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/**
******************************************************************************
* @file wm8994.c
* @author MCD Application Team
* @brief This file provides the WM8994 Audio Codec driver.
******************************************************************************
* @attention
*
* Copyright (c) 2016 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "wm8994.h"
/** @addtogroup BSP
* @{
*/
/** @addtogroup Components
* @{
*/
/** @addtogroup wm8994
* @brief This file provides a set of functions needed to drive the
* WM8994 audio codec.
* @{
*/
/** @defgroup WM8994_Private_Types
* @{
*/
/**
* @}
*/
/** @defgroup WM8994_Private_Defines
* @{
*/
/* Uncomment this line to enable verifying data sent to codec after each write
operation (for debug purpose) */
#if !defined (VERIFY_WRITTENDATA)
/*#define VERIFY_WRITTENDATA*/
#endif /* VERIFY_WRITTENDATA */
/**
* @}
*/
/** @defgroup WM8994_Private_Macros
* @{
*/
/**
* @}
*/
/** @defgroup WM8994_Private_Variables
* @{
*/
/* Audio codec driver structure initialization */
AUDIO_DrvTypeDef wm8994_drv =
{
wm8994_Init,
wm8994_DeInit,
wm8994_ReadID,
wm8994_Play,
wm8994_Pause,
wm8994_Resume,
wm8994_Stop,
wm8994_SetFrequency,
wm8994_SetVolume,
wm8994_SetMute,
wm8994_SetOutputMode,
wm8994_Reset
};
static uint32_t outputEnabled = 0;
static uint32_t inputEnabled = 0;
static uint8_t ColdStartup = 1;
/**
* @}
*/
/** @defgroup WM8994_Function_Prototypes
* @{
*/
static uint8_t CODEC_IO_Write(uint8_t Addr, uint16_t Reg, uint16_t Value);
/**
* @}
*/
/** @defgroup WM8994_Private_Functions
* @{
*/
/**
* @brief Initializes the audio codec and the control interface.
* @param DeviceAddr: Device address on communication Bus.
* @param OutputInputDevice: can be OUTPUT_DEVICE_SPEAKER, OUTPUT_DEVICE_HEADPHONE,
* OUTPUT_DEVICE_BOTH, OUTPUT_DEVICE_AUTO, INPUT_DEVICE_DIGITAL_MICROPHONE_1,
* INPUT_DEVICE_DIGITAL_MICROPHONE_2, INPUT_DEVICE_DIGITAL_MIC1_MIC2,
* INPUT_DEVICE_INPUT_LINE_1 or INPUT_DEVICE_INPUT_LINE_2.
* @param Volume: Initial volume level (from 0 (Mute) to 100 (Max))
* @param AudioFreq: Audio Frequency
* @retval 0 if correct communication, else wrong communication
*/
uint32_t wm8994_Init(uint16_t DeviceAddr, uint16_t OutputInputDevice, uint8_t Volume, uint32_t AudioFreq)
{
uint32_t counter = 0;
uint16_t output_device = OutputInputDevice & 0xFF;
uint16_t input_device = OutputInputDevice & 0xFF00;
uint16_t power_mgnt_reg_1 = 0;
uint16_t tmp;
/* Initialize the Control interface of the Audio Codec */
AUDIO_IO_Init();
/* wm8994 Errata Work-Arounds */
tmp = 0x0003;
counter += CODEC_IO_Write(DeviceAddr, 0x102, tmp);
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, 0x817, tmp);
counter += CODEC_IO_Write(DeviceAddr, 0x102, tmp);
/* Enable VMID soft start (fast), Start-up Bias Current Enabled */
tmp = 0x006C;
counter += CODEC_IO_Write(DeviceAddr, WM8994_ANTIPOP2, tmp);
/* Enable bias generator, Enable VMID */
if (input_device > 0)
{
tmp = 0x0013;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_1, tmp);
}
else
{
tmp = 0x0003;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_1, tmp);
}
/* Add Delay */
AUDIO_IO_Delay(50);
/* Path Configurations for output */
if (output_device > 0)
{
outputEnabled = 1;
switch (output_device)
{
case OUTPUT_DEVICE_SPEAKER:
/* Enable DAC1 (Left), Enable DAC1 (Right),
Disable DAC2 (Left), Disable DAC2 (Right)*/
tmp = 0x0C0C;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_5, tmp);
/* Enable the AIF1 Timeslot 0 (Left) to DAC 1 (Left) mixer path */
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_LMR, tmp);
/* Enable the AIF1 Timeslot 0 (Right) to DAC 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_RMR, tmp);
/* Disable the AIF1 Timeslot 1 (Left) to DAC 2 (Left) mixer path */
tmp = 0x0002;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_LMR, tmp);
/* Disable the AIF1 Timeslot 1 (Right) to DAC 2 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_RMR, tmp);
break;
