aboutsummaryrefslogtreecommitdiffstats
path: root/host/lib/usrp
diff options
context:
space:
mode:
Diffstat (limited to 'host/lib/usrp')
-rw-r--r--host/lib/usrp/simple_usrp.cpp207
-rw-r--r--host/lib/usrp/tune_helper.cpp126
2 files changed, 333 insertions, 0 deletions
diff --git a/host/lib/usrp/simple_usrp.cpp b/host/lib/usrp/simple_usrp.cpp
new file mode 100644
index 000000000..4bd47dc3f
--- /dev/null
+++ b/host/lib/usrp/simple_usrp.cpp
@@ -0,0 +1,207 @@
+//
+// 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 <uhd/usrp/simple_usrp.hpp>
+#include <uhd/usrp/tune_helper.hpp>
+#include <uhd/utils/assert.hpp>
+#include <uhd/usrp/subdev_props.hpp>
+#include <uhd/usrp/mboard_props.hpp>
+#include <uhd/usrp/device_props.hpp>
+#include <uhd/usrp/dboard_props.hpp>
+#include <boost/foreach.hpp>
+#include <boost/format.hpp>
+#include <stdexcept>
+
+using namespace uhd;
+using namespace uhd::usrp;
+
+/***********************************************************************
+ * Helper Functions
+ **********************************************************************/
+static std::vector<double> get_xx_rates(wax::obj decerps, wax::obj rate){
+ std::vector<double> rates;
+ BOOST_FOREACH(size_t decerp, decerps.as<std::vector<size_t> >()){
+ rates.push_back(rate.as<double>()/decerp);
+ }
+ return rates;
+}
+
+/***********************************************************************
+ * Simple Device Implementation
+ **********************************************************************/
+class simple_usrp_impl : public simple_usrp{
+public:
+ simple_usrp_impl(const device_addr_t &addr){
+ _dev = device::make(addr);
+ _mboard = (*_dev)[DEVICE_PROP_MBOARD];
+ _rx_ddc = _mboard[named_prop_t(MBOARD_PROP_RX_DSP, "ddc0")];
+ _tx_duc = _mboard[named_prop_t(MBOARD_PROP_TX_DSP, "duc0")];
+
+ //extract rx subdevice
+ wax::obj rx_dboard = _mboard[MBOARD_PROP_RX_DBOARD];
+ std::string rx_subdev_in_use = rx_dboard[DBOARD_PROP_USED_SUBDEVS].as<prop_names_t>().at(0);
+ _rx_subdev = rx_dboard[named_prop_t(DBOARD_PROP_SUBDEV, rx_subdev_in_use)];
+
+ //extract tx subdevice
+ wax::obj tx_dboard = _mboard[MBOARD_PROP_TX_DBOARD];
+ std::string tx_subdev_in_use = tx_dboard[DBOARD_PROP_USED_SUBDEVS].as<prop_names_t>().at(0);
+ _tx_subdev = tx_dboard[named_prop_t(DBOARD_PROP_SUBDEV, tx_subdev_in_use)];
+ }
+
+ ~simple_usrp_impl(void){
+ /* NOP */
+ }
+
+ device::sptr get_device(void){
+ return _dev;
+ }
+
+ std::string get_name(void){
+ return _mboard[MBOARD_PROP_NAME].as<std::string>();
+ }
+
+ /*******************************************************************
+ * Timing
+ ******************************************************************/
+ void set_time_now(const time_spec_t &time_spec){
+ _mboard[MBOARD_PROP_TIME_NOW] = time_spec;
+ }
+
+ void set_time_next_pps(const time_spec_t &time_spec){
+ _mboard[MBOARD_PROP_TIME_NEXT_PPS] = time_spec;
+ }
+
+ /*******************************************************************
+ * Streaming
+ ******************************************************************/
+ void issue_stream_cmd(const stream_cmd_t &stream_cmd){
+ _rx_ddc[std::string("stream_cmd")] = stream_cmd;
+ }
+
+ /*******************************************************************
+ * RX methods
+ ******************************************************************/
+ void set_rx_rate(double rate){
+ double samp_rate = _rx_ddc[std::string("if_rate")].as<double>();
+ assert_has(get_rx_rates(), rate, "simple device rx rate");
+ _rx_ddc[std::string("decim")] = size_t(samp_rate/rate);
+ }
+
+ double get_rx_rate(void){
+ return _rx_ddc[std::string("bb_rate")].as<double>();
+ }
+
+ std::vector<double> get_rx_rates(void){
+ return get_xx_rates(_rx_ddc[std::string("decims")], _rx_ddc[std::string("if_rate")]);
+ }
+
+ tune_result_t set_rx_freq(double target_freq){
+ return tune_rx_subdev_and_ddc(_rx_subdev, _rx_ddc, target_freq);
+ }
+
+ freq_range_t get_rx_freq_range(void){
+ return _rx_subdev[SUBDEV_PROP_FREQ_RANGE].as<freq_range_t>();
