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Started writing (copying...) AFSK RX

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Encoders: removed bit duration setting (frame duration is more useful)
This commit is contained in:
furrtek
2017-08-29 09:42:04 +01:00
parent cd6a1a7f3f
commit 42439d1885
23 changed files with 453 additions and 423 deletions
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54
firmware/baseband/proc_afskrx.hpp
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@@ -1,5 +1,6 @@
/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2016 Furrtek
*
* This file is part of PortaPack.
*
@@ -23,46 +24,59 @@
#define __PROC_AFSKRX_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 AFSKRXProcessor : public BasebandProcessor {
class AFSKRxProcessor : public BasebandProcessor {
public:
void execute(const buffer_c8_t& buffer) override;
void on_message(const Message* const message) override;
private:
std::array<complex16_t, 512> dst;
static constexpr size_t baseband_fs = 3072000;
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()
};
const buffer_f32_t work_audio_buffer {
(float*)dst.data(),
sizeof(dst) / sizeof(float)
std::array<float, 32> audio { };
const buffer_f32_t audio_buffer {
audio.data(),
audio.size()
};
dsp::decimate::FIRAndDecimateComplex channel_filter;
dsp::demodulate::FM demod; // 48000 5000
// Can't use FIFO class here since it only allows power-of-two sizes
std::array<int32_t, 24000/1200> delay_line { 0 };
dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0;
dsp::decimate::FIRC16xR16x32Decim8 decim_1;
dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0 { };
dsp::decimate::FIRC16xR16x32Decim8 decim_1 { };
dsp::decimate::FIRAndDecimateComplex channel_filter { };
dsp::demodulate::FM demod { };
AudioOutput audio_output;
uint16_t bit_timer = 0, freq_timer = 0;
uint16_t sc;
uint8_t audc, spur, sign, prev_sign, bit = 0;
int16_t aud[128];
void data_handler(const double data);
uint32_t bitrate { };
uint32_t sphase { 0 };
uint32_t sphase_delta { 0 };
uint32_t sphase_delta_half { 0 };
uint32_t sphase_delta_eighth { 0 };
uint32_t rx_data { 0 };
uint32_t bit_count { 0 };
bool configured { false };
void configure(const NBFMConfigureMessage& message);
void configure(const AFSKRxConfigureMessage& message);
AFSKDataMessage data_message { 0 };
};
#endif/*__PROC_TPMS_H__*/