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/*
* This file is part of the bladeRF project:
* http://www.github.com/nuand/bladeRF
*
* Copyright (C) 2014 Nuand LLC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef BLADERF1_CALIBRATION_H_
#define BLADERF1_CALIBRATION_H_
#include <stdint.h>
#include <libbladeRF.h>
struct dc_cal_entry {
unsigned int freq; /* Frequency (Hz) associated with this entry */
int16_t dc_i;
int16_t dc_q;
int16_t max_dc_i;
int16_t max_dc_q;
int16_t mid_dc_i;
int16_t mid_dc_q;
int16_t min_dc_i;
int16_t min_dc_q;
};
struct dc_cal_tbl {
uint32_t version;
uint32_t n_entries;
struct bladerf_lms_dc_cals reg_vals;
unsigned int curr_idx;
struct dc_cal_entry *entries; /* Sorted (increasing) by freq */
};
extern struct dc_cal_tbl rx_cal_test;
/**
* Get the index of an (approximate) match from the specific dc cal table
*
* @param[in] tbl Table to search
* @param[in] freq Desired frequency
*
* @return index into tbl->entries[].
*/
unsigned int dc_cal_tbl_lookup(const struct dc_cal_tbl *tbl, unsigned int freq);
/**
* Get the DC cal values associated with the specified frequencies. If the
* specified frequency is not in the table, the DC calibration values will
* be interpolated from surrounding entries.
*
* @param[in] tbl Table to search
* @param[in] freq Desired frequency
* @param[out] entry Found or interpolated DC calibration values
*/
void dc_cal_tbl_entry(const struct dc_cal_tbl *tbl,
unsigned int freq,
struct dc_cal_entry *entry);
/**
* Load a DC calibration table from the provided data
*
* @param[in] buf Packed table data
* @param[in] len Length of packed data, in bytes
*
* @return Loaded DC calibration table, or NULL on error
*/
struct dc_cal_tbl *dc_cal_tbl_load(const uint8_t *buf, size_t buf_len);
/**
* Load a DC calibration table from an image file
*
* @param[in] dev bladeRF device handle
* @param[out] tbl DC calibration Table
* @param[in] img_file Path to image file
*
* @return 0 on success, BLADERF_ERR_* value on failure
*/
int dc_cal_tbl_image_load(struct bladerf *dev,
struct dc_cal_tbl **tbl, const char *img_file);
/**
* Free a DC calibration table
*
* @param[inout] tbl Pointer to table to free
*
* The table pointer will be set to NULL after freeing it.
*/
void dc_cal_tbl_free(struct dc_cal_tbl **tbl);
#endif
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