Functions Drivers call to register with the INDI event utilities.

Callbacks are called when a read on a file descriptor will not block. More...

Typedefs
typedef void(	IE_CBF )(int readfiledes, void *userpointer)
typedef void(	IE_TCF )(void *userpointer)
typedef void(	IE_WPF )(void *userpointer)
Functions
int	IEAddCallback (int readfiledes, IE_CBF *fp, void *userpointer)
int	IEAddTimer (int millisecs, IE_TCF *fp, void *userpointer)
int	IEAddWorkProc (IE_WPF *fp, void *userpointer)
void	IERmCallback (int callbackid)
void	IERmTimer (int timerid)
void	IERmWorkProc (int workprocid)

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Detailed Description

Callbacks are called when a read on a file descriptor will not block.

Timers are called once after a specified interval. Workprocs are called when there is nothing else to do. The "Add" functions return a unique id for use with their corresponding "Rm" removal function. An arbitrary pointer may be specified when a function is registered which will be stored and forwarded unchanged when the function is later invoked.

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Typedef Documentation

typedef void( IE_CBF)(int readfiledes, void *userpointer)

Definition at line 226 of file indidevapi.h.

typedef void( IE_TCF)(void *userpointer)

Definition at line 228 of file indidevapi.h.

typedef void( IE_WPF)(void *userpointer)

Definition at line 230 of file indidevapi.h.

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Function Documentation

int IEAddCallback	(	int	readfiledes,
		IE_CBF *	fp,
		void *	userpointer
	)

Register a new callback, fp, to be called with userpointer as argument when readfiledes is ready.

Parameters:

	readfiledes	file descriptor.
	fp	a pointer to the callback function.
	userpointer	a pointer to be passed to the callback function when called.

Returns:

a unique callback id for use with IERmCallback().

int IEAddTimer	(	int	millisecs,
		IE_TCF *	fp,
		void *	userpointer
	)

Register a new timer function, fp, to be called with ud as argument after ms.

Add to list in order of decreasing time from epoch, ie, last entry runs soonest. The timer will only invoke the callback function once. You need to call addTimer again if you want to repeat the process.

Parameters:

	millisecs	timer period in milliseconds.
	fp	a pointer to the callback function.
	userpointer	a pointer to be passed to the callback function when called.

Returns:

a unique id for use with IERmTimer().

int IEAddWorkProc	(	IE_WPF *	fp,
		void *	userpointer
	)

Add a new work procedure, fp, to be called with ud when nothing else to do.

Parameters:

	fp	a pointer to the work procedure callback function.
	userpointer	a pointer to be passed to the callback function when called.

Returns:

a unique id for use with IERmWorkProc().

void IERmCallback

(

int

callbackid

)

Remove a callback function.

Parameters:

callbackid

the callback ID returned from IEAddCallback()

void IERmTimer

(

int

timerid

)

Remove the timer with the given timerid, as returned from IEAddTimer.

Parameters:

timerid

the timer callback ID returned from IEAddTimer().

void IERmWorkProc

(

int

workprocid

)

Remove the work procedure with the given workprocid, as returned from IEAddWorkProc().

Parameters:

workprocid

the work procedure callback ID returned from IEAddWorkProc().