case OUTPUT_DEVICE_HEADPHONE:
/* Disable DAC1 (Left), Disable DAC1 (Right),
Enable DAC2 (Left), Enable DAC2 (Right)*/
tmp = 0x0303;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_5, tmp);
/* Enable the AIF1 Timeslot 0 (Left) to DAC 1 (Left) mixer path */
tmp = 0x0001;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_LMR, tmp);
/* Enable the AIF1 Timeslot 0 (Right) to DAC 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_RMR, tmp);
/* Disable the AIF1 Timeslot 1 (Left) to DAC 2 (Left) mixer path */
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_LMR, tmp);
/* Disable the AIF1 Timeslot 1 (Right) to DAC 2 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_RMR, tmp);
break;
case OUTPUT_DEVICE_BOTH:
if (input_device == INPUT_DEVICE_DIGITAL_MIC1_MIC2)
{
/* Enable DAC1 (Left), Enable DAC1 (Right),
also Enable DAC2 (Left), Enable DAC2 (Right)*/
tmp = 0x0303 | 0x0C0C;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_5, tmp);
/* Enable the AIF1 Timeslot 0 (Left) to DAC 1 (Left) mixer path
Enable the AIF1 Timeslot 1 (Left) to DAC 1 (Left) mixer path */
tmp = 0x0003;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_LMR, tmp);
/* Enable the AIF1 Timeslot 0 (Right) to DAC 1 (Right) mixer path
Enable the AIF1 Timeslot 1 (Right) to DAC 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_RMR, tmp);
/* Enable the AIF1 Timeslot 0 (Left) to DAC 2 (Left) mixer path
Enable the AIF1 Timeslot 1 (Left) to DAC 2 (Left) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_LMR, tmp);
/* Enable the AIF1 Timeslot 0 (Right) to DAC 2 (Right) mixer path
Enable the AIF1 Timeslot 1 (Right) to DAC 2 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_RMR, tmp);
}
else
{
/* Enable DAC1 (Left), Enable DAC1 (Right),
also Enable DAC2 (Left), Enable DAC2 (Right)*/
tmp = 0x0303 | 0x0C0C;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_5, tmp);
/* Enable the AIF1 Timeslot 0 (Left) to DAC 1 (Left) mixer path */
tmp = 0x0001;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_LMR, tmp);
/* Enable the AIF1 Timeslot 0 (Right) to DAC 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_RMR, tmp);
/* Enable the AIF1 Timeslot 1 (Left) to DAC 2 (Left) mixer path */
tmp = 0x0002;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_LMR, tmp);
/* Enable the AIF1 Timeslot 1 (Right) to DAC 2 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_RMR, tmp);
}
break;
case OUTPUT_DEVICE_AUTO :
default:
/* Disable DAC1 (Left), Disable DAC1 (Right),
Enable DAC2 (Left), Enable DAC2 (Right)*/
tmp = 0x0303;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_5, tmp);
/* Enable the AIF1 Timeslot 0 (Left) to DAC 1 (Left) mixer path */
tmp = 0x0001;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_LMR, tmp);
/* Enable the AIF1 Timeslot 0 (Right) to DAC 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_RMR, tmp);
/* Disable the AIF1 Timeslot 1 (Left) to DAC 2 (Left) mixer path */
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_LMR, tmp);
/* Disable the AIF1 Timeslot 1 (Right) to DAC 2 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_RMR, tmp);
break;
}
}
else
{
outputEnabled = 0;
}
/* Path Configurations for input */
if (input_device > 0)
{
inputEnabled = 1;
switch (input_device)
{
case INPUT_DEVICE_DIGITAL_MICROPHONE_2 :
/* Enable AIF1ADC2 (Left), Enable AIF1ADC2 (Right)
* Enable DMICDAT2 (Left), Enable DMICDAT2 (Right)
* Enable Left ADC, Enable Right ADC */
tmp = 0x0C30;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_4, tmp);
/* Enable AIF1 DRC2 Signal Detect & DRC in AIF1ADC2 Left/Right Timeslot 1 */
tmp = 0x00DB;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DRC2, tmp);
/* Disable IN1L, IN1R, IN2L, IN2R, Enable Thermal sensor & shutdown */
tmp = 0x6000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_2, tmp);
/* Enable the DMIC2(Left) to AIF1 Timeslot 1 (Left) mixer path */
tmp = 0x0002;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC2_LMR, tmp);
