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stm32l562e_discovery_audio.c
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stm32l562e_discovery_audio.c
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/**
******************************************************************************
* @file stm32l562e_discovery_audio.c
* @author MCD Application Team
* @brief This file provides the Audio driver for the STM32L562E-DISCOVERY
* discovery board.
@verbatim
How To use this driver:
-----------------------
+ This driver supports STM32L5xx devices on STM32L562E-DISCOVERY (MB1373) board.
+ Call the function BSP_AUDIO_OUT_Init() for AUDIO OUT initialization:
Instance : Select the output instance. Can only be 0 (SAI).
AudioInit: Audio Out structure to select the following parameters.
- Device: Select the output device (headphone, speaker, ..).
- SampleRate: Select the output sample rate (8Khz .. 96Khz).
- BitsPerSample: Select the output resolution (16 or 32bits per sample).
- ChannelsNbr: Select the output channels number(1 for mono, 2 for stereo).
- Volume: Select the output volume(0% .. 100%).
This function configures all the hardware required for the audio application (codec, I2C, SAI,
GPIOs, DMA and interrupt if needed). This function returns BSP_ERROR_NONE if configuration is OK.
If the returned value is different from BSP_ERROR_NONE or the function is stuck then the communication with
the codec has failed (try to un-plug the power or reset device in this case).
User can update the SAI or the clock configurations by overriding the weak MX functions MX_SAI1_Init()
and MX_SAI1_ClockConfig().
User can override the default MSP configuration and register his own MSP callbacks (defined at application level)
by calling BSP_AUDIO_OUT_RegisterMspCallbacks() function.
User can restore the default MSP configuration by calling BSP_AUDIO_OUT_RegisterDefaultMspCallbacks().
To use these two functions, user has to enable USE_HAL_SAI_REGISTER_CALLBACKS within stm32l5xx_hal_conf.h file.
+ Call the function BSP_AUDIO_OUT_Play() to play audio stream:
Instance : Select the output instance. Can only be 0 (SAI).
pBuf: pointer to the audio data file address.
NbrOfBytes: Total size of the buffer to be sent in Bytes.
+ Call the function BSP_AUDIO_OUT_Pause() to pause playing.
+ Call the function BSP_AUDIO_OUT_Resume() to resume playing.
Note. After calling BSP_AUDIO_OUT_Pause() function for pause, only BSP_AUDIO_OUT_Resume() should be called
for resume (it is not allowed to call BSP_AUDIO_OUT_Play() in this case).
Note. This function should be called only when the audio file is played or paused (not stopped).
+ Call the function BSP_AUDIO_OUT_Stop() to stop playing.
+ Call the function BSP_AUDIO_OUT_Mute() to mute the player.
+ Call the function BSP_AUDIO_OUT_UnMute() to unmute the player.
+ Call the function BSP_AUDIO_OUT_IsMute() to get the mute state(BSP_AUDIO_MUTE_ENABLED or BSP_AUDIO_MUTE_DISABLED).
+ Call the function BSP_AUDIO_OUT_SetDevice() to update the AUDIO OUT device.
+ Call the function BSP_AUDIO_OUT_GetDevice() to get the AUDIO OUT device.
+ Call the function BSP_AUDIO_OUT_SetSampleRate() to update the AUDIO OUT sample rate.
+ Call the function BSP_AUDIO_OUT_GetSampleRate() to get the AUDIO OUT sample rate.
+ Call the function BSP_AUDIO_OUT_SetBitsPerSample() to update the AUDIO OUT resolution.
+ Call the function BSP_AUDIO_OUT_GetBitPerSample() to get the AUDIO OUT resolution.
+ Call the function BSP_AUDIO_OUT_SetChannelsNbr() to update the AUDIO OUT number of channels.
+ Call the function BSP_AUDIO_OUT_GetChannelsNbr() to get the AUDIO OUT number of channels.
+ Call the function BSP_AUDIO_OUT_SetVolume() to update the AUDIO OUT volume.
+ Call the function BSP_AUDIO_OUT_GetVolume() to get the AUDIO OUT volume.
+ Call the function BSP_AUDIO_OUT_GetState() to get the AUDIO OUT state.
+ BSP_AUDIO_OUT_SetDevice(), BSP_AUDIO_OUT_SetSampleRate(), BSP_AUDIO_OUT_SetBitsPerSample() and
BSP_AUDIO_OUT_SetChannelsNbr() cannot be called while the state is AUDIO_OUT_STATE_PLAYING.
