AutoFeedEnable.hpp

Go to the documentation of this file.

/*
 * Copyright (C) Cross The Road Electronics.  All rights reserved.
 * License information can be found in CTRE_LICENSE.txt
 * For support and suggestions contact support@ctr-electronics.com or file
 * an issue tracker at https://github.com/CrossTheRoadElec/Phoenix-Releases
 */
#pragma once
 
#include "ctre/phoenix6/unmanaged/Unmanaged.hpp"
#include "frc/DriverStation.h"
#include "frc/Notifier.h"
#include "hal/simulation/MockHooks.h"
#include <mutex>
 
namespace ctre {
namespace phoenix6 {
namespace wpiutils {
 
class AutoFeedEnable {
public:
    static AutoFeedEnable &GetInstance()
    {
        static AutoFeedEnable *autoFeedEnable = new AutoFeedEnable{};
        return *autoFeedEnable;
    }
 
private:
    std::mutex _lck;
    frc::Notifier _enableNotifier;
    uint32_t _startCount = 0;
 
    AutoFeedEnable() :
        _enableNotifier{[] {
            if (frc::DriverStation::IsEnabled()) {
                ctre::phoenix::unmanaged::FeedEnable(100);
            }
        }}
    {}
 
public:
    /**
     * \brief Starts feeding the enable signal to CTRE actuators.
     */
    void Start()
    {
        std::lock_guard<std::mutex> lock{_lck};
        if (_startCount < UINT32_MAX) {
            if (_startCount++ == 0) {
                /* start if we were previously at 0 */
                _enableNotifier.StartPeriodic(20_ms);
            }
        }
    }
 
    /**
     * \brief Stops feeding the enable signal to CTRE actuators.
     * The enable signal will only be stopped when all actuators
     * have requested to stop the enable signal.
     */
    void Stop()
    {
        std::lock_guard<std::mutex> lock{_lck};
        if (_startCount > 0) {
            if (--_startCount == 0) {
                /* stop if we are now at 0 */
                _enableNotifier.Stop();
            }
        }
    }
};
 
}
}
}