STM32746G-Discovery board drivers V1.0.0
Dependents: F746_SD_GraphicEqualizer_ren0620
Fork of BSP_DISCO_F746NG by
Functions | |
uint32_t | wm8994_Init (uint16_t DeviceAddr, uint16_t OutputInputDevice, uint8_t Volume, uint32_t AudioFreq) |
Initializes the audio codec and the control interface. | |
void | wm8994_DeInit (void) |
Deinitializes the audio codec. | |
uint32_t | wm8994_ReadID (uint16_t DeviceAddr) |
Get the WM8994 ID. | |
uint32_t | wm8994_Play (uint16_t DeviceAddr, uint16_t *pBuffer, uint16_t Size) |
Start the audio Codec play feature. | |
uint32_t | wm8994_Pause (uint16_t DeviceAddr) |
Pauses playing on the audio codec. | |
uint32_t | wm8994_Resume (uint16_t DeviceAddr) |
Resumes playing on the audio codec. | |
uint32_t | wm8994_Stop (uint16_t DeviceAddr, uint32_t Cmd) |
Stops audio Codec playing. | |
uint32_t | wm8994_SetVolume (uint16_t DeviceAddr, uint8_t Volume) |
Sets higher or lower the codec volume level. | |
uint32_t | wm8994_SetMute (uint16_t DeviceAddr, uint32_t Cmd) |
Enables or disables the mute feature on the audio codec. | |
uint32_t | wm8994_SetOutputMode (uint16_t DeviceAddr, uint8_t Output) |
Switch dynamically (while audio file is played) the output target (speaker or headphone). | |
uint32_t | wm8994_SetFrequency (uint16_t DeviceAddr, uint32_t AudioFreq) |
Sets new frequency. | |
uint32_t | wm8994_Reset (uint16_t DeviceAddr) |
Resets wm8994 registers. | |
void | AUDIO_IO_Init (void) |
Initializes Audio low level. | |
void | AUDIO_IO_DeInit (void) |
Deinitializes Audio low level. | |
void | AUDIO_IO_Write (uint8_t Addr, uint16_t Reg, uint16_t Value) |
Writes a single data. | |
uint8_t | AUDIO_IO_Read (uint8_t Addr, uint16_t Reg) |
Reads a single data. | |
void | AUDIO_IO_Delay (uint32_t Delay) |
AUDIO Codec delay. |
Function Documentation
void AUDIO_IO_DeInit | ( | void | ) |
Deinitializes Audio low level.
- Return values:
-
None
Definition at line 686 of file stm32746g_discovery.c.
void AUDIO_IO_Delay | ( | uint32_t | Delay ) |
AUDIO Codec delay.
- Parameters:
-
Delay,: Delay in ms
- Return values:
-
None
Definition at line 734 of file stm32746g_discovery.c.
void AUDIO_IO_Init | ( | void | ) |
Initializes Audio low level.
- Return values:
-
None
Definition at line 677 of file stm32746g_discovery.c.
uint8_t AUDIO_IO_Read | ( | uint8_t | Addr, |
uint16_t | Reg | ||
) |
Reads a single data.
- Parameters:
-
Addr,: I2C address Reg,: Reg address
- Return values:
-
Data to be read
Definition at line 714 of file stm32746g_discovery.c.
void AUDIO_IO_Write | ( | uint8_t | Addr, |
uint16_t | Reg, | ||
uint16_t | Value | ||
) |
Writes a single data.
- Parameters:
-
Addr,: I2C address Reg,: Reg address Value,: Data to be written
- Return values:
-
None
Definition at line 697 of file stm32746g_discovery.c.
void wm8994_DeInit | ( | void | ) |
uint32_t wm8994_Init | ( | uint16_t | DeviceAddr, |
uint16_t | OutputInputDevice, | ||
uint8_t | Volume, | ||
uint32_t | AudioFreq | ||
) |
Initializes the audio codec and the control interface.
- Parameters:
-
DeviceAddr,: Device address on communication Bus. 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_INPUT_LINE_1 or INPUT_DEVICE_INPUT_LINE_2. Volume,: Initial volume level (from 0 (Mute) to 100 (Max)) AudioFreq,: Audio Frequency
- Return values:
-
0 if correct communication, else wrong communication
uint32_t wm8994_Pause | ( | uint16_t | DeviceAddr ) |
uint32_t wm8994_Play | ( | uint16_t | DeviceAddr, |
uint16_t * | pBuffer, | ||
uint16_t | Size | ||
) |
uint32_t wm8994_ReadID | ( | uint16_t | DeviceAddr ) |
uint32_t wm8994_Reset | ( | uint16_t | DeviceAddr ) |
uint32_t wm8994_Resume | ( | uint16_t | DeviceAddr ) |
uint32_t wm8994_SetFrequency | ( | uint16_t | DeviceAddr, |
uint32_t | AudioFreq | ||
) |
uint32_t wm8994_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
uint32_t wm8994_SetOutputMode | ( | uint16_t | DeviceAddr, |
uint8_t | Output | ||
) |
Switch dynamically (while audio file is played) the output target (speaker or headphone).
- 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
uint32_t wm8994_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
uint32_t wm8994_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_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).
- Return values:
-
0 if correct communication, else wrong communication
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