+ For each mode, you may need to implement the relative callback functions into your code.
The Callback functions are named AUDIO_OUT_XXX_CallBack() and only their prototypes are declared in
the stm32l562e_discovery_audio.h file. (refer to the example for more details on the callbacks implementations).
+ Call the function BSP_AUDIO_IN_Init() for AUDIO IN initialization:
Instance : Select the input instance. Can be 0 (SAI) or 1 (DFSDM).
AudioInit: Audio In structure to select the following parameters.
- Device: Select the input device (analog, digital mic1, mic2, mic1 & mic2).
- SampleRate: Select the input sample rate (8Khz .. 96Khz).
- BitsPerSample: Select the input resolution (16 or 32bits per sample).
- ChannelsNbr: Select the input channels number(1 for mono, 2 for stereo).
- Volume: Select the input volume(0% .. 100%).
This function configures all the hardware required for the audio application (codec, I2C, SAI, DFSDM
GPIOs, DMA and interrupt if needed). This function returns BSP_ERROR_NONE if configuration is OK.
If the returned value is different from BSP_ERROR_NONE or the function is stuck then the communication with
the codec has failed (try to un-plug the power or reset device in this case).
User can update the DFSDM/SAI or the clock configurations by overriding the weak MX functions MX_SAI1_Init(),
MX_SAI1_ClockConfig(), MX_DFSDM1_Init() and MX_DFDSM1_ClockConfig()
User can override the default MSP configuration and register his own MSP callbacks (defined at application level)
by calling BSP_AUDIO_IN_RegisterMspCallbacks() function.
User can restore the default MSP configuration by calling BSP_AUDIO_IN_RegisterDefaultMspCallbacks().
To use these two functions, user have to enable USE_HAL_SAI_REGISTER_CALLBACKS and/or USE_HAL_DFSDM_REGISTER_CALLBACKS
within stm32l5xx_hal_conf.h file.
+ Call the function BSP_AUDIO_IN_Record() to record audio stream. The recorded data are stored to user buffer in raw
(L, R, L, R ...).
Instance : Select the input instance. Can be 0 (SAI) or 1 (DFSDM).
pBuf: pointer to user buffer.
NbrOfBytes: Total size of the buffer to be sent in Bytes.
+ Call the function BSP_AUDIO_IN_Pause() to pause recording.
+ Call the function BSP_AUDIO_IN_Resume() to resume recording.
+ Call the function BSP_AUDIO_IN_Stop() to stop recording.
+ Call the function BSP_AUDIO_IN_SetDevice() to update the AUDIO IN device.
+ Call the function BSP_AUDIO_IN_GetDevice() to get the AUDIO IN device.
+ Call the function BSP_AUDIO_IN_SetSampleRate() to update the AUDIO IN sample rate.
+ Call the function BSP_AUDIO_IN_GetSampleRate() to get the AUDIO IN sample rate.
+ Call the function BSP_AUDIO_IN_SetBitPerSample() to update the AUDIO IN resolution.
+ Call the function BSP_AUDIO_IN_GetBitPerSample() to get the AUDIO IN resolution.
+ Call the function BSP_AUDIO_IN_SetChannelsNbr() to update the AUDIO IN number of channels.
+ Call the function BSP_AUDIO_IN_GetChannelsNbr() to get the AUDIO IN number of channels.
+ Call the function BSP_AUDIO_IN_SetVolume() to update the AUDIO IN volume.
+ Call the function BSP_AUDIO_IN_GetVolume() to get the AUDIO IN volume.
+ Call the function BSP_AUDIO_IN_GetState() to get the AUDIO IN state.
+ For each mode, you may need to implement the relative callback functions into your code.
The Callback functions are named AUDIO_IN_XXX_CallBack() and only their prototypes are declared in
the stm32l562e_discovery_audio.h file (refer to the example for more details on the callbacks implementations).
+ The driver API and the callback functions are at the end of the stm32l562e_discovery_audio.h file.
Known Limitations:
------------------
1- If the TDM Format used to play in parallel 2 audio Stream (the first Stream is configured in codec SLOT0 and second
Stream in SLOT1) the Pause/Resume, volume and mute feature will control the both streams.
2- Parsing of audio file is not implemented (in order to determine audio file properties: Mono/Stereo, Data size,
File size, Audio Frequency, Audio Data header size ...). The configuration is fixed for the given audio file.