/* Enable the DMIC2(Right) to AIF1 Timeslot 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC2_RMR, tmp);
/* GPIO1 pin configuration GP1_DIR = output, GP1_FN = AIF1 DRC2 signal detect */
tmp = 0x000E;
counter += CODEC_IO_Write(DeviceAddr, WM8994_GPIO1, tmp);
break;
case INPUT_DEVICE_INPUT_LINE_1 :
/* IN1LN_TO_IN1L, IN1LP_TO_VMID, IN1RN_TO_IN1R, IN1RP_TO_VMID */
tmp = 0x0011;
counter += CODEC_IO_Write(DeviceAddr, WM8994_INPUT_MIXER_2, tmp);
/* Disable mute on IN1L_TO_MIXINL and +30dB on IN1L PGA output */
tmp = 0x0035;
counter += CODEC_IO_Write(DeviceAddr, WM8994_INPUT_MIXER_3, tmp);
/* Disable mute on IN1R_TO_MIXINL, Gain = +30dB */
counter += CODEC_IO_Write(DeviceAddr, WM8994_INPUT_MIXER_4, tmp);
/* Enable AIF1ADC1 (Left), Enable AIF1ADC1 (Right)
* Enable Left ADC, Enable Right ADC */
tmp = 0x0303;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_4, tmp);
/* Enable AIF1 DRC1 Signal Detect & DRC in AIF1ADC1 Left/Right Timeslot 0 */
tmp = 0x00DB;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DRC1, tmp);
/* Enable IN1L and IN1R, Disable IN2L and IN2R, Enable Thermal sensor & shutdown */
tmp = 0x6350;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_2, tmp);
/* Enable the ADCL(Left) to AIF1 Timeslot 0 (Left) mixer path */
tmp = 0x0002;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC1_LMR, tmp);
/* Enable the ADCR(Right) to AIF1 Timeslot 0 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC1_RMR, tmp);
/* GPIO1 pin configuration GP1_DIR = output, GP1_FN = AIF1 DRC1 signal detect */
tmp = 0x000D;
counter += CODEC_IO_Write(DeviceAddr, WM8994_GPIO1, tmp);
break;
case INPUT_DEVICE_DIGITAL_MICROPHONE_1 :
/* Enable AIF1ADC1 (Left), Enable AIF1ADC1 (Right)
* Enable DMICDAT1 (Left), Enable DMICDAT1 (Right)
* Enable Left ADC, Enable Right ADC */
tmp = 0x030C;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_4, tmp);
/* Enable AIF1 DRC2 Signal Detect & DRC in AIF1ADC1 Left/Right Timeslot 0 */
tmp = 0x00DB;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DRC1, tmp);
/* Disable IN1L, IN1R, IN2L, IN2R, Enable Thermal sensor & shutdown */
tmp = 0x6350;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_2, tmp);
/* Enable the DMIC2(Left) to AIF1 Timeslot 0 (Left) mixer path */
tmp = 0x0002;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC1_LMR, tmp);
/* Enable the DMIC2(Right) to AIF1 Timeslot 0 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC1_RMR, tmp);
/* GPIO1 pin configuration GP1_DIR = output, GP1_FN = AIF1 DRC1 signal detect */
tmp = 0x000D;
counter += CODEC_IO_Write(DeviceAddr, WM8994_GPIO1, tmp);
break;
case INPUT_DEVICE_DIGITAL_MIC1_MIC2 :
/* Enable AIF1ADC1 (Left), Enable AIF1ADC1 (Right)
* Enable DMICDAT1 (Left), Enable DMICDAT1 (Right)
* Enable Left ADC, Enable Right ADC */
tmp = 0x0F3C;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_4, tmp);
/* Enable AIF1 DRC2 Signal Detect & DRC in AIF1ADC2 Left/Right Timeslot 1 */
tmp = 0x00DB;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DRC2, tmp);
/* Enable AIF1 DRC2 Signal Detect & DRC in AIF1ADC1 Left/Right Timeslot 0 */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DRC1, tmp);
/* Disable IN1L, IN1R, Enable IN2L, IN2R, Thermal sensor & shutdown */
tmp = 0x63A0;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_2, tmp);
/* Enable the DMIC2(Left) to AIF1 Timeslot 0 (Left) mixer path */
tmp = 0x0002;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC1_LMR, tmp);
/* Enable the DMIC2(Right) to AIF1 Timeslot 0 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC1_RMR, tmp);
/* Enable the DMIC2(Left) to AIF1 Timeslot 1 (Left) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC2_LMR, tmp);
/* Enable the DMIC2(Right) to AIF1 Timeslot 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC2_RMR, tmp);
/* GPIO1 pin configuration GP1_DIR = output, GP1_FN = AIF1 DRC1 signal detect */
tmp = 0x000D;
counter += CODEC_IO_Write(DeviceAddr, WM8994_GPIO1, tmp);
break;
case INPUT_DEVICE_INPUT_LINE_2 :
default:
/* Actually, no other input devices supported */
