PortAccessNt4.c File Reference

Functions for communicating with the parallel port driver, NT4 version. More...

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

Go to the source code of this file.

Defines
#define	AdvancedEPPTests   1
Enumerations
enum	lptMode {   lptN_A = 0, lptSPP = 1, lptPS2 = 2, lptEPP = 3,   lptECP = 4, lptEPPc = 5 }
enum	ecpMode {   ecpNOECR = 0, ecpSTNDRD = 1, ecpBYTE = 2, ecpSTDFIFO = 3,   ecpECPFIFO = 4, ecpEPP = 5, ecpRESVRD = 6, ecpFIFOTST = 7,   ecpCONFIG = 8 }
Functions
enum lptMode	AdvEPP (PUCHAR port)
NTSTATUS	ParPortSetModeNt4 (PDEVICE_EXTENSION Pdx)
	Set the operational mode of the parallel port, NT4 version.
NTSTATUS	ParPortUnsetModeNt4 (PDEVICE_EXTENSION Pdx)
	Unset the operational mode of the parallel port, NT4 version.
VOID	cbmiec_udelay (IN ULONG howlong)
	Set the operational mode of the parallel port.
NTSTATUS	ParPortSetMode (PDEVICE_EXTENSION Pdx)
NTSTATUS	ParPortUnsetMode (PDEVICE_EXTENSION Pdx)
	Unset the operational mode of the parallel port.

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Detailed Description

Functions for communicating with the parallel port driver, NT4 version.

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Author:

Spiro Trikaliotis

Version:

Id

PortAccessNt4.c,v 1.4 2006/02/24 12:01:26 trikalio Exp

Definition in file PortAccessNt4.c.

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Function Documentation

VOID cbmiec_udelay (  IN ULONG  Howlong  )

Set the operational mode of the parallel port. This function waits for a timeout. Waiting means that we want to have an exact timing, so don't give away the processor. Parameters: Howlong  How long to wait (in us) Definition at line 67 of file libiec/util.c. References FUNC_ENTER, and FUNC_LEAVE.

NTSTATUS ParPortSetModeNt4 (  PDEVICE_EXTENSION  Pdx  )

Set the operational mode of the parallel port, NT4 version. 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 ParPortUnsetModeNt4() This function must be run at IRQL == PASSIVE_LEVEL. Definition at line 433 of file PortAccessNt4.c. References DBG_PRINT, FUNC_ENTER, and _DEVICE_EXTENSION::ParPortPortAddress. Referenced by ParPortSetMode().

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 556 of file PortAccessNt4.c. References FUNC_ENTER, ParPortUnsetModeNt4(), and ParPortUnsetModeWdm().

NTSTATUS ParPortUnsetModeNt4 (  PDEVICE_EXTENSION  Pdx  )

Unset the operational mode of the parallel port, NT4 version. 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 ParPortSetModeNt4() This function must be run at IRQL == PASSIVE_LEVEL. Definition at line 484 of file PortAccessNt4.c. References DBG_PRINT, FUNC_ENTER, and _DEVICE_EXTENSION::ParPortPortAddress. Referenced by ParPortUnsetMode().

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