mirror of
https://github.com/f4exb/sdrangel.git
synced 2025-10-26 02:20:26 -04:00
63 lines
2.7 KiB
C++
63 lines
2.7 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2018-2019 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
|
|
// //
|
|
// See: http://liquidsdr.org/blog/pll-howto/ //
|
|
// Fixed filter registers saturation //
|
|
// Added order for PSK locking. This brilliant idea actually comes from this //
|
|
// post: https://www.dsprelated.com/showthread/comp.dsp/36356-1.php //
|
|
// //
|
|
// 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 as 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 V3 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 SDRBASE_DSP_FREQLOCKCOMPLEX_H_
|
|
#define SDRBASE_DSP_FREQLOCKCOMPLEX_H_
|
|
|
|
#include "dsp/dsptypes.h"
|
|
#include "export.h"
|
|
|
|
/** General purpose Phase-locked loop using complex analytic signal input. */
|
|
class SDRBASE_API FreqLockComplex
|
|
{
|
|
public:
|
|
FreqLockComplex();
|
|
~FreqLockComplex();
|
|
|
|
void reset();
|
|
void setSampleRate(unsigned int sampleRate);
|
|
/** Feed PLL with a new signa sample */
|
|
void feed(float re, float im);
|
|
const std::complex<float>& getComplex() const { return m_y; }
|
|
float getReal() const { return m_yRe; }
|
|
float getImag() const { return m_yIm; }
|
|
float getFreq() const { return m_freq; }
|
|
|
|
private:
|
|
/** Normalize angle in radians into the [-pi,+pi] region */
|
|
static float normalizeAngle(float angle);
|
|
|
|
float m_a0;
|
|
float m_a1;
|
|
std::complex<float> m_y;
|
|
float m_yRe;
|
|
float m_yIm;
|
|
float m_freq;
|
|
float m_phi;
|
|
float m_phiX0;
|
|
float m_phiX1;
|
|
float m_y1;
|
|
};
|
|
|
|
|
|
#endif /* SDRBASE_DSP_FREQLOCKCOMPLEX_H_ */
|