www.pudn.com > FlashTool_src_v2.9.1006.zip > com_util.cpp

/***************************************************************************** 
*  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  
#include  
 
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; 
 } 
 
//------------------------------------------------------------------------------