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Diffstat (limited to 'fw/hid-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_i2s.c')
| -rw-r--r-- | fw/hid-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_i2s.c | 1800 |
1 files changed, 1800 insertions, 0 deletions
diff --git a/fw/hid-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_i2s.c b/fw/hid-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_i2s.c new file mode 100644 index 0000000..55aff5e --- /dev/null +++ b/fw/hid-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_i2s.c @@ -0,0 +1,1800 @@ +/**
+ ******************************************************************************
+ * @file stm32f0xx_hal_i2s.c
+ * @author MCD Application Team
+ * @brief I2S HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Integrated Interchip Sound (I2S) peripheral:
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral State and Errors functions
+ @verbatim
+ ===============================================================================
+ ##### How to use this driver #####
+ ===============================================================================
+ [..]
+ The I2S HAL driver can be used as follow:
+
+ (#) Declare a I2S_HandleTypeDef handle structure.
+ (#) Initialize the I2S low level resources by implement the HAL_I2S_MspInit() API:
+ (##) Enable the SPIx interface clock.
+ (##) I2S pins configuration:
+ (+++) Enable the clock for the I2S GPIOs.
+ (+++) Configure these I2S pins as alternate function pull-up.
+ (##) NVIC configuration if you need to use interrupt process (HAL_I2S_Transmit_IT()
+ and HAL_I2S_Receive_IT() APIs).
+ (+++) Configure the I2Sx interrupt priority.
+ (+++) Enable the NVIC I2S IRQ handle.
+ (##) DMA Configuration if you need to use DMA process (HAL_I2S_Transmit_DMA()
+ and HAL_I2S_Receive_DMA() APIs:
+ (+++) Declare a DMA handle structure for the Tx/Rx Stream/Channel.
+ (+++) Enable the DMAx interface clock.
+ (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
+ (+++) Configure the DMA Tx/Rx Stream/Channel.
+ (+++) Associate the initialized DMA handle to the I2S DMA Tx/Rx handle.
+ (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the
+ DMA Tx/Rx Stream/Channel.
+
+ (#) Program the Mode, Standard, Data Format, MCLK Output, Audio frequency and Polarity
+ using HAL_I2S_Init() function.
+
+ -@- The specific I2S interrupts (Transmission complete interrupt,
+ RXNE interrupt and Error Interrupts) will be managed using the macros
+ __HAL_I2S_ENABLE_IT() and __HAL_I2S_DISABLE_IT() inside the transmit and receive process.
+ -@- Make sure that either:
+ (+@) External clock source is configured after setting correctly
+ the define constant EXTERNAL_CLOCK_VALUE in the stm32f0xx_hal_conf.h file.
+
+ (#) Three mode of operations are available within this driver :
+
+ *** Polling mode IO operation ***
+ =================================
+ [..]
+ (+) Send an amount of data in blocking mode using HAL_I2S_Transmit()
+ (+) Receive an amount of data in blocking mode using HAL_I2S_Receive()
+
+ *** Interrupt mode IO operation ***
+ ===================================
+ [..]
+ (+) Send an amount of data in non blocking mode using HAL_I2S_Transmit_IT()
+ (+) At transmission end of half transfer HAL_I2S_TxHalfCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2S_TxHalfCpltCallback
+ (+) At transmission end of transfer HAL_I2S_TxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2S_TxCpltCallback
+ (+) Receive an amount of data in non blocking mode using HAL_I2S_Receive_IT()
+ (+) At reception end of half transfer HAL_I2S_RxHalfCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2S_RxHalfCpltCallback
+ (+) At reception end of transfer HAL_I2S_RxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2S_RxCpltCallback
+ (+) In case of transfer Error, HAL_I2S_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_I2S_ErrorCallback
+
+ *** DMA mode IO operation ***
+ ==============================
+ [..]
+ (+) Send an amount of data in non blocking mode (DMA) using HAL_I2S_Transmit_DMA()
+ (+) At transmission end of half transfer HAL_I2S_TxHalfCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2S_TxHalfCpltCallback
+ (+) At transmission end of transfer HAL_I2S_TxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2S_TxCpltCallback
+ (+) Receive an amount of data in non blocking mode (DMA) using HAL_I2S_Receive_DMA()
+ (+) At reception end of half transfer HAL_I2S_RxHalfCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2S_RxHalfCpltCallback
+ (+) At reception end of transfer HAL_I2S_RxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2S_RxCpltCallback
+ (+) In case of transfer Error, HAL_I2S_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_I2S_ErrorCallback
+ (+) Pause the DMA Transfer using HAL_I2S_DMAPause()
+ (+) Resume the DMA Transfer using HAL_I2S_DMAResume()
+ (+) Stop the DMA Transfer using HAL_I2S_DMAStop()
+
+ *** I2S HAL driver macros list ***
+ ===================================
+ [..]
