Mercurial > public > ostc4
diff Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sai.c @ 160:e3ca52b8e7fa
Merge with FlipDisplay
| author | heinrichsweikamp |
|---|---|
| date | Thu, 07 Mar 2019 15:06:43 +0100 |
| parents | c78bcbd5deda |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sai.c Thu Mar 07 15:06:43 2019 +0100 @@ -0,0 +1,2209 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_sai.c + * @author MCD Application Team + * @brief SAI HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of the Serial Audio Interface (SAI) peripheral: + * + Initialization/de-initialization functions + * + I/O operation functions + * + Peripheral Control functions + * + Peripheral State functions + * + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + + [..] + The SAI HAL driver can be used as follows: + + (#) Declare a SAI_HandleTypeDef handle structure (eg. SAI_HandleTypeDef hsai). + (#) Initialize the SAI low level resources by implementing the HAL_SAI_MspInit() API: + (##) Enable the SAI interface clock. + (##) SAI pins configuration: + (+++) Enable the clock for the SAI GPIOs. + (+++) Configure these SAI pins as alternate function pull-up. + (##) NVIC configuration if you need to use interrupt process (HAL_SAI_Transmit_IT() + and HAL_SAI_Receive_IT() APIs): + (+++) Configure the SAI interrupt priority. + (+++) Enable the NVIC SAI IRQ handle. + + (##) DMA Configuration if you need to use DMA process (HAL_SAI_Transmit_DMA() + and HAL_SAI_Receive_DMA() APIs): + (+++) Declare a DMA handle structure for the Tx/Rx stream. + (+++) Enable the DMAx interface clock. + (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters. + (+++) Configure the DMA Tx/Rx Stream. + (+++) Associate the initialized DMA handle to the SAI DMA Tx/Rx handle. + (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the + DMA Tx/Rx Stream. + + (#) The initialization can be done by two ways + (##) Expert mode : Initialize the structures Init, FrameInit and SlotInit and call HAL_SAI_Init(). + (##) Simplified mode : Initialize the high part of Init Structure and call HAL_SAI_InitProtocol(). + + [..] + (@) The specific SAI interrupts (FIFO request and Overrun underrun interrupt) + will be managed using the macros __HAL_SAI_ENABLE_IT() and __HAL_SAI_DISABLE_IT() + inside the transmit and receive process. + + [..] + (@) SAI Clock Source configuration is managed differently depending on the selected + STM32F4 devices : + (+@) For STM32F446xx devices, the configuration is managed through RCCEx_PeriphCLKConfig() + function in the HAL RCC drivers + (+@) For STM32F439xx/STM32F437xx/STM32F429xx/STM32F427xx devices, the configuration + is managed within HAL SAI drivers through HAL_SAI_Init() function using + ClockSource field of SAI_InitTypeDef structure. + [..] + (@) Make sure that either: + (+@) I2S PLL is configured or + (+@) SAI PLL is configured or + (+@) External clock source is configured after setting correctly + the define constant EXTERNAL_CLOCK_VALUE in the stm32f4xx_hal_conf.h file. + [..] + (@) In master Tx mode: enabling the audio block immediately generates the bit clock + for the external slaves even if there is no data in the FIFO, However FS signal + generation is conditioned by the presence of data in the FIFO. + + [..] + (@) In master Rx mode: enabling the audio block immediately generates the bit clock + and FS signal for the external slaves. + + [..] + (@) It is mandatory to respect the following conditions in order to avoid bad SAI behavior: + (+@) First bit Offset <= (SLOT size - Data size) + (+@) Data size <= SLOT size + (+@) Number of SLOT x SLOT size = Frame length + (+@) The number of slots should be even when SAI_FS_CHANNEL_IDENTIFICATION is selected. + + [..] + Three operation modes are available within this driver : + + *** Polling mode IO operation *** + ================================= + [..] + (+) Send an amount of data in blocking mode using HAL_SAI_Transmit() + (+) Receive an amount of data in blocking mode using HAL_SAI_Receive() + + *** Interrupt mode IO operation *** + =================================== + [..] + (+) Send an amount of data in non-blocking mode using HAL_SAI_Transmit_IT() + (+) At transmission end of transfer HAL_SAI_TxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_SAI_TxCpltCallback() + (+) Receive an amount of data in non-blocking mode using HAL_SAI_Receive_IT() + (+) At reception end of transfer HAL_SAI_RxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_SAI_RxCpltCallback() + (+) In case of flag error, HAL_SAI_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_SAI_ErrorCallback() + + *** DMA mode IO operation *** + ============================= + [..] + (+) Send an amount of data in non-blocking mode (DMA) using HAL_SAI_Transmit_DMA() + (+) At transmission end of transfer HAL_SAI_TxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_SAI_TxCpltCallback() + (+) Receive an amount of data in non-blocking mode (DMA) using HAL_SAI_Receive_DMA() + (+) At reception end of transfer HAL_SAI_RxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_SAI_RxCpltCallback() + (+) In case of flag error, HAL_SAI_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_SAI_ErrorCallback() + (+) Pause the DMA Transfer using HAL_SAI_DMAPause() + (+) Resume the DMA Transfer using HAL_SAI_DMAResume() + (+) Stop the DMA Transfer using HAL_SAI_DMAStop() + + *** SAI HAL driver additional function list *** + =============================================== + [..] + Below the list the others API available SAI HAL driver : + + (+) HAL_SAI_EnableTxMuteMode(): Enable the mute in tx mode + (+) HAL_SAI_DisableTxMuteMode(): Disable the mute in tx mode + (+) HAL_SAI_EnableRxMuteMode(): Enable the mute in Rx mode + (+) HAL_SAI_DisableRxMuteMode(): Disable the mute in Rx mode + (+) HAL_SAI_FlushRxFifo(): Flush the rx fifo. + (+) HAL_SAI_Abort(): Abort the current transfer + + *** SAI HAL driver macros list *** + ================================== + [..] + Below the list of most used macros in SAI HAL driver : + + (+) __HAL_SAI_ENABLE(): Enable the SAI peripheral + (+) __HAL_SAI_DISABLE(): Disable the SAI peripheral + (+) __HAL_SAI_ENABLE_IT(): Enable the specified SAI interrupts + (+) __HAL_SAI_DISABLE_IT(): Disable the specified SAI interrupts + (+) __HAL_SAI_GET_IT_SOURCE(): Check if the specified SAI interrupt source is + enabled or disabled + (+) __HAL_SAI_GET_FLAG(): Check whether the specified SAI flag is set or not + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx_hal.h" + +/** @addtogroup STM32F4xx_HAL_Driver + * @{ + */ + +/** @defgroup SAI SAI + * @brief SAI HAL module driver + * @{ + */ + +#ifdef HAL_SAI_MODULE_ENABLED + +#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\ + defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) || defined(STM32F413xx) ||\ + defined(STM32F423xx) + +/** @defgroup SAI_Private_Typedefs SAI Private Typedefs + * @{ + */ +typedef enum { + SAI_MODE_DMA, + SAI_MODE_IT +}SAI_ModeTypedef; +/** + * @} + */ + +/* Private define ------------------------------------------------------------*/ + +/** @defgroup SAI_Private_Constants SAI Private Constants + * @{ + */ +#define SAI_FIFO_SIZE 8U +#define SAI_DEFAULT_TIMEOUT 4U /* 4ms */ +/** + * @} + */ + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ + +/** @defgroup SAI_Private_Functions SAI Private Functions + * @{ + */ +static void SAI_FillFifo(SAI_HandleTypeDef *hsai); +static uint32_t SAI_InterruptFlag(SAI_HandleTypeDef *hsai, uint32_t mode); +static HAL_StatusTypeDef SAI_InitI2S(SAI_HandleTypeDef *hsai, uint32_t protocol, uint32_t datasize, uint32_t nbslot); +static HAL_StatusTypeDef SAI_InitPCM(SAI_HandleTypeDef *hsai, uint32_t protocol, uint32_t datasize, uint32_t nbslot); + +static HAL_StatusTypeDef SAI_Disable(SAI_HandleTypeDef *hsai); +static void SAI_Transmit_IT8Bit(SAI_HandleTypeDef *hsai); +static void SAI_Transmit_IT16Bit(SAI_HandleTypeDef *hsai); +static void SAI_Transmit_IT32Bit(SAI_HandleTypeDef *hsai); +static void SAI_Receive_IT8Bit(SAI_HandleTypeDef *hsai); +static void SAI_Receive_IT16Bit(SAI_HandleTypeDef *hsai); +static void SAI_Receive_IT32Bit(SAI_HandleTypeDef *hsai); + +static void SAI_DMATxCplt(DMA_HandleTypeDef *hdma); +static void SAI_DMATxHalfCplt(DMA_HandleTypeDef *hdma); +static void SAI_DMARxCplt(DMA_HandleTypeDef *hdma); +static void SAI_DMARxHalfCplt(DMA_HandleTypeDef *hdma); +static void SAI_DMAError(DMA_HandleTypeDef *hdma); +static void SAI_DMAAbort(DMA_HandleTypeDef *hdma); +/** + * @} + */ + +/* Exported functions ---------------------------------------------------------*/ + +/** @defgroup SAI_Exported_Functions SAI Exported Functions + * @{ + */ + +/** @defgroup SAI_Exported_Functions_Group1 Initialization and de-initialization functions + * @brief Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### Initialization and de-initialization functions ##### + =============================================================================== + [..] This subsection provides a set of functions allowing to initialize and + de-initialize the SAIx peripheral: + + (+) User must implement HAL_SAI_MspInit() function in which he configures + all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC ). + + (+) Call the function HAL_SAI_Init() to configure the selected device with + the selected configuration: + (++) Mode (Master/slave TX/RX) + (++) Protocol + (++) Data Size + (++) MCLK Output + (++) Audio frequency + (++) FIFO Threshold + (++) Frame Config + (++) Slot Config + + (+) Call the function HAL_SAI_DeInit() to restore the default configuration + of the selected SAI peripheral. + +@endverbatim + * @{ + */ + +/** + * @brief Initialize the structure FrameInit, SlotInit and the low part of + * Init according to the specified parameters and call the function + * HAL_SAI_Init to initialize the SAI block. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param protocol one of the supported protocol @ref SAI_Protocol + * @param datasize one of the supported datasize @ref SAI_Protocol_DataSize + * the configuration information for SAI module. + * @param nbslot Number of slot. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_InitProtocol(SAI_HandleTypeDef *hsai, uint32_t protocol, uint32_t datasize, uint32_t nbslot) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check the parameters */ + assert_param(IS_SAI_SUPPORTED_PROTOCOL(protocol)); + assert_param(IS_SAI_PROTOCOL_DATASIZE(datasize)); + + switch(protocol) + { + case SAI_I2S_STANDARD : + case SAI_I2S_MSBJUSTIFIED : + case SAI_I2S_LSBJUSTIFIED : + status = SAI_InitI2S(hsai, protocol, datasize, nbslot); + break; + case SAI_PCM_LONG : + case SAI_PCM_SHORT : + status = SAI_InitPCM(hsai, protocol, datasize, nbslot); + break; + default : + status = HAL_ERROR; + break; + } + + if(status == HAL_OK) + { + status = HAL_SAI_Init(hsai); + } + + return status; +} + +/** + * @brief Initialize the SAI according to the specified parameters. + * in the SAI_InitTypeDef structure and initialize the associated handle. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_Init(SAI_HandleTypeDef *hsai) +{ + uint32_t tmpregisterGCR = 0U; + + /* This variable used to store the SAI_CK_x (value in Hz) */ + uint32_t freq = 0U; + + /* This variable is used to compute CKSTR bits of SAI CR1 according to + ClockStrobing and AudioMode fields */ + uint32_t ckstr_bits = 0U; + uint32_t syncen_bits = 0U; + + /* Check the SAI handle allocation */ + if(hsai == NULL) + { + return HAL_ERROR; + } + + /* check the instance */ + assert_param(IS_SAI_ALL_INSTANCE(hsai->Instance)); + + /* Check the SAI Block parameters */ + assert_param(IS_SAI_AUDIO_FREQUENCY(hsai->Init.AudioFrequency)); + assert_param(IS_SAI_BLOCK_PROTOCOL(hsai->Init.Protocol)); + assert_param(IS_SAI_BLOCK_MODE(hsai->Init.AudioMode)); + assert_param(IS_SAI_BLOCK_SYNCEXT(hsai->Init.SynchroExt)); + assert_param(IS_SAI_BLOCK_DATASIZE(hsai->Init.DataSize)); + assert_param(IS_SAI_BLOCK_FIRST_BIT(hsai->Init.FirstBit)); + assert_param(IS_SAI_BLOCK_CLOCK_STROBING(hsai->Init.ClockStrobing)); + assert_param(IS_SAI_BLOCK_SYNCHRO(hsai->Init.Synchro)); + assert_param(IS_SAI_BLOCK_OUTPUT_DRIVE(hsai->Init.OutputDrive)); + assert_param(IS_SAI_BLOCK_NODIVIDER(hsai->Init.NoDivider)); + assert_param(IS_SAI_BLOCK_FIFO_THRESHOLD(hsai->Init.FIFOThreshold)); + assert_param(IS_SAI_MONO_STEREO_MODE(hsai->Init.MonoStereoMode)); + assert_param(IS_SAI_BLOCK_COMPANDING_MODE(hsai->Init.CompandingMode)); + assert_param(IS_SAI_BLOCK_TRISTATE_MANAGEMENT(hsai->Init.TriState)); + + /* Check the SAI Block Frame parameters */ + assert_param(IS_SAI_BLOCK_FRAME_LENGTH(hsai->FrameInit.FrameLength)); + assert_param(IS_SAI_BLOCK_ACTIVE_FRAME(hsai->FrameInit.ActiveFrameLength)); + assert_param(IS_SAI_BLOCK_FS_DEFINITION(hsai->FrameInit.FSDefinition)); + assert_param(IS_SAI_BLOCK_FS_POLARITY(hsai->FrameInit.FSPolarity)); + assert_param(IS_SAI_BLOCK_FS_OFFSET(hsai->FrameInit.FSOffset)); + + /* Check the SAI Block Slot parameters */ + assert_param(IS_SAI_BLOCK_FIRSTBIT_OFFSET(hsai->SlotInit.FirstBitOffset)); + assert_param(IS_SAI_BLOCK_SLOT_SIZE(hsai->SlotInit.SlotSize)); + assert_param(IS_SAI_BLOCK_SLOT_NUMBER(hsai->SlotInit.SlotNumber)); + assert_param(IS_SAI_SLOT_ACTIVE(hsai->SlotInit.SlotActive)); + + if(hsai->State == HAL_SAI_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hsai->Lock = HAL_UNLOCKED; + + /* Init the low level hardware : GPIO, CLOCK, NVIC and DMA */ + HAL_SAI_MspInit(hsai); + } + + hsai->State = HAL_SAI_STATE_BUSY; + + /* Disable the selected SAI peripheral */ + SAI_Disable(hsai); + + /* SAI Block Synchro Configuration -----------------------------------------*/ + SAI_BlockSynchroConfig(hsai); + + /* Configure Master Clock using the following formula : + MCLK_x = SAI_CK_x / (MCKDIV[3:0] * 2) with MCLK_x = 256 * FS + FS = SAI_CK_x / (MCKDIV[3:0] * 2) * 256 + MCKDIV[3:0] = SAI_CK_x / FS * 512 */ + if(hsai->Init.AudioFrequency != SAI_AUDIO_FREQUENCY_MCKDIV) + { + /* Get SAI clock source based on Source clock selection from RCC */ + freq = SAI_GetInputClock(hsai); + + /* (saiclocksource x 10) to keep Significant digits */ + tmpregisterGCR = (((freq * 10U) / ((hsai->Init.AudioFrequency) * 512U))); + + hsai->Init.Mckdiv = tmpregisterGCR / 10U; + + /* Round result to the nearest integer */ + if((tmpregisterGCR % 10U) > 8U) + { + hsai->Init.Mckdiv+= 1U; + } + } + + /* Compute CKSTR bits of SAI CR1 according to ClockStrobing and AudioMode */ + if((hsai->Init.AudioMode == SAI_MODEMASTER_TX) || (hsai->Init.AudioMode == SAI_MODESLAVE_TX)) + { + ckstr_bits = (hsai->Init.ClockStrobing == SAI_CLOCKSTROBING_RISINGEDGE) ? 