mcp2515.h

#pragma once

#include "../spi/spi.h"
#include "avr/interrupt.h"
#include "../can/can.h"

#ifdef __AVR_ATmega162__

#define MCP2515_INT INT0_vect

#else

#define MCP2515_INT INT4_vect

#endif

ISR(MCP2515_INT);

class MCP2515: public CAN{

private:

    void RequestToSend();

    void WriteToRegister(uint8_t register_address, uint8_t byte);

    void ReadFromRegister(uint8_t register_address, uint8_t &byte);

    void Reset();

    void BitModify(uint8_t register_address, uint8_t mask, uint8_t data);

    void ReadStatus(uint8_t &byte);

    void LoadTxFrame(CanMessage &message);

    void RxStatus(uint8_t &byte);

    void ReadRxFrame(CanMessage &message);

    MCP2515(){};

    SPI::SPI *spi_driver;

    volatile bool clear_to_send = true;

public:

    static MCP2515& GetInstance(){
        static MCP2515 instance;
        return instance;
    }

    MCP2515(const MCP2515&) = delete;

    friend void MCP2515_INT();

    void SendMessage(CanMessage &message);

    void SetLoopback();

    void SetNormal();

    void Initialize(SPI::SPI *spi, uint16_t identifier);
};