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/* -*- c++ -*- */
/*
* Copyright 2008,2009 Free Software Foundation, Inc.
*
* 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/>.
*/
/*
* Interface to daughterboard code
*/
#ifndef INCLUDED_DB_H
#define INCLUDED_DB_H
#include <usrp2_types.h>
struct db_base;
/* pointers to daughterboard structures */
extern struct db_base *tx_dboard;
extern struct db_base *rx_dboard;
//! Intermediate tuning information
struct tune_result
{
//! The RF frequency that corresponds to DC in the IF from the daughterboard
u2_fxpt_freq_t baseband_freq;
//! The DDC/DUC frequency used to down/up convert to/from the target frequency
u2_fxpt_freq_t dxc_freq;
//! Any differerence btwn target and actual (typically < 0.01 Hz)
u2_fxpt_freq_t residual_freq;
//! Is the complex baseband spectrum inverted
bool inverted;
};
/*!
* \brief One-time init at powerup
*
* Sets rx_dboard, tx_dboard and initializes daughterboards.
*/
void
db_init(void);
/*!
* \brief Set daughterboard LO offset frequency.
*
* \param[in] db is the daughterboard instance
* \param[in] offset is the amount to add to tuning requests
* \param[out] success or failure
*/
bool
db_set_lo_offset(struct db_base *db, u2_fxpt_freq_t offset);
/*!
* \brief Two stage tuning. Given target_freq, tune LO and DDC/DUC
*
* \param[in] db is the daughterboard instance
* \param[in] target_freq is the freq to translate the complex baseband to/from.
* \param[out] result provides details of the resulting configuration.
*
*/
bool
db_tune(struct db_base *db, u2_fxpt_freq_t target_freq, struct tune_result *result);
/*
* Set only the DDC frequency
*/
bool
db_set_ddc_freq(u2_fxpt_freq_t dxc_freq, u2_fxpt_freq_t *actual_dxc_freq);
/*
* Set only the DUC frequency
*/
bool
db_set_duc_freq(u2_fxpt_freq_t dxc_freq, u2_fxpt_freq_t *actual_dxc_freq);
/*!
* \brief Set gain
*/
bool
db_set_gain(struct db_base *db, u2_fxpt_gain_t gain);
#endif /* INCLUDED_DB_H */
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