COM Port Handle

[maverick786us]

What is the Win32 command for writing to a com port handle??

[Jim Mcpherson]

// Open Com Port
HANDLE	_hSerialComm = CreateFile("\\\\.\\COM1",
			GENERIC_READ|GENERIC_WRITE,
			0,
			0,
			OPEN_EXISTING,
			FILE_ATTRIBUTE_NORMAL |
			FILE_FLAG_OVERLAPPED,
			0);

// Read the Com Port
DWORD dwLength, cb;
OVERLAPPED _osSerial;


ReadFile(_hSerialComm,buffer,dwLength,&cb,&_osSerial);

// Write to Com Port

WriteFile(_hSerialComm, buffer, dwLength, &cb,&_osSerial);

There are examples on CodeGuru for Serial Port Communications.

[drewdaman]

createfile to get a handle
readfile to read from port
writefile to write to port

a very very very very very helpful tutorial:
http://www.daniweb.com/techtalkforum...ead.php?t=8020