button_classifier.h

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#pragma once
 
#include <cstdint>
 
namespace aiming
{
enum class ButtonEvent : uint8_t { None, Short, Long };
 
struct ButtonConfig {
    uint32_t debounce_ms = 50;
    uint32_t long_ms = 1500;
};
 
class ButtonClassifier
{
public:
    explicit ButtonClassifier(const ButtonConfig& config = ButtonConfig{}) : config_(config) {}
    ButtonEvent update(bool pressed_raw, uint32_t now_ms);
 
private:
    ButtonConfig config_;
    bool raw_ = false;
    uint32_t raw_since_ms_ = 0;
    bool stable_ = false;
    uint32_t pressed_at_ms_ = 0;
    bool long_fired_ = false;
};
} // namespace aiming