counter++;
break;
}
}
else
{
inputEnabled = 0;
}
/* Clock Configurations */
switch (AudioFreq)
{
case AUDIO_FREQUENCY_8K:
/* AIF1 Sample Rate = 8 (KHz), ratio=256 */
tmp = 0x0003;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_16K:
/* AIF1 Sample Rate = 16 (KHz), ratio=256 */
tmp = 0x0033;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_32K:
/* AIF1 Sample Rate = 32 (KHz), ratio=256 */
tmp = 0x0063;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_48K:
/* AIF1 Sample Rate = 48 (KHz), ratio=256 */
tmp = 0x0083;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_96K:
/* AIF1 Sample Rate = 96 (KHz), ratio=256 */
tmp = 0x00A3;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_11K:
/* AIF1 Sample Rate = 11.025 (KHz), ratio=256 */
tmp = 0x0013;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_22K:
/* AIF1 Sample Rate = 22.050 (KHz), ratio=256 */
tmp = 0x0043;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_44K:
/* AIF1 Sample Rate = 44.1 (KHz), ratio=256 */
tmp = 0x0073;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
default:
/* AIF1 Sample Rate = 48 (KHz), ratio=256 */
tmp = 0x0083;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
}
if(input_device == INPUT_DEVICE_DIGITAL_MIC1_MIC2)
{
/* AIF1 Word Length = 16-bits, AIF1 Format = DSP mode */
tmp = 0x4018;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_CONTROL1, tmp);
}
else
{
/* AIF1 Word Length = 16-bits, AIF1 Format = I2S (Default Register Value) */
tmp = 0x4010;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_CONTROL1, tmp);
}
/* slave mode */
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_MASTER_SLAVE, tmp);
/* Enable the DSP processing clock for AIF1, Enable the core clock */
tmp = 0x000A;
counter += CODEC_IO_Write(DeviceAddr, WM8994_CLOCKING1, tmp);
/* Enable AIF1 Clock, AIF1 Clock Source = MCLK1 pin */
tmp = 0x0001;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_CLOCKING1, tmp);
if (output_device > 0) /* Audio output selected */
{
if (output_device == OUTPUT_DEVICE_HEADPHONE)
{
/* Select DAC1 (Left) to Left Headphone Output PGA (HPOUT1LVOL) path */
tmp = 0x0100;
counter += CODEC_IO_Write(DeviceAddr, WM8994_OUTPUT_MIXER_1, tmp);
/* Select DAC1 (Right) to Right Headphone Output PGA (HPOUT1RVOL) path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_OUTPUT_MIXER_2, tmp);
/* Startup sequence for Headphone */
if(ColdStartup)
{
tmp = 0x8100;
counter += CODEC_IO_Write(DeviceAddr,WM8994_WRITE_SEQ_CTRL1, tmp);
ColdStartup=0;
/* Add Delay */
AUDIO_IO_Delay(300);
}
else /* Headphone Warm Start-Up */
{
tmp = 0x8108;
counter += CODEC_IO_Write(DeviceAddr,WM8994_WRITE_SEQ_CTRL1, tmp);
/* Add Delay */
AUDIO_IO_Delay(50);
}
/* Soft un-Mute the AIF1 Timeslot 0 DAC1 path L&R */
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_FILTER1, tmp);
}
/* Analog Output Configuration */
/* Enable SPKRVOL PGA, Enable SPKMIXR, Enable SPKLVOL PGA, Enable SPKMIXL */
tmp = 0x0300;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_3, tmp);
/* Left Speaker Mixer Volume = 0dB */
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_SPKMIXL_ATT, tmp);
/* Speaker output mode = Class D, Right Speaker Mixer Volume = 0dB ((0x23, 0x0100) = class AB)*/
counter += CODEC_IO_Write(DeviceAddr, WM8994_SPKMIXR_ATT, tmp);
/* Unmute DAC2 (Left) to Left Speaker Mixer (SPKMIXL) path,
Unmute DAC2 (Right) to Right Speaker Mixer (SPKMIXR) path */
tmp = 0x0300;
counter += CODEC_IO_Write(DeviceAddr, WM8994_SPEAKER_MIXER, tmp);
/* Enable bias generator, Enable VMID, Enable SPKOUTL, Enable SPKOUTR */
tmp = 0x3003;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_1, tmp);
/* Headphone/Speaker Enable */
if (input_device == INPUT_DEVICE_DIGITAL_MIC1_MIC2)
{
/* Enable Class W, Class W Envelope Tracking = AIF1 Timeslots 0 and 1 */
tmp = 0x0205;
counter += CODEC_IO_Write(DeviceAddr, WM8994_CLASS_W, tmp);
}
else
{
/* Enable Class W, Class W Envelope Tracking = AIF1 Timeslot 0 */
tmp = 0x0005;
counter += CODEC_IO_Write(DeviceAddr, WM8994_CLASS_W, tmp);