@endverbatim
******************************************************************************
* @attention
*
* Copyright (c) 2019 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 "stm32l562e_discovery_audio.h"
#include "stm32l562e_discovery_bus.h"
/** @addtogroup BSP
* @{
*/
/** @addtogroup STM32L562E-DK
* @{
*/
/** @defgroup STM32L562E-DK_AUDIO STM32L562E-DK AUDIO
* @{
*/
/** @defgroup STM32L562E-DK_AUDIO_Private_Macros STM32L562E-DK AUDIO Private Macros
* @{
*/
#define DFSDM_OVER_SAMPLING(__FREQUENCY__) \
((__FREQUENCY__) == (AUDIO_FREQUENCY_8K)) ? (256U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_11K)) ? (256U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_16K)) ? (128U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_22K)) ? (128U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_32K)) ? (64U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_44K)) ? (64U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_48K)) ? (32U) : (16U)
#define DFSDM_CLOCK_DIVIDER(__FREQUENCY__) \
((__FREQUENCY__) == (AUDIO_FREQUENCY_8K)) ? (24U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_11K)) ? (4U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_16K)) ? (24U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_22K)) ? (4U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_32K)) ? (24U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_44K)) ? (4U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_48K)) ? (32U) : (32U)
#define DFSDM_FILTER_ORDER(__FREQUENCY__) \
((__FREQUENCY__) == (AUDIO_FREQUENCY_8K)) ? (DFSDM_FILTER_SINC3_ORDER) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_11K)) ? (DFSDM_FILTER_SINC3_ORDER) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_16K)) ? (DFSDM_FILTER_SINC3_ORDER) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_22K)) ? (DFSDM_FILTER_SINC3_ORDER) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_32K)) ? (DFSDM_FILTER_SINC4_ORDER) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_44K)) ? (DFSDM_FILTER_SINC3_ORDER) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_48K)) ? (DFSDM_FILTER_SINC4_ORDER) : (DFSDM_FILTER_SINC5_ORDER)
#define DFSDM_MIC_BIT_SHIFT(__FREQUENCY__) \
((__FREQUENCY__) == (AUDIO_FREQUENCY_8K)) ? (5U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_11K)) ? (6U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_16K)) ? (3U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_22K)) ? (3U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_32K)) ? (6U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_44K)) ? (0U) \
: ((__FREQUENCY__) == (AUDIO_FREQUENCY_48K)) ? (2U) : (4U)
#define SaturaLH(N, L, H) (((N)<(L))?(L):(((N)>(H))?(H):(N)))
/**
* @}
*/
/** @defgroup STM32L562E-DK_AUDIO_Exported_Variables STM32L562E-DK AUDIO Exported Variables
* @{
*/
/* Audio in and out context */
AUDIO_OUT_Ctx_t Audio_Out_Ctx[AUDIO_OUT_INSTANCES_NBR] = {{AUDIO_OUT_HEADPHONE,
AUDIO_FREQUENCY_8K,
AUDIO_RESOLUTION_16b,
50U,
1U,
AUDIO_MUTE_DISABLED,
AUDIO_OUT_STATE_RESET}};
AUDIO_IN_Ctx_t Audio_In_Ctx[AUDIO_IN_INSTANCES_NBR] = {{AUDIO_IN_ANALOG_MIC,
AUDIO_FREQUENCY_8K,
AUDIO_RESOLUTION_16b,
1U,
NULL,
0U,
50U,
AUDIO_IN_STATE_RESET},
{AUDIO_IN_DIGITAL_MIC,
AUDIO_FREQUENCY_8K,
AUDIO_RESOLUTION_16b,
2U,
NULL,
0U,
50U,
AUDIO_IN_STATE_RESET}};
/* Audio component object */
void *Audio_CompObj = NULL;
/* Audio driver */
AUDIO_Drv_t *Audio_Drv = NULL;
/* Audio in and out SAI handles */
SAI_HandleTypeDef haudio_out_sai = {0};
SAI_HandleTypeDef haudio_in_sai = {0};
