portapack-mayhem/firmware/baseband/proc_tpms.cpp
Mark Thompson 746bf1c15f
Beep-on-packet support in TPMS app ()
* Beep-on-packet support in TPMS app
* audio::output::stop when exiting
2024-03-29 21:28:27 +01:00

79 lines
2.6 KiB
C++

/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2023 Mark Thompson
*
* 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.
*/
#include "proc_tpms.hpp"
#include "audio_dma.hpp"
#include "dsp_fir_taps.hpp"
#include "event_m4.hpp"
TPMSProcessor::TPMSProcessor() {
decim_0.configure(taps_200k_decim_0.taps);
decim_1.configure(taps_200k_decim_1.taps);
baseband_thread.start();
}
void TPMSProcessor::execute(const buffer_c8_t& buffer) {
/* 2.4576MHz, 2048 samples */
const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
const auto decimator_out = decim_1.execute(decim_0_out, dst_buffer);
/* 307.2kHz, 256 samples */
feed_channel_stats(decimator_out);
for (size_t i = 0; i < decimator_out.count; i++) {
if (mf_38k4_1t_19k2.execute_once(decimator_out.p[i])) {
clock_recovery_fsk_19k2(mf_38k4_1t_19k2.get_output());
}
}
for (size_t i = 0; i < decimator_out.count; i += channel_decimation) {
const auto sliced = ook_slicer_5sps(decimator_out.p[i]);
slicer_history = (slicer_history << 1) | sliced;
clock_recovery_ook_8k192(slicer_history, [this](const bool symbol) {
this->packet_builder_ook_8k192_schrader.execute(symbol);
});
clock_recovery_ook_8k4(slicer_history, [this](const bool symbol) {
this->packet_builder_ook_8k4_schrader.execute(symbol);
});
}
}
void TPMSProcessor::on_message(const Message* const msg) {
if (msg->id == Message::ID::AudioBeep)
on_beep_message(*reinterpret_cast<const AudioBeepMessage*>(msg));
}
void TPMSProcessor::on_beep_message(const AudioBeepMessage& message) {
audio::dma::beep_start(message.freq, message.sample_rate, message.duration_ms);
}
int main() {
audio::dma::init_audio_out();
EventDispatcher event_dispatcher{std::make_unique<TPMSProcessor>()};
event_dispatcher.run();
return 0;
}