PortAccessWdm.c File Reference

Functions for communicating with the parallel port driver Only use WDM functions. More...

#include <initguid.h>
#include <wdm.h>
#include "cbm_driver.h"

Go to the source code of this file.

Functions
NTSTATUS	ParPortSetMode (PDEVICE_EXTENSION Pdx)
	Set the operational mode of the parallel port.
NTSTATUS	ParPortUnsetMode (PDEVICE_EXTENSION Pdx)
	Unset the operational mode of the parallel port.

---

Detailed Description

Functions for communicating with the parallel port driver Only use WDM functions.

**************************************************************

Author:

Spiro Trikaliotis

Version:

Id

PortAccessWdm.c,v 1.2 2006/02/24 12:01:26 trikalio Exp

Definition in file PortAccessWdm.c.

---

Function Documentation

NTSTATUS ParPortSetMode (  PDEVICE_EXTENSION  Pdx  )

Set the operational mode of the parallel port. This function sets the operational mode of the parallel port. Parameters: Pdx  Pointer to a device extension which contains the DEVICE_OBJECT of the parallel port driver. This function has to be balanced with a corresponding ParPortUnsetMode() This function must be run at IRQL == PASSIVE_LEVEL. Definition at line 38 of file PortAccessWdm.c. References cbmiec_udelay(), FUNC_ENTER, ParPortSetModeNt4(), and ParPortSetModeWdm(). Referenced by cbm_lock_parport().

NTSTATUS ParPortUnsetMode (  PDEVICE_EXTENSION  Pdx  )

Unset the operational mode of the parallel port. This function unsets the operational mode of the parallel port. Parameters: Pdx  Pointer to a device extension which contains the DEVICE_OBJECT of the parallel port driver. This function mustn't be called without a prior call to ParPortSetMode() This function must be run at IRQL == PASSIVE_LEVEL. Definition at line 59 of file PortAccessWdm.c. References FUNC_ENTER, and ParPortUnsetModeWdm(). Referenced by cbm_lock_parport(), cbm_unlock_parport(), and ParPortSetModeWdm().

---