Bitstream control

Control synchronous bitstream I/O. More...

Functions
hpi_err_t	HPI_Bitstream_GetActivity (const hpi_hsubsys_t *phSubSys, hpi_handle_t hControl, uint16_t *pwClkActivity, uint16_t *pwDataActivity)
	Returns 2 indicative measurements of the incoming data stream.

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Detailed Description

Control synchronous bitstream I/O.

Only valid on ASI4346 adapters.

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Function Documentation

hpi_err_t HPI_Bitstream_GetActivity	(	const hpi_hsubsys_t *	phSubSys,
		hpi_handle_t	hControl,
		uint16_t *	pwClkActivity,
		uint16_t *	pwDataActivity
	)

Returns 2 indicative measurements of the incoming data stream.

The clock input is deemed inactive if no data bytes are received within a certain number of calls to a polling routine. The time this takes varies according to the number of active streams. If there is clock activity, the data activity indicator is a sample of 16 bits from the incoming data. If this is persistently 0 or 0xFFFF, this may indicate that the data input is inactive.

Returns:

0 on success, or one of the HPI_ERROR_CODES.

Parameters:

phSubSys	Vestigial subsys handle (unused), may be set to NULL
hControl	Handle to bitstream control
pwClkActivity	1==clock is active, 0==clock is inactive
pwDataActivity	1 word sampled from the incoming raw data