/usr/include/uhd/usrp/fe_connection.hpp is in libuhd-dev 3.10.3.0-2.
This file is owned by root:root, with mode 0o644.
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// Copyright 2016 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_UHD_USRP_FE_CONNECTION_HPP
#define INCLUDED_UHD_USRP_FE_CONNECTION_HPP
#include <uhd/config.hpp>
#include <boost/operators.hpp>
#include <string>
namespace uhd { namespace usrp {
class UHD_API fe_connection_t : boost::equality_comparable<fe_connection_t> {
public:
/** Sampling mode.
* Represents the sampling architecture for the front-end
*/
enum sampling_t {
QUADRATURE, /**< Complex sampling (Complex input, Complex output). */
HETERODYNE, /**< Heterodyne sampling (Real input, Complex output). Only one of the I and Q inputs is used. */
REAL /**< Real sampling (Real input, Real output). Only one of the I and Q inputs is used. */
};
/*!
* Create a frontend connection class from individual settings.
* \param sampling_mode can be { QUADRATURE, HETERODYNE, REAL }
* \param iq_swapped indicates if the IQ channels are swapped (after inverion and heterodyne correction)
* \param i_inverted indicates if the I channel is inverted (negated)
* \param q_inverted indicates if the Q channel is inverted (negated)
* \param if_freq the baseband sampling frequency.
*/
fe_connection_t(
sampling_t sampling_mode, bool iq_swapped,
bool i_inverted, bool q_inverted, double if_freq = 0.0
);
/*!
* Create a frontend connection class from a connection string
* The connection string can be:
* - in {I, Q}: Real mode sampling with no inversion.
* - in {Ib, Qb}: Real mode sampling with inversion.
* - in {IQ, QI}: Quadrature sampling with no inversion.
* - in {IbQb, QbIb}: Quadrature sampling with inversion.
* - in {II, QQ}: Heterodyne sampling with no inversion.
* - in {IbIb, QbQb}: Heterodyne sampling with inversion.
*
* \param conn_str the connection string.
* \param if_freq the baseband sampling frequency.
*/
fe_connection_t(const std::string& conn_str, double if_freq = 0.0);
/*!
* Accessor for sampling mode
*/
inline sampling_t get_sampling_mode() const {
return _sampling_mode;
}
/*!
* Accessor for IQ swap parameter
*/
inline bool is_iq_swapped() const {
return _iq_swapped;
}
/*!
* Accessor for I inversion parameter
*/
inline bool is_i_inverted() const {
return _i_inverted;
}
/*!
* Accessor for Q inversion parameter
*/
inline bool is_q_inverted() const {
return _q_inverted;
}
/*!
* Accessor for IF frequency
*/
inline double get_if_freq() const {
return _if_freq;
}
/*!
* Mutator for IF frequency
*/
inline void set_if_freq(double freq) {
_if_freq = freq;
}
private:
sampling_t _sampling_mode;
bool _iq_swapped;
bool _i_inverted;
bool _q_inverted;
double _if_freq;
};
/*!
* Comparator operator overloaded for fe_connection_t.
* The boost::equality_comparable provides the !=.
* \param lhs the fe_connection_t to the left of the operator
* \param rhs the fe_connection_t to the right of the operator
* \return true when the fe connections are equal
*/
UHD_API bool operator==(const fe_connection_t &lhs, const fe_connection_t &rhs);
}} //namespace
#endif /* INCLUDED_UHD_USRP_FE_CONNECTION_HPP */
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