/* Audio in DFSDM handles */
DFSDM_Channel_HandleTypeDef haudio_in_dfsdm_channel = {0};
DFSDM_Filter_HandleTypeDef haudio_in_dfsdm_filter = {0};
/* Audio in DFSDM internal buffer */
int32_t Audio_DigMicRecBuff[BSP_AUDIO_IN_DEFAULT_BUFFER_SIZE];
/**
* @}
*/
/** @defgroup STM32L562E-DK_AUDIO_Private_Variables STM32L562E-DK AUDIO Private Variables
* @{
*/
/* Audio in and out DMA handles used by SAI */
static DMA_HandleTypeDef hDmaSaiTx, hDmaSaiRx;
/* Audio in DMA handle used by DFSDM */
static DMA_HandleTypeDef hDmaDfsdm;
#if ((USE_HAL_DFSDM_REGISTER_CALLBACKS == 1) || (USE_HAL_SAI_REGISTER_CALLBACKS == 1))
static uint32_t AudioOut_IsMspCbValid[AUDIO_OUT_INSTANCES_NBR] = {0};
static uint32_t AudioIn_IsMspCbValid[AUDIO_IN_INSTANCES_NBR] = {0, 0};
#endif
/**
* @}
*/
/** @defgroup STM32L562E-DK_AUDIO_Private_Function_Prototypes STM32L562E-DK AUDIO Private Function Prototypes
* @{
*/
static int32_t CS42L51_Probe(void);
static void CS42L51_PowerUp(void);
static void CS42L51_PowerDown(void);
static void SAI_MspInit(SAI_HandleTypeDef *hsai);
static void SAI_MspDeInit(SAI_HandleTypeDef *hsai);
#if (USE_HAL_SAI_REGISTER_CALLBACKS == 1)
static void SAI_TxCpltCallback(SAI_HandleTypeDef *hsai);
static void SAI_TxHalfCpltCallback(SAI_HandleTypeDef *hsai);
static void SAI_RxCpltCallback(SAI_HandleTypeDef *hsai);
static void SAI_RxHalfCpltCallback(SAI_HandleTypeDef *hsai);
static void SAI_ErrorCallback(SAI_HandleTypeDef *hsai);
#endif /* (USE_HAL_SAI_REGISTER_CALLBACKS == 1) */
static int32_t DFSDM_DeInit(DFSDM_Filter_HandleTypeDef *hDfsdmFilter, DFSDM_Channel_HandleTypeDef *hDfsdmChannel);
static void DFSDM_ChannelMspInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel);
static void DFSDM_ChannelMspDeInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel);
static void DFSDM_FilterMspInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
static void DFSDM_FilterMspDeInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
#if (USE_HAL_DFSDM_REGISTER_CALLBACKS == 1)
static void DFSDM_FilterRegConvCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
static void DFSDM_FilterRegConvHalfCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
static void DFSDM_FilterErrorCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
#endif /* (USE_HAL_SAI_REGISTER_CALLBACKS == 1) */
/**
* @}
*/
/** @addtogroup STM32L562E-DK_AUDIO_OUT_Exported_Functions
* @{
*/
/**
* @brief Initialize the audio out peripherals.
* @param Instance Audio out instance.
* @param AudioInit Audio out init structure.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_Init(uint32_t Instance, BSP_AUDIO_Init_t *AudioInit)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
else if ((Instance == 0U) && ((AudioInit->BitsPerSample == AUDIO_RESOLUTION_32b) || (AudioInit->BitsPerSample == AUDIO_RESOLUTION_8b)))
{
status = BSP_ERROR_FEATURE_NOT_SUPPORTED;
}
else if ((Instance == 0U) && (Audio_In_Ctx[0].State != AUDIO_IN_STATE_RESET) &&
((Audio_In_Ctx[0].SampleRate != AudioInit->SampleRate) || (Audio_In_Ctx[0].BitsPerSample != AudioInit->BitsPerSample)))
{
status = BSP_ERROR_FEATURE_NOT_SUPPORTED;
}
else if ((Instance == 0U) && (Audio_In_Ctx[1].State != AUDIO_IN_STATE_RESET) &&
(Audio_In_Ctx[1].SampleRate != AudioInit->SampleRate))
{
status = BSP_ERROR_FEATURE_NOT_SUPPORTED;
}
else if (Audio_Out_Ctx[Instance].State != AUDIO_OUT_STATE_RESET)
{
status = BSP_ERROR_BUSY;
}
else
{
/* Un-reset audio codec if not currently used by audio in instance 0 */
if (Audio_In_Ctx[0].State == AUDIO_IN_STATE_RESET)