+ Below the list of most used macros in I2S HAL driver.
+
+ (+) __HAL_I2S_ENABLE: Enable the specified SPI peripheral (in I2S mode)
+ (+) __HAL_I2S_DISABLE: Disable the specified SPI peripheral (in I2S mode)
+ (+) __HAL_I2S_ENABLE_IT : Enable the specified I2S interrupts
+ (+) __HAL_I2S_DISABLE_IT : Disable the specified I2S interrupts
+ (+) __HAL_I2S_GET_FLAG: Check whether the specified I2S flag is set or not
+
+ [..]
+ (@) You can refer to the I2S HAL driver header file for more useful macros
+
+ *** I2S HAL driver macros list ***
+ ===================================
+ [..]
+ Callback registration:
+
+ (#) The compilation flag USE_HAL_I2S_REGISTER_CALLBACKS when set to 1U
+ allows the user to configure dynamically the driver callbacks.
+ Use Functions HAL_I2S_RegisterCallback() to register an interrupt callback.
+
+ Function HAL_I2S_RegisterCallback() allows to register following callbacks:
+ (++) TxCpltCallback : I2S Tx Completed callback
+ (++) RxCpltCallback : I2S Rx Completed callback
+ (++) TxHalfCpltCallback : I2S Tx Half Completed callback
+ (++) RxHalfCpltCallback : I2S Rx Half Completed callback
+ (++) ErrorCallback : I2S Error callback
+ (++) MspInitCallback : I2S Msp Init callback
+ (++) MspDeInitCallback : I2S Msp DeInit callback
+ This function takes as parameters the HAL peripheral handle, the Callback ID
+ and a pointer to the user callback function.
+
+
+ (#) Use function HAL_I2S_UnRegisterCallback to reset a callback to the default
+ weak function.
+ HAL_I2S_UnRegisterCallback takes as parameters the HAL peripheral handle,
+ and the Callback ID.
+ This function allows to reset following callbacks:
+ (++) TxCpltCallback : I2S Tx Completed callback
+ (++) RxCpltCallback : I2S Rx Completed callback
+ (++) TxHalfCpltCallback : I2S Tx Half Completed callback
+ (++) RxHalfCpltCallback : I2S Rx Half Completed callback
+ (++) ErrorCallback : I2S Error callback
+ (++) MspInitCallback : I2S Msp Init callback
+ (++) MspDeInitCallback : I2S Msp DeInit callback
+
+ [..]
+ By default, after the HAL_I2S_Init() and when the state is HAL_I2S_STATE_RESET
+ all callbacks are set to the corresponding weak functions:
+ examples HAL_I2S_MasterTxCpltCallback(), HAL_I2S_MasterRxCpltCallback().
+ Exception done for MspInit and MspDeInit functions that are
+ reset to the legacy weak functions in the HAL_I2S_Init()/ HAL_I2S_DeInit() only when
+ these callbacks are null (not registered beforehand).
+ If MspInit or MspDeInit are not null, the HAL_I2S_Init()/ HAL_I2S_DeInit()
+ keep and use the user MspInit/MspDeInit callbacks (registered beforehand) whatever the state.
+
+ [..]
+ Callbacks can be registered/unregistered in HAL_I2S_STATE_READY state only.
+ Exception done MspInit/MspDeInit functions that can be registered/unregistered
+ in HAL_I2S_STATE_READY or HAL_I2S_STATE_RESET state,
+ thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit.
+ Then, the user first registers the MspInit/MspDeInit user callbacks
+ using HAL_I2S_RegisterCallback() before calling HAL_I2S_DeInit()
+ or HAL_I2S_Init() function.
+
+ [..]
+ When the compilation define USE_HAL_I2S_REGISTER_CALLBACKS is set to 0 or
+ not defined, the callback registering feature is not available
+ and weak (surcharged) callbacks are used.
