uart.h

国半usbn9604芯片开发办的源码

/*----------------------------------------------------------------------------
 *  Copyright (c) 2001 by National Semiconductor Corporation
 *  National Semiconductor Corporation
 *  2900 Semiconductor Drive
 *  Santa Clara, California 95051
 *
 *  All rights reserved
 *
 *<<<-------------------------------------------------------------------------
 * File Contents:
 *	Uart.cpp - Overlapped serial IO communication class.
 *
 *  Project: USB Demo Application
 *  Author : Yan Nosovitsky
 *  Date   : Dec 2001
 *----------------------------------------------------------------------->>>*/

#ifndef _UART_H_
#define _UART_H_


#include <windows.h>


class Uart 
{
private:

	HANDLE      uartHandle; // Device handle 

public:

	Uart();

	~Uart() { CloseUART(); }
			                        // For more definitions see <winbase.h>
	BOOL	OpenUART(LPCSTR lpszPortNum	= "com1",
			     DWORD  dwBaudRate  = CBR_19200, 
			     BYTE   byParity    = ODDPARITY,
			     BYTE   byStopBits  = ONESTOPBIT,
			     BYTE   byByteSize  = 8);

	void	CloseUART(VOID);
	
	bool	WriteData(BYTE* pdata, DWORD len);
	DWORD	ReadData(BYTE*  pdest, DWORD len, DWORD dwMaxWait = 10000);

private:


	BOOL	IsNT(VOID);

};


#endif // _UART_H_