HackRF-Treasure-Chest/Software/portapack-mayhem/firmware/application/temperature_logger.cpp
2022-09-22 09:26:57 -07:00

70 lines
2.0 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 "temperature_logger.hpp"
#include "radio.hpp"
#include <algorithm>
void TemperatureLogger::second_tick() {
sample_phase++;
if( sample_phase >= sample_interval ) {
push_sample(read_sample());
}
}
size_t TemperatureLogger::size() const {
return std::min(capacity(), samples_count);
}
size_t TemperatureLogger::capacity() const {
return samples.size();
}
std::vector<TemperatureLogger::sample_t> TemperatureLogger::history() const {
std::vector<sample_t> result;
const auto n = size();
result.resize(n);
// Copy the last N samples from the buffer, since new samples are added at the end.
std::copy(samples.cend() - n, samples.cend(), result.data());
return result;
}
TemperatureLogger::sample_t TemperatureLogger::read_sample() {
// MAX2837 does not return a valid temperature if in "shutdown" mode.
return radio::debug::second_if::temp_sense();
}
void TemperatureLogger::push_sample(const TemperatureLogger::sample_t sample) {
// Started out building a pseudo-FIFO, then got lazy.
// Shift samples: samples[1:] -> samples[0:-1]
// New sample goes into samples[-1]
std::copy(samples.cbegin() + 1, samples.cend(), samples.begin());
samples.back() = sample;
samples_count++;
sample_phase = 0;
}