asynPortDriver Class Reference

Base class for asyn port drivers; handles most of the bookkeeping for writing an asyn port driver with standard asyn interfaces and a parameter library. More...

#include <asynPortDriver.h>

Inheritance diagram for asynPortDriver:

List of all members.

Public Member Functions
	asynPortDriver (const char *portName, int maxAddr, int paramTableSize, int interfaceMask, int interruptMask, int asynFlags, int autoConnect, int priority, int stackSize)
	Constructor for the asynPortDriver class.
virtual	~asynPortDriver ()
	Destructor for asynPortDriver class; frees resources allocated when port driver is created.
virtual asynStatus	lock ()
	Locks the driver to prevent multiple threads from accessing memory at the same time.
virtual asynStatus	unlock ()
	Unocks the driver; called when an asyn client or driver is done accessing common memory.
virtual asynStatus	getAddress (asynUser *pasynUser, int *address)
	Returns the asyn address associated with a pasynUser structure.
virtual asynStatus	readInt32 (asynUser *pasynUser, epicsInt32 *value)
	Called when asyn clients call pasynInt32->read().
virtual asynStatus	writeInt32 (asynUser *pasynUser, epicsInt32 value)
	Called when asyn clients call pasynInt32->write().
virtual asynStatus	readUInt32Digital (asynUser *pasynUser, epicsUInt32 *value, epicsUInt32 mask)
	Called when asyn clients call pasynUInt32Digital->read().
virtual asynStatus	writeUInt32Digital (asynUser *pasynUser, epicsUInt32 value, epicsUInt32 mask)
	Called when asyn clients call pasynUInt32Digital->write().
virtual asynStatus	setInterruptUInt32Digital (asynUser *pasynUser, epicsUInt32 mask, interruptReason reason)
	Called when asyn clients call pasynUInt32Digital->setInterrupt().
virtual asynStatus	clearInterruptUInt32Digital (asynUser *pasynUser, epicsUInt32 mask)
	Called when asyn clients call pasynUInt32Digital->clearInterrupt().
virtual asynStatus	getInterruptUInt32Digital (asynUser *pasynUser, epicsUInt32 *mask, interruptReason reason)
	Called when asyn clients call pasynUInt32Digital->getInterrupt().
virtual asynStatus	getBounds (asynUser *pasynUser, epicsInt32 *low, epicsInt32 *high)
	Called when asyn clients call pasynInt32->getBounds(), returning the bounds on the asynInt32 interface for drivers that use raw units.
virtual asynStatus	readFloat64 (asynUser *pasynUser, epicsFloat64 *value)
	Called when asyn clients call pasynFloat64->read().
virtual asynStatus	writeFloat64 (asynUser *pasynUser, epicsFloat64 value)
	Called when asyn clients call pasynFloat64->write().
virtual asynStatus	readOctet (asynUser *pasynUser, char *value, size_t maxChars, size_t *nActual, int *eomReason)
	Called when asyn clients call pasynOctet->read().
virtual asynStatus	writeOctet (asynUser *pasynUser, const char *value, size_t maxChars, size_t *nActual)
	Called when asyn clients call pasynOctet->write().
virtual asynStatus	readInt8Array (asynUser *pasynUser, epicsInt8 *value, size_t nElements, size_t *nIn)
	Called when asyn clients call pasynInt8Array->read().
virtual asynStatus	writeInt8Array (asynUser *pasynUser, epicsInt8 *value, size_t nElements)
	Called when asyn clients call pasynInt8Array->write().
virtual asynStatus	doCallbacksInt8Array (epicsInt8 *value, size_t nElements, int reason, int addr)
	Called by driver to do the callbacks to registered clients on the asynInt8Array interface.
virtual asynStatus	readInt16Array (asynUser *pasynUser, epicsInt16 *value, size_t nElements, size_t *nIn)
	Called when asyn clients call pasynInt16Array->read().
virtual asynStatus	writeInt16Array (asynUser *pasynUser, epicsInt16 *value, size_t nElements)
	Called when asyn clients call pasynInt16Array->write().
virtual asynStatus	doCallbacksInt16Array (epicsInt16 *value, size_t nElements, int reason, int addr)
	Called by driver to do the callbacks to registered clients on the asynInt16Array interface.
virtual asynStatus	readInt32Array (asynUser *pasynUser, epicsInt32 *value, size_t nElements, size_t *nIn)
	Called when asyn clients call pasynInt32Array->read().
virtual asynStatus	writeInt32Array (asynUser *pasynUser, epicsInt32 *value, size_t nElements)
	Called when asyn clients call pasynInt32Array->write().
virtual asynStatus	doCallbacksInt32Array (epicsInt32 *value, size_t nElements, int reason, int addr)
	Called by driver to do the callbacks to registered clients on the asynInt32Array interface.
virtual asynStatus	readFloat32Array (asynUser *pasynUser, epicsFloat32 *value, size_t nElements, size_t *nIn)
	Called when asyn clients call pasynFloat32Array->read().
virtual asynStatus	writeFloat32Array (asynUser *pasynUser, epicsFloat32 *value, size_t nElements)
	Called when asyn clients call pasynFloat32Array->write().
virtual asynStatus	doCallbacksFloat32Array (epicsFloat32 *value, size_t nElements, int reason, int addr)
	Called by driver to do the callbacks to registered clients on the asynFloat32Array interface.
virtual asynStatus	readFloat64Array (asynUser *pasynUser, epicsFloat64 *value, size_t nElements, size_t *nIn)
	Called when asyn clients call pasynFloat64Array->read().
virtual asynStatus	writeFloat64Array (asynUser *pasynUser, epicsFloat64 *value, size_t nElements)
	Called when asyn clients call pasynFloat64Array->write().
virtual asynStatus	doCallbacksFloat64Array (epicsFloat64 *value, size_t nElements, int reason, int addr)
