[問題] RS-232讀取有問題

[Dforce (VF-17)]

遇到的問題：
讀裝置回傳的字原本應該是create

但是有些字會重複幾次像是creaaate之類的

開發平台：
Dev-C++

有問題的code：
#include <iostream>
#include <windows.h>
#include <conio.h>
using namespace std;
DWORD WINAPI ReadProc(LPVOID);
HANDLE      hCom;
OVERLAPPED osRead = {0};
int main(void)
{
    HANDLE       ReadThread;
    DWORD        dwError,dw;
    DCB          PortDCB;
    COMMTIMEOUTS TimeOuts;

    hCom=CreateFile("COM1",
                    GENERIC_READ | GENERIC_WRITE,
                    0,
                    NULL,
                    OPEN_EXISTING,
                    FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
                    NULL);

    if(hCom == INVALID_HANDLE_VALUE)
    {
        dwError=GetLastError( );
        cout << "Get Error: " << dwError;
        cout << "\n      Create I/O file failed\n";
        return 0;
    }

    if ( !SetupComm( hCom, 1024, 128 ) )
    {
        dwError=GetLastError( );
        cout << "Get Error: " << dwError;
        cout << "\n      Set Comm buffer failed\n";
        return 0;
    }

    TimeOuts.ReadIntervalTimeout=MAXDWORD;
    TimeOuts.ReadTotalTimeoutMultiplier=0;
    TimeOuts.ReadTotalTimeoutConstant=0;
    TimeOuts.WriteTotalTimeoutMultiplier=10;
    TimeOuts.WriteTotalTimeoutConstant=1000;

    if( !SetCommTimeouts(hCom, &TimeOuts) )
    {
        dwError = GetLastError( );
        cout << "Get Error: " << dwError;
        cout << "\n      Set Timeout failed\n";
        return 0;
    }

    GetCommState(hCom, &PortDCB);

    PortDCB.BaudRate = CBR_115200;
    PortDCB.ByteSize = 8;
    PortDCB.Parity = NOPARITY;
    PortDCB.StopBits = ONESTOPBIT;

    if( !SetCommState(hCom, &PortDCB) )
    {
        dwError = GetLastError( );
        cout << "Get Error: " << dwError;
        cout << "\n      Set DCB failed\n";
        return 0;
    }

    if ( !SetCommMask(hCom, EV_RXCHAR) )
    {
        dwError = GetLastError( );
        cout << "Get Error: " << dwError;
        cout << "\n      SetCommMask failed\n";
        return 0;
    }
    osRead.hEvent = CreateEvent(NULL, true, false, NULL);
    if ( osRead.hEvent == NULL )
    {
        dwError = GetLastError( );
        cout << "Get Error: " << dwError;
        cout << "\n      Create Event failed\n";
        return 0;
    }

    ReadThread = CreateThread(NULL, 0, ReadProc, NULL, 0, &dw);
    while( getch() != VK_ESCAPE )
    {
        fflush(stdin);
    }
    CloseHandle(ReadThread);
    CloseHandle(hCom);
    return 0;
}

DWORD WINAPI ReadProc(LPVOID lpParam)
{
    char      Byte;
    DWORD     CommEvent, dwByte, dwE;

    while(1)
    {
        if( WaitCommEvent(hCom, &CommEvent, NULL) )
        {
            do
            {
                if ( ReadFile(hCom, &Byte, 1, &dwByte, &osRead) )
                    cout << Byte;
            } while (dwByte);
        }
    }
    return 0;
}

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