WM8731 Audio codec 2 wire driver. More...

#include <cpu/types.h>
#include <drv/i2c.h>

Defines
#define	WM8731_INSEL 2
	Input selector.
#define	WM8731_BYPASS BV(3)
	Input to output.
#define	WM8731_SIDEATT_MASK 0xC0
	Side tone attenuation.
#define	WM8731_DEEMP_MASK 0x6
	De-emphasis control.
#define	WM8731_LINEINPD BV(0)
	LineIn power down.
#define	WM8731_MICPD BV(1)
	Mic power down.
#define	WM8731_ADCPD BV(2)
	ADC power down.
#define	WM8731_DACPD BV(3)
	DAC power down.
#define	WM8731_OUTPD BV(4)
	OUT power down.
#define	WM8731_OSCBIT BV(5)
	OSC power down.
#define	WM8731_CLKOUTPD BV(6)
	CLKOUT powerdown.
#define	WM8731_FORMAT_BITS_MASK 0x3
	Audio format.
#define	WM8731_IWL_BITS 0xC
	Audio format.
#define	WM8731_NORMAL_256FS_48KHZ 0
	Sampling rate control.
Functions
void	wm8731_setVolume (Wm8731 *ctx, uint16_t device, uint8_t volume)
	Set the volume of select device line in or Headphone.

Detailed Description

WM8731 Audio codec 2 wire driver.

Definition in file wm8731.h.

Define Documentation

#define WM8731_BYPASS BV(3)

Input to output.

Definition at line 93 of file wm8731.h.

#define WM8731_DEEMP_MASK 0x6

De-emphasis control.

Definition at line 114 of file wm8731.h.

#define WM8731_FORMAT_BITS_MASK 0x3

Audio format.

Definition at line 138 of file wm8731.h.

#define WM8731_INSEL 2

Input selector.

Definition at line 86 of file wm8731.h.

#define WM8731_IWL_BITS 0xC

Audio format.

Definition at line 147 of file wm8731.h.

#define WM8731_NORMAL_256FS_48KHZ 0

Sampling rate control.

Definition at line 168 of file wm8731.h.

#define WM8731_SIDEATT_MASK 0xC0

Side tone attenuation.

Definition at line 100 of file wm8731.h.

Set the volume of select device line in or Headphone.

The volume is express in %, and the volume range is 0-100%.

Definition at line 71 of file wm8731.c.