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CS43L22_Exported_Functions
uint32_t cs43l22_Init (uint16_t DeviceAddr, uint16_t OutputDevice, uint8_t Volume, uint32_t AudioFreq) Initializes the audio codec and the control interface. void cs43l22_DeInit (void) Deinitializes the audio codec. uint32_t cs43l22_ReadID (uint16_t DeviceAddr) Get the CS43L22 ID. uint32_t cs43l22_Play (uint16_t DeviceAddr, uint16_t *pBuffer, uint16_t Size) Start the audio Codec play feature. uint32_t cs43l22_Pause (uint16_t DeviceAddr) Pauses playing on the audio codec. uint32_t cs43l22_Resume (uint16_t DeviceAddr) Resumes playing on the audio codec. uint32_t cs43l22_Stop (uint16_t DeviceAddr, uint32_t Cmd) Stops audio Codec playing. uint32_t cs43l22_SetVolume (uint16_t DeviceAddr, uint8_t Volume) Sets higher or lower the codec volume level. uint32_t cs43l22_SetFrequency (uint16_t DeviceAddr, uint32_t AudioFreq) Sets new frequency. uint32_t cs43l22_SetMute (uint16_t DeviceAddr, uint32_t Cmd) Enables or disables the mute feature on the audio codec. uint32_t cs43l22_SetOutputMode (uint16_t DeviceAddr, uint8_t Output) Switch dynamically (while audio file is played) the output target (speaker or headphone). uint32_t cs43l22_Reset (uint16_t DeviceAddr) Resets cs43l22 registers. void AUDIO_IO_Init (void) Initializes Audio low level. void AUDIO_IO_DeInit (void) DeInitializes Audio low level.
Function Documentation
void AUDIO_IO_DeInit
(
void
)
void AUDIO_IO_Init
(
void
)
void cs43l22_DeInit
(
void
)
Deinitializes the audio codec.
Parameters:
Return values:
Definition at line 217 of file cs43l22.c .
uint32_t cs43l22_Init
(
uint16_t
DeviceAddr ,
uint16_t
OutputDevice ,
uint8_t
Volume ,
uint32_t
AudioFreq
)
Initializes the audio codec and the control interface.
Parameters:
DeviceAddr,: Device address on communication Bus. OutputDevice,: can be OUTPUT_DEVICE_SPEAKER, OUTPUT_DEVICE_HEADPHONE, OUTPUT_DEVICE_BOTH or OUTPUT_DEVICE_AUTO . Volume,: Initial volume level (from 0 (Mute) to 100 (Max))
Return values:
0 if correct communication, else wrong communication
Definition at line 133 of file cs43l22.c .
uint32_t cs43l22_Pause
(
uint16_t
DeviceAddr )
Pauses playing on the audio codec.
Parameters:
DeviceAddr,: Device address on communication Bus.
Return values:
0 if correct communication, else wrong communication
Definition at line 272 of file cs43l22.c .
uint32_t cs43l22_Play
(
uint16_t
DeviceAddr ,
uint16_t *
pBuffer ,
uint16_t
Size
)
Start the audio Codec play feature.
Note: For this codec no Play options are required. Parameters:
DeviceAddr,: Device address on communication Bus.
Return values:
0 if correct communication, else wrong communication
Definition at line 246 of file cs43l22.c .
uint32_t cs43l22_ReadID
(
uint16_t
DeviceAddr )
Get the CS43L22 ID.
Parameters:
DeviceAddr,: Device address on communication Bus.
Return values:
Definition at line 228 of file cs43l22.c .
uint32_t cs43l22_Reset
(
uint16_t
DeviceAddr )
Resets cs43l22 registers.
Parameters:
DeviceAddr,: Device address on communication Bus.
Return values:
0 if correct communication, else wrong communication
Definition at line 451 of file cs43l22.c .
uint32_t cs43l22_Resume
(
uint16_t
DeviceAddr )
Resumes playing on the audio codec.
Parameters:
DeviceAddr,: Device address on communication Bus.
Return values:
0 if correct communication, else wrong communication
Definition at line 291 of file cs43l22.c .
uint32_t cs43l22_SetFrequency
(
uint16_t
DeviceAddr ,
uint32_t
AudioFreq
)
Sets new frequency.
Parameters:
DeviceAddr,: Device address on communication Bus. AudioFreq,: Audio frequency used to play the audio stream.
Return values:
0 if correct communication, else wrong communication
Definition at line 371 of file cs43l22.c .
uint32_t cs43l22_SetMute
(
uint16_t
DeviceAddr ,
uint32_t
Cmd
)
Enables or disables the mute feature on the audio codec.
Parameters:
DeviceAddr,: Device address on communication Bus. Cmd,: AUDIO_MUTE_ON to enable the mute or AUDIO_MUTE_OFF to disable the mute mode.
Return values:
0 if correct communication, else wrong communication
Definition at line 383 of file cs43l22.c .
uint32_t cs43l22_SetOutputMode
(
uint16_t
DeviceAddr ,
uint8_t
Output
)
Switch dynamically (while audio file is played) the output target (speaker or headphone).
Note: This function modifies a global variable of the audio codec driver: OutputDev. Parameters:
DeviceAddr,: Device address on communication Bus. Output,: specifies the audio output target: OUTPUT_DEVICE_SPEAKER, OUTPUT_DEVICE_HEADPHONE, OUTPUT_DEVICE_BOTH or OUTPUT_DEVICE_AUTO
Return values:
0 if correct communication, else wrong communication
Definition at line 412 of file cs43l22.c .
uint32_t cs43l22_SetVolume
(
uint16_t
DeviceAddr ,
uint8_t
Volume
)
Sets higher or lower the codec volume level.
Parameters:
DeviceAddr,: Device address on communication Bus. Volume,: a byte value from 0 to 255 (refer to codec registers description for more details).
Return values:
0 if correct communication, else wrong communication
Definition at line 344 of file cs43l22.c .
uint32_t cs43l22_Stop
(
uint16_t
DeviceAddr ,
uint32_t
CodecPdwnMode
)
Stops audio Codec playing.
It powers down the codec.
Parameters:
DeviceAddr,: Device address on communication Bus. CodecPdwnMode,: selects the power down mode.
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).
Return values:
0 if correct communication, else wrong communication
Definition at line 319 of file cs43l22.c .
1.7.2