V4PCIDspFifo Class Reference

Inheritance diagram for V4PCIDspFifo:

Collaboration diagram for V4PCIDspFifo:

Public Member Functions
	V4PCIDspFifo (Hip *hip, unsigned short board, unsigned short fifo_addr)
	Open a link to a DSP FIFO. Assumes the DSP has been booted.
Status	Write (uint16_t *buf, size_t len)
	Write a block of words from the PC to a DSP FIFO. More...
Status	Read (uint16_t *buf, size_t len)
	Read a block of words from a DSP FIFO to the PC. More...
size_t	HowFull ()
	Return the number of words used in the DSP FIFO. More...
size_t	HowEmpty ()
	Returns the number of words free in the DSP FIFO. More...
void	Flush ()
virtual Status	Write (uint16_t *buf, size_t len)=0
virtual Status	Read (uint16_t *buf, size_t len)=0
virtual size_t	HowFull ()=0
virtual size_t	HowEmpty ()=0
virtual void	Flush ()=0

Additional Inherited Members
Public Types inherited from Fifo
enum	Status { OK , FULL , EMPTY }

Member Function Documentation

Flush()

void V4PCIDspFifo::Flush ( )

virtual

Implements Fifo.

HowEmpty()

size_t V4PCIDspFifo::HowEmpty ( )

virtual

Returns the number of words free in the DSP FIFO.

Implements Fifo.

References HowFull().

HowFull()

size_t V4PCIDspFifo::HowFull ( )

virtual

Return the number of words used in the DSP FIFO.

Implements Fifo.

Referenced by HowEmpty().

Read()

Fifo::Status V4PCIDspFifo::Read ( uint16_t *  buf, size_t  len  )

virtual

Read a block of words from a DSP FIFO to the PC.

Returns

Fifo::OK if successful, or Fifo::EMPTY if size words could not be read from it atomically.

Implements Fifo.

Write()

Fifo::Status V4PCIDspFifo::Write ( uint16_t *  buf, size_t  len  )

virtual

Write a block of words from the PC to a DSP FIFO.

Returns

Fifo::OK if successful, or Fifo::FULL if size words could not be written to it atomically.

Implements Fifo.