clamp_safety/plc/snap7_buf.h

#ifndef NNXX_TESTS_SNAP7_BUF_H
#define NNXX_TESTS_SNAP7_BUF_H

#include <string>
#include <map>
#include <vector>
#include <iostream>

//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
	};

	//变量信息
	struct Variable_information
	{
	    std::string		m_variable_name;		//变量名称
	    std::string		m_variable_type;		//变量类型, 使用 typeid(a).name() 获取
	    int 			m_variable_index;		//变量下标, 偏移量
	    int 			m_variable_size;		//变量类型大小
		int				m_variable_count;		//变量个数
	};
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,
			  std::vector<Snap7_buf::Variable_information>& variable_information_vector,Communication_mode communication_mode = NO_COMMUNICATION);
	Snap7_buf(int id, int start_index, int size, void* p_buf_obverse, void* p_buf_reverse,
			  std::vector<Snap7_buf::Variable_information>& variable_information_vector, Communication_mode communication_mode = NO_COMMUNICATION);

	void init(int id, int start_index, int size,
			  std::vector<Snap7_buf::Variable_information>& variable_information_vector,Communication_mode communication_mode = NO_COMMUNICATION);
	void init(int id, int start_index, int size, void* p_buf_obverse, void* p_buf_reverse,
		 std::vector<Snap7_buf::Variable_information>& variable_information_vector, Communication_mode communication_mode = NO_COMMUNICATION);


	//正序数据 转为 倒序数据
	void obverse_to_reverse();
	//倒序数据 转为 正序数据
	void reverse_to_obverse();
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,

//	std::map<std::string, Variable_information>			m_variable_information_map;
	std::vector<Variable_information>		m_variable_information_vector;

	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