1da934ba3c
Renames the executable to lowercase and updates the corresponding dependency links in CMakeLists.txt. Introduces a version file to manage the project's version.
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
#include "Heart.h"
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#include <gpiod.hpp>
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namespace cardio
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{
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Heart::Heart(const char* chipName, const unsigned int lineOffset)
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: _lastBeat(std::chrono::steady_clock::now()),
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chip_(std::string("/dev/") + chipName),
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isOn_(false),
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request_(get_line_request(chip_, lineOffset))
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{
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}
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void Heart::beat()
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{
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const auto now = std::chrono::steady_clock::now();
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if (const auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>
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(now - _lastBeat); elapsed.count() >= 500)
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{
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isOn_ = !isOn_;
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const auto val = isOn_ ? gpiod::line::value::ACTIVE : gpiod::line::value::INACTIVE;
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request_.set_value(DEFAULT_HEART_PIN, val);
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_lastBeat = now;
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}
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}
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void Heart::stop()
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{
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isOn_ = false;
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request_.set_value(DEFAULT_HEART_PIN, gpiod::line::value::INACTIVE);
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}
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gpiod::line_request Heart::get_line_request(gpiod::chip& chip, const unsigned int lineOffset)
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{
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const auto settings = gpiod::line_settings()
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.set_direction(gpiod::line::direction::OUTPUT);
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return chip.prepare_request()
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.add_line_settings(lineOffset, settings)
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.do_request();
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}
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}
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