mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-14 12:08:40 +00:00
74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
|
/*
|
||
|
|
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
|
||
|
|
*
|
||
|
|
* 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 "portapack_shared_memory.hpp"
|
||
|
|
|
||
|
|
#include "i2s.hpp"
|
||
|
|
using namespace lpc43xx;
|
||
|
|
|
||
|
|
void TPMSProcessor::execute(buffer_c8_t buffer) {
|
||
|
|
/* 2.4576MHz, 2048 samples */
|
||
|
|
|
||
|
|
auto decimator_out = decimator.execute(buffer);
|
||
|
|
|
||
|
|
/* 76.8kHz, 64 samples */
|
||
|
|
feed_channel_stats(decimator_out);
|
||
|
|
/* No spectrum display while FSK decoding.
|
||
|
|
feed_channel_spectrum(
|
||
|
|
channel,
|
||
|
|
decimator_out.sampling_rate * channel_filter_taps.pass_frequency_normalized,
|
||
|
|
decimator_out.sampling_rate * channel_filter_taps.stop_frequency_normalized
|
||
|
|
);
|
||
|
|
*/
|
||
|
|
|
||
|
|
for(size_t i=0; i<decimator_out.count; i++) {
|
||
|
|
// TODO: No idea why implicit cast int16_t->float is not allowed.
|
||
|
|
const std::complex<float> sample {
|
||
|
|
static_cast<float>(decimator_out.p[i].real()),
|
||
|
|
static_cast<float>(decimator_out.p[i].imag())
|
||
|
|
};
|
||
|
|
if( mf.execute_once(sample) ) {
|
||
|
|
clock_recovery(mf.get_output());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
i2s::i2s0::tx_mute();
|
||
|
|
}
|
||
|
|
|
||
|
|
void TPMSProcessor::consume_symbol(
|
||
|
|
const float raw_symbol
|
||
|
|
) {
|
||
|
|
const uint_fast8_t sliced_symbol = (raw_symbol >= 0.0f) ? 1 : 0;
|
||
|
|
packet_builder.execute(sliced_symbol);
|
||
|
|
}
|
||
|
|
|
||
|
|
void TPMSProcessor::payload_handler(
|
||
|
|
const std::bitset<1024>& payload,
|
||
|
|
const size_t bits_received
|
||
|
|
) {
|
||
|
|
TPMSPacketMessage message;
|
||
|
|
message.packet.payload = payload;
|
||
|
|
message.packet.bits_received = bits_received;
|
||
|
|
shared_memory.application_queue.push(message);
|
||
|
|
}
|