	Called by driver to do the callbacks to registered clients on the asynFloat64Array interface.
virtual asynStatus	readGenericPointer (asynUser *pasynUser, void *pointer)
	Called when asyn clients call pasynGenericPointer->read().
virtual asynStatus	writeGenericPointer (asynUser *pasynUser, void *pointer)
	Called when asyn clients call pasynGenericPointer->write().
virtual asynStatus	doCallbacksGenericPointer (void *pointer, int reason, int addr)
	Called by driver to do the callbacks to registered clients on the asynGenericPointer interface.
virtual asynStatus	drvUserCreate (asynUser *pasynUser, const char *drvInfo, const char **pptypeName, size_t *psize)
	Called by asynManager to pass a pasynUser structure and drvInfo string to the driver; Assigns pasynUser->reason based on the value of the drvInfo string.
virtual asynStatus	drvUserGetType (asynUser *pasynUser, const char **pptypeName, size_t *psize)
	Returns strings associated with driver-specific commands.
virtual asynStatus	drvUserDestroy (asynUser *pasynUser)
	Frees any resources allocated by drvUserCreate.
virtual void	report (FILE *fp, int details)
	Reports on status of the driver.
virtual asynStatus	connect (asynUser *pasynUser)
	Connects driver to device; the base class implementation simply calls pasynManager->exceptionConnect.
virtual asynStatus	disconnect (asynUser *pasynUser)
	Disconnects driver from device; the base class implementation simply calls pasynManager->exceptionDisconnect.
virtual asynStatus	createParam (const char *name, asynParamType type, int *index)
	Creates a parameter in the parameter library.
virtual asynStatus	createParam (int list, const char *name, asynParamType type, int *index)
	Creates a parameter in the parameter library.
virtual asynStatus	findParam (const char *name, int *index)
	Finds a parameter in the parameter library.
virtual asynStatus	findParam (int list, const char *name, int *index)
	Finds a parameter in the parameter library.
virtual asynStatus	getParamName (int index, const char **name)
	Returns the name of a parameter in the parameter library.
virtual asynStatus	getParamName (int list, int index, const char **name)
	Returns the name of a parameter in the parameter library.
virtual void	reportSetParamErrors (asynStatus status, int index, int list, const char *functionName)
	Reports errors when setting parameters.
virtual void	reportGetParamErrors (asynStatus status, int index, int list, const char *functionName)
	Reports errors when getting parameters.
virtual asynStatus	setIntegerParam (int index, int value)
	Sets the value for an integer in the parameter library.
virtual asynStatus	setIntegerParam (int list, int index, int value)
	Sets the value for an integer in the parameter library.
virtual asynStatus	setUIntDigitalParam (int index, epicsUInt32 value, epicsUInt32 mask)
	Sets the value for a UInt32Digital in the parameter library.
virtual asynStatus	setUIntDigitalParam (int list, int index, epicsUInt32 value, epicsUInt32 mask)
	Sets the value for a UInt32Digital in the parameter library.
virtual asynStatus	setDoubleParam (int index, double value)
	Sets the value for a double in the parameter library.
virtual asynStatus	setDoubleParam (int list, int index, double value)
	Sets the value for a double in the parameter library.
virtual asynStatus	setStringParam (int index, const char *value)
	Sets the value for a string in the parameter library.
virtual asynStatus	setStringParam (int list, int index, const char *value)
	Sets the value for a string in the parameter library.
virtual asynStatus	getIntegerParam (int index, int *value)
	Returns the value for an integer from the parameter library.
virtual asynStatus	getIntegerParam (int list, int index, int *value)
	Returns the value for an integer from the parameter library.
virtual asynStatus	getUIntDigitalParam (int index, epicsUInt32 *value, epicsUInt32 mask)
	Returns the value for an UInt32Digital parameter from the parameter library.
virtual asynStatus	getUIntDigitalParam (int list, int index, epicsUInt32 *value, epicsUInt32 mask)
	Returns the value for an UInt32Digital parameter from the parameter library.
virtual asynStatus	getDoubleParam (int index, double *value)
	Returns the value for a double from the parameter library.
virtual asynStatus	getDoubleParam (int list, int index, double *value)
	Returns the value for a double from the parameter library.
virtual asynStatus	getStringParam (int index, int maxChars, char *value)
	Returns the value for a string from the parameter library.
virtual asynStatus	getStringParam (int list, int index, int maxChars, char *value)
	Returns the value for a string from the parameter library.
virtual asynStatus	callParamCallbacks ()
	Calls callParamCallbacks(0, 0) i.e.
virtual asynStatus	callParamCallbacks (int addr)
	Calls callParamCallbacks(addr, addr) i.e.
virtual asynStatus	callParamCallbacks (int list, int addr)
	Calls paramList::callCallbacks(addr) for a specific parameter list.
virtual void	reportParams (FILE *fp, int details)
	Calls paramList::report(fp, details) for each parameter list that the driver supports.
void	callbackTask ()
Public Attributes
char *	portName
	The name of this asyn port.
int	maxAddr
	The maximum asyn address (addr) supported by this driver.
Protected Attributes
asynUser *	pasynUserSelf
	asynUser connected to ourselves for asynTrace
asynStandardInterfaces	asynStdInterfaces
	The asyn interfaces this driver implements.