+ }
+
+ void set_rx_gain(float gain){
+ _rx_subdev[SUBDEV_PROP_GAIN] = gain;
+ }
+
+ float get_rx_gain(void){
+ return _rx_subdev[SUBDEV_PROP_GAIN].as<float>();
+ }
+
+ gain_range_t get_rx_gain_range(void){
+ return _rx_subdev[SUBDEV_PROP_GAIN_RANGE].as<gain_range_t>();
+ }
+
+ void set_rx_antenna(const std::string &ant){
+ _rx_subdev[SUBDEV_PROP_ANTENNA] = ant;
+ }
+
+ std::string get_rx_antenna(void){
+ return _rx_subdev[SUBDEV_PROP_ANTENNA].as<std::string>();
+ }
+
+ std::vector<std::string> get_rx_antennas(void){
+ return _rx_subdev[SUBDEV_PROP_ANTENNA_NAMES].as<std::vector<std::string> >();
+ }
+
+ /*******************************************************************
+ * TX methods
+ ******************************************************************/
+ void set_tx_rate(double rate){
+ double samp_rate = _tx_duc[std::string("if_rate")].as<double>();
+ assert_has(get_tx_rates(), rate, "simple device tx rate");
+ _tx_duc[std::string("interp")] = size_t(samp_rate/rate);
+ }
+
+ double get_tx_rate(void){
+ return _tx_duc[std::string("bb_rate")].as<double>();
+ }
+
+ std::vector<double> get_tx_rates(void){
+ return get_xx_rates(_tx_duc[std::string("interps")], _tx_duc[std::string("if_rate")]);
+ }
+
+ tune_result_t set_tx_freq(double target_freq){
+ return tune_tx_subdev_and_duc(_tx_subdev, _tx_duc, target_freq);
+ }
+
+ freq_range_t get_tx_freq_range(void){
+ return _tx_subdev[SUBDEV_PROP_FREQ_RANGE].as<freq_range_t>();
+ }
+
+ void set_tx_gain(float gain){
+ _tx_subdev[SUBDEV_PROP_GAIN] = gain;
+ }
+
+ float get_tx_gain(void){
+ return _tx_subdev[SUBDEV_PROP_GAIN].as<float>();
+ }
+
+ gain_range_t get_tx_gain_range(void){
+ return _tx_subdev[SUBDEV_PROP_GAIN_RANGE].as<gain_range_t>();
+ }
+
+ void set_tx_antenna(const std::string &ant){
+ _tx_subdev[SUBDEV_PROP_ANTENNA] = ant;
+ }
+
+ std::string get_tx_antenna(void){
+ return _tx_subdev[SUBDEV_PROP_ANTENNA].as<std::string>();
+ }
+
+ std::vector<std::string> get_tx_antennas(void){
+ return _tx_subdev[SUBDEV_PROP_ANTENNA_NAMES].as<std::vector<std::string> >();
+ }
+
+private:
+ device::sptr _dev;
+ wax::obj _mboard;
+ wax::obj _rx_ddc;
+ wax::obj _tx_duc;
+ wax::obj _rx_subdev;
+ wax::obj _tx_subdev;
+};
+
+/***********************************************************************
+ * The Make Function
+ **********************************************************************/
+simple_usrp::sptr simple_usrp::make(const std::string &args){
+ return sptr(new simple_usrp_impl(device_addr_t::from_args_str(args)));
+}
diff --git a/host/lib/usrp/tune_helper.cpp b/host/lib/usrp/tune_helper.cpp
new file mode 100644
index 000000000..79a6aff7b
--- /dev/null
+++ b/host/lib/usrp/tune_helper.cpp
@@ -0,0 +1,126 @@
+//
+// 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 <uhd/usrp/tune_helper.hpp>
+#include <uhd/utils/algorithm.hpp>
+#include <uhd/usrp/subdev_props.hpp>
+#include <cmath>
+
+using namespace uhd;
+using namespace uhd::usrp;
+
+/***********************************************************************
+ * Tune Helper Function
+ **********************************************************************/
+static tune_result_t tune_xx_subdev_and_dxc(
+ bool is_tx,
+ wax::obj subdev, wax::obj dxc,
+ double target_freq, double lo_offset
+){
+ wax::obj subdev_freq_proxy = subdev[SUBDEV_PROP_FREQ];
+ bool subdev_quadrature = subdev[SUBDEV_PROP_QUADRATURE].as<bool>();
+ bool subdev_spectrum_inverted = subdev[SUBDEV_PROP_SPECTRUM_INVERTED].as<bool>();
+ wax::obj dxc_freq_proxy = dxc[std::string("freq")];
+ double dxc_sample_rate = dxc[std::string("if_rate")].as<double>();
+
+ // Ask the d'board to tune as closely as it can to target_freq+lo_offset
+ double target_inter_freq = target_freq + lo_offset;
+ subdev_freq_proxy = target_inter_freq;
+ double actual_inter_freq = subdev_freq_proxy.as<double>();
+
+ // Calculate the DDC setting that will downconvert the baseband from the
+ // daughterboard to our target frequency.