{
CS42L51_PowerUp();
}
/* Fill audio out context structure */
Audio_Out_Ctx[Instance].Device = AudioInit->Device;
Audio_Out_Ctx[Instance].SampleRate = AudioInit->SampleRate;
Audio_Out_Ctx[Instance].BitsPerSample = AudioInit->BitsPerSample;
Audio_Out_Ctx[Instance].ChannelsNbr = AudioInit->ChannelsNbr;
Audio_Out_Ctx[Instance].Volume = AudioInit->Volume;
/* Probe the audio codec */
if (Audio_In_Ctx[0].State == AUDIO_IN_STATE_RESET)
{
if (CS42L51_Probe() != BSP_ERROR_NONE)
{
status = BSP_ERROR_COMPONENT_FAILURE;
}
}
if (status == BSP_ERROR_NONE)
{
/* Set SAI instance */
haudio_out_sai.Instance = SAI1_Block_A;
/* Configure the SAI PLL according to the requested audio frequency if not already done by other instances */
if ((Audio_In_Ctx[0].State == AUDIO_IN_STATE_RESET) && (Audio_In_Ctx[1].State == AUDIO_IN_STATE_RESET))
{
if (MX_SAI1_ClockConfig(&haudio_out_sai, AudioInit->SampleRate) != HAL_OK)
{
status = BSP_ERROR_CLOCK_FAILURE;
}
}
if (status == BSP_ERROR_NONE)
{
#if (USE_HAL_SAI_REGISTER_CALLBACKS == 0)
SAI_MspInit(&haudio_out_sai);
#else
/* Register the SAI MSP Callbacks */
if (AudioOut_IsMspCbValid[Instance] == 0U)
{
if (BSP_AUDIO_OUT_RegisterDefaultMspCallbacks(Instance) != BSP_ERROR_NONE)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
}
#endif /* (USE_HAL_SAI_REGISTER_CALLBACKS == 0) */
}
if (status == BSP_ERROR_NONE)
{
/* Prepare SAI peripheral initialization */
MX_SAI_InitTypeDef mxSaiInit;
mxSaiInit.AudioFrequency = AudioInit->SampleRate;
mxSaiInit.AudioMode = SAI_MODEMASTER_TX;
mxSaiInit.ClockStrobing = SAI_CLOCKSTROBING_FALLINGEDGE;
mxSaiInit.MonoStereoMode = (AudioInit->ChannelsNbr == 1U) ? SAI_MONOMODE : SAI_STEREOMODE;
if (AudioInit->BitsPerSample == AUDIO_RESOLUTION_24b)
{
mxSaiInit.DataSize = SAI_DATASIZE_24;
mxSaiInit.FrameLength = 64;
mxSaiInit.ActiveFrameLength = 32;
}
else
{
mxSaiInit.DataSize = SAI_DATASIZE_16;
mxSaiInit.FrameLength = 32;
mxSaiInit.ActiveFrameLength = 16;
}
mxSaiInit.OutputDrive = SAI_OUTPUTDRIVE_ENABLE;
mxSaiInit.Synchro = SAI_ASYNCHRONOUS;
mxSaiInit.SynchroExt = SAI_SYNCEXT_DISABLE;
mxSaiInit.SlotActive = SAI_SLOTACTIVE_0 | SAI_SLOTACTIVE_1;
/* SAI peripheral initialization */
if (MX_SAI1_Init(&haudio_out_sai, &mxSaiInit) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
#if (USE_HAL_SAI_REGISTER_CALLBACKS == 1)
/* Register SAI TC, HT and Error callbacks */
else if (HAL_SAI_RegisterCallback(&haudio_out_sai, HAL_SAI_TX_COMPLETE_CB_ID, SAI_TxCpltCallback) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
else if (HAL_SAI_RegisterCallback(&haudio_out_sai, HAL_SAI_TX_HALFCOMPLETE_CB_ID, SAI_TxHalfCpltCallback) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
else if (HAL_SAI_RegisterCallback(&haudio_out_sai, HAL_SAI_ERROR_CB_ID, SAI_ErrorCallback) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
#endif /* (USE_HAL_SAI_REGISTER_CALLBACKS == 1) */
else
{
/* Initialize audio codec */
CS42L51_Init_t codec_init;
codec_init.InputDevice = (Audio_In_Ctx[0].State == AUDIO_IN_STATE_RESET) ? CS42L51_IN_NONE : CS42L51_IN_MIC1;
codec_init.OutputDevice = CS42L51_OUT_HEADPHONE;
codec_init.Frequency = AudioInit->SampleRate;
codec_init.Resolution = CS42L51_RESOLUTION_16B; /* Not used */
codec_init.Volume = AudioInit->Volume;
if (Audio_Drv->Init(Audio_CompObj, &codec_init) < 0)
{
status = BSP_ERROR_COMPONENT_FAILURE;
}
else
{
/* Update audio out context state */
Audio_Out_Ctx[Instance].State = AUDIO_OUT_STATE_STOP;
}
}
}
}
}
return status;
}
/**
* @brief De-initialize the audio out peripherals.