---

Detailed Description

Base class for asyn port drivers; handles most of the bookkeeping for writing an asyn port driver with standard asyn interfaces and a parameter library.

---

Constructor & Destructor Documentation

asynPortDriver::asynPortDriver	(	const char *	portName,
		int	maxAddr,
		int	paramTableSize,
		int	interfaceMask,
		int	interruptMask,
		int	asynFlags,
		int	autoConnect,
		int	priority,
		int	stackSize
	)

Constructor for the asynPortDriver class.

Parameters:

[in]	portName	The name of the asyn port driver to be created.
[in]	maxAddr	The maximum number of asyn addr addresses this driver supports. Often it is 1 (which is the minimum), but some drivers, for example a 16-channel D/A or A/D would support values > 1. This controls the number of parameter tables that are created.
[in]	paramTableSize	The number of parameters that this driver supports. This controls the size of the parameter tables.
[in]	interfaceMask	Bit mask defining the asyn interfaces that this driver supports. The bit mask values are defined in asynPortDriver.h, e.g. asynInt32Mask.
[in]	interruptMask	Bit mask definining the asyn interfaces that can generate interrupts (callbacks). The bit mask values are defined in asynPortDriver.h, e.g. asynInt8ArrayMask.
[in]	asynFlags	Flags when creating the asyn port driver; includes ASYN_CANBLOCK and ASYN_MULTIDEVICE.
[in]	autoConnect	The autoConnect flag for the asyn port driver. 1 if the driver should autoconnect.
[in]	priority	The thread priority for the asyn port driver thread if ASYN_CANBLOCK is set in asynFlags. If it is 0 then the default value of epicsThreadPriorityMedium will be assigned by asynManager.
[in]	stackSize	The stack size for the asyn port driver thread if ASYN_CANBLOCK is set in asynFlags. If it is 0 then the default value of epicsThreadGetStackSize(epicsThreadStackMedium) will be assigned by asynManager.

asynPortDriver::~asynPortDriver

(

)

[virtual]

Destructor for asynPortDriver class; frees resources allocated when port driver is created.

---

Member Function Documentation

void asynPortDriver::callbackTask

(

)

asynStatus asynPortDriver::callParamCallbacks	(	int	list,
		int	addr
	)			[virtual]

Calls paramList::callCallbacks(addr) for a specific parameter list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	addr	The asyn address to be used in the callback. Typically the same value as list.

asynStatus asynPortDriver::callParamCallbacks

(

int

addr

)

[virtual]

Calls callParamCallbacks(addr, addr) i.e.

with list=addr, which is normal.

asynStatus asynPortDriver::callParamCallbacks

(

)

[virtual]

Calls callParamCallbacks(0, 0) i.e.

with both list and asyn address.

asynStatus asynPortDriver::clearInterruptUInt32Digital	(	asynUser *	pasynUser,
		epicsUInt32	mask
	)			[virtual]

Called when asyn clients call pasynUInt32Digital->clearInterrupt().

The base class implementation simply sets the value in the parameter library. Derived classes will reimplement this function if they need to perform an action when an clearInterrupt is called.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	mask	Interrupt mask.

asynStatus asynPortDriver::connect

(

asynUser *

pasynUser

)

[virtual]

Connects driver to device; the base class implementation simply calls pasynManager->exceptionConnect.

