Re: Setting low level flag for Serial Port in Java

From:

Knute Johnson <nospam@rabbitbrush.frazmtn.com>

Newsgroups:

comp.lang.java.programmer

Date:

Mon, 16 Jul 2007 15:30:36 -0700

Message-ID:

<hkSmi.16377$EZ1.13055@newsfe18.lga>

Homer wrote:

Hi All,

How can I set a low level flag for Serial Port. Using C++ I can say:

if((m_hComaptm=::CreateFile(/*(LPCTSTR)port,*/"COM1", GENERIC_READ|
GENERIC_WRITE, 0, NULL,
          OPEN_EXISTING, FILE_FLAG_OVERLAPPED,
NULL))==INVALID_HANDLE_VALUE)
    {
        IsError();// to format system error
        printf("Failed to access COM1...\n");
        return NULL;
    }
    ::SetupComm(m_hComaptm, 1024,1024);
    DCB m_dcb;
    ::GetCommState(m_hComaptm,&m_dcb);
// m_dcb.BaudRate = CBR_9600;
// m_dcb.fBinary = 1;
// m_dcb.fParity = 0;
// m_dcb.fOutxCtsFlow = 0;
// m_dcb.fOutxDsrFlow = 0;
// m_dcb.fDtrControl = DTR_CONTROL_ENABLE;
// m_dcb.fDsrSensitivity = 0;

I am using Java Win32Com library and trying to set fDsrSensitivity to
Zero in Java but there is no such a function. any idea?

Thanks in advance,

Homer

What does it do? I've never seen that before. It is not a function of
the UART, is it a Windows driver function?

--

Knute Johnson
email s/nospam/knute/