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STM32L476G_EVAL BSP User Manual
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Functions | |
| static void | CODEC_Reset (void) |
| Resets the audio codec. | |
| static void | SAIx_MspInit (void) |
| Initializes SAI MSP. | |
| static void | SAIx_Init (uint32_t AudioFreq) |
| Initializes the Audio Codec audio interface (SAI). | |
| static void | DFSDMx_ChannelMspInit (DFSDM_Channel_HandleTypeDef *hdfsdm_channel) |
| Initializes the DFSDM channel MSP. | |
| static void | DFSDMx_FilterMspInit (DFSDM_Filter_HandleTypeDef *hdfsdm_filter) |
| Initializes the DFSDM filter MSP. | |
| static void | DFSDMx_ChannelMspDeInit (DFSDM_Channel_HandleTypeDef *hdfsdm_channel) |
| DeInitializes the DFSDM channel MSP. | |
| static void | DFSDMx_FilterMspDeInit (DFSDM_Filter_HandleTypeDef *hdfsdm_filter) |
| DeInitializes the DFSDM filter MSP. | |
| static uint8_t | DFSDMx_Init (uint32_t AudioFreq) |
| Initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM). | |
| static uint8_t | DFSDMx_DeInit (void) |
| De-initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM). | |
Function Documentation
| static void CODEC_Reset | ( | void | ) | [static] |
Resets the audio codec.
It restores the default configuration of the codec (this function shall be called before initializing the codec).
- Return values:
-
None
Definition at line 862 of file stm32l476g_eval_audio.c.
References audio_drv, and AUDIO_I2C_ADDRESS.
Referenced by BSP_AUDIO_OUT_Init().
| static void DFSDMx_ChannelMspDeInit | ( | DFSDM_Channel_HandleTypeDef * | hdfsdm_channel | ) | [static] |
DeInitializes the DFSDM channel MSP.
- Parameters:
-
hdfsdm_channel : DFSDM channel handle.
- Return values:
-
None
Definition at line 1511 of file stm32l476g_eval_audio.c.
References AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_PORT, AUDIO_DFSDMx_CKOUT_PIN, and AUDIO_DFSDMx_DMIC_DATIN_PIN.
Referenced by DFSDMx_DeInit().
| static void DFSDMx_ChannelMspInit | ( | DFSDM_Channel_HandleTypeDef * | hdfsdm_channel | ) | [static] |
Initializes the DFSDM channel MSP.
- Parameters:
-
hdfsdm_channel : DFSDM channel handle.
- Return values:
-
None
Definition at line 1487 of file stm32l476g_eval_audio.c.
References AUDIO_DFSDMx_CKOUT_DMIC_DATIN_AF, AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_CLK_ENABLE, AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_PORT, AUDIO_DFSDMx_CKOUT_PIN, AUDIO_DFSDMx_CLK_ENABLE, and AUDIO_DFSDMx_DMIC_DATIN_PIN.
Referenced by DFSDMx_Init().
| static uint8_t DFSDMx_DeInit | ( | void | ) | [static] |
De-initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
- Return values:
-
AUDIO_OK if correct communication, else wrong communication
Definition at line 1449 of file stm32l476g_eval_audio.c.
References AUDIO_ERROR, AUDIO_OK, DFSDMx_ChannelMspDeInit(), DFSDMx_FilterMspDeInit(), haudio_in_dfsdm_leftchannel, haudio_in_dfsdm_leftfilter, haudio_in_dfsdm_rightchannel, and haudio_in_dfsdm_rightfilter.
Referenced by BSP_AUDIO_IN_DeInit(), and BSP_AUDIO_IN_SetFrequency().
| static void DFSDMx_FilterMspDeInit | ( | DFSDM_Filter_HandleTypeDef * | hdfsdm_filter | ) | [static] |
DeInitializes the DFSDM filter MSP.
- Parameters:
-
hdfsdm_filter : DFSDM filter handle.
- Return values:
-
None
Definition at line 1590 of file stm32l476g_eval_audio.c.
References AUDIO_DFSDMx_LEFT_FILTER, hdma_dfsdm_left, and hdma_dfsdm_right.