Derived classes can reimplement this function for real connection management.

Parameters:

[in]

pasynUser

The pasynUser structure which contains information about the port and address

asynStatus asynPortDriver::createParam	(	int	list,
		const char *	name,
		asynParamType	type,
		int *	index
	)			[virtual]

Creates a parameter in the parameter library.

Calls paramList::addParam (name, index) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	name	Parameter name
[in]	type	Parameter type
[out]	index	Parameter number

asynStatus asynPortDriver::createParam	(	const char *	name,
		asynParamType	type,
		int *	index
	)			[virtual]

Creates a parameter in the parameter library.

Calls paramList::createParam (list, name, index) for all parameters lists.

Parameters:

[in]	name	Parameter name
[in]	type	Parameter type
[out]	index	Parameter number

asynStatus asynPortDriver::disconnect

(

asynUser *

pasynUser

)

[virtual]

Disconnects driver from device; the base class implementation simply calls pasynManager->exceptionDisconnect.

Derived classes can reimplement this function for real connection management.

Parameters:

[in]

pasynUser

The pasynUser structure which contains information about the port and address

asynStatus asynPortDriver::doCallbacksFloat32Array	(	epicsFloat32 *	value,
		size_t	nElements,
		int	reason,
		int	addr
	)			[virtual]

Called by driver to do the callbacks to registered clients on the asynFloat32Array interface.

Parameters:

[in]	value	Address of the array.
[in]	nElements	Number of elements in the array.
[in]	reason	A client will be called if reason matches pasynUser->reason registered for that client.
[in]	addr	A client will be called if addr matches the asyn address registered for that client.

asynStatus asynPortDriver::doCallbacksFloat64Array	(	epicsFloat64 *	value,
		size_t	nElements,
		int	reason,
		int	addr
	)			[virtual]

Called by driver to do the callbacks to registered clients on the asynFloat64Array interface.

Parameters:

[in]	value	Address of the array.
[in]	nElements	Number of elements in the array.
[in]	reason	A client will be called if reason matches pasynUser->reason registered for that client.
[in]	addr	A client will be called if addr matches the asyn address registered for that client.

asynStatus asynPortDriver::doCallbacksGenericPointer	(	void *	genericPointer,
		int	reason,
		int	address
	)			[virtual]

Called by driver to do the callbacks to registered clients on the asynGenericPointer interface.

Parameters:

[in]	genericPointer	Pointer to the object
[in]	reason	A client will be called if reason matches pasynUser->reason registered for that client.
[in]	address	A client will be called if address matches the address registered for that client.

asynStatus asynPortDriver::doCallbacksInt16Array	(	epicsInt16 *	value,
		size_t	nElements,
		int	reason,
		int	addr
	)			[virtual]

Called by driver to do the callbacks to registered clients on the asynInt16Array interface.

Parameters:

[in]	value	Address of the array.
[in]	nElements	Number of elements in the array.
[in]	reason	A client will be called if reason matches pasynUser->reason registered for that client.
[in]	addr	A client will be called if addr matches the asyn address registered for that client.

asynStatus asynPortDriver::doCallbacksInt32Array	(	epicsInt32 *	value,
		size_t	nElements,
		int	reason,
		int	addr
	)			[virtual]

Called by driver to do the callbacks to registered clients on the asynInt32Array interface.

Parameters:

[in]	value	Address of the array.
[in]	nElements	Number of elements in the array.
[in]	reason	A client will be called if reason matches pasynUser->reason registered for that client.
[in]	addr	A client will be called if addr matches the asyn address registered for that client.

asynStatus asynPortDriver::doCallbacksInt8Array	(	epicsInt8 *	value,
		size_t	nElements,
		int	reason,
		int	addr
	)			[virtual]

Called by driver to do the callbacks to registered clients on the asynInt8Array interface.

Parameters:

[in]	value	Address of the array.
[in]	nElements	Number of elements in the array.
[in]	reason	A client will be called if reason matches pasynUser->reason registered for that client.
[in]	addr	A client will be called if addr matches the asyn address registered for that client.

asynStatus asynPortDriver::drvUserCreate	(	asynUser *	pasynUser,
		const char *	drvInfo,
		const char **	pptypeName,
		size_t *	psize
	)			[virtual]

Called by asynManager to pass a pasynUser structure and drvInfo string to the driver; Assigns pasynUser->reason based on the value of the drvInfo string.

This base class implementation looks up the drvInfo string in the parameter list.

Parameters:

[in]	pasynUser	pasynUser structure that driver will modify
[in]	drvInfo	String containing information about what driver function is being referenced
[out]	pptypeName	Location in which driver can write information.
[out]	psize	Location where driver can write information about size of pptypeName

asynStatus asynPortDriver::drvUserDestroy

(

asynUser *

pasynUser

)

[virtual]

Frees any resources allocated by drvUserCreate.

