paramList Class Reference

Class to support parameter library (also called parameter list); set and get values indexed by parameter number (pasynUser->reason) and do asyn callbacks when parameters change. More...

#include <asynPortDriver.h>

List of all members.

Public Member Functions
	paramList (int nVals, asynStandardInterfaces *pasynInterfaces)
	Constructor for paramList class.
	~paramList ()
	Destructor for paramList class; frees resources allocated in constructor.
asynStatus	createParam (const char *name, asynParamType type, int *index)
	Adds a new parameter to the parameter library.
asynStatus	findParam (const char *name, int *index)
	Finds a parameter in the parameter library.
asynStatus	getName (int index, const char **name)
	Returns the name of a parameter from the parameter library.
asynStatus	setInteger (int index, int value)
	Sets the value for an integer in the parameter library.
asynStatus	setUInt32 (int index, epicsUInt32 value, epicsUInt32 mask)
	Sets the value for an integer in the parameter library.
asynStatus	setDouble (int index, double value)
	Sets the value for a double in the parameter library.
asynStatus	setString (int index, const char *string)
	Sets the value for a string in the parameter library.
asynStatus	getInteger (int index, int *value)
	Returns the value for an integer from the parameter library.
asynStatus	getUInt32 (int index, epicsUInt32 *value, epicsUInt32 mask)
	Returns the value for an integer from the parameter library.
asynStatus	getDouble (int index, double *value)
	Returns the value for a double from the parameter library.
asynStatus	getString (int index, int maxChars, char *value)
	Returns the value for a string from the parameter library.
asynStatus	setUInt32Interrupt (int index, epicsUInt32 mask, interruptReason reason)
	Sets the value of the UInt32Interrupt in the parameter library.
asynStatus	clearUInt32Interrupt (int index, epicsUInt32 mask)
	Clears the UInt32Interrupt in the parameter library.
asynStatus	getUInt32Interrupt (int index, epicsUInt32 *mask, interruptReason reason)
	Returns the UInt32Interrupt from the parameter library.
asynStatus	callCallbacks (int addr)
	Calls the registered asyn callback functions for all clients for any parameters that have changed since the last time this function was called.
asynStatus	callCallbacks ()
void	report (FILE *fp, int details)
	Reports on status of the paramList.

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Detailed Description

Class to support parameter library (also called parameter list); set and get values indexed by parameter number (pasynUser->reason) and do asyn callbacks when parameters change.

The parameter class supports 3 types of parameters: int, double and dynamic-length strings.

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Constructor & Destructor Documentation

paramList::paramList	(	int	nVals,
		asynStandardInterfaces *	pasynInterfaces
	)

Constructor for paramList class.

Parameters:

[in]	nVals	Number of parameters in the list.
[in]	pasynInterfaces	Pointer to asynStandardInterfaces structure, used for callbacks

paramList::~paramList

(

)

Destructor for paramList class; frees resources allocated in constructor.

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Member Function Documentation

asynStatus paramList::callCallbacks

(

)

asynStatus paramList::callCallbacks

(

int

addr

)

Calls the registered asyn callback functions for all clients for any parameters that have changed since the last time this function was called.

Parameters:

[in]

addr

A client will be called if addr matches the asyn address registered for that client.

Don't do anything if interruptAccept=0. There is a thread that will do all callbacks once when interruptAccept goes to 1.

asynStatus paramList::clearUInt32Interrupt	(	int	index,
		epicsUInt32	mask
	)

Clears the UInt32Interrupt in the parameter library.

Parameters:

[in]	index	The parameter number
[in]	mask	The interrupt mask.

Returns:

Returns asynParamBadIndex if the index is not valid, or asynParamWrongType if the parameter type is not asynParamUInt32Digital

asynStatus paramList::createParam	(	const char *	name,
		asynParamType	type,
		int *	index
	)

Adds a new parameter to the parameter library.

Parameters:

[in]	name	The name of this parameter
[in]	type	The type of this parameter
[out]	index	The parameter number

Returns:

Returns asynParamAlreadyExists if the parameter already exists, or asynBadParamIndex if adding this parameter would exceed the size of the parameter list.

asynStatus paramList::findParam	(	const char *	name,
		int *	index
	)

Finds a parameter in the parameter library.

