communication.h

RS232串口通讯,主要用来设置芯片中的数据.

#if !defined(_COMM_ACCESS_FUNCTIONS_AND_DATA)
#define _COMM_ACCESS_FUNCTIONS_AND_DATA

#if _MSC_VER > 1000
#pragma once
#endif							// _MSC_VER 
								// > 
								// 1000

#define PACKLEN		32	/*
						 * 帧最大长度
						 *  
						 */

class           CComStatus
{
 public:
   HANDLE m_hCom;
   BYTE            m_bComId;

   BYTE            m_bByteSize;	// 数据位
   BYTE            m_bStopBits;	// 停止位
   BYTE            m_bParity;	// 奇偶效验是否允许
   DWORD           m_dwBaudRate;	// 波特率
   DWORD           m_fBinary;	// 指定是否允许二进制模式

   OVERLAPPED      m_rdos;
   OVERLAPPED      m_wtos;
   // functions
                   CComStatus();
                   CComStatus(BYTE bComId, BYTE bByteSize, BYTE bStopBits,
							  BYTE bParity, DWORD dwBaudRate, DWORD fBinary);
   BOOL            OpenConnection();
   BOOL            CloseConnection();
   BOOL            SetupConnection();

};								// InitCommParam 

								// = 
								// {8,ONESTOPBIT,NOPARITY,1200,1,EVENTCHAR,1};
/******************************************************
GLOBAL FUNCTIONS
******************************************************/
BOOL            WriteCommBlock(CComStatus & comDev, LPSTR lpByte,   DWORD dwBytesToWrite);
int             ReadCommBlock(CComStatus & comDev, LPSTR lpszBlock,	  int nMaxLength);
#endif