//{{{
uint32_t wm8994_SetVolume (uint16_t DeviceAddr, uint8_t Volume) {
uint32_t counter = 0;
uint8_t convertedvol = VOLUME_CONVERT(Volume);
/* Output volume */
if (outputEnabled != 0) {
if (convertedvol > 0x3E) {
/* Unmute audio codec */
counter += wm8994_SetMute(DeviceAddr, AUDIO_MUTE_OFF);
/* Left Headphone Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x1C, 0x3F | 0x140);
/* Right Headphone Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x1D, 0x3F | 0x140);
/* Left Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x26, 0x3F | 0x140);
/* Right Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x27, 0x3F | 0x140);
}
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 */
counter += CODEC_IO_Write(DeviceAddr, 0x1C, convertedvol | 0x140);
/* Right Headphone Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x1D, convertedvol | 0x140);
/* Left Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x26, convertedvol | 0x140);
/* Right Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x27, convertedvol | 0x140);
}
}
/* Input volume */
if (inputEnabled != 0) {
convertedvol = VOLUME_IN_CONVERT(Volume);
/* Left AIF1 ADC1 volume */
counter += CODEC_IO_Write(DeviceAddr, 0x400, convertedvol | 0x100);
/* Right AIF1 ADC1 volume */
counter += CODEC_IO_Write(DeviceAddr, 0x401, convertedvol | 0x100);
/* Left AIF1 ADC2 volume */
counter += CODEC_IO_Write(DeviceAddr, 0x404, convertedvol | 0x100);
/* Right AIF1 ADC2 volume */
counter += CODEC_IO_Write(DeviceAddr, 0x405, convertedvol | 0x100);
}
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;
/* 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 */
counter += CODEC_IO_Write(DeviceAddr, 0x420, 0x0200);
/* Mute the AIF1 Timeslot 1 DAC2 path */
counter += CODEC_IO_Write(DeviceAddr, 0x422, 0x0200);
/* Disable DAC1L_TO_HPOUT1L */
counter += CODEC_IO_Write(DeviceAddr, 0x2D, 0x0000);
/* Disable DAC1R_TO_HPOUT1R */
counter += CODEC_IO_Write(DeviceAddr, 0x2E, 0x0000);
/* Disable DAC1 and DAC2 */
counter += CODEC_IO_Write(DeviceAddr, 0x05, 0x0000);
/* Reset Codec by wrinting in 0x0000 address register */
counter += CODEC_IO_Write(DeviceAddr, 0x0000, 0x0000);
}
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);
if(convertedvol > 0x3E)
{
/* Unmute audio codec */
counter += wm8994_SetMute(DeviceAddr, AUDIO_MUTE_OFF);
/* Left Headphone Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x1C, 0x3F | 0x140);
/* Right Headphone Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x1D, 0x3F | 0x140);
/* Left Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x26, 0x3F | 0x140);
/* Right Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x27, 0x3F | 0x140);
}
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 */
counter += CODEC_IO_Write(DeviceAddr, 0x1C, convertedvol | 0x140);
/* Right Headphone Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x1D, convertedvol | 0x140);
/* Left Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x26, convertedvol | 0x140);
/* Right Speaker Volume */
counter += CODEC_IO_Write(DeviceAddr, 0x27, convertedvol | 0x140);
}
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 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;
/* Pause the audio file playing */
/* Mute the output first */
counter += wm8994_SetMute(DeviceAddr, AUDIO_MUTE_ON);
/* Put the Codec in Power save mode */
counter += CODEC_IO_Write(DeviceAddr, 0x02, 0x01);
return counter;
}