}
/* Enable bias generator, Enable VMID, Enable HPOUT1 (Left) and Enable HPOUT1 (Right) input stages */
/* idem for Speaker */
power_mgnt_reg_1 |= 0x0303 | 0x3003;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_1, power_mgnt_reg_1);
/* Enable HPOUT1 (Left) and HPOUT1 (Right) intermediate stages */
tmp = 0x0022;
counter += CODEC_IO_Write(DeviceAddr, WM8994_ANALOG_HP, tmp);
/* Enable Charge Pump */
tmp = 0x9F25;
counter += CODEC_IO_Write(DeviceAddr, WM8994_CHARGE_PUMP1, tmp);
/* Add Delay */
AUDIO_IO_Delay(15);
/* Select DAC1 (Left) to Left Headphone Output PGA (HPOUT1LVOL) path */
tmp = 0x0001;
counter += CODEC_IO_Write(DeviceAddr, WM8994_OUTPUT_MIXER_1, tmp);
/* Select DAC1 (Right) to Right Headphone Output PGA (HPOUT1RVOL) path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_OUTPUT_MIXER_2, tmp);
/* Enable Left Output Mixer (MIXOUTL), Enable Right Output Mixer (MIXOUTR) */
/* idem for SPKOUTL and SPKOUTR */
tmp = 0x0030 | 0x0300;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_3, tmp);
/* Enable DC Servo and trigger start-up mode on left and right channels */
tmp = 0x0033;
counter += CODEC_IO_Write(DeviceAddr, WM8994_DC_SERVO1, tmp);
/* Add Delay */
AUDIO_IO_Delay(257);
/* Enable HPOUT1 (Left) and HPOUT1 (Right) intermediate and output stages. Remove clamps */
tmp = 0x00EE;
counter += CODEC_IO_Write(DeviceAddr, WM8994_ANALOG_HP, tmp);
/* Unmutes */
/* Unmute DAC 1 (Left) */
tmp = 0x00C0;
counter += CODEC_IO_Write(DeviceAddr, WM8994_DAC1_LEFT_VOL, tmp);
/* Unmute DAC 1 (Right) */
counter += CODEC_IO_Write(DeviceAddr, WM8994_DAC1_RIGHT_VOL, tmp);
/* Unmute the AIF1 Timeslot 0 DAC path */
tmp = 0x0010;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_FILTER1, tmp);
/* Unmute DAC 2 (Left) */
tmp = 0x00C0;
counter += CODEC_IO_Write(DeviceAddr, WM8994_DAC2_LEFT_VOL, tmp);
/* Unmute DAC 2 (Right) */
counter += CODEC_IO_Write(DeviceAddr, WM8994_DAC2_RIGHT_VOL, tmp);
/* Unmute the AIF1 Timeslot 1 DAC2 path */
tmp = 0x0010;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_FILTER1, tmp);
/* Volume Control */
wm8994_SetVolume(DeviceAddr, Volume);
}
if (input_device > 0) /* Audio input selected */
{
if ((input_device == INPUT_DEVICE_DIGITAL_MICROPHONE_1) || (input_device == INPUT_DEVICE_DIGITAL_MICROPHONE_2))
{
/* Enable Microphone bias 1 generator, Enable VMID */
power_mgnt_reg_1 |= 0x0013;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_1, power_mgnt_reg_1);
/* ADC oversample enable */
tmp = 0x0002;
counter += CODEC_IO_Write(DeviceAddr, WM8994_OVERSAMPLING, tmp);
/* AIF ADC2 HPF enable, HPF cut = voice mode 1 fc=127Hz at fs=8kHz */
tmp = 0x3800;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC2_FILTERS, tmp);
}
else if(input_device == INPUT_DEVICE_DIGITAL_MIC1_MIC2)
{
/* Enable Microphone bias 1 generator, Enable VMID */
power_mgnt_reg_1 |= 0x0013;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_1, power_mgnt_reg_1);
/* ADC oversample enable */
tmp = 0x0002;
counter += CODEC_IO_Write(DeviceAddr, WM8994_OVERSAMPLING, tmp);
/* AIF ADC1 HPF enable, HPF cut = voice mode 1 fc=127Hz at fs=8kHz */
tmp = 0x1800;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC1_FILTERS, tmp);
/* AIF ADC2 HPF enable, HPF cut = voice mode 1 fc=127Hz at fs=8kHz */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC2_FILTERS, tmp);
}
else if ((input_device == INPUT_DEVICE_INPUT_LINE_1) || (input_device == INPUT_DEVICE_INPUT_LINE_2))
{
/* Disable mute on IN1L, IN1L Volume = +0dB */
tmp = 0x000B;
counter += CODEC_IO_Write(DeviceAddr, WM8994_LEFT_LINE_IN12_VOL, tmp);
/* Disable mute on IN1R, IN1R Volume = +0dB */
counter += CODEC_IO_Write(DeviceAddr, WM8994_RIGHT_LINE_IN12_VOL, tmp);
/* AIF ADC1 HPF enable, HPF cut = hifi mode fc=4Hz at fs=48kHz */
tmp = 0x1800;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC1_FILTERS, tmp);
}
/* Volume Control */
wm8994_SetVolume(DeviceAddr, Volume);
}
/* Return communication control value */
return counter;
}
/**
* @brief Deinitializes the audio codec.
