i2s_demo.h

i2s usb audio demo lpc2138

#ifndef I2S_DEMO_H_FILE
#define I2S_DEMO_H_FILE 1

#define DEBUG  1

#define ACTUAL_FREQ_PCLK_I2S Fcclk
#define DESIRED_FREQ_PCLK_I2S 48000000	  /* cure for the digital divide */

#define I2S_RXFIFO_DEPTH 4
#define I2S_TXFIFO_DEPTH 4

enum e_codec_status 
{
  CODEC_STOP = 0,
  CODEC_RECORD = 1,
  CODEC_PLAYBACK = 2,
  CODEC_LOOPBACK = 3,
  CODEC_RECORD_PAUSE = 4,
  CODEC_RECORD_STOP = 5,
  CODEC_PLAYBACK_PAUSE = 6,
  CODEC_PLAYBACK_STOP = 7
};

typedef struct 
{
  unsigned int sample_rate;
  unsigned int wordwidth;
  unsigned int ws_sel;
  unsigned int mono;
  unsigned int ws_halfperiod;
  const char config_msg[80];
} i2s_config_struct;

/* exported functions */

extern void I2S_Demo_main(void);						  
extern void IRQ_I2S_service(void);


#endif