Parameters:

[in]	name	The name of this parameter
[out]	index	The parameter number

Returns:

Returns asynParamNotFound if name is not found in the parameter list.

asynStatus paramList::getDouble	(	int	index,
		double *	value
	)

Returns the value for a double from the parameter library.

Parameters:

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

Returns:

Returns asynParamBadIndex if the index is not valid, asynParamWrongType if the parameter type is not asynParamFloat64, or asynParamUndefined if the value has not been defined.

asynStatus paramList::getInteger	(	int	index,
		int *	value
	)

Returns the value for an integer from the parameter library.

Parameters:

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

Returns:

Returns asynParamBadIndex if the index is not valid, asynParamWrongType if the parameter type is not asynParamInt32, or asynParamUndefined if the value has not been defined.

asynStatus paramList::getName	(	int	index,
		const char **	value
	)

Returns the name of a parameter from the parameter library.

Parameters:

[in]	index	The parameter number
[out]	value	Address of pointer that will contain name string pointer.

Returns:

Returns asynParamBadIndex if the index is not valid

asynStatus paramList::getString	(	int	index,
		int	maxChars,
		char *	value
	)

Returns the value for a string from the parameter library.

Parameters:

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

Returns:

Returns asynParamBadIndex if the index is not valid, asynParamWrongType if the parameter type is not asynParamOctet, or asynParamUndefined if the value has not been defined.

asynStatus paramList::getUInt32	(	int	index,
		epicsUInt32 *	value,
		epicsUInt32	mask
	)

Returns the value for an integer from the parameter library.

Parameters:

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

Returns:

Returns asynParamBadIndex if the index is not valid, asynParamWrongType if the parameter type is not asynParamUInt32Digital, or asynParamUndefined if the value has not been defined.

asynStatus paramList::getUInt32Interrupt	(	int	index,
		epicsUInt32 *	mask,
		interruptReason	reason
	)

Returns the UInt32Interrupt from the parameter library.

Parameters:

[in]	index	The parameter number
[out]	mask	The address of the interrupt mask to return.
[in]	reason	The interrupt reason.

Returns:

Returns asynParamBadIndex if the index is not valid, or asynParamWrongType if the parameter type is not asynParamUInt32Digital

void paramList::report	(	FILE *	fp,
		int	details
	)

Reports on status of the paramList.

Parameters:

[in]	fp	The file pointer on which report information will be written
[in]	details	The level of report detail desired. Prints the number of parameters in the list, and if details >1 also prints the index, data type, name, and value of each parameter.

asynStatus paramList::setDouble	(	int	index,
		double	value
	)

Sets the value for a double in the parameter library.

Parameters:

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

Returns:

Returns asynParamBadIndex if the index is not valid or asynParamWrongType if the parameter type is not asynParamFloat64.

asynStatus paramList::setInteger	(	int	index,
		int	value
	)

Sets the value for an integer in the parameter library.

Parameters:

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

Returns:

Returns asynParamBadIndex if the index is not valid or asynParamWrongType if the parametertype is not asynParamInt32.

asynStatus paramList::setString	(	int	index,
		const char *	value
	)

Sets the value for a string in the parameter library.

Parameters:

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

Returns:

Returns asynParamBadIndex if the index is not valid or asynParamWrongType if the parameter type is not asynParamOctet.

asynStatus paramList::setUInt32	(	int	index,
		epicsUInt32	value,
		epicsUInt32	mask
	)

Sets the value for an integer in the parameter library.

Parameters:

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

Returns:

Returns asynParamBadIndex if the index is not valid or asynParamWrongType if the parameter type is not asynParamUInt32Digital.

asynStatus paramList::setUInt32Interrupt	(	int	index,
		epicsUInt32	mask,
		interruptReason	reason
	)

Sets the value of the UInt32Interrupt in the parameter library.

Parameters:

[in]	index	The parameter number
[in]	mask	The interrupt mask.
[in]	reason	The interrupt reason.

Returns:

Returns asynParamBadIndex if the index is not valid, or asynParamWrongType if the parameter type is not asynParamUInt32Digital

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

• /home/epics/devel/asynHEAD/asyn/miscellaneous/asynPortDriver.h
• /home/epics/devel/asynHEAD/asyn/miscellaneous/asynPortDriver.cpp