* @param None
* @retval None
*/
void wm8994_DeInit(void)
{
/* Deinitialize Audio Codec interface */
AUDIO_IO_DeInit();
}
/**
* @brief Get the WM8994 ID.
* @param DeviceAddr: Device address on communication Bus.
* @retval The WM8994 ID
*/
uint32_t wm8994_ReadID(uint16_t DeviceAddr)
{
/* Initialize the Control interface of the Audio Codec */
AUDIO_IO_Init();
return ((uint32_t)AUDIO_IO_Read(DeviceAddr, WM8994_CHIPID_ADDR));
}
/**
* @brief Start the audio Codec play feature.
* @note For this codec no Play options are required.
* @param DeviceAddr: Device address on communication Bus.
* @retval 0 if correct communication, else wrong communication
*/
uint32_t wm8994_Play(uint16_t DeviceAddr, uint16_t* pBuffer, uint16_t Size)
{
uint32_t counter = 0;
/* Resumes the audio file playing */
/* Unmute the output first */
counter += wm8994_SetMute(DeviceAddr, AUDIO_MUTE_OFF);
return counter;
}
/**
* @brief Pauses playing on the audio codec.
* @param DeviceAddr: Device address on communication Bus.
* @retval 0 if correct communication, else wrong communication
*/
uint32_t wm8994_Pause(uint16_t DeviceAddr)
{
uint32_t counter = 0;
uint16_t tmp;
/* Pause the audio file playing */
/* Mute the output first */
counter += wm8994_SetMute(DeviceAddr, AUDIO_MUTE_ON);
/* Put the Codec in Power save mode */
tmp = 0x01;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_2, tmp);
return counter;
}
/**
* @brief Resumes playing on the audio codec.
* @param DeviceAddr: Device address on communication Bus.
* @retval 0 if correct communication, else wrong communication
*/
uint32_t wm8994_Resume(uint16_t DeviceAddr)
{
uint32_t counter = 0;
/* Resumes the audio file playing */
/* Unmute the output first */
counter += wm8994_SetMute(DeviceAddr, AUDIO_MUTE_OFF);
return counter;
}
/**
* @brief Stops audio Codec playing. It powers down the codec.
* @param DeviceAddr: Device address on communication Bus.
* @param CodecPdwnMode: selects the power down mode.
* - CODEC_PDWN_SW: only mutes the audio codec. When resuming from this
* mode the codec keeps the previous initialization
* (no need to re-Initialize the codec registers).
* - CODEC_PDWN_HW: Physically power down the codec. When resuming from this
* mode, the codec is set to default configuration
* (user should re-Initialize the codec in order to
* play again the audio stream).
* @retval 0 if correct communication, else wrong communication
*/
uint32_t wm8994_Stop(uint16_t DeviceAddr, uint32_t CodecPdwnMode)
{
uint32_t counter = 0;
uint16_t tmp;
if (outputEnabled != 0)
{
/* Mute the output first */
counter += wm8994_SetMute(DeviceAddr, AUDIO_MUTE_ON);
if (CodecPdwnMode == CODEC_PDWN_SW)
{
/* Only output mute required*/
}
else /* CODEC_PDWN_HW */
{
/* Mute the AIF1 Timeslot 0 DAC1 path */
tmp = 0x0200;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_FILTER1, tmp);
/* Mute the AIF1 Timeslot 1 DAC2 path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_FILTER1, tmp);
/* Disable DAC1L_TO_HPOUT1L */
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_OUTPUT_MIXER_1, tmp);
/* Disable DAC1R_TO_HPOUT1R */
counter += CODEC_IO_Write(DeviceAddr, WM8994_OUTPUT_MIXER_2, tmp);
/* Disable DAC1 and DAC2 */
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_5, tmp);
/* Reset Codec by writing in 0x0000 address register */
counter += CODEC_IO_Write(DeviceAddr, WM8994_SW_RESET, tmp);
outputEnabled = 0;
}
}
return counter;
}
/**
* @brief Sets higher or lower the codec volume level.
* @param DeviceAddr: Device address on communication Bus.
* @param Volume: a byte value from 0 to 255 (refer to codec registers
* description for more details).