+ double delta_freq = target_freq - actual_inter_freq;
+ double delta_sign = std::signum(delta_freq);
+ delta_freq *= delta_sign;
+ delta_freq = std::fmod(delta_freq, dxc_sample_rate);
+ bool inverted = delta_freq > dxc_sample_rate/2.0;
+ double target_dxc_freq = inverted? (delta_freq - dxc_sample_rate) : (-delta_freq);
+ target_dxc_freq *= delta_sign;
+
+ // If the spectrum is inverted, and the daughterboard doesn't do
+ // quadrature downconversion, we can fix the inversion by flipping the
+ // sign of the dxc_freq... (This only happens using the basic_rx board)
+ if (subdev_spectrum_inverted){
+ inverted = not inverted;
+ }
+ if (inverted and not subdev_quadrature){
+ target_dxc_freq *= -1.0;
+ inverted = not inverted;
+ }
+ // down conversion versus up conversion, fight!
+ // your mother is ugly and your going down...
+ target_dxc_freq *= (is_tx)? -1.0 : +1.0;
+
+ dxc_freq_proxy = target_dxc_freq;
+ double actual_dxc_freq = dxc_freq_proxy.as<double>();
+
+ //return some kind of tune result tuple/struct
+ tune_result_t tune_result;
+ tune_result.target_inter_freq = target_inter_freq;
+ tune_result.actual_inter_freq = actual_inter_freq;
+ tune_result.target_dxc_freq = target_dxc_freq;
+ tune_result.actual_dxc_freq = actual_dxc_freq;
+ tune_result.spectrum_inverted = inverted;
+ return tune_result;
+}
+
+/***********************************************************************
+ * RX Tune
+ **********************************************************************/
+tune_result_t uhd::usrp::tune_rx_subdev_and_ddc(
+ wax::obj subdev, wax::obj ddc,
+ double target_freq, double lo_offset
+){
+ bool is_tx = false;
+ return tune_xx_subdev_and_dxc(is_tx, subdev, ddc, target_freq, lo_offset);
+}
+
+tune_result_t uhd::usrp::tune_rx_subdev_and_ddc(
+ wax::obj subdev, wax::obj ddc,
+ double target_freq
+){
+ double lo_offset = 0.0;
+ //if the local oscillator will be in the passband, use an offset
+ if (subdev[SUBDEV_PROP_LO_INTERFERES].as<bool>()){
+ lo_offset = 2.0*ddc[std::string("bb_rate")].as<double>();
+ }
+ return tune_rx_subdev_and_ddc(subdev, ddc, target_freq, lo_offset);
+}
+
+/***********************************************************************
+ * TX Tune
+ **********************************************************************/
+tune_result_t uhd::usrp::tune_tx_subdev_and_duc(
+ wax::obj subdev, wax::obj duc,
+ double target_freq, double lo_offset
+){
+ bool is_tx = true;
+ return tune_xx_subdev_and_dxc(is_tx, subdev, duc, target_freq, lo_offset);
+}
+
+tune_result_t uhd::usrp::tune_tx_subdev_and_duc(
+ wax::obj subdev, wax::obj duc,
+ double target_freq
+){
+ double lo_offset = 0.0;
+ //if the local oscillator will be in the passband, use an offset
+ if (subdev[SUBDEV_PROP_LO_INTERFERES].as<bool>()){
+ lo_offset = 2.0*duc[std::string("bb_rate")].as<double>();
+ }
+ return tune_tx_subdev_and_duc(subdev, duc, target_freq, lo_offset);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 18:43:02 +0000