This base class implementation does nothing. Derived classes could reimplement this function if they allocate any resources in drvUserCreate, but asynPortDriver classes typically do not need to do so.

asynStatus asynPortDriver::drvUserGetType	(	asynUser *	pasynUser,
		const char **	pptypeName,
		size_t *	psize
	)			[virtual]

Returns strings associated with driver-specific commands.

This base class implementation does nothing. Derived classes could reimplement this function to return the requested information, but most do not reimplement this.

Parameters:

[in]	pasynUser	pasynUser structure that driver will modify
[out]	pptypeName	Location in which driver can write information.
[out]	psize	Location where driver can write information about size of pptypeName

asynStatus asynPortDriver::findParam	(	int	list,
		const char *	name,
		int *	index
	)			[virtual]

Finds a parameter in the parameter library.

Calls paramList::findParam (name, index) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	name	Parameter name
[out]	index	Parameter number

asynStatus asynPortDriver::findParam	(	const char *	name,
		int *	index
	)			[virtual]

Finds a parameter in the parameter library.

Calls findParam(0, name, index), i.e. for parameter list 0.

Parameters:

[in]	name	Parameter name
[out]	index	Parameter number

asynStatus asynPortDriver::getAddress	(	asynUser *	pasynUser,
		int *	address
	)			[virtual]

Returns the asyn address associated with a pasynUser structure.

Derived classes rarely need to reimplement this function.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[out]	address	Returned address.

Returns:

Returns asynError if the address is > maxAddr value passed to asynPortDriver::asynPortDriver.

asynStatus asynPortDriver::getBounds	(	asynUser *	pasynUser,
		epicsInt32 *	low,
		epicsInt32 *	high
	)			[virtual]

Called when asyn clients call pasynInt32->getBounds(), returning the bounds on the asynInt32 interface for drivers that use raw units.

Device support uses these values for unit conversion. The base class implementation simply returns low=0, high=65535. Derived classes can reimplement this function if they support raw units with different limits.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[out]	low	Address of the low limit.
[out]	high	Address of the high limit.

asynStatus asynPortDriver::getDoubleParam	(	int	list,
		int	index,
		double *	value
	)			[virtual]

Returns the value for a double from the parameter library.

Calls paramList::getDouble (index, value) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	index	The parameter number
[out]	value	Address of value to get.

asynStatus asynPortDriver::getDoubleParam	(	int	index,
		double *	value
	)			[virtual]

Returns the value for a double from the parameter library.

Calls getDoubleParam(0, index, value) i.e. for parameter list 0.

Parameters:

[in]	index	The parameter number
[out]	value	Address of value to get.

asynStatus asynPortDriver::getIntegerParam	(	int	list,
		int	index,
		int *	value
	)			[virtual]

Returns the value for an integer from the parameter library.

Calls paramList::getInteger (index, value) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	index	The parameter number
[out]	value	Address of value to get.

asynStatus asynPortDriver::getIntegerParam	(	int	index,
		int *	value
	)			[virtual]

Returns the value for an integer from the parameter library.

Calls getIntegerParam(0, index, value) i.e. for parameter list 0.

Parameters:

[in]	index	The parameter number
[out]	value	Address of value to get.

asynStatus asynPortDriver::getInterruptUInt32Digital	(	asynUser *	pasynUser,
		epicsUInt32 *	mask,
		interruptReason	reason
	)			[virtual]

Called when asyn clients call pasynUInt32Digital->getInterrupt().

The base class implementation simply returns the value from the parameter library. Derived classes rarely need to reimplement this function.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[out]	mask	Interrupt mask address.
[in]	reason	Interrupt reason.

asynStatus asynPortDriver::getParamName	(	int	list,
		int	index,
		const char **	name
	)			[virtual]

Returns the name of a parameter in the parameter library.

Calls paramList::getName (index, name) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	index	Parameter number
[out]	name	Parameter name

asynStatus asynPortDriver::getParamName	(	int	index,
		const char **	name
	)			[virtual]

Returns the name of a parameter in the parameter library.

Calls getParamName(0, index, name) i.e. for parameter list 0.

Parameters:

[in]	index	Parameter number
[out]	name	Parameter name

asynStatus asynPortDriver::getStringParam	(	int	list,
		int	index,
		int	maxChars,
		char *	value
	)			[virtual]

Returns the value for a string from the parameter library.

Calls paramList::getString (index, maxChars, value) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	index	The parameter number
[in]	maxChars	Maximum number of characters to return.
[out]	value	Address of value to get.

asynStatus asynPortDriver::getStringParam	(	int	index,
		int	maxChars,
		char *	value
	)			[virtual]

Returns the value for a string from the parameter library.

