portapack-mayhem/firmware/baseband/proc_btlerx.hpp
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/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2016 Furrtek
* Copyright (C) 2020 Shao
*
* This file is part of PortaPack.
*
* 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 2, 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef __PROC_BTLERX_H__
#define __PROC_BTLERX_H__
#include "baseband_processor.hpp"
#include "baseband_thread.hpp"
#include "rssi_thread.hpp"
#include "dsp_decimate.hpp"
#include "dsp_demodulate.hpp"
#include "audio_output.hpp"
#include "fifo.hpp"
#include "message.hpp"
class BTLERxProcessor : public BasebandProcessor {
public:
void execute(const buffer_c8_t& buffer) override;
void on_message(const Message* const message) override;
private:
static constexpr size_t baseband_fs = 4000000;
static constexpr size_t audio_fs = baseband_fs / 8 / 8 / 2;
BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive};
RSSIThread rssi_thread{NORMALPRIO + 10};
std::array<complex16_t, 512> dst{};
const buffer_c16_t dst_buffer{
dst.data(),
dst.size()};
std::array<complex16_t, 512> spectrum{};
const buffer_c16_t spectrum_buffer{
spectrum.data(),
spectrum.size()};
const buffer_s16_t work_audio_buffer{
(int16_t*)dst.data(),
sizeof(dst) / sizeof(int16_t)};
// Array size ok down to 375 bauds (24000 / 375)
std::array<int32_t, 64> delay_line{0};
std::array<int16_t, 1000> rb_buf{0};
/*dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0 { };
dsp::decimate::FIRC16xR16x32Decim8 decim_1 { };
dsp::decimate::FIRAndDecimateComplex channel_filter { };*/
dsp::decimate::FIRC8xR16x24FS4Decim4 decim_0{};
dsp::decimate::FIRC16xR16x16Decim2 decim_1{};
dsp::demodulate::FM demod{};
int rb_head{-1};
int32_t g_threshold{0};
uint8_t channel_number{38};
int skipSamples{1000};
int RB_SIZE{1000};
bool configured{false};
void configure(const BTLERxConfigureMessage& message);
AFSKDataMessage data_message{false, 0};
};
#endif /*__PROC_BTLERX_H__*/