec_t &time_spec){
+        return _dev->set_time_next_pps(time_spec);
+    }
+
+    void set_time_unknown_pps(const uhd::time_spec_t &time_spec){
+        return _dev->set_time_unknown_pps(time_spec);
+    }
+
+    uhd::usrp::dboard_iface::sptr get_dboard_iface(size_t chan){
+        return _dev->get_rx_dboard_iface(chan);
+    }
+
+    uhd::usrp::multi_usrp::sptr get_device(void){
+        return _dev;
+    }
+
+/***********************************************************************
+ * Work
+ **********************************************************************/
+    int work(
+        int noutput_items,
+        gr_vector_const_void_star &input_items,
+        gr_vector_void_star &output_items
+    ){
+        //wait for a packet to become available
+        size_t num_samps = _dev->get_device()->recv(
+            output_items, noutput_items, _metadata,
+            _type, uhd::device::RECV_MODE_ONE_PACKET, 1.0
+        );
+
+        //handle possible errors conditions
+        switch(_metadata.error_code){
+        case uhd::rx_metadata_t::ERROR_CODE_NONE:
+            break;
+
+        case uhd::rx_metadata_t::ERROR_CODE_OVERFLOW:
+            //ignore overflows and try work again
+            return work(noutput_items, input_items, output_items);
+
+        default:
+            std::cout << boost::format(
+                "UHD source block got error code 0x%x"
+            ) % _metadata.error_code << std::endl;
+            return num_samps;
+        }
+
+        //advance the pointers and count by num_samps
+        noutput_items -= num_samps;
+        for (size_t i = 0; i < _nchan; i++){
+            _tmp_buffs[i] = static_cast<char *>(output_items[i]) + num_samps*_type.size;
+        }
+
+        //receive all available packets without timeout
+        num_samps += _dev->get_device()->recv(
+            _tmp_buffs, noutput_items, _metadata,
+            _type, uhd::device::RECV_MODE_FULL_BUFF, 0.0
+        );
+
+        return num_samps;
+    }
+
+    bool start(void){
+        //setup a stream command that starts streaming slightly in the future
+        static const double reasonable_delay = 0.1; //order of magnitude over RTT
+        uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
+        stream_cmd.stream_now = _stream_now;
+        stream_cmd.time_spec = get_time_now() + uhd::time_spec_t(reasonable_delay);
+        _dev->issue_stream_cmd(stream_cmd);
+        return true;
+    }
+
+    bool stop(void){
+        _dev->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS);
+        return true;
+    }
+
+private:
+    uhd::usrp::multi_usrp::sptr _dev;
+    const uhd::io_type_t _type;
+    size_t _nchan;
+    bool _stream_now;
+    gr_vector_void_star _tmp_buffs;
+    uhd::rx_metadata_t _metadata;
+};
+
+
+/***********************************************************************
+ * Make UHD Multi USRP Source
+ **********************************************************************/
+boost::shared_ptr<uhd_usrp_source> uhd_make_usrp_source(
+    const uhd::device_addr_t &device_addr,
+    const uhd::io_type_t &io_type,
+    size_t num_channels
+){
+    return boost::shared_ptr<uhd_usrp_source>(
+        new uhd_usrp_source_impl(device_addr, io_type, num_channels)
+    );
+}