com_util.cpp

MTK bin下载工具全部源代码（c++）

/*****************************************************************************
*  Copyright Statement:
*  --------------------
*  This software is protected by Copyright and the information contained
*  herein is confidential. The software may not be copied and the information
*  contained herein may not be used or disclosed except with the written
*  permission of MediaTek Inc. (C) 2002
*
*****************************************************************************/

/*******************************************************************************
* Filename:
* ---------
*  com_util.cpp
*
* Project:
* --------
*   Flash tool
*
* Description:
* ------------
*   Flash tool utility
*
* Author:
* -------
*  FZ Hsu (mtk00303)
*
*==============================================================================
*           HISTORY
* Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*------------------------------------------------------------------------------
* $Revision:   1.1  $
* $Modtime:   Nov 20 2002 16:38:02  $
* $Log:   //mtkvs01/vmdata/flash_tool/archives/com_util.cpp-arc  $
 * 
 *    Rev 1.1   Nov 20 2002 19:52:58   mtk00303
 * update for reference phone
 * 
 *    Rev 1.0   Jul 26 2002 11:53:18   admin
 * Initial revision.
*
*------------------------------------------------------------------------------
* Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*==============================================================================
*******************************************************************************/
//---------------------------------------------------------------------------



#include <windows.h>
#include <stdio.h>

DCB dcb;
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
  bool open_com_port( HANDLE &hCOM_HANDLE, int i_com_port, int i_baud_rate)
  {
        if ( hCOM_HANDLE != NULL && hCOM_HANDLE != INVALID_HANDLE_VALUE )
        {
                PurgeComm( hCOM_HANDLE, PURGE_TXABORT);
                PurgeComm( hCOM_HANDLE, PURGE_RXABORT);
                PurgeComm( hCOM_HANDLE, PURGE_TXCLEAR);
                PurgeComm( hCOM_HANDLE, PURGE_RXCLEAR);
                CloseHandle( hCOM_HANDLE);
                hCOM_HANDLE = NULL;
        }

	char c_com[50];
        ::sprintf(c_com, "\\\\.\\COM%d", i_com_port);

	hCOM_HANDLE = ::CreateFile( c_com,
			     GENERIC_READ|GENERIC_WRITE,
			     0,
			     NULL,
			     OPEN_EXISTING,
			     FILE_ATTRIBUTE_NORMAL,
			     NULL);

	if( hCOM_HANDLE==INVALID_HANDLE_VALUE )
        {
//            ShowMessage(" COM" + IntToStr( i_com_port) + " is used by other program.");
            hCOM_HANDLE = NULL;
	    return false;
	}

	if( ::SetupComm(hCOM_HANDLE, 8192, 8192)==FALSE )
		return false;

	if( ::PurgeComm(hCOM_HANDLE, PURGE_TXABORT|PURGE_RXABORT|PURGE_TXCLEAR|PURGE_RXCLEAR)==FALSE )
		return false;

        COMMTIMEOUTS TimeOut;
        TimeOut.ReadIntervalTimeout = 0;
        TimeOut.ReadTotalTimeoutMultiplier = 1;
        TimeOut.ReadTotalTimeoutConstant = 700;
        TimeOut.WriteTotalTimeoutMultiplier = 1;
        TimeOut.WriteTotalTimeoutConstant = 700;

        SetCommTimeouts(hCOM_HANDLE, &TimeOut);

	char c_dcb[50];
        ::sprintf( c_dcb, "%d,n,8,1", i_baud_rate);

        BuildCommDCB( c_dcb, &dcb );

        SetCommState( hCOM_HANDLE, &dcb );
        return true;
 }
//------------------------------------------------------------------------------

  bool set_com_port( HANDLE &hCOM_HANDLE, int i_baud_rate)
  {
	if( hCOM_HANDLE==INVALID_HANDLE_VALUE )
        {
            hCOM_HANDLE = NULL;
	    return false;
	}

	if( hCOM_HANDLE==NULL )
        {
	    return false;
	}

        if ( PurgeComm( hCOM_HANDLE, PURGE_TXABORT)==0 || PurgeComm( hCOM_HANDLE, PURGE_RXABORT)==0 ||
             PurgeComm( hCOM_HANDLE, PURGE_TXCLEAR)==0 || PurgeComm( hCOM_HANDLE, PURGE_RXCLEAR)==0 )
        {
	    return false;
        }

	if( ::SetupComm(hCOM_HANDLE, 8192, 8192)==FALSE )
		return false;

	if( ::PurgeComm(hCOM_HANDLE, PURGE_TXABORT|PURGE_RXABORT|PURGE_TXCLEAR|PURGE_RXCLEAR)==FALSE )
		return false;

        COMMTIMEOUTS TimeOut;
        TimeOut.ReadIntervalTimeout = 0;
        TimeOut.ReadTotalTimeoutMultiplier = 1;
        TimeOut.ReadTotalTimeoutConstant = 700;
        TimeOut.WriteTotalTimeoutMultiplier = 1;
        TimeOut.WriteTotalTimeoutConstant = 700;

        SetCommTimeouts( hCOM_HANDLE, &TimeOut);

	char c_dcb[50];
        ::sprintf( c_dcb, "%d,n,8,1", i_baud_rate);

        BuildCommDCB( c_dcb, &dcb );

        SetCommState( hCOM_HANDLE, &dcb );
        return true;
 }


//------------------------------------------------------------------------------
 bool close_com_port( HANDLE &hCOM_HANDLE  )
 {
        if ( hCOM_HANDLE != NULL && hCOM_HANDLE != INVALID_HANDLE_VALUE )
        {
                PurgeComm( hCOM_HANDLE, PURGE_TXABORT);
                PurgeComm( hCOM_HANDLE, PURGE_RXABORT);
                if (! CloseHandle( hCOM_HANDLE))
                  return false;

                hCOM_HANDLE = NULL;
        }
        if ( hCOM_HANDLE == INVALID_HANDLE_VALUE )
        {
           hCOM_HANDLE == NULL;
        }

        return true;
 }

//------------------------------------------------------------------------------