Calls getStringParam(0, index, maxChars, value) i.e. for parameter list 0.

Parameters:

[in]	index	The parameter number
[in]	maxChars	Maximum number of characters to return.
[out]	value	Address of value to get.

asynStatus asynPortDriver::getUIntDigitalParam	(	int	list,
		int	index,
		epicsUInt32 *	value,
		epicsUInt32	mask
	)			[virtual]

Returns the value for an UInt32Digital parameter from the parameter library.

Calls paramList::getUInt32 (index, value, mask) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	index	The parameter number
[out]	value	Address of value to get.
[in]	mask	The mask to apply when getting the value.

asynStatus asynPortDriver::getUIntDigitalParam	(	int	index,
		epicsUInt32 *	value,
		epicsUInt32	mask
	)			[virtual]

Returns the value for an UInt32Digital parameter from the parameter library.

Calls getUIntDigitalParam(0, index, value, mask) i.e. for parameter list 0.

Parameters:

[in]	index	The parameter number
[out]	value	Address of value to get.
[in]	mask	The mask to apply when getting the value

asynStatus asynPortDriver::lock

(

)

[virtual]

Locks the driver to prevent multiple threads from accessing memory at the same time.

This function is called whenever asyn clients call the functions on the asyn interfaces. Drivers with their own background threads must call lock() to protect conflicts with asyn clients. They can call unlock() to permit asyn clients to run during times that the driver thread is idle or is performing compute bound work that does not access memory also accessible by clients.

asynStatus asynPortDriver::readFloat32Array	(	asynUser *	pasynUser,
		epicsFloat32 *	value,
		size_t	nElements,
		size_t *	nIn
	)			[virtual]

Called when asyn clients call pasynFloat32Array->read().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Pointer to the array to read.
[in]	nElements	Number of elements to read.
[out]	nIn	Number of elements actually read.

asynStatus asynPortDriver::readFloat64	(	asynUser *	pasynUser,
		epicsFloat64 *	value
	)			[virtual]

Called when asyn clients call pasynFloat64->read().

The base class implementation simply returns the value from the parameter library. Derived classes rarely need to reimplement this function.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Address of the value to read.

asynStatus asynPortDriver::readFloat64Array	(	asynUser *	pasynUser,
		epicsFloat64 *	value,
		size_t	nElements,
		size_t *	nIn
	)			[virtual]

Called when asyn clients call pasynFloat64Array->read().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Pointer to the array to read.
[in]	nElements	Number of elements to read.
[out]	nIn	Number of elements actually read.

Reimplemented in testAsynPortDriver.

asynStatus asynPortDriver::readGenericPointer	(	asynUser *	pasynUser,
		void *	genericPointer
	)			[virtual]

Called when asyn clients call pasynGenericPointer->read().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	genericPointer	Pointer to the object to read.

asynStatus asynPortDriver::readInt16Array	(	asynUser *	pasynUser,
		epicsInt16 *	value,
		size_t	nElements,
		size_t *	nIn
	)			[virtual]

Called when asyn clients call pasynInt16Array->read().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Pointer to the array to read.
[in]	nElements	Number of elements to read.
[out]	nIn	Number of elements actually read.

asynStatus asynPortDriver::readInt32	(	asynUser *	pasynUser,
		epicsInt32 *	value
	)			[virtual]

Called when asyn clients call pasynInt32->read().

The base class implementation simply returns the value from the parameter library. Derived classes rarely need to reimplement this function.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[out]	value	Address of the value to read.

asynStatus asynPortDriver::readInt32Array	(	asynUser *	pasynUser,
		epicsInt32 *	value,
		size_t	nElements,
		size_t *	nIn
	)			[virtual]

Called when asyn clients call pasynInt32Array->read().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Pointer to the array to read.
[in]	nElements	Number of elements to read.
[out]	nIn	Number of elements actually read.

asynStatus asynPortDriver::readInt8Array	(	asynUser *	pasynUser,
		epicsInt8 *	value,
		size_t	nElements,
		size_t *	nIn
	)			[virtual]

Called when asyn clients call pasynInt8Array->read().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Pointer to the array to read.
[in]	nElements	Number of elements to read.
[out]	nIn	Number of elements actually read.

asynStatus asynPortDriver::readOctet	(	asynUser *	pasynUser,
		char *	value,
		size_t	maxChars,
		size_t *	nActual,
		int *	eomReason
	)			[virtual]

Called when asyn clients call pasynOctet->read().

The base class implementation simply returns the value from the parameter library. Derived classes rarely need to reimplement this function.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Address of the string to read.
[in]	maxChars	Maximum number of characters to read.
[out]	nActual	Number of characters actually read. Base class sets this to strlen(value).
[out]	eomReason	Reason that read terminated. Base class sets this to ASYN_EOM_END.

asynStatus asynPortDriver::readUInt32Digital	(	asynUser *	pasynUser,
		epicsUInt32 *	value,
		epicsUInt32	mask
	)			[virtual]

Called when asyn clients call pasynUInt32Digital->read().

