/*********************************************************************/
/* | BOOL OpenCommunications(int ComPort, int ComBaud) | */ | ||
/* | Description | : This function is to Open the communication port | */ | |
/* | and set the port settings |
| */ | |
/* | Inputs : | int - ComPort | entered as a command line argument | */ |
/* |
| int - ComBaud | The Baud rate for Communication | */ |
/* | Returns: | SUCCESS - If the Communication link was established*/ | ||
/* |
| FAIL - IF there was an error opening the COM Port | */ | |
/*********************************************************************/ BOOL OpenCommunications(int ComPort, int ComBaud)
{ |
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|
|
DCB | CommSettings; | // Structure with COM Port settings | |
LPCTSTR ComPortNumber; | // Pointer to the | COM port number | |
BOOL PortReady; | // Return val after setting the COM Port | ||
COMMTIMEOUTS timeout; | // Structure with | Time out values | |
switch (ComPort)
{
case ‘1’:
ComPortNumber = “COM1"; break;
case ‘2’:
ComPortNumber = “COM2"; break;
case ‘3’:
ComPortNumber = “COM3"; break;
case ‘4’:
ComPortNumber = “COM4"; break;
default:
CloseHandle(ComHandle);
fclose(fp);
exit(0);
break;
}
/* Creating a File to Open a COM Port*/ ComHandle = CreateFile( ComPortNumber,
GENERIC_READ GENERIC_WRITE, 0, // exclusive access NULL, // no security
Site Master PM | 113 |
