I/o

hello...
anybody here know how to control the I/O, comm port etc. I have a gps receiver and i want to control it (extract data) by comm port.

anyone can help?

You could experiment with the following code to get you started. Check the error return codes on these calls.

Code:

DCB dcb;
char Buffer[BUFFER_SIZE];
int iNoOfBytesRead;

hComPortHandle = CreateFile("COM1", GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
ErrorCheck = GetCommState(hComPortHandle, &dcb);

dcb.BaudRate = 1200; // change to your requirments
dcb.ByteSize = 8;         //  ..
dcb.Parity   = 0;           //  ..
dcb.StopBits = 0;         //  ..

SetCommState(hComPortHandle, &dcb);

for(;;)
{
	ReadFile(hComPortHandle, &Buffer, BUFFER_SIZE, (unsigned long*)&iNoOfBytesRead, NULL); 
}

Try a board search too, this has been asked a few times before.