* @retval 0 if correct communication, else wrong communication
*/
uint32_t wm8994_SetVolume(uint16_t DeviceAddr, uint8_t Volume)
{
uint32_t counter = 0;
uint8_t convertedvol = VOLUME_CONVERT(Volume);
uint16_t tmp;
/* Output volume */
if (outputEnabled != 0)
{
if(convertedvol > 0x3E)
{
/* Unmute audio codec */
counter += wm8994_SetMute(DeviceAddr, AUDIO_MUTE_OFF);
/* Left Headphone Volume */
tmp = 0x3F | 0x140;
counter += CODEC_IO_Write(DeviceAddr, WM8994_LEFT_OUTPUT_VOL, tmp);
/* Right Headphone Volume */
counter += CODEC_IO_Write(DeviceAddr, WM8994_RIGHT_OUTPUT_VOL, tmp);
/* Left Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, WM8994_SPK_LEFT_VOL, tmp);
/* Right Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, WM8994_SPK_RIGHT_VOL, tmp);
}
else if (Volume == 0)
{
/* Mute audio codec */
counter += wm8994_SetMute(DeviceAddr, AUDIO_MUTE_ON);
}
else
{
/* Unmute audio codec */
counter += wm8994_SetMute(DeviceAddr, AUDIO_MUTE_OFF);
/* Left Headphone Volume */
tmp = convertedvol | 0x140;
counter += CODEC_IO_Write(DeviceAddr, WM8994_LEFT_OUTPUT_VOL, tmp);
/* Right Headphone Volume */
counter += CODEC_IO_Write(DeviceAddr, WM8994_RIGHT_OUTPUT_VOL, tmp);
/* Left Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, WM8994_SPK_LEFT_VOL, tmp);
/* Right Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, WM8994_SPK_RIGHT_VOL, tmp);
}
}
/* Input volume */
if (inputEnabled != 0)
{
convertedvol = VOLUME_IN_CONVERT(Volume);
/* Left AIF1 ADC1 volume */
tmp = convertedvol | 0x100;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC1_LEFT_VOL, tmp);
/* Right AIF1 ADC1 volume */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC1_RIGHT_VOL, tmp);
/* Left AIF1 ADC2 volume */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC2_LEFT_VOL, tmp);
/* Right AIF1 ADC2 volume */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_ADC2_RIGHT_VOL, tmp);
}
return counter;
}
/**
* @brief Enables or disables the mute feature on the audio codec.
* @param DeviceAddr: Device address on communication Bus.
* @param Cmd: AUDIO_MUTE_ON to enable the mute or AUDIO_MUTE_OFF to disable the
* mute mode.
* @retval 0 if correct communication, else wrong communication
*/
uint32_t wm8994_SetMute(uint16_t DeviceAddr, uint32_t Cmd)
{
uint32_t counter = 0;
uint16_t tmp;
if (outputEnabled != 0)
{
/* Set the Mute mode */
if(Cmd == AUDIO_MUTE_ON)
{
/* Soft Mute the AIF1 Timeslot 0 DAC1 path L&R */
tmp = 0x0200;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_FILTER1, tmp);
/* Soft Mute the AIF1 Timeslot 1 DAC2 path L&R */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_FILTER1, tmp);
}
else /* AUDIO_MUTE_OFF Disable the Mute */
{
/* Unmute the AIF1 Timeslot 0 DAC1 path L&R */
tmp = 0x0010;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_FILTER1, tmp);
/* Unmute the AIF1 Timeslot 1 DAC2 path L&R */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_FILTER1, tmp);
}
}
return counter;
}
/**
* @brief Switch dynamically (while audio file is played) the output target
* (speaker or headphone).
* @param DeviceAddr: Device address on communication Bus.
* @param Output: specifies the audio output target: OUTPUT_DEVICE_SPEAKER,
* OUTPUT_DEVICE_HEADPHONE, OUTPUT_DEVICE_BOTH or OUTPUT_DEVICE_AUTO
* @retval 0 if correct communication, else wrong communication
*/
uint32_t wm8994_SetOutputMode(uint16_t DeviceAddr, uint8_t Output)
{
uint32_t counter = 0;
uint16_t tmp;
switch (Output)
{
case OUTPUT_DEVICE_SPEAKER:
/* Enable DAC1 (Left), Enable DAC1 (Right),
Disable DAC2 (Left), Disable DAC2 (Right)*/
tmp = 0x0C0C;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_5, tmp);
/* Enable the AIF1 Timeslot 0 (Left) to DAC 1 (Left) mixer path */
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_LMR, tmp);
/* Enable the AIF1 Timeslot 0 (Right) to DAC 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_RMR, tmp);
/* Disable the AIF1 Timeslot 1 (Left) to DAC 2 (Left) mixer path */
tmp = 0x0002;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_LMR, tmp);
/* Disable the AIF1 Timeslot 1 (Right) to DAC 2 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_RMR, tmp);
break;
case OUTPUT_DEVICE_HEADPHONE:
/* Disable DAC1 (Left), Disable DAC1 (Right),
Enable DAC2 (Left), Enable DAC2 (Right)*/
tmp = 0x0303;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_5, tmp);
/* Enable the AIF1 Timeslot 0 (Left) to DAC 1 (Left) mixer path */
