OpenTap.IVisa Interface Reference

Interface implemented by VISA libraries. More...

Public Member Functions
int	viOpenDefaultRM (out int sesn)
	Open default RM session.
int	viFindRsrc (int sesn, string expr, out int vi, out int retCount, StringBuilder desc)
	Find device.
int	viFindNext (int vi, StringBuilder desc)
	Find next device.
int	viParseRsrc (int sesn, string desc, ref short intfType, ref short intfNum)
	Parse resource string to get interface information.
int	viParseRsrcEx (int sesn, string desc, ref short intfType, ref short intfNum, StringBuilder rsrcClass, StringBuilder expandedUnaliasedName, StringBuilder aliasIfExists)
	Parse resource string to get extended interface information.
int	viOpen (int sesn, string viDesc, int mode, int timeout, out int vi)
	Open session.
int	viClose (int vi)
	Close session.
int	viGetAttribute1 (int vi, int attrName, out byte attrValue)
	Get attribute, returning a byte.
int	viGetAttribute2 (int vi, int attrName, StringBuilder attrValue)
	Get attribute, filling a pre-allocated StringBuilder buffer.
int	viGetAttribute3 (int vi, int attrName, out int attrValue)
	Get attribute, returning an int.
int	viSetAttribute1 (int vi, int attrName, byte attrValue)
	Set attribute, providing a byte value.
int	viSetAttribute2 (int vi, int attrName, int attrValue)
	Set attribute, providing an int value.
int	viStatusDesc (int vi, int status, StringBuilder desc)
	Get status code description.
int	viEnableEvent (int vi, int eventType, short mechanism, int context)
	Enable event.
int	viDisableEvent (int vi, int eventType, short mechanism)
	Disable event.
int	viInstallHandler (int vi, int eventType, viEventHandler handler, int UserHandle)
	Install handler.
int	viUninstallHandler (int vi, int eventType, viEventHandler handler, int userHandle)
	Uninstall handler.
unsafe int	viRead (int vi, ArraySegment< Byte > buffer, int count, out int retCount)
	Read data from device.
unsafe int	viWrite (int vi, ArraySegment< Byte > buffer, int count, out int retCount)
	Write data to device.
int	viReadSTB (int vi, ref short status)
	Read status byte.
int	viClear (int vi)
	Clear a device.
int	viLock (int vi, int lockType, int timeout, string requestedKey, StringBuilder accessKey)
	Lock resource.
int	viUnlock (int vi)
	Unlock resource.
delegate int	viEventHandler (int vi, int eventType, int context, int userHandle)
	Event handler prototype.

Detailed Description

Interface implemented by VISA libraries.