Referenced by DFSDMx_DeInit().
| static void DFSDMx_FilterMspInit | ( | DFSDM_Filter_HandleTypeDef * | hdfsdm_filter | ) | [static] |
Initializes the DFSDM filter MSP.
- Parameters:
-
hdfsdm_filter : DFSDM filter handle.
- Return values:
-
None
Definition at line 1525 of file stm32l476g_eval_audio.c.
References AUDIO_DFSDMx_CLK_ENABLE, AUDIO_DFSDMx_DMAx_CLK_ENABLE, AUDIO_DFSDMx_DMAx_LEFT_CHANNEL, AUDIO_DFSDMx_DMAx_LEFT_IRQ, AUDIO_DFSDMx_DMAx_MEM_DATA_SIZE, AUDIO_DFSDMx_DMAx_PERIPH_DATA_SIZE, AUDIO_DFSDMx_DMAx_RIGHT_CHANNEL, AUDIO_DFSDMx_DMAx_RIGHT_IRQ, AUDIO_DFSDMx_LEFT_FILTER, AUDIO_OUT_IRQ_PREPRIO, hdma_dfsdm_left, and hdma_dfsdm_right.
Referenced by DFSDMx_Init().
| static uint8_t DFSDMx_Init | ( | uint32_t | AudioFreq | ) | [static] |
Initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
- Parameters:
-
AudioFreq,: Audio frequency to be used to set correctly the DFSDM peripheral.
- Return values:
-
AUDIO_OK if correct communication, else wrong communication
Definition at line 1317 of file stm32l476g_eval_audio.c.
References AUDIO_DFSDMx_LEFT_FILTER, AUDIO_DFSDMx_RIGHT_FILTER, AUDIO_ERROR, AUDIO_OK, DFSDMClockDivider, DFSDMFilterOrder, DFSDMOverSampling, DFSDMRightBitShift, DFSDMx_ChannelMspInit(), DFSDMx_FilterMspInit(), haudio_in_dfsdm_leftchannel, haudio_in_dfsdm_leftfilter, haudio_in_dfsdm_rightchannel, and haudio_in_dfsdm_rightfilter.
Referenced by BSP_AUDIO_IN_Init(), and BSP_AUDIO_IN_SetFrequency().
| static void SAIx_Init | ( | uint32_t | AudioFreq | ) | [static] |
Initializes the Audio Codec audio interface (SAI).
- Parameters:
-
AudioFreq,: Audio frequency to be configured for the SAI peripheral.
- Note:
- The default SlotActive configuration is set to CODEC_AUDIOFRAME_SLOT_0123 and user can update this configuration using
- Return values:
-
None
Definition at line 802 of file stm32l476g_eval_audio.c.
References AUDIO_SAIx, CODEC_AUDIOFRAME_SLOT_0123, haudio_out_sai, SAIClockDivider, and SAIx_MspInit().
Referenced by BSP_AUDIO_OUT_Init().
| static void SAIx_MspInit | ( | void | ) | [static] |
Initializes SAI MSP.
- Return values:
-
None
Definition at line 743 of file stm32l476g_eval_audio.c.
References AUDIO_OUT_IRQ_PREPRIO, AUDIO_SAIx, AUDIO_SAIx_CLK_ENABLE, AUDIO_SAIx_DMAx_CHANNEL, AUDIO_SAIx_DMAx_CLK_ENABLE, AUDIO_SAIx_DMAx_IRQ, AUDIO_SAIx_DMAx_MEM_DATA_SIZE, AUDIO_SAIx_DMAx_PERIPH_DATA_SIZE, AUDIO_SAIx_FSB_PIN, AUDIO_SAIx_MCKB_PIN, AUDIO_SAIx_MCKB_SCKB_SDB_FSB_AF, AUDIO_SAIx_MCKB_SCKB_SDB_FSB_ENABLE, AUDIO_SAIx_MCKB_SCKB_SDB_FSB_GPIO_PORT, AUDIO_SAIx_SCKB_PIN, AUDIO_SAIx_SDB_PIN, and haudio_out_sai.
Referenced by SAIx_Init().
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