The base class implementation simply returns the value from the parameter library. Derived classes rarely need to reimplement this function.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[out]	value	Address of the value to read.
[in]	mask	Mask value to use when reading the value.

void asynPortDriver::report	(	FILE *	fp,
		int	details
	)			[virtual]

Reports on status of the driver.

Parameters:

[in]	fp	The file pointer on which report information will be written
[in]	details	The level of report detail desired

If details > 1 then information is printed about the contents of the parameter library. If details > 2 then information is printed about all of the interrupt callbacks registered. Derived classes typically reimplement this function to print driver-specific details and then call this base class function.

void asynPortDriver::reportGetParamErrors	(	asynStatus	status,
		int	index,
		int	list,
		const char *	functionName
	)			[virtual]

Reports errors when getting parameters.

asynParamBadIndex and asynParamWrongType are printed with ASYN_TRACE_ERROR because they should never happen. asynParamUndefined is printed with ASYN_TRACE_FLOW because it is an expected error if the value is read before it is defined, which device support can do.

Parameters:

[in]	status	The error status.
[in]	index	The parameter number
[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	functionName	The name of the function that generated the error

void asynPortDriver::reportParams	(	FILE *	fp,
		int	details
	)			[virtual]

Calls paramList::report(fp, details) for each parameter list that the driver supports.

Parameters:

[in]	fp	The file pointer on which report information will be written
[in]	details	The level of report detail desired.

void asynPortDriver::reportSetParamErrors	(	asynStatus	status,
		int	index,
		int	list,
		const char *	functionName
	)			[virtual]

Reports errors when setting parameters.

Parameters:

[in]	status	The error status.
[in]	index	The parameter number
[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	functionName	The name of the function that generated the error

asynStatus asynPortDriver::setDoubleParam	(	int	list,
		int	index,
		double	value
	)			[virtual]

Sets the value for a double in the parameter library.

Calls paramList::setDouble (index, value) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	index	The parameter number
[in]	value	Value to set.

asynStatus asynPortDriver::setDoubleParam	(	int	index,
		double	value
	)			[virtual]

Sets the value for a double in the parameter library.

Calls setDoubleParam(0, index, value) i.e. for parameter list 0.

Parameters:

[in]	index	The parameter number
[in]	value	Value to set.

asynStatus asynPortDriver::setIntegerParam	(	int	list,
		int	index,
		int	value
	)			[virtual]

Sets the value for an integer in the parameter library.

Calls paramList::setInteger (index, value) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	index	The parameter number
[in]	value	Value to set.

asynStatus asynPortDriver::setIntegerParam	(	int	index,
		int	value
	)			[virtual]

Sets the value for an integer in the parameter library.

Calls setIntegerParam(0, index, value) i.e. for parameter list 0.

Parameters:

[in]	index	The parameter number
[in]	value	Value to set.

asynStatus asynPortDriver::setInterruptUInt32Digital	(	asynUser *	pasynUser,
		epicsUInt32	mask,
		interruptReason	reason
	)			[virtual]

Called when asyn clients call pasynUInt32Digital->setInterrupt().

The base class implementation simply sets the value in the parameter library. Derived classes will reimplement this function if they need to perform an action when an setInterrupt is called.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	mask	Interrupt mask.
[in]	reason	Interrupt reason.

asynStatus asynPortDriver::setStringParam	(	int	list,
		int	index,
		const char *	value
	)			[virtual]

Sets the value for a string in the parameter library.

Calls paramList::setString (index, value) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	index	The parameter number
[in]	value	Address of value to set.

asynStatus asynPortDriver::setStringParam	(	int	index,
		const char *	value
	)			[virtual]

Sets the value for a string in the parameter library.

Calls setStringParam(0, index, value) i.e. for parameter list 0.

Parameters:

[in]	index	The parameter number
[in]	value	Address of value to set.

asynStatus asynPortDriver::setUIntDigitalParam	(	int	list,
		int	index,
		epicsUInt32	value,
		epicsUInt32	mask
	)			[virtual]

Sets the value for a UInt32Digital in the parameter library.

Calls paramList::setInteger (index, value) for the parameter list indexed by list.

Parameters:

[in]	list	The parameter list number. Must be < maxAddr passed to asynPortDriver::asynPortDriver.
[in]	index	The parameter number
[in]	value	Value to set.
[in]	mask	The mask to use when setting the value.

asynStatus asynPortDriver::setUIntDigitalParam	(	int	index,
		epicsUInt32	value,
		epicsUInt32	mask
	)			[virtual]

Sets the value for a UInt32Digital in the parameter library.