tmp = 0x0001;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_LMR, tmp);
/* Enable the AIF1 Timeslot 0 (Right) to DAC 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_RMR, tmp);
/* Disable the AIF1 Timeslot 1 (Left) to DAC 2 (Left) mixer path */
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_LMR, tmp);
/* Disable the AIF1 Timeslot 1 (Right) to DAC 2 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_RMR, tmp);
break;
case OUTPUT_DEVICE_BOTH:
/* Enable DAC1 (Left), Enable DAC1 (Right),
also Enable DAC2 (Left), Enable DAC2 (Right)*/
tmp = 0x0303 | 0x0C0C;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_5, tmp);
/* Enable the AIF1 Timeslot 0 (Left) to DAC 1 (Left) mixer path */
tmp = 0x0001;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_LMR, tmp);
/* Enable the AIF1 Timeslot 0 (Right) to DAC 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_RMR, tmp);
/* Enable the AIF1 Timeslot 1 (Left) to DAC 2 (Left) mixer path */
tmp = 0x0002;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_LMR, tmp);
/* Enable the AIF1 Timeslot 1 (Right) to DAC 2 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_RMR, tmp);
break;
default:
/* Disable DAC1 (Left), Disable DAC1 (Right),
Enable DAC2 (Left), Enable DAC2 (Right)*/
tmp = 0x0303;
counter += CODEC_IO_Write(DeviceAddr, WM8994_PWR_MANAGEMENT_5, tmp);
/* Enable the AIF1 Timeslot 0 (Left) to DAC 1 (Left) mixer path */
tmp = 0x0001;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_LMR, tmp);
/* Enable the AIF1 Timeslot 0 (Right) to DAC 1 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC1_RMR, tmp);
/* Disable the AIF1 Timeslot 1 (Left) to DAC 2 (Left) mixer path */
tmp = 0x0000;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_LMR, tmp);
/* Disable the AIF1 Timeslot 1 (Right) to DAC 2 (Right) mixer path */
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_DAC2_RMR, tmp);
break;
}
return counter;
}
/**
* @brief Sets new frequency.
* @param DeviceAddr: Device address on communication Bus.
* @param AudioFreq: Audio frequency used to play the audio stream.
* @retval 0 if correct communication, else wrong communication
*/
uint32_t wm8994_SetFrequency(uint16_t DeviceAddr, uint32_t AudioFreq)
{
uint32_t counter = 0;
uint16_t tmp;
/* Clock Configurations */
switch (AudioFreq)
{
case AUDIO_FREQUENCY_8K:
/* AIF1 Sample Rate = 8 (KHz), ratio=256 */
tmp = 0x0003;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_16K:
/* AIF1 Sample Rate = 16 (KHz), ratio=256 */
tmp = 0x0033;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_32K:
/* AIF1 Sample Rate = 32 (KHz), ratio=256 */
tmp = 0x0063;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_48K:
/* AIF1 Sample Rate = 48 (KHz), ratio=256 */
tmp = 0x0083;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_96K:
/* AIF1 Sample Rate = 96 (KHz), ratio=256 */
tmp = 0x00A3;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_11K:
/* AIF1 Sample Rate = 11.025 (KHz), ratio=256 */
tmp = 0x0013;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_22K:
/* AIF1 Sample Rate = 22.050 (KHz), ratio=256 */
tmp = 0x0043;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
case AUDIO_FREQUENCY_44K:
/* AIF1 Sample Rate = 44.1 (KHz), ratio=256 */
tmp = 0x0073;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
default:
/* AIF1 Sample Rate = 48 (KHz), ratio=256 */
tmp = 0x0083;
counter += CODEC_IO_Write(DeviceAddr, WM8994_AIF1_RATE, tmp);
break;
}
return counter;
}
/**
* @brief Resets wm8994 registers.
* @param DeviceAddr: Device address on communication Bus.
* @retval 0 if correct communication, else wrong communication
*/
uint32_t wm8994_Reset(uint16_t DeviceAddr)
{
uint32_t counter = 0;
uint16_t tmp;
/* Reset Codec by writing in 0x0000 address register */
tmp = 0x0000;
counter = CODEC_IO_Write(DeviceAddr, WM8994_SW_RESET, tmp);
outputEnabled = 0;
inputEnabled=0;
return counter;
}
/**
* @brief Writes/Read a single data.
* @param Addr: I2C address
* @param Reg: Reg address
* @param Value: Data to be written
* @retval None
*/
static uint8_t CODEC_IO_Write(uint8_t Addr, uint16_t Reg, uint16_t Value)
{
uint32_t result = 0;
AUDIO_IO_Write(Addr, Reg, Value);
#ifdef VERIFY_WRITTENDATA
/* Verify that the data has been correctly written */
result = (AUDIO_IO_Read(Addr, Reg) == Value)? 0:1;
#endif /* VERIFY_WRITTENDATA */
return result;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
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