0U: SAI_xCR1_CKSTR; + } + else + { + ckstr_bits = (hsai->Init.ClockStrobing == SAI_CLOCKSTROBING_RISINGEDGE) ? SAI_xCR1_CKSTR: 0U; + } + + /* SAI Block Configuration -------------------------------------------------*/ + switch(hsai->Init.Synchro) + { + case SAI_ASYNCHRONOUS : + { + syncen_bits = 0U; + } + break; + case SAI_SYNCHRONOUS : + { + syncen_bits = SAI_xCR1_SYNCEN_0; + } + break; + case SAI_SYNCHRONOUS_EXT_SAI1 : + case SAI_SYNCHRONOUS_EXT_SAI2 : + { + syncen_bits = SAI_xCR1_SYNCEN_1; + } + break; + default: + break; + } + /* SAI CR1 Configuration */ + hsai->Instance->CR1 &= ~(SAI_xCR1_MODE | SAI_xCR1_PRTCFG | SAI_xCR1_DS | \ + SAI_xCR1_LSBFIRST | SAI_xCR1_CKSTR | SAI_xCR1_SYNCEN |\ + SAI_xCR1_MONO | SAI_xCR1_OUTDRIV | SAI_xCR1_DMAEN | \ + SAI_xCR1_NODIV | SAI_xCR1_MCKDIV); + + hsai->Instance->CR1 |= (hsai->Init.AudioMode | hsai->Init.Protocol | \ + hsai->Init.DataSize | hsai->Init.FirstBit | \ + ckstr_bits | syncen_bits | \ + hsai->Init.MonoStereoMode | hsai->Init.OutputDrive | \ + hsai->Init.NoDivider | (hsai->Init.Mckdiv << 20U)); + + /* SAI CR2 Configuration */ + hsai->Instance->CR2 &= ~(SAI_xCR2_FTH | SAI_xCR2_FFLUSH | SAI_xCR2_COMP | SAI_xCR2_CPL); + hsai->Instance->CR2 |= (hsai->Init.FIFOThreshold | hsai->Init.CompandingMode | hsai->Init.TriState); + + /* SAI Frame Configuration -----------------------------------------*/ + hsai->Instance->FRCR&=(~(SAI_xFRCR_FRL | SAI_xFRCR_FSALL | SAI_xFRCR_FSDEF | \ + SAI_xFRCR_FSPOL | SAI_xFRCR_FSOFF)); + hsai->Instance->FRCR|=((hsai->FrameInit.FrameLength - 1U) | + hsai->FrameInit.FSOffset | + hsai->FrameInit.FSDefinition | + hsai->FrameInit.FSPolarity | + ((hsai->FrameInit.ActiveFrameLength - 1U) << 8U)); + + /* SAI Block_x SLOT Configuration ------------------------------------------*/ + /* This register has no meaning in AC 97 and SPDIF audio protocol */ + hsai->Instance->SLOTR &= ~(SAI_xSLOTR_FBOFF | SAI_xSLOTR_SLOTSZ | \ + SAI_xSLOTR_NBSLOT | SAI_xSLOTR_SLOTEN ); + + hsai->Instance->SLOTR |= hsai->SlotInit.FirstBitOffset | hsai->SlotInit.SlotSize | \ + (hsai->SlotInit.SlotActive << 16U) | ((hsai->SlotInit.SlotNumber - 1U) << 8U); + + /* Initialize the error code */ + hsai->ErrorCode = HAL_SAI_ERROR_NONE; + + /* Initialize the SAI state */ + hsai->State= HAL_SAI_STATE_READY; + + /* Release Lock */ + __HAL_UNLOCK(hsai); + + return HAL_OK; +} + +/** + * @brief DeInitialize the SAI peripheral. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_DeInit(SAI_HandleTypeDef *hsai) +{ + /* Check the SAI handle allocation */ + if(hsai == NULL) + { + return HAL_ERROR; + } + + hsai->State = HAL_SAI_STATE_BUSY; + + /* Disabled All interrupt and clear all the flag */ + hsai->Instance->IMR = 0U; + hsai->Instance->CLRFR = 0xFFFFFFFFU; + + /* Disable the SAI */ + SAI_Disable(hsai); + + /* Flush the fifo */ + SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH); + + /* DeInit the low level hardware: GPIO, CLOCK, NVIC and DMA */ + HAL_SAI_MspDeInit(hsai); + + /* Initialize the error code */ + hsai->ErrorCode = HAL_SAI_ERROR_NONE; + + /* Initialize the SAI state */ + hsai->State = HAL_SAI_STATE_RESET; + + /* Release Lock */ + __HAL_UNLOCK(hsai); + + return HAL_OK; +} + +/** + * @brief Initialize the SAI MSP. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +__weak void HAL_SAI_MspInit(SAI_HandleTypeDef *hsai) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hsai); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_SAI_MspInit could be implemented in the user file + */ +} + +/** + * @brief DeInitialize the SAI MSP. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +__weak void HAL_SAI_MspDeInit(SAI_HandleTypeDef *hsai) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hsai); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_SAI_MspDeInit could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup SAI_Exported_Functions_Group2 IO operation functions + * @brief Data transfers functions + * +@verbatim + ============================================================================== + ##### IO operation functions ##### + ============================================================================== + [..] + This subsection provides a set of functions allowing to manage the SAI data + transfers. + + (+) There are two modes of transfer: + (++) Blocking mode : The communication is performed in the polling mode. + The status of all data processing is returned by the same function + after finishing transfer. + (++) No-Blocking mode : The communication is performed using Interrupts + or DMA. These functions return the status of the transfer startup. + The end of the data processing will be indicated through the + dedicated SAI IRQ when using Interrupt mode or the DMA IRQ when + using DMA mode. + + (+) Blocking mode functions are : + (++) HAL_SAI_Transmit() + (++) HAL_SAI_Receive() + + (+) Non Blocking mode functions with Interrupt are : + (++) HAL_SAI_Transmit_IT() + (++) HAL_SAI_Receive_IT() + + (+) Non Blocking mode functions with DMA are : + (++) HAL_SAI_Transmit_DMA() + (++) HAL_SAI_Receive_DMA() + + (+) A set of Transfer Complete Callbacks are provided in non Blocking mode: + (++) HAL_SAI_TxCpltCallback() + (++) HAL_SAI_RxCpltCallback() + (++) HAL_SAI_ErrorCallback() + +@endverbatim + * @{ + */ + +/** + * @brief Transmit an amount of data in blocking mode. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_Transmit(SAI_HandleTypeDef *hsai, uint8_t* pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = HAL_GetTick(); + + if((pData == NULL ) || (Size == 0)) + { + return HAL_ERROR; + } + + if(hsai->State == HAL_SAI_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hsai); + + hsai->XferSize = Size; + hsai->XferCount = Size; + hsai->pBuffPtr = pData; + hsai->State = HAL_SAI_STATE_BUSY_TX; + hsai->ErrorCode = HAL_SAI_ERROR_NONE; + + /* Check if the SAI is already enabled */ + if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET) + { + /* fill the fifo with data before to enabled the SAI */ + SAI_FillFifo(hsai); + /* Enable SAI peripheral */ + __HAL_SAI_ENABLE(hsai); + } + + while(hsai->XferCount > 0U) + { + /* Write data if the FIFO is not full */ + if((hsai->Instance->SR & SAI_xSR_FLVL) != SAI_FIFOSTATUS_FULL) + { + if((hsai->Init.DataSize == SAI_DATASIZE_8) && (hsai->Init.CompandingMode == SAI_NOCOMPANDING)) + { + hsai->Instance->DR = (*hsai->pBuffPtr++); + } + else if(hsai->Init.DataSize <= SAI_DATASIZE_16) + { + hsai->Instance->DR = *((uint16_t *)hsai->pBuffPtr); + hsai->pBuffPtr+= 2U; + } + else + { + hsai->Instance->DR = *((uint32_t *)hsai->pBuffPtr); + hsai->pBuffPtr+= 4U; + } + hsai->XferCount--; + } + else + { + /* Check for the Timeout */ + if((Timeout != HAL_MAX_DELAY) && ((Timeout == 0U)||((HAL_GetTick() - tickstart) > Timeout))) + { + /* Update error code */ + hsai->ErrorCode |= HAL_SAI_ERROR_TIMEOUT; + + /* Clear all the flags */ + hsai->Instance->CLRFR = 0xFFFFFFFFU; + + /* Disable SAI peripheral */ + SAI_Disable(hsai); + + /* Flush the fifo */ + SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH); + + /* Change the SAI state */ + hsai->State = HAL_SAI_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return HAL_ERROR; + } + } + } + + hsai->State = HAL_SAI_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive an amount of data in blocking mode. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param pData Pointer to data buffer + * @param Size Amount of data to be received + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_Receive(SAI_HandleTypeDef *hsai, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = HAL_GetTick(); + + if((pData == NULL ) || (Size == 0)) + { + return HAL_ERROR; + } + + if(hsai->State == HAL_SAI_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hsai); + + hsai->pBuffPtr = pData; + hsai->XferSize = Size; + hsai->XferCount = Size; + hsai->State = HAL_SAI_STATE_BUSY_RX; + hsai->ErrorCode = HAL_SAI_ERROR_NONE; + + /* Check if the SAI is already enabled */ + if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET) + { + /* Enable SAI peripheral */ + __HAL_SAI_ENABLE(hsai); + } + + /* Receive data */ + while(hsai->XferCount > 0U) + { + if((hsai->Instance->SR & SAI_xSR_FLVL) != SAI_FIFOSTATUS_EMPTY) + { + if((hsai->Init.DataSize == SAI_DATASIZE_8) && (hsai->Init.CompandingMode == SAI_NOCOMPANDING)) + { + (*hsai->pBuffPtr++) = hsai->Instance->DR; + } + else if(hsai->Init.DataSize <= SAI_DATASIZE_16) + { + *((uint16_t*)hsai->pBuffPtr) = hsai->Instance->DR; + hsai->pBuffPtr+= 2U; + } + else + { + *((uint32_t*)hsai->pBuffPtr) = hsai->Instance->DR; + hsai->pBuffPtr+= 4U; + } + hsai->XferCount--; + } + else + { + /* Check for the Timeout */ + if((Timeout != HAL_MAX_DELAY) && ((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))) + { + /* Update error code */ + hsai->ErrorCode |= HAL_SAI_ERROR_TIMEOUT; + + /* Clear all the flags */ + hsai->Instance->CLRFR = 0xFFFFFFFFU; + + /* Disable SAI peripheral */ + SAI_Disable(hsai); + + /* Flush the fifo */ + SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH); + + /* Change the SAI state */ + hsai->State = HAL_SAI_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return HAL_ERROR; + } + } + } + + hsai->State = HAL_SAI_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit an amount of data in non-blocking mode with Interrupt. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_Transmit_IT(SAI_HandleTypeDef *hsai, uint8_t *pData, uint16_t Size) +{ + if((pData == NULL) || (Size == 0)) + { + return HAL_ERROR; + } + + if(hsai->State == HAL_SAI_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hsai); + + hsai->pBuffPtr = pData; + hsai->XferSize = Size; + hsai->XferCount = Size; + hsai->ErrorCode = HAL_SAI_ERROR_NONE; + hsai->State = HAL_SAI_STATE_BUSY_TX; + + if((hsai->Init.DataSize == SAI_DATASIZE_8) && (hsai->Init.CompandingMode == SAI_NOCOMPANDING)) + { + hsai->InterruptServiceRoutine = SAI_Transmit_IT8Bit; + } + else if(hsai->Init.DataSize <= SAI_DATASIZE_16) + { + hsai->InterruptServiceRoutine = SAI_Transmit_IT16Bit; + } + else + { + hsai->InterruptServiceRoutine = SAI_Transmit_IT32Bit; + } + + /* Fill the fifo before starting the communication */ + SAI_FillFifo(hsai); + + /* Enable FRQ and OVRUDR interrupts */ + __HAL_SAI_ENABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT)); + + /* Check if the SAI is already enabled */ + if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET) + { + /* Enable SAI peripheral */ + __HAL_SAI_ENABLE(hsai); + } + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive an amount of data in non-blocking mode with Interrupt. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param pData Pointer to data buffer + * @param Size Amount of data to be received + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_Receive_IT(SAI_HandleTypeDef *hsai, uint8_t *pData, uint16_t Size) +{ + if((pData == NULL) || (Size == 0)) + { + return HAL_ERROR; + } + + if(hsai->State == HAL_SAI_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hsai); + + hsai->pBuffPtr = pData; + hsai->XferSize = Size; + hsai->XferCount = Size; + hsai->ErrorCode = HAL_SAI_ERROR_NONE; + hsai->State = HAL_SAI_STATE_BUSY_RX; + + if((hsai->Init.DataSize == SAI_DATASIZE_8) && (hsai->Init.CompandingMode == SAI_NOCOMPANDING)) + { + hsai->InterruptServiceRoutine = SAI_Receive_IT8Bit; + } + else if(hsai->Init.DataSize <= SAI_DATASIZE_16) + { + hsai->InterruptServiceRoutine = SAI_Receive_IT16Bit; + } + else + { + hsai->InterruptServiceRoutine = SAI_Receive_IT32Bit; + } + + /* Enable TXE and OVRUDR interrupts */ + __HAL_SAI_ENABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT)); + + /* Check if the SAI is already enabled */ + if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET) + { + /* Enable SAI peripheral */ + __HAL_SAI_ENABLE(hsai); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Pause the audio stream playing from the Media. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_DMAPause(SAI_HandleTypeDef *hsai) +{ + /* Process Locked */ + __HAL_LOCK(hsai); + + /* Pause the audio file playing by disabling the SAI DMA requests */ + hsai->Instance->CR1 &= ~SAI_xCR1_DMAEN; + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return HAL_OK; +} + +/** + * @brief Resume the audio stream playing from the Media. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_DMAResume(SAI_HandleTypeDef *hsai) +{ + /* Process Locked */ + __HAL_LOCK(hsai); + + /* Enable the SAI DMA requests */ + hsai->Instance->CR1 |= SAI_xCR1_DMAEN; + + /* If the SAI peripheral is still not enabled, enable it */ + if ((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET) + { + /* Enable SAI peripheral */ + __HAL_SAI_ENABLE(hsai); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return HAL_OK; +} + +/** + * @brief Stop the audio stream playing from the Media. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_DMAStop(SAI_HandleTypeDef *hsai) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Process Locked */ + __HAL_LOCK(hsai); + + /* Disable the SAI DMA request */ + hsai->Instance->CR1 &= ~SAI_xCR1_DMAEN; + + /* Abort the SAI Tx DMA Stream */ + if((hsai->hdmatx != NULL) && (hsai->State == HAL_SAI_STATE_BUSY_TX)) + { + if(HAL_DMA_Abort(hsai->hdmatx) != HAL_OK) + { + /* If the DMA Tx errorCode is different from DMA No Transfer then return Error */ + if(hsai->hdmatx->ErrorCode != HAL_DMA_ERROR_NO_XFER) + { + status = HAL_ERROR; + hsai->ErrorCode |= HAL_SAI_ERROR_DMA; + } + } + } + + /* Abort the SAI Rx DMA Stream */ + if((hsai->hdmarx != NULL) && (hsai->State == HAL_SAI_STATE_BUSY_RX)) + { + if(HAL_DMA_Abort(hsai->hdmarx) != HAL_OK) + { + /* If the DMA Rx errorCode is different from DMA No Transfer then return Error */ + if(hsai->hdmarx->ErrorCode != HAL_DMA_ERROR_NO_XFER) + { + status = HAL_ERROR; + hsai->ErrorCode |= HAL_SAI_ERROR_DMA; + } + } + } + + /* Disable SAI peripheral */ + SAI_Disable(hsai); + + /* Flush the fifo */ + SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH); + + /* Set hsai state to ready */ + hsai->State = HAL_SAI_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return status; +} + +/** + * @brief Abort the current transfer and disable the SAI. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_Abort(SAI_HandleTypeDef *hsai) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Process Locked */ + __HAL_LOCK(hsai); + + /* Check SAI DMA is enabled or not */ + if((hsai->Instance->CR1 & SAI_xCR1_DMAEN) == SAI_xCR1_DMAEN) + { + /* Disable the SAI DMA request */ + hsai->Instance->CR1 &= ~SAI_xCR1_DMAEN; + + /* Abort the SAI Tx DMA Stream */ + if((hsai->hdmatx != NULL) && (hsai->State == HAL_SAI_STATE_BUSY_TX)) + { + if(HAL_DMA_Abort(hsai->hdmatx) != HAL_OK) + { + /* If the DMA Tx errorCode is different from DMA No Transfer then return Error */ + if(hsai->hdmatx->ErrorCode != HAL_DMA_ERROR_NO_XFER) + { + status = HAL_ERROR; + hsai->ErrorCode |= HAL_SAI_ERROR_DMA; + } + } + } + + /* Abort the SAI Rx DMA Stream */ + if((hsai->hdmarx != NULL) && (hsai->State == HAL_SAI_STATE_BUSY_RX)) + { + if(HAL_DMA_Abort(hsai->hdmarx) != HAL_OK) + { + /* If the DMA Rx errorCode is different from DMA No Transfer then return Error */ + if(hsai->hdmarx->ErrorCode != HAL_DMA_ERROR_NO_XFER) + { + status = HAL_ERROR; + hsai->ErrorCode |= HAL_SAI_ERROR_DMA; + } + } + } + } + + /* Disabled All interrupt and clear all the flag */ + hsai->Instance->IMR = 0U; + hsai->Instance->CLRFR = 0xFFFFFFFFU; + + /* Disable SAI peripheral */ + SAI_Disable(hsai); + + /* Flush the fifo */ + SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH); + + /* Set hsai state to ready */ + hsai->State = HAL_SAI_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return status; +} + +/** + * @brief Transmit an amount of data in non-blocking mode with DMA. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_Transmit_DMA(SAI_HandleTypeDef *hsai, uint8_t *pData, uint16_t Size) +{ + if((pData == NULL) || (Size == 0)) + { + return HAL_ERROR; + } + + if(hsai->State == HAL_SAI_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hsai); + + hsai->pBuffPtr = pData; + hsai->XferSize = Size; + hsai->XferCount = Size; + hsai->ErrorCode = HAL_SAI_ERROR_NONE; + hsai->State = HAL_SAI_STATE_BUSY_TX; + + /* Set the SAI Tx DMA Half transfer complete callback */ + hsai->hdmatx->XferHalfCpltCallback = SAI_DMATxHalfCplt; + + /* Set the SAI TxDMA transfer complete callback */ + hsai->hdmatx->XferCpltCallback = SAI_DMATxCplt; + + /* Set the DMA error callback */ + hsai->hdmatx->XferErrorCallback = SAI_DMAError; + + /* Set the DMA Tx abort callback */ + hsai->hdmatx->XferAbortCallback = NULL; + + /* Enable the Tx DMA Stream */ + if(HAL_DMA_Start_IT(hsai->hdmatx, (uint32_t)hsai->pBuffPtr, (uint32_t)&hsai->Instance->DR, hsai->XferSize) != HAL_OK) + { + __HAL_UNLOCK(hsai); + return HAL_ERROR; + } + + /* Check if the SAI is already enabled */ + if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET) + { + /* Enable SAI peripheral */ + __HAL_SAI_ENABLE(hsai); + } + + /* Enable the interrupts for error handling */ + __HAL_SAI_ENABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_DMA)); + + /* Enable SAI Tx DMA Request */ + hsai->Instance->CR1 |= SAI_xCR1_DMAEN; + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive an amount of data in non-blocking mode with DMA. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param pData Pointer to data buffer + * @param Size Amount of data to be received + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_Receive_DMA(SAI_HandleTypeDef *hsai, uint8_t *pData, uint16_t Size) +{ + if((pData == NULL) || (Size == 0)) + { + return HAL_ERROR; + } + + if(hsai->State == HAL_SAI_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hsai); + + hsai->pBuffPtr = pData; + hsai->XferSize = Size; + hsai->XferCount = Size; + hsai->ErrorCode = HAL_SAI_ERROR_NONE; + hsai->State = HAL_SAI_STATE_BUSY_RX; + + /* Set the SAI Rx DMA Half transfer complete callback */ + hsai->hdmarx->XferHalfCpltCallback = SAI_DMARxHalfCplt; + + /* Set the SAI Rx DMA transfer complete callback */ + hsai->hdmarx->XferCpltCallback = SAI_DMARxCplt; + + /* Set the DMA error callback */ + hsai->hdmarx->XferErrorCallback = SAI_DMAError; + + /* Set the DMA Rx abort callback */ + hsai->hdmarx->XferAbortCallback = NULL; + + /* Enable the Rx DMA Stream */ + if(HAL_DMA_Start_IT(hsai->hdmarx, (uint32_t)&hsai->Instance->DR, (uint32_t)hsai->pBuffPtr, hsai->XferSize) != HAL_OK) + { + __HAL_UNLOCK(hsai); + return HAL_ERROR; + } + + /* Check if the SAI is already enabled */ + if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET) + { + /* Enable SAI peripheral */ + __HAL_SAI_ENABLE(hsai); + } + + /* Enable the interrupts for error handling */ + __HAL_SAI_ENABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_DMA)); + + /* Enable SAI Rx DMA Request */ + hsai->Instance->CR1 |= SAI_xCR1_DMAEN; + + /* Process Unlocked */ + __HAL_UNLOCK(hsai); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Enable the Tx mute mode. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param val value sent during the mute @ref SAI_Block_Mute_Value + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_EnableTxMuteMode(SAI_HandleTypeDef *hsai, uint16_t val) +{ + assert_param(IS_SAI_BLOCK_MUTE_VALUE(val)); + + if(hsai->State != HAL_SAI_STATE_RESET) + { + CLEAR_BIT(hsai->Instance->CR2, SAI_xCR2_MUTEVAL | SAI_xCR2_MUTE); + SET_BIT(hsai->Instance->CR2, SAI_xCR2_MUTE | val); + return HAL_OK; + } + return HAL_ERROR; +} + +/** + * @brief Disable the Tx mute mode. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_DisableTxMuteMode(SAI_HandleTypeDef *hsai) +{ + if(hsai->State != HAL_SAI_STATE_RESET) + { + CLEAR_BIT(hsai->Instance->CR2, SAI_xCR2_MUTEVAL | SAI_xCR2_MUTE); + return HAL_OK; + } + return HAL_ERROR; +} + +/** + * @brief Enable the Rx mute detection. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param callback function called when the mute is detected. + * @param counter number a data before mute detection max 63. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_EnableRxMuteMode(SAI_HandleTypeDef *hsai, SAIcallback callback, uint16_t counter) +{ + assert_param(IS_SAI_BLOCK_MUTE_COUNTER(counter)); + + if(hsai->State != HAL_SAI_STATE_RESET) + { + /* set the mute counter */ + CLEAR_BIT(hsai->Instance->CR2, SAI_xCR2_MUTECNT); + SET_BIT(hsai->Instance->CR2, (uint32_t)((uint32_t)counter << SAI_xCR2_MUTECNT_Pos)); + hsai->mutecallback = callback; + /* enable the IT interrupt */ + __HAL_SAI_ENABLE_IT(hsai, SAI_IT_MUTEDET); + return HAL_OK; + } + return HAL_ERROR; +} + +/** + * @brief Disable the Rx mute detection. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SAI_DisableRxMuteMode(SAI_HandleTypeDef *hsai) +{ + if(hsai->State != HAL_SAI_STATE_RESET) + { + /* set the mutecallback to NULL */ + hsai->mutecallback = (SAIcallback)NULL; + /* enable the IT interrupt */ + __HAL_SAI_DISABLE_IT(hsai, SAI_IT_MUTEDET); + return HAL_OK; + } + return HAL_ERROR; +} + +/** + * @brief Handle SAI interrupt request. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +void HAL_SAI_IRQHandler(SAI_HandleTypeDef *hsai) +{ + if(hsai->State != HAL_SAI_STATE_RESET) + { + uint32_t itflags = hsai->Instance->SR; + uint32_t itsources = hsai->Instance->IMR; + uint32_t cr1config = hsai->Instance->CR1; + uint32_t tmperror; + + /* SAI Fifo request interrupt occured ------------------------------------*/ + if(((itflags & SAI_xSR_FREQ) == SAI_xSR_FREQ) && ((itsources & SAI_IT_FREQ) == SAI_IT_FREQ)) + { + hsai->InterruptServiceRoutine(hsai); + } + /* SAI Overrun error interrupt occurred ----------------------------------*/ + else if(((itflags & SAI_FLAG_OVRUDR) == SAI_FLAG_OVRUDR) && ((itsources & SAI_IT_OVRUDR) == SAI_IT_OVRUDR)) + { + /* Clear the SAI Overrun flag */ + __HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_OVRUDR); + + /* Get the SAI error code */ + tmperror = ((hsai->State == HAL_SAI_STATE_BUSY_RX) ? HAL_SAI_ERROR_OVR : HAL_SAI_ERROR_UDR); + + /* Change the SAI error code */ + hsai->ErrorCode |= tmperror; + + /* the transfer is not stopped, we will forward the information to the user and we let the user decide what needs to be done */ + HAL_SAI_ErrorCallback(hsai); + } + /* SAI mutedet interrupt occurred ----------------------------------*/ + else if(((itflags & SAI_FLAG_MUTEDET) == SAI_FLAG_MUTEDET) && ((itsources & SAI_IT_MUTEDET) == SAI_IT_MUTEDET)) + { + /* Clear the SAI mutedet flag */ + __HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_MUTEDET); + + /* call the call back function */ + if(hsai->mutecallback != (SAIcallback)NULL) + { + /* inform the user that an RX mute event has been detected */ + hsai->mutecallback(); + } + } + /* SAI AFSDET interrupt occurred ----------------------------------*/ + else if(((itflags & SAI_FLAG_AFSDET) == SAI_FLAG_AFSDET) && ((itsources & SAI_IT_AFSDET) == SAI_IT_AFSDET)) + { + /* Change the SAI error code */ + hsai->ErrorCode |= HAL_SAI_ERROR_AFSDET; + + /* Check SAI DMA is enabled or not */ + if((cr1config & SAI_xCR1_DMAEN) == SAI_xCR1_DMAEN) + { + /* Abort the SAI DMA Streams */ + if(hsai->hdmatx != NULL) + { + /* Set the DMA Tx abort callback */ + hsai->hdmatx->XferAbortCallback = SAI_DMAAbort; + + /* Abort DMA in IT mode */ + HAL_DMA_Abort_IT(hsai->hdmatx); + } + else if(hsai->hdmarx != NULL) + { + /* Set the DMA Rx abort callback */ + hsai->hdmarx->XferAbortCallback = SAI_DMAAbort; + + /* Abort DMA in IT mode */ + HAL_DMA_Abort_IT(hsai->hdmarx); + } + } + else + { + /* Abort SAI */ + HAL_SAI_Abort(hsai); + + /* Set error callback */ + HAL_SAI_ErrorCallback(hsai); + } + } + /* SAI LFSDET interrupt occurred ----------------------------------*/ + else if(((itflags & SAI_FLAG_LFSDET) == SAI_FLAG_LFSDET) && ((itsources & SAI_IT_LFSDET) == SAI_IT_LFSDET)) + { + /* Change the SAI error code */ + hsai->ErrorCode |= HAL_SAI_ERROR_LFSDET; + + /* Check SAI DMA is enabled or not */ + if((cr1config & SAI_xCR1_DMAEN) == SAI_xCR1_DMAEN) + { + /* Abort the SAI DMA Streams */ + if(hsai->hdmatx != NULL) + { + /* Set the DMA Tx abort callback */ + hsai->hdmatx->XferAbortCallback = SAI_DMAAbort; + + /* Abort DMA in IT mode */ + HAL_DMA_Abort_IT(hsai->hdmatx); + } + else if(hsai->hdmarx != NULL) + { + /* Set the DMA Rx abort callback */ + hsai->hdmarx->XferAbortCallback = SAI_DMAAbort; + + /* Abort DMA in IT mode */ + HAL_DMA_Abort_IT(hsai->hdmarx); + } + } + else + { + /* Abort SAI */ + HAL_SAI_Abort(hsai); + + /* Set error callback */ + HAL_SAI_ErrorCallback(hsai); + } + } + /* SAI WCKCFG interrupt occurred ----------------------------------*/ + else if(((itflags & SAI_FLAG_WCKCFG) == SAI_FLAG_WCKCFG) && ((itsources & SAI_IT_WCKCFG) == SAI_IT_WCKCFG)) + { + /* Change the SAI error code */ + hsai->ErrorCode |= HAL_SAI_ERROR_WCKCFG; + + /* Check SAI DMA is enabled or not */ + if((cr1config & SAI_xCR1_DMAEN) == SAI_xCR1_DMAEN) + { + /* Abort the SAI DMA Streams */ + if(hsai->hdmatx != NULL) + { + /* Set the DMA Tx abort callback */ + hsai->hdmatx->XferAbortCallback = SAI_DMAAbort; + + /* Abort DMA in IT mode */ + HAL_DMA_Abort_IT(hsai->hdmatx); + } + else if(hsai->hdmarx != NULL) + { + /* Set the DMA Rx abort callback */ + hsai->hdmarx->XferAbortCallback = SAI_DMAAbort; + + /* Abort DMA in IT mode */ + HAL_DMA_Abort_IT(hsai->hdmarx); + } + } + else + { + /* If WCKCFG occurs, SAI audio block is automatically disabled */ + /* Disable all interrupts and clear all flags */ + hsai->Instance->IMR = 0U; + hsai->Instance->CLRFR = 0xFFFFFFFFU; + + /* Set the SAI state to ready to be able to start again the process */ + hsai->State = HAL_SAI_STATE_READY; + + /* Initialize XferCount */ + hsai->XferCount = 0U; + + /* SAI error Callback */ + HAL_SAI_ErrorCallback(hsai); + } + } + /* SAI CNRDY interrupt occurred ----------------------------------*/ + else if(((itflags & SAI_FLAG_CNRDY) == SAI_FLAG_CNRDY) && ((itsources & SAI_IT_CNRDY) == SAI_IT_CNRDY)) + { + /* Clear the SAI CNRDY flag */ + __HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_CNRDY); + + /* Change the SAI error code */ + hsai->ErrorCode |= HAL_SAI_ERROR_CNREADY; + + /* the transfer is not stopped, we will forward the information to the user and we let the user decide what needs to be done */ + HAL_SAI_ErrorCallback(hsai); + } + else + { + /* Nothing to do */ + } + } +} + +/** + * @brief Tx Transfer completed callback. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +__weak void HAL_SAI_TxCpltCallback(SAI_HandleTypeDef *hsai) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hsai); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_SAI_TxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Tx Transfer Half completed callback. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ + __weak void HAL_SAI_TxHalfCpltCallback(SAI_HandleTypeDef *hsai) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hsai); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_SAI_TxHalfCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Rx Transfer completed callback. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +__weak void HAL_SAI_RxCpltCallback(SAI_HandleTypeDef *hsai) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hsai); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_SAI_RxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Rx Transfer half completed callback. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +__weak void HAL_SAI_RxHalfCpltCallback(SAI_HandleTypeDef *hsai) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hsai); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_SAI_RxHalfCpltCallback could be implemented in the user file + */ +} + +/** + * @brief SAI error callback. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +__weak void HAL_SAI_ErrorCallback(SAI_HandleTypeDef *hsai) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hsai); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_SAI_ErrorCallback could be implemented in the user file + */ +} + +/** + * @} + */ + + +/** @defgroup SAI_Exported_Functions_Group3 Peripheral State functions + * @brief Peripheral State functions + * +@verbatim + =============================================================================== + ##### Peripheral State and Errors functions ##### + =============================================================================== + [..] + This subsection permits to get in run-time the status of the peripheral + and the data flow. + +@endverbatim + * @{ + */ + +/** + * @brief Return the SAI handle state. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval HAL state + */ +HAL_SAI_StateTypeDef HAL_SAI_GetState(SAI_HandleTypeDef *hsai) +{ + return hsai->State; +} + +/** +* @brief Return the SAI error code. +* @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for the specified SAI Block. +* @retval SAI Error Code +*/ +uint32_t HAL_SAI_GetError(SAI_HandleTypeDef *hsai) +{ + return hsai->ErrorCode; +} +/** + * @} + */ + +/** + * @} + */ + +/** @addtogroup SAI_Private_Functions + * @brief Private functions + * @{ + */ + +/** + * @brief Initialize the SAI I2S protocol according to the specified parameters + * in the SAI_InitTypeDef and create the associated handle. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param protocol one of the supported protocol. + * @param datasize one of the supported datasize @ref SAI_Protocol_DataSize + * the configuration information for SAI module. + * @param nbslot number of slot minimum value is 2 and max is 16. + * the value must be a multiple of 2. + * @retval HAL status + */ +static HAL_StatusTypeDef SAI_InitI2S(SAI_HandleTypeDef *hsai, uint32_t protocol, uint32_t datasize, uint32_t nbslot) +{ + hsai->Init.Protocol = SAI_FREE_PROTOCOL; + hsai->Init.FirstBit = SAI_FIRSTBIT_MSB; + /* Compute ClockStrobing according AudioMode */ + if((hsai->Init.AudioMode == SAI_MODEMASTER_TX) || (hsai->Init.AudioMode == SAI_MODESLAVE_TX)) + { /* Transmit */ + hsai->Init.ClockStrobing = SAI_CLOCKSTROBING_FALLINGEDGE; + } + else + { /* Receive */ + hsai->Init.ClockStrobing = SAI_CLOCKSTROBING_RISINGEDGE; + } + hsai->FrameInit.FSDefinition = SAI_FS_CHANNEL_IDENTIFICATION; + hsai->SlotInit.SlotActive = SAI_SLOTACTIVE_ALL; + hsai->SlotInit.FirstBitOffset = 0U; + hsai->SlotInit.SlotNumber = nbslot; + + /* in IS2 the number of slot must be even */ + if((nbslot & 0x1U) != 0U) + { + return HAL_ERROR; + } + + switch(protocol) + { + case SAI_I2S_STANDARD : + hsai->FrameInit.FSPolarity = SAI_FS_ACTIVE_LOW; + hsai->FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT; + break; + case SAI_I2S_MSBJUSTIFIED : + case SAI_I2S_LSBJUSTIFIED : + hsai->FrameInit.FSPolarity = SAI_FS_ACTIVE_HIGH; + hsai->FrameInit.FSOffset = SAI_FS_FIRSTBIT; + break; + default : + return HAL_ERROR; + } + + /* Frame definition */ + switch(datasize) + { + case SAI_PROTOCOL_DATASIZE_16BIT: + hsai->Init.DataSize = SAI_DATASIZE_16; + hsai->FrameInit.FrameLength = 32U*(nbslot/2U); + hsai->FrameInit.ActiveFrameLength = 16U*(nbslot/2U); + hsai->SlotInit.SlotSize = SAI_SLOTSIZE_16B; + break; + case SAI_PROTOCOL_DATASIZE_16BITEXTENDED : + hsai->Init.DataSize = SAI_DATASIZE_16; + hsai->FrameInit.FrameLength = 64U*(nbslot/2U); + hsai->FrameInit.ActiveFrameLength = 32U*(nbslot/2U); + hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B; + break; + case SAI_PROTOCOL_DATASIZE_24BIT: + hsai->Init.DataSize = SAI_DATASIZE_24; + hsai->FrameInit.FrameLength = 64U*(nbslot/2U); + hsai->FrameInit.ActiveFrameLength = 32U*(nbslot/2U); + hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B; + break; + case SAI_PROTOCOL_DATASIZE_32BIT: + hsai->Init.DataSize = SAI_DATASIZE_32; + hsai->FrameInit.FrameLength = 64U*(nbslot/2U); + hsai->FrameInit.ActiveFrameLength = 32U*(nbslot/2U); + hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B; + break; + default : + return HAL_ERROR; + } + if(protocol == SAI_I2S_LSBJUSTIFIED) + { + if (datasize == SAI_PROTOCOL_DATASIZE_16BITEXTENDED) + { + hsai->SlotInit.FirstBitOffset = 16U; + } + if (datasize == SAI_PROTOCOL_DATASIZE_24BIT) + { + hsai->SlotInit.FirstBitOffset = 8U; + } + } + return HAL_OK; +} + +/** + * @brief Initialize the SAI PCM protocol according to the specified parameters + * in the SAI_InitTypeDef and create the associated handle. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param protocol one of the supported protocol + * @param datasize one of the supported datasize @ref SAI_Protocol_DataSize + * @param nbslot number of slot minimum value is 1 and the max is 16. + * @retval HAL status + */ +static HAL_StatusTypeDef SAI_InitPCM(SAI_HandleTypeDef *hsai, uint32_t protocol, uint32_t datasize, uint32_t nbslot) +{ + hsai->Init.Protocol = SAI_FREE_PROTOCOL; + hsai->Init.FirstBit = SAI_FIRSTBIT_MSB; + /* Compute ClockStrobing according AudioMode */ + if((hsai->Init.AudioMode == SAI_MODEMASTER_TX) || (hsai->Init.AudioMode == SAI_MODESLAVE_TX)) + { /* Transmit */ + hsai->Init.ClockStrobing = SAI_CLOCKSTROBING_RISINGEDGE; + } + else + { /* Receive */ + hsai->Init.ClockStrobing = SAI_CLOCKSTROBING_FALLINGEDGE; + } + hsai->FrameInit.FSDefinition = SAI_FS_STARTFRAME; + hsai->FrameInit.FSPolarity = SAI_FS_ACTIVE_HIGH; + hsai->FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT; + hsai->SlotInit.FirstBitOffset = 0U; + hsai->SlotInit.SlotNumber = nbslot; + hsai->SlotInit.SlotActive = SAI_SLOTACTIVE_ALL; + + switch(protocol) + { + case SAI_PCM_SHORT : + hsai->FrameInit.ActiveFrameLength = 1U; + break; + case SAI_PCM_LONG : + hsai->FrameInit.ActiveFrameLength = 13U; + break; + default : + return HAL_ERROR; + } + + switch(datasize) + { + case SAI_PROTOCOL_DATASIZE_16BIT: + hsai->Init.DataSize = SAI_DATASIZE_16; + hsai->FrameInit.FrameLength = 16U * nbslot; + hsai->SlotInit.SlotSize = SAI_SLOTSIZE_16B; + break; + case SAI_PROTOCOL_DATASIZE_16BITEXTENDED : + hsai->Init.DataSize = SAI_DATASIZE_16; + hsai->FrameInit.FrameLength = 32U * nbslot; + hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B; + break; + case SAI_PROTOCOL_DATASIZE_24BIT : + hsai->Init.DataSize = SAI_DATASIZE_24; + hsai->FrameInit.FrameLength = 32U * nbslot; + hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B; + break; + case SAI_PROTOCOL_DATASIZE_32BIT: + hsai->Init.DataSize = SAI_DATASIZE_32; + hsai->FrameInit.FrameLength = 32U * nbslot; + hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B; + break; + default : + return HAL_ERROR; + } + + return HAL_OK; +} + +/** + * @brief Fill the fifo. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +static void SAI_FillFifo(SAI_HandleTypeDef *hsai) +{ + /* fill the fifo with data before to enabled the SAI */ + while(((hsai->Instance->SR & SAI_xSR_FLVL) != SAI_FIFOSTATUS_FULL) && (hsai->XferCount > 0U)) + { + if((hsai->Init.DataSize == SAI_DATASIZE_8) && (hsai->Init.CompandingMode == SAI_NOCOMPANDING)) + { + hsai->Instance->DR = (*hsai->pBuffPtr++); + } + else if(hsai->Init.DataSize <= SAI_DATASIZE_16) + { + hsai->Instance->DR = *((uint32_t *)hsai->pBuffPtr); + hsai->pBuffPtr+= 2U; + } + else + { + hsai->Instance->DR = *((uint32_t *)hsai->pBuffPtr); + hsai->pBuffPtr+= 4U; + } + hsai->XferCount--; + } +} + +/** + * @brief Return the interrupt flag to set according the SAI setup. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @param mode SAI_MODE_DMA or SAI_MODE_IT + * @retval the list of the IT flag to enable + */ +static uint32_t SAI_InterruptFlag(SAI_HandleTypeDef *hsai, uint32_t mode) +{ + uint32_t tmpIT = SAI_IT_OVRUDR; + + if(mode == SAI_MODE_IT) + { + tmpIT|= SAI_IT_FREQ; + } + + if((hsai->Init.Protocol == SAI_AC97_PROTOCOL) && + ((hsai->Init.AudioMode == SAI_MODESLAVE_RX) || (hsai->Init.AudioMode == SAI_MODEMASTER_RX))) + { + tmpIT|= SAI_IT_CNRDY; + } + + if((hsai->Init.AudioMode == SAI_MODESLAVE_RX) || (hsai->Init.AudioMode == SAI_MODESLAVE_TX)) + { + tmpIT|= SAI_IT_AFSDET | SAI_IT_LFSDET; + } + else + { + /* hsai has been configured in master mode */ + tmpIT|= SAI_IT_WCKCFG; + } + return tmpIT; +} + +/** + * @brief Disable the SAI and wait for the disabling. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +static HAL_StatusTypeDef SAI_Disable(SAI_HandleTypeDef *hsai) +{ + register uint32_t count = SAI_DEFAULT_TIMEOUT * (SystemCoreClock /7U/1000U); + HAL_StatusTypeDef status = HAL_OK; + + /* Disable the SAI instance */ + __HAL_SAI_DISABLE(hsai); + + do + { + /* Check for the Timeout */ + if (count-- == 0U) + { + /* Update error code */ + hsai->ErrorCode |= HAL_SAI_ERROR_TIMEOUT; + status = HAL_TIMEOUT; + break; + } + } while((hsai->Instance->CR1 & SAI_xCR1_SAIEN) != RESET); + + return status; +} + +/** + * @brief Tx Handler for Transmit in Interrupt mode 8-Bit transfer. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +static void SAI_Transmit_IT8Bit(SAI_HandleTypeDef *hsai) +{ + if(hsai->XferCount == 0U) + { + /* Handle the end of the transmission */ + /* Disable FREQ and OVRUDR interrupts */ + __HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT)); + hsai->State = HAL_SAI_STATE_READY; + HAL_SAI_TxCpltCallback(hsai); + } + else + { + /* Write data on DR register */ + hsai->Instance->DR = (*hsai->pBuffPtr++); + hsai->XferCount--; + } +} + +/** + * @brief Tx Handler for Transmit in Interrupt mode for 16-Bit transfer. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +static void SAI_Transmit_IT16Bit(SAI_HandleTypeDef *hsai) +{ + if(hsai->XferCount == 0U) + { + /* Handle the end of the transmission */ + /* Disable FREQ and OVRUDR interrupts */ + __HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT)); + hsai->State = HAL_SAI_STATE_READY; + HAL_SAI_TxCpltCallback(hsai); + } + else + { + /* Write data on DR register */ + hsai->Instance->DR = *(uint16_t *)hsai->pBuffPtr; + hsai->pBuffPtr+=2U; + hsai->XferCount--; + } +} + +/** + * @brief Tx Handler for Transmit in Interrupt mode for 32-Bit transfer. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +static void SAI_Transmit_IT32Bit(SAI_HandleTypeDef *hsai) +{ + if(hsai->XferCount == 0U) + { + /* Handle the end of the transmission */ + /* Disable FREQ and OVRUDR interrupts */ + __HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT)); + hsai->State = HAL_SAI_STATE_READY; + HAL_SAI_TxCpltCallback(hsai); + } + else + { + /* Write data on DR register */ + hsai->Instance->DR = *(uint32_t *)hsai->pBuffPtr; + hsai->pBuffPtr+=4U; + hsai->XferCount--; + } +} + +/** + * @brief Rx Handler for Receive in Interrupt mode 8-Bit transfer. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +static void SAI_Receive_IT8Bit(SAI_HandleTypeDef *hsai) +{ + /* Receive data */ + (*hsai->pBuffPtr++) = hsai->Instance->DR; + hsai->XferCount--; + + /* Check end of the transfer */ + if(hsai->XferCount == 0U) + { + /* Disable TXE and OVRUDR interrupts */ + __HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT)); + + /* Clear the SAI Overrun flag */ + __HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_OVRUDR); + + hsai->State = HAL_SAI_STATE_READY; + HAL_SAI_RxCpltCallback(hsai); + } +} + +/** + * @brief Rx Handler for Receive in Interrupt mode for 16-Bit transfer. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +static void SAI_Receive_IT16Bit(SAI_HandleTypeDef *hsai) +{ + /* Receive data */ + *(uint16_t*)hsai->pBuffPtr = hsai->Instance->DR; + hsai->pBuffPtr+=2U; + hsai->XferCount--; + + /* Check end of the transfer */ + if(hsai->XferCount == 0U) + { + /* Disable TXE and OVRUDR interrupts */ + __HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT)); + + /* Clear the SAI Overrun flag */ + __HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_OVRUDR); + + hsai->State = HAL_SAI_STATE_READY; + HAL_SAI_RxCpltCallback(hsai); + } +} + +/** + * @brief Rx Handler for Receive in Interrupt mode for 32-Bit transfer. + * @param hsai pointer to a SAI_HandleTypeDef structure that contains + * the configuration information for SAI module. + * @retval None + */ +static void SAI_Receive_IT32Bit(SAI_HandleTypeDef *hsai) +{ + /* Receive data */ + *(uint32_t*)hsai->pBuffPtr = hsai->Instance->DR; + hsai->pBuffPtr+=4U; + hsai->XferCount--; + + /* Check end of the transfer */ + if(hsai->XferCount == 0U) + { + /* Disable TXE and OVRUDR interrupts */ + __HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT)); + + /* Clear the SAI Overrun flag */ + __HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_OVRUDR); + + hsai->State = HAL_SAI_STATE_READY; + HAL_SAI_RxCpltCallback(hsai); + } +} + +/** + * @brief DMA SAI transmit process complete callback. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SAI_DMATxCplt(DMA_HandleTypeDef *hdma) +{ + SAI_HandleTypeDef* hsai = (SAI_HandleTypeDef*)((DMA_HandleTypeDef* )hdma)->Parent; + + if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) + { + hsai->XferCount = 0U; + + /* Disable SAI Tx DMA Request */ + hsai->Instance->CR1 &= (uint32_t)(~SAI_xCR1_DMAEN); + + /* Stop the interrupts error handling */ + __HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_DMA)); + + hsai->State= HAL_SAI_STATE_READY; + } + HAL_SAI_TxCpltCallback(hsai); +} + +/** + * @brief DMA SAI transmit process half complete callback. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SAI_DMATxHalfCplt(DMA_HandleTypeDef *hdma) +{ + SAI_HandleTypeDef* hsai = (SAI_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; + + HAL_SAI_TxHalfCpltCallback(hsai); +} + +/** + * @brief DMA SAI receive process complete callback. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SAI_DMARxCplt(DMA_HandleTypeDef *hdma) +{ + SAI_HandleTypeDef* hsai = ( SAI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) + { + /* Disable Rx DMA Request */ + hsai->Instance->CR1 &= (uint32_t)(~SAI_xCR1_DMAEN); + hsai->XferCount = 0U; + + /* Stop the interrupts error handling */ + __HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_DMA)); + + hsai->State = HAL_SAI_STATE_READY; + } + HAL_SAI_RxCpltCallback(hsai); +} + +/** + * @brief DMA SAI receive process half complete callback + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SAI_DMARxHalfCplt(DMA_HandleTypeDef *hdma) +{ + SAI_HandleTypeDef* hsai = (SAI_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; + + HAL_SAI_RxHalfCpltCallback(hsai); +} + +/** + * @brief DMA SAI communication error callback. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SAI_DMAError(DMA_HandleTypeDef *hdma) +{ + SAI_HandleTypeDef* hsai = ( SAI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Set SAI error code */ + hsai->ErrorCode |= HAL_SAI_ERROR_DMA; + + if((hsai->hdmatx->ErrorCode == HAL_DMA_ERROR_TE) || (hsai->hdmarx->ErrorCode == HAL_DMA_ERROR_TE)) + { + /* Disable the SAI DMA request */ + hsai->Instance->CR1 &= ~SAI_xCR1_DMAEN; + + /* Disable SAI peripheral */ + SAI_Disable(hsai); + + /* Set the SAI state ready to be able to start again the process */ + hsai->State = HAL_SAI_STATE_READY; + + /* Initialize XferCount */ + hsai->XferCount = 0U; + } + /* SAI error Callback */ + HAL_SAI_ErrorCallback(hsai); +} + +/** + * @brief DMA SAI Abort callback. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SAI_DMAAbort(DMA_HandleTypeDef *hdma) +{ + SAI_HandleTypeDef* hsai = ( SAI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Disable DMA request */ + hsai->Instance->CR1 &= ~SAI_xCR1_DMAEN; + + /* Disable all interrupts and clear all flags */ + hsai->Instance->IMR = 0U; + hsai->Instance->CLRFR = 0xFFFFFFFFU; + + if(hsai->ErrorCode != HAL_SAI_ERROR_WCKCFG) + { + /* Disable SAI peripheral */ + SAI_Disable(hsai); + + /* Flush the fifo */ + SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH); + } + /* Set the SAI state to ready to be able to start again the process */ + hsai->State = HAL_SAI_STATE_READY; + + /* Initialize XferCount */ + hsai->XferCount = 0U; + + /* SAI error Callback */ + HAL_SAI_ErrorCallback(hsai); +} + +/** + * @} + */ + +#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx || STM32F479xx || STM32F413xx || STM32F423xx */ +#endif /* HAL_SAI_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/