* @param Instance Audio out instance.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_DeInit(uint32_t Instance)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
else if (Audio_Out_Ctx[Instance].State != AUDIO_OUT_STATE_RESET)
{
/* Reset audio codec if not currently used by audio in instance 0 */
if (Audio_In_Ctx[0].State == AUDIO_IN_STATE_RESET)
{
CS42L51_PowerDown();
}
/* SAI peripheral de-initialization */
if (HAL_SAI_DeInit(&haudio_out_sai) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
/* De-initialize audio codec if not currently used by audio in instance 0 */
else
{
#if (USE_HAL_SAI_REGISTER_CALLBACKS == 0)
SAI_MspDeInit(&haudio_out_sai);
#endif /* (USE_HAL_SAI_REGISTER_CALLBACKS == 0) */
if (Audio_In_Ctx[0].State == AUDIO_IN_STATE_RESET)
{
if (Audio_Drv->DeInit(Audio_CompObj) < 0)
{
status = BSP_ERROR_COMPONENT_FAILURE;
}
}
}
if (status == BSP_ERROR_NONE)
{
/* Update audio out context */
Audio_Out_Ctx[Instance].State = AUDIO_OUT_STATE_RESET;
Audio_Out_Ctx[Instance].IsMute = 0U;
}
}
else
{
/* Nothing to do */
}
return status;
}
/**
* @brief Start playing audio stream from a data buffer for a determined size.
* @param Instance Audio out instance.
* @param pData Pointer on data buffer.
* @param NbrOfBytes Size of buffer in bytes. Maximum size is 65535 bytes.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_Play(uint32_t Instance, uint8_t* pData, uint32_t NbrOfBytes)
{
int32_t status = BSP_ERROR_NONE;
uint16_t NbrOfDmaDatas;
if ((Instance >= AUDIO_OUT_INSTANCES_NBR) || (pData == NULL) || (NbrOfBytes > 65535U))
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State != AUDIO_OUT_STATE_STOP)
{
status = BSP_ERROR_BUSY;
}
else
{
/* Compute number of DMA data to transfer according resolution */
if (Audio_Out_Ctx[Instance].BitsPerSample == AUDIO_RESOLUTION_16b)
{
NbrOfDmaDatas = (uint16_t) (NbrOfBytes / 2U);
}
else /* AUDIO_RESOLUTION_24b */
{
NbrOfDmaDatas = (uint16_t) (NbrOfBytes / 4U);
}
/* Initiate a DMA transfer of audio samples towards the serial audio interface */
if (HAL_SAI_Transmit_DMA(&haudio_out_sai, pData, NbrOfDmaDatas) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
/* Call the audio codec play function */
else if (Audio_Drv->Play(Audio_CompObj) < 0)
{
status = BSP_ERROR_COMPONENT_FAILURE;
}
else
{
/* Update audio out state */
Audio_Out_Ctx[Instance].State = AUDIO_OUT_STATE_PLAYING;
}
}
return status;
}
/**
* @brief Pause playback of audio stream.
* @param Instance Audio out instance.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_Pause(uint32_t Instance)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State != AUDIO_OUT_STATE_PLAYING)
{
status = BSP_ERROR_BUSY;
}
/* Call the audio codec pause function */
else if (Audio_Drv->Pause(Audio_CompObj) < 0)
{
status = BSP_ERROR_COMPONENT_FAILURE;
}
/* Pause DMA transfer of audio samples towards the serial audio interface */
else if (HAL_SAI_DMAPause(&haudio_out_sai) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
else
{
/* Update audio out state */
Audio_Out_Ctx[Instance].State = AUDIO_OUT_STATE_PAUSE;
}
return status;
}
/**
* @brief Resume playback of audio stream.
* @param Instance Audio out instance.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_Resume(uint32_t Instance)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State != AUDIO_OUT_STATE_PAUSE)
{
status = BSP_ERROR_BUSY;
}
/* Call the audio codec resume function */
else if (Audio_Drv->Resume(Audio_CompObj) < 0)
{
status = BSP_ERROR_COMPONENT_FAILURE;
}
/* Resume DMA transfer of audio samples towards the serial audio interface */
else if (HAL_SAI_DMAResume(&haudio_out_sai) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
else
{
/* Update audio out state */
Audio_Out_Ctx[Instance].State = AUDIO_OUT_STATE_PLAYING;
}
return status;
}
/**
* @brief Stop playback of audio stream.
