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/* -*- c++ -*- */
/*
* Copyright 2011 Free Software Foundation, Inc.
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <fcd_source_c.h>
#include <fcd.h>
#include <fcdhidcmd.h> // needed for extended API
#include <gr_io_signature.h>
#include <gr_audio_source.h>
#include <gr_float_to_complex.h>
#include <gruel/attributes.h>
//#include <iostream>
//using namespace std;
/*
* Create a new instance of fcd_source_c and return
* a boost shared_ptr. This is effectively the public constructor.
*/
fcd_source_c_sptr fcd_make_source_c(const std::string device_name)
{
return gnuradio::get_initial_sptr(new fcd_source_c(device_name));
}
static const int MIN_IN = 0; /*!< Mininum number of input streams. */
static const int MAX_IN = 0; /*!< Maximum number of input streams. */
static const int MIN_OUT = 1; /*!< Minimum number of output streams. */
static const int MAX_OUT = 1; /*!< Maximum number of output streams. */
fcd_source_c::fcd_source_c(const std::string device_name)
: gr_hier_block2 ("fcd_source_c",
gr_make_io_signature (MIN_IN, MAX_IN, sizeof (gr_complex)),
gr_make_io_signature (MIN_OUT, MAX_OUT, sizeof (gr_complex))),
d_freq_corr(-120),
d_freq_req(0)
{
gr_float_to_complex_sptr f2c;
/* Audio source; sample rate fixed at 96kHz */
fcd = audio_make_source(96000, device_name, true);
/* block to convert stereo audio to a complex stream */
f2c = gr_make_float_to_complex(1);
connect(fcd, 0, f2c, 0);
connect(fcd, 1, f2c, 1);
connect(f2c, 0, self(), 0);
}
fcd_source_c::~fcd_source_c ()
{
}
// Set frequency with Hz resolution
void fcd_source_c::set_freq(int freq)
{
FCD_MODE_ENUM __GR_ATTR_UNUSED fme;
double f = (double)freq;
/* valid range 50 MHz - 2.0 GHz */
if ((freq < 50000000) || (freq > 2000000000)) {
return;
}
d_freq_req = freq;
f *= 1.0 + d_freq_corr/1000000.0;
fme = fcdAppSetFreq((int)f);
/* TODO: check fme */
}
// Set frequency with Hz resolution (type float)
void fcd_source_c::set_freq(float freq)
{
FCD_MODE_ENUM __GR_ATTR_UNUSED fme;
double f = (double)freq;
/* valid range 50 MHz - 2.0 GHz */
if ((freq < 50.0e6) || (freq > 2.0e9)) {
return;
}
d_freq_req = (int)freq;
f *= 1.0 + d_freq_corr/1000000.0;
fme = fcdAppSetFreq((int)f);
/* TODO: check fme */
}
// Set frequency with kHz resolution.
void fcd_source_c::set_freq_khz(int freq)
{
FCD_MODE_ENUM __GR_ATTR_UNUSED fme;
double f = freq*1000.0;
/* valid range 50 MHz - 2.0 GHz */
if ((freq < 50000) || (freq > 2000000)) {
return;
}
d_freq_req = freq*1000;
f *= 1.0 + d_freq_corr/1000000.0;
fme = fcdAppSetFreqkHz((int)(f/1000.0));
/* TODO: check fme */
}
// Set LNA gain
void fcd_source_c::set_lna_gain(float gain)
{
FCD_MODE_ENUM __GR_ATTR_UNUSED fme;
unsigned char g;
/* convert to nearest discrete value */
if (gain > 27.5) {
g = 14; // 30.0 dB
}
else if (gain > 22.5) {
g = 13; // 25.0 dB
}
else if (gain > 18.75) {
g = 12; // 20.0 dB
}
else if (gain > 16.25) {
g = 11; // 17.5 dB
}
else if (gain > 13.75) {
g = 10; // 15.0 dB
}
else if (gain > 11.25) {
g = 9; // 12.5 dB
}
else if (gain > 8.75) {
g = 8; // 10.0 dB
}
else if (gain > 6.25) {
g = 7; // 7.5 dB
}
else if (gain > 3.75) {
g = 6; // 5.0 dB
}
else if (gain > 1.25) {
g = 5; // 2.5 dB
}
else if (gain > -1.25) {
g = 4; // 0.0 dB
}
else if (gain > -3.75) {
g = 1; // -2.5 dB
}
else {
g = 0; // -5.0 dB
}
fme = fcdAppSetParam(FCD_CMD_APP_SET_LNA_GAIN, &g, 1);
/* TODO: check fme */
}
// Set new frequency correction
void fcd_source_c::set_freq_corr(int ppm)
{
d_freq_corr = ppm;
// re-tune with new correction value
set_freq(d_freq_req);
}
// Set DC offset correction.
void fcd_source_c::set_dc_corr(double _dci, double _dcq)
{
union {
unsigned char auc[4];
struct {
signed short dci; // equivalent of qint16 which should be 16 bit everywhere
signed short dcq;
};
} dcinfo;
if ((_dci < -1.0) || (_dci > 1.0) || (_dcq < -1.0) || (_dcq > 1.0))
return;
dcinfo.dci = static_cast<signed short>(_dci*32768.0);
dcinfo.dcq = static_cast<signed short>(_dcq*32768.0);
fcdAppSetParam(FCD_CMD_APP_SET_DC_CORR, dcinfo.auc, 4);
}
// Set IQ phase and gain balance.
void fcd_source_c::set_iq_corr(double _gain, double _phase)
{
union {
unsigned char auc[4];
struct {
signed short phase;
signed short gain;
};
} iqinfo;
if ((_gain < -1.0) || (_gain > 1.0) || (_phase < -1.0) || (_phase > 1.0))
return;
iqinfo.phase = static_cast<signed short>(_phase*32768.0);
iqinfo.gain = static_cast<signed short>(_gain*32768.0);
fcdAppSetParam(FCD_CMD_APP_SET_IQ_CORR, iqinfo.auc, 4);
}
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