rpi_gpio.hpp

#pragma once

#include <vector>
#include <thread>
#include <atomic>
#include <mutex>

#define GPIO_COUNT 28

#define GPIO0 0
#define GPIO1 1
#define GPIO2 2
#define GPIO3 3
#define GPIO4 4
#define GPIO5 5
#define GPIO6 6
#define GPIO7 7
#define GPIO8 8
#define GPIO9 9
#define GPIO10 10
#define GPIO11 11
#define GPIO12 12
#define GPIO13 13
#define GPIO14 14
#define GPIO15 15
#define GPIO16 16
#define GPIO17 17
#define GPIO18 18
#define GPIO19 19
#define GPIO20 20
#define GPIO21 21
#define GPIO22 22
#define GPIO23 23
#define GPIO24 24
#define GPIO25 25
#define GPIO26 26
#define GPIO27 27

namespace GPIO {
    struct Event {
        unsigned long long time;
        unsigned number;
        bool high;
    };

    enum class Mode { In, Out };

    enum class Resistor { PullUp, PullDown, Off };

    class Controller
    {
        public:
            virtual ~Controller();
            Controller(const Controller &) = delete;
            Controller(Controller &&) = delete;
            Controller &operator=(const Controller &) = delete;
            static Controller &GetInstance();
            void SetMode(unsigned number, Mode mode);
            void SetResistor(unsigned number, Resistor resistor);
            void Set(unsigned number, bool active);
            bool Get(unsigned number);
            std::vector<Event> GetEvents();
            void SetSchedule(std::vector<Event> events, unsigned long long interval = 0);
            void Reset();
        private:
            Controller();
            static void EventThread(Controller *instance);
            std::thread eventThread;
            std::atomic_bool enabled, reset;
            std::vector<Event> events;
            std::mutex eventsAccess;
            std::atomic<std::pair<std::vector<Event>, unsigned long long> *> schedule;
            void *io;
    };
}