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| DCB PortDCB;
// Initialize the DCBlength member.
PortDCB.DCBlength = sizeof (DCB);
// Change the DCB structure settings.
PortDCB.BaudRate = 9600; // Current baud
PortDCB.fBinary = TRUE; // Binary mode; no EOF check
PortDCB.fParity = TRUE; // Enable parity checking
PortDCB.fOutxCtsFlow = FALSE; // No CTS output flow control
PortDCB.fOutxDsrFlow = FALSE; // No DSR output flow control
PortDCB.fDtrControl = DTR_CONTROL_ENABLE;
// DTR flow control type
PortDCB.fDsrSensitivity = FALSE; // DSR sensitivity
PortDCB.fTXContinueOnXoff = TRUE; // XOFF continues Tx
PortDCB.fOutX = FALSE; // No XON/XOFF out flow control
PortDCB.fInX = FALSE; // No XON/XOFF in flow control
PortDCB.fErrorChar = FALSE; // Disable error replacement
PortDCB.fNull = FALSE; // Disable null stripping
PortDCB.fRtsControl = RTS_CONTROL_ENABLE;
// RTS flow control
PortDCB.fAbortOnError = FALSE; // Do not abort reads/writes on
// error
PortDCB.ByteSize = 8; // Number of bits/byte, 4-8
PortDCB.Parity = NOPARITY; // 0-4=no,odd,even,mark,space
PortDCB.StopBits = ONESTOPBIT; // 0,1,2 = 1, 1.5, 2
// Retrieve the time-out parameters for all read and write operations
// on the port.
COMMTIMEOUTS CommTimeouts;
//GetCommTimeouts (m_hPort1, &CommTimeouts);
// Change the COMMTIMEOUTS structure settings.
CommTimeouts.ReadIntervalTimeout = MAXDWORD;
CommTimeouts.ReadTotalTimeoutMultiplier = 0;
CommTimeouts.ReadTotalTimeoutConstant = 0;
CommTimeouts.WriteTotalTimeoutMultiplier = 10;
CommTimeouts.WriteTotalTimeoutConstant = 1000;
//COM Init
// Open the serial port.
m_hPort1 = CreateFile (TEXT("Com1:"), // Pointer to the name of the port
GENERIC_READ | GENERIC_WRITE, // Access (read-write) mode
0, // Share mode
NULL, // Pointer to the security attribute
OPEN_EXISTING,// How to open the serial port
0, // Port attributes
NULL); // Handle to port with attribute to copy
// Configure the port according to the specifications of the DCB structure.
if (!SetCommState (m_hPort1, &PortDCB))
{
// Could not configure the serial port.
MessageBox(TEXT("Unable to configure the serial port"), TEXT("Error"), MB_OK);
return FALSE;
}
// Set the time-out parameters for all read and write operations on the port.
if (!SetCommTimeouts (m_hPort1, &CommTimeouts))
{
// Could not set the time-out parameters.
MessageBox(TEXT("Unable to set the time-out parameters"), TEXT("Error"), MB_OK);
return FALSE;
} |
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