* @param Instance Audio out instance.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_Stop(uint32_t Instance)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State == AUDIO_OUT_STATE_STOP)
{
/* Nothing to do */
}
else if ((Audio_Out_Ctx[Instance].State != AUDIO_OUT_STATE_PLAYING) &&
(Audio_Out_Ctx[Instance].State != AUDIO_OUT_STATE_PAUSE))
{
status = BSP_ERROR_BUSY;
}
/* Call the audio codec stop function */
else if (Audio_Drv->Stop(Audio_CompObj, CS42L51_PDWN_SW) < 0)
{
status = BSP_ERROR_COMPONENT_FAILURE;
}
/* Stop DMA transfer of audio samples towards the serial audio interface */
else if (HAL_SAI_DMAStop(&haudio_out_sai) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
else
{
/* Update audio out state */
Audio_Out_Ctx[Instance].State = AUDIO_OUT_STATE_STOP;
}
return status;
}
/**
* @brief Mute playback of audio stream.
* @param Instance Audio out instance.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_Mute(uint32_t Instance)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State == AUDIO_OUT_STATE_RESET)
{
status = BSP_ERROR_BUSY;
}
/* Check audio out mute status */
else if (Audio_Out_Ctx[Instance].IsMute == 1U)
{
/* Nothing to do */
}
/* Call the audio codec mute function */
else if (Audio_Drv->SetMute(Audio_CompObj, CS42L51_MUTE_ON) < 0)
{
status = BSP_ERROR_COMPONENT_FAILURE;
}
else
{
/* Update audio out mute status */
Audio_Out_Ctx[Instance].IsMute = 1U;
}
return status;
}
/**
* @brief Unmute playback of audio stream.
* @param Instance Audio out instance.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_UnMute(uint32_t Instance)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State == AUDIO_OUT_STATE_RESET)
{
status = BSP_ERROR_BUSY;
}
/* Check audio out mute status */
else if (Audio_Out_Ctx[Instance].IsMute == 0U)
{
/* Nothing to do */
}
/* Call the audio codec mute function */
else if (Audio_Drv->SetMute(Audio_CompObj, CS42L51_MUTE_OFF) < 0)
{
status = BSP_ERROR_COMPONENT_FAILURE;
}
else
{
/* Update audio out mute status */
Audio_Out_Ctx[Instance].IsMute = 0U;
}
return status;
}
/**
* @brief Check audio out mute status.
* @param Instance Audio out instance.
* @param IsMute Pointer to mute status. Value is 1 for mute, 0 for unmute status.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_IsMute(uint32_t Instance, uint32_t *IsMute)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State == AUDIO_OUT_STATE_RESET)
{
status = BSP_ERROR_BUSY;
}
/* Get the current audio out mute status */
else
{
*IsMute = Audio_Out_Ctx[Instance].IsMute;
}
return status;
}
/**
* @brief Set audio out volume.
* @param Instance Audio out instance.
* @param Volume Volume level in percentage from 0% to 100%.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_SetVolume(uint32_t Instance, uint32_t Volume)
{
int32_t status = BSP_ERROR_NONE;
if ((Instance >= AUDIO_OUT_INSTANCES_NBR) || (Volume > 100U))
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State == AUDIO_OUT_STATE_RESET)
{
status = BSP_ERROR_BUSY;
}
else
{
/* Call the audio codec volume control function */
if (Audio_Drv->SetVolume(Audio_CompObj, VOLUME_OUTPUT, (uint8_t) Volume) < 0)
{
status = BSP_ERROR_COMPONENT_FAILURE;
}
else
{
/* Store volume on audio out context */
Audio_Out_Ctx[Instance].Volume = Volume;
}
}
return status;
}
/**
* @brief Get audio out volume.
* @param Instance Audio out instance.
* @param Volume Pointer to volume level in percentage from 0% to 100%.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_GetVolume(uint32_t Instance, uint32_t *Volume)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State == AUDIO_OUT_STATE_RESET)
{
status = BSP_ERROR_BUSY;
}
/* Get the current audio out volume */
else
{
*Volume = Audio_Out_Ctx[Instance].Volume;
}
return status;
}
/**
* @brief Set audio out sample rate.
* @param Instance Audio out instance.
