gpio_input_signal.h

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// Copyright (c) Space-ng, inc. All rights reserved.
 
#pragma once
 
#include "sol3/core/event_signal.h"
#include "sol3/gpio/gpio.h"
#include "sol3/gpio/gpio_input_listener.h"
 
#include <spdlog/spdlog.h>
 
#include <stdexcept>
 
namespace sol3::gpio {
 
class GpioInputSignal {
 public:
  explicit GpioInputSignal(GpioInputPin pin)
      : edge_(pin.getOptions().edge),
        listener_(
            std::move(pin), [this](sol3::gpio::GpioInputEvent const& event) {
              if (event.edge == edge_) {
                signal_.notify();
              }
            }) {
    if (edge_ == GpioEdge::BOTH) {
      throw std::invalid_argument(
          "Cannot signal input event on GpioEdge::BOTH.");
    }
  }
 
  core::EventSignal const& signal() const { return signal_; }
 
  void start() { listener_.start(); }
 
  void stop() { listener_.stop(); }
 
 private:
  GpioEdge edge_;
  core::EventSignal signal_;
  GpioInputListener listener_;
};
 
}  // namespace sol3::gpio