Calls setUIntDigitalParam(0, index, value) i.e. for parameter list 0.

Parameters:

[in]	index	The parameter number
[in]	value	Value to set.
[in]	mask	The mask to use when setting the value.

asynStatus asynPortDriver::unlock

(

)

[virtual]

Unocks the driver; called when an asyn client or driver is done accessing common memory.

asynStatus asynPortDriver::writeFloat32Array	(	asynUser *	pasynUser,
		epicsFloat32 *	value,
		size_t	nElements
	)			[virtual]

Called when asyn clients call pasynFloat32Array->write().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Pointer to the array to write.
[in]	nElements	Number of elements to write.

asynStatus asynPortDriver::writeFloat64	(	asynUser *	pasynUser,
		epicsFloat64	value
	)			[virtual]

Called when asyn clients call pasynFloat64->write().

The base class implementation simply sets the value in the parameter library and calls any registered callbacks for this pasynUser->reason and address. Derived classes will reimplement this function if they need to perform an action when an asynFloat64 value is written.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Value to write.

Reimplemented in testAsynPortDriver.

asynStatus asynPortDriver::writeFloat64Array	(	asynUser *	pasynUser,
		epicsFloat64 *	value,
		size_t	nElements
	)			[virtual]

Called when asyn clients call pasynFloat64Array->write().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Pointer to the array to write.
[in]	nElements	Number of elements to write.

asynStatus asynPortDriver::writeGenericPointer	(	asynUser *	pasynUser,
		void *	genericPointer
	)			[virtual]

Called when asyn clients call pasynGenericPointer->write().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	genericPointer	Pointer to the object to write.

asynStatus asynPortDriver::writeInt16Array	(	asynUser *	pasynUser,
		epicsInt16 *	value,
		size_t	nElements
	)			[virtual]

Called when asyn clients call pasynInt16Array->write().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Pointer to the array to write.
[in]	nElements	Number of elements to write.

asynStatus asynPortDriver::writeInt32	(	asynUser *	pasynUser,
		epicsInt32	value
	)			[virtual]

Called when asyn clients call pasynInt32->write().

The base class implementation simply sets the value in the parameter library and calls any registered callbacks for this pasynUser->reason and address. Derived classes will reimplement this function if they need to perform an action when an asynInt32 value is written.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Value to write.

Reimplemented in testAsynPortDriver.

asynStatus asynPortDriver::writeInt32Array	(	asynUser *	pasynUser,
		epicsInt32 *	value,
		size_t	nElements
	)			[virtual]

Called when asyn clients call pasynInt32Array->write().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Pointer to the array to write.
[in]	nElements	Number of elements to write.

asynStatus asynPortDriver::writeInt8Array	(	asynUser *	pasynUser,
		epicsInt8 *	value,
		size_t	nElements
	)			[virtual]

Called when asyn clients call pasynInt8Array->write().

The base class implementation simply prints an error message. Derived classes may reimplement this function if required.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Pointer to the array to write.
[in]	nElements	Number of elements to write.

asynStatus asynPortDriver::writeOctet	(	asynUser *	pasynUser,
		const char *	value,
		size_t	nChars,
		size_t *	nActual
	)			[virtual]

Called when asyn clients call pasynOctet->write().

The base class implementation simply sets the value in the parameter library and calls any registered callbacks for this pasynUser->reason and address. Derived classes will reimplement this function if they need to perform an action when an asynOctet value is written.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Address of the string to write.
[in]	nChars	Number of characters to write.
[out]	nActual	Number of characters actually written.

asynStatus asynPortDriver::writeUInt32Digital	(	asynUser *	pasynUser,
		epicsUInt32	value,
		epicsUInt32	mask
	)			[virtual]

Called when asyn clients call pasynUInt32Digital->write().

The base class implementation simply sets the value in the parameter library and calls any registered callbacks for this pasynUser->reason and address. Derived classes will reimplement this function if they need to perform an action when an asynInt32 value is written.

Parameters:

[in]	pasynUser	pasynUser structure that encodes the reason and address.
[in]	value	Value to write.
[in]	mask	Mask value to use when writinging the value.

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Member Data Documentation

asynStandardInterfaces asynPortDriver::asynStdInterfaces [protected]

The asyn interfaces this driver implements.

int asynPortDriver::maxAddr

The maximum asyn address (addr) supported by this driver.

asynUser* asynPortDriver::pasynUserSelf [protected]

asynUser connected to ourselves for asynTrace

char* asynPortDriver::portName

The name of this asyn port.

---

The documentation for this class was generated from the following files:

• /home/epics/devel/asynR4-16/asyn/miscellaneous/asynPortDriver.h
• /home/epics/devel/asynR4-16/asyn/miscellaneous/asynPortDriver.cpp