* @param SampleRate Sample rate of the audio out stream.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_SetSampleRate(uint32_t Instance, uint32_t SampleRate)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State != AUDIO_OUT_STATE_STOP)
{
status = BSP_ERROR_BUSY;
}
/* Check if record on instance 0 is on going and corresponding sample rate */
else if ((Audio_In_Ctx[0].State != AUDIO_IN_STATE_RESET) &&
(Audio_In_Ctx[0].SampleRate != SampleRate))
{
status = BSP_ERROR_FEATURE_NOT_SUPPORTED;
}
/* Check if record on instance 1 is on going and corresponding sample rate */
else if ((Audio_In_Ctx[1].State != AUDIO_IN_STATE_RESET) &&
(Audio_In_Ctx[1].SampleRate != SampleRate))
{
status = BSP_ERROR_FEATURE_NOT_SUPPORTED;
}
/* Check if sample rate is modified */
else if (Audio_Out_Ctx[Instance].SampleRate == SampleRate)
{
/* Nothing to do */
}
else
{
/* Update SAI1 clock config */
haudio_out_sai.Init.AudioFrequency = SampleRate;
if (MX_SAI1_ClockConfig(&haudio_out_sai, SampleRate) != HAL_OK)
{
status = BSP_ERROR_CLOCK_FAILURE;
}
/* Re-initialize SAI1 with new sample rate */
else if (HAL_SAI_Init(&haudio_out_sai) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
#if (USE_HAL_SAI_REGISTER_CALLBACKS == 1)
/* Register SAI TC, HT and Error callbacks */
else if (HAL_SAI_RegisterCallback(&haudio_out_sai, HAL_SAI_TX_COMPLETE_CB_ID, SAI_TxCpltCallback) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
else if (HAL_SAI_RegisterCallback(&haudio_out_sai, HAL_SAI_TX_HALFCOMPLETE_CB_ID, SAI_TxHalfCpltCallback) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
else if (HAL_SAI_RegisterCallback(&haudio_out_sai, HAL_SAI_ERROR_CB_ID, SAI_ErrorCallback) != HAL_OK)
{
status = BSP_ERROR_PERIPH_FAILURE;
}
#endif /* (USE_HAL_SAI_REGISTER_CALLBACKS == 1) */
/* Store new sample rate on audio out context */
else
{
Audio_Out_Ctx[Instance].SampleRate = SampleRate;
}
}
return status;
}
/**
* @brief Get audio out sample rate.
* @param Instance Audio out instance.
* @param SampleRate Pointer to sample rate of the audio out stream.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_GetSampleRate(uint32_t Instance, uint32_t *SampleRate)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State == AUDIO_OUT_STATE_RESET)
{
status = BSP_ERROR_BUSY;
}
/* Get the current audio out sample rate */
else
{
*SampleRate = Audio_Out_Ctx[Instance].SampleRate;
}
return status;
}
/**
* @brief Set audio out device.
* @param Instance Audio out instance.
* @param Device Device of the audio out stream.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_SetDevice(uint32_t Instance, uint32_t Device)
{
int32_t status = BSP_ERROR_NONE;
UNUSED(Device);
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State != AUDIO_OUT_STATE_STOP)
{
status = BSP_ERROR_BUSY;
}
else
{
/* Nothing to do because there is only one device (AUDIO_OUT_HEADPHONE) */
}
return status;
}
/**
* @brief Get audio out device.
* @param Instance Audio out instance.
* @param Device Pointer to device of the audio out stream.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_GetDevice(uint32_t Instance, uint32_t *Device)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
/* Check audio out state */
else if (Audio_Out_Ctx[Instance].State == AUDIO_OUT_STATE_RESET)
{
status = BSP_ERROR_BUSY;
}
/* Get the current audio out device */
else
{
*Device = Audio_Out_Ctx[Instance].Device;
}
return status;
}
/**
* @brief Set bits per sample for the audio out stream.
* @param Instance Audio out instance.
* @param BitsPerSample Bits per sample of the audio out stream.
* @retval BSP status.
*/
int32_t BSP_AUDIO_OUT_SetBitsPerSample(uint32_t Instance, uint32_t BitsPerSample)
{
int32_t status = BSP_ERROR_NONE;
if (Instance >= AUDIO_OUT_INSTANCES_NBR)
{
status = BSP_ERROR_WRONG_PARAM;
}
else if ((Instance == 0U) && ((BitsPerSample == AUDIO_RESOLUTION_32b) || (BitsPerSample == AUDIO_RESOLUTION_8b)))