spi_vscodec.c File Reference

#include <dev/vscodec.h>
#include <sys/event.h>
#include <sys/timer.h>
#include <sys/nutdebug.h>
#include <sys/bankmem.h>
#include <stdlib.h>
#include <string.h>
#include <memdebug.h>
#include <fcntl.h>

Include dependency graph for spi_vscodec.c:

Go to the source code of this file.

Functions
int	VsCodecWaitReady (NUTDEVICE *dev, uint32_t tmo)
	Wait until codec is ready.
uint16_t	VsCodecReg (NUTDEVICE *dev, uint_fast8_t op, uint_fast8_t reg, uint_fast16_t val)
uint16_t	VsCodecMode (NUTDEVICE *dev, uint_fast16_t flags, uint_fast16_t mask)
	Read and modify VLSI audio codec mode flags.
int	VsDecoderSetVolume (NUTDEVICE *dev, int left, int right)
	Set volume.
int	VsDecoderSetBass (NUTDEVICE *dev, int treb, int tfin, int bass, int bfin)
	Set Bass.
uint16_t	VsCodecBeep (NUTDEVICE *dev, uint16_t fsin)
	Start or stop sine wave beeper.
int	VsDecoderBufferInit (NUTDEVICE *dev, uint32_t size)
void	FeederThread (void *arg)
int	VsCodecIOCtl (NUTDEVICE *dev, int req, void *conf)
	Handle I/O controls for audio codec.
int	VsCodecRead (NUTFILE *nfp, void *data, int len)
	Read from the encoder.
int	VsCodecWrite (NUTFILE *nfp, CONST void *data, int len)
	Write to decoder.
int	VsCodecWrite_P (NUTFILE *nfp, PGM_P buffer, int len)
	Write program data to decoder.
NUTFILE *	VsCodecOpen (NUTDEVICE *dev, CONST char *name, int mode, int acc)
int	VsCodecClose (NUTFILE *nfp)
Variables
uint8_t	zero_chunk [VSCODEC_DATA_CHUNK_SIZE]
Internal Command Flags
#define	VSREQ_PLAY   0x00000001
	Force immediate player start.
#define	VSREQ_CANCEL   0x00000002
	Force immediate player stop.
#define	VSREQ_VOLUPD   0x00000004
	Volume update.
#define	VSREQ_AUDIOE   0x00000008
	Audio enhancement update.
#define	VSREQ_BEEP   0x00000010
	Sine wave test.
#define	VSREQ_RECORD   0x00000020
	Start recording.