problem of using infrared port!

[Guest candyfeng]

I have writen a program running on smartphone to make use of the infrared port. I opened COM3 successfully (the IrCOMM is 3), but when I called WriteFile, the program was stalled, and seemed to be waiting for timeout, but it didn't return and I have to reset the phone. I don't know why since the same method works well on my Pocket PC. My smartphone is MPx220. Please help me, thanks!

[Guest luti02]

Hi

Iam very interestic with irDA transmition, i have an MPX200 and i like make same electronic application and use irDA data transmition to sync. data.

it's posibel to send me your programe to check it, and help you to analyse probleme!.

[Guest candyfeng]

I am using eVC++4.0, and the codes are below.

////Find the IrCOMM port number

void CCom::GetIrComm(short &sPort)

{

DWORD dwSize,dwType,dwData;

HKEY hKey;

if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,TEXT ("Drivers\\builtIn\\IrCOMM"),0,0,&hKey)==ERROR_SUCCESS)

{

dwSize=sizeof(dwData);

if (RegQueryValueEx(hKey,TEXT("Index"),0,&dwType,(PBYTE)&dwData,&dwSize)==ERROR_SUCCESS)

if(dwData<10)

{

sPort = dwData;

}

RegCloseKey(hKey);

}

}

The port number I got is 3. Then I Open COM3

BOOL CIrdaPort::Open(UINT uiPort)

{

ASSERT(uiPort > 0 && uiPort <= 255);

unsigned short strPort[255];

_stprintf(strPort,_T("COM%d:"), uiPort);

m_hPort = CreateFile((LPCTSTR) strPort, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);

if (m_hPort == INVALID_HANDLE_VALUE)

{

return FALSE;

}

// Set the size of the input and output buffer

VERIFY(SetupComm(m_hPort, 2048, 2048));

// Terminates all outstanding read and write operations and clear the buffers

VERIFY(PurgeComm(m_hPort, PURGE_TXABORT | PURGE_RXABORT | PURGE_TXCLEAR | PURGE_RXCLEAR));

// Reinitializes all IRDA port settings

DCB dcb;

dcb.DCBlength = sizeof(DCB);

VERIFY(GetCommState(m_hPort, &dcb));

dcb.BaudRate = 19200;

dcb.fBinary = TRUE;

dcb.fParity = TRUE;

dcb.fOutxCtsFlow = FALSE;

dcb.fOutxDsrFlow = FALSE;

dcb.fDtrControl = DTR_CONTROL_ENABLE;

dcb.fDsrSensitivity = FALSE;

dcb.fTXContinueOnXoff = TRUE;

dcb.fOutX = FALSE;

dcb.fInX = FALSE;

dcb.fErrorChar = FALSE;

dcb.fNull = FALSE;

dcb.fRtsControl = RTS_CONTROL_ENABLE;

dcb.fAbortonerror = FALSE;

dcb.ByteSize = 8;

dcb.Parity = NOPARITY;

dcb.StopBits = ONESTOPBIT;

VERIFY(SetCommState(m_hPort, &dcb));

// Set the timeouts for all read and write operations

COMMTIMEOUTS timeouts;

VERIFY(GetCommTimeouts(m_hPort, &timeouts));

timeouts.ReadIntervalTimeout = 500;

timeouts.ReadTotalTimeoutMultiplier = 5;

timeouts.ReadTotalTimeoutConstant = 0;

timeouts.WriteTotalTimeoutMultiplier = 100;

timeouts.WriteTotalTimeoutConstant = 0;

VERIFY(SetCommTimeouts(m_hPort, &timeouts));

return TRUE;

}

Then I send the data.

//////Send data

DWORD CIrdaPort::Write(BYTE *pData, DWORD dwCount) const

{

DWORD dwBytesWritten = 0;

BOOL bR = WriteFile(m_hPort, pData, dwCount, &dwBytesWritten, NULL);

return dwBytesWritten;

}

And the program blocked here.

[Guest Gladers]

Has anyone compiled this as a dll and make it a simple API? ;)