Terminal_process_CT/snap7_communication/snap7_buf.h

#ifndef NNXX_TESTS_SNAP7_BUF_H
#define NNXX_TESTS_SNAP7_BUF_H

//Snap7协议的数据结构
class Snap7_buf
{
public:
	//通信模式
	enum Communication_mode
	{
	    NO_COMMUNICATION               		= 0,    //不通信
	    ONCE_COMMUNICATION               	= 1,    //一次通信
	    LOOP_COMMUNICATION					= 2,	//循环通信
	};
public:
	Snap7_buf();
	Snap7_buf(const Snap7_buf& other);
	Snap7_buf& operator =(const Snap7_buf& other);
	~Snap7_buf();
public://API functions
	Snap7_buf(int id, int start_index, int size, Communication_mode communication_mode = NO_COMMUNICATION);
	Snap7_buf(int id, int start_index, int size, void* p_buf_obverse, void* p_buf_reverse, Communication_mode communication_mode = NO_COMMUNICATION);
public://get or set member variable
	int get_id();
	int get_start_index();
	int get_size();
	void* get_buf_obverse();
	void* get_buf_reverse();
	Communication_mode get_communication_mode();
	void set_communication_mode(Communication_mode communication_mode);
protected://member functions

public://member variable

	int 		m_id;					//Snap7协议的数据块的编号
	int 		m_start_index;			//Snap7协议的数据起始位下标
	int			m_size;					//Snap7协议的数据字节大小
	void*		mp_buf_obverse;			//Snap7协议的正序数据指针, 和数据结构体进行强转, 内存由本类管理
	void*		mp_buf_reverse;			//Snap7协议的倒序数据指针, 用作s7通信, 内存由本类管理
	//注:s7的通信的数据必须要倒序之后才能进行通信,

	Communication_mode 		m_communication_mode;	//Snap7协议的通信模式
	//注:s7协议传输很慢, 防止相同的数据重复发送...


private:

};


#endif //NNXX_TESTS_SNAP7_BUF_H