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2016 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f0xx_hal.h"
+
+#ifdef HAL_I2S_MODULE_ENABLED
+
+#if defined(SPI_I2S_SUPPORT)
+/** @addtogroup STM32F0xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup I2S I2S
+ * @brief I2S HAL module driver
+ * @{
+ */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @defgroup I2S_Private_Functions I2S Private Functions
+ * @{
+ */
+static void I2S_DMATxCplt(DMA_HandleTypeDef *hdma);
+static void I2S_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
+static void I2S_DMARxCplt(DMA_HandleTypeDef *hdma);
+static void I2S_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
+static void I2S_DMAError(DMA_HandleTypeDef *hdma);
+static void I2S_Transmit_IT(I2S_HandleTypeDef *hi2s);
+static void I2S_Receive_IT(I2S_HandleTypeDef *hi2s);
+static HAL_StatusTypeDef I2S_WaitFlagStateUntilTimeout(I2S_HandleTypeDef *hi2s, uint32_t Flag, FlagStatus State,
+ uint32_t Timeout);
+/**
+ * @}
+ */
+
+/* Exported functions ---------------------------------------------------------*/
+
+/** @defgroup I2S_Exported_Functions I2S Exported Functions
+ * @{
+ */
+
+/** @defgroup I2S_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 I2Sx peripheral in simplex mode:
+
+ (+) User must Implement HAL_I2S_MspInit() function in which he configures
+ all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC ).
+
+ (+) Call the function HAL_I2S_Init() to configure the selected device with
+ the selected configuration:
+ (++) Mode
+ (++) Standard
+ (++) Data Format
+ (++) MCLK Output
+ (++) Audio frequency
+ (++) Polarity
+
+ (+) Call the function HAL_I2S_DeInit() to restore the default configuration
+ of the selected I2Sx peripheral.
+ @endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the I2S according to the specified parameters
+ * in the I2S_InitTypeDef and create the associated handle.
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_Init(I2S_HandleTypeDef *hi2s)
+{
+ uint32_t i2sdiv;
+ uint32_t i2sodd;
+ uint32_t packetlength;
+ uint32_t tmp;
+ uint32_t i2sclk;
+
+ /* Check the I2S handle allocation */
+ if (hi2s == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the I2S parameters */
+ assert_param(IS_I2S_ALL_INSTANCE(hi2s->Instance));
+ assert_param(IS_I2S_MODE(hi2s->Init.Mode));
+ assert_param(IS_I2S_STANDARD(hi2s->Init.Standard));
+ assert_param(IS_I2S_DATA_FORMAT(hi2s->Init.DataFormat));
+ assert_param(IS_I2S_MCLK_OUTPUT(hi2s->Init.MCLKOutput));
+ assert_param(IS_I2S_AUDIO_FREQ(hi2s->Init.AudioFreq));
+ assert_param(IS_I2S_CPOL(hi2s->Init.CPOL));
+
+ if (hi2s->State == HAL_I2S_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ hi2s->Lock = HAL_UNLOCKED;
+
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+ /* Init the I2S Callback settings */
+ hi2s->TxCpltCallback = HAL_I2S_TxCpltCallback; /* Legacy weak TxCpltCallback */
+ hi2s->RxCpltCallback = HAL_I2S_RxCpltCallback; /* Legacy weak RxCpltCallback */
+ hi2s->TxHalfCpltCallback = HAL_I2S_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */
+ hi2s->RxHalfCpltCallback = HAL_I2S_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */
+ hi2s->ErrorCallback = HAL_I2S_ErrorCallback; /* Legacy weak ErrorCallback */
+
+ if (hi2s->MspInitCallback == NULL)
+ {
+ hi2s->MspInitCallback = HAL_I2S_MspInit; /* Legacy weak MspInit */
+ }
+
+ /* Init the low level hardware : GPIO, CLOCK, NVIC... */
+ hi2s->MspInitCallback(hi2s);
+#else
+ /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */
+ HAL_I2S_MspInit(hi2s);
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+ }
+
+ hi2s->State = HAL_I2S_STATE_BUSY;
+
+ /*----------------------- SPIx I2SCFGR & I2SPR Configuration ----------------*/
+ /* Clear I2SMOD, I2SE, I2SCFG, PCMSYNC, I2SSTD, CKPOL, DATLEN and CHLEN bits */
+ CLEAR_BIT(hi2s->Instance->I2SCFGR, (SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CKPOL | \
+ SPI_I2SCFGR_I2SSTD | SPI_I2SCFGR_PCMSYNC | SPI_I2SCFGR_I2SCFG | \
+ SPI_I2SCFGR_I2SE | SPI_I2SCFGR_I2SMOD));
+ hi2s->Instance->I2SPR = 0x0002U;
+
+ /*----------------------- I2SPR: I2SDIV and ODD Calculation -----------------*/
+ /* If the requested audio frequency is not the default, compute the prescaler */
+ if (hi2s->Init.AudioFreq != I2S_AUDIOFREQ_DEFAULT)
+ {
+ /* Check the frame length (For the Prescaler computing) ********************/
+ if (hi2s->Init.DataFormat == I2S_DATAFORMAT_16B)
+ {
+ /* Packet length is 16 bits */
+ packetlength = 16U;
+ }
+ else
+ {
+ /* Packet length is 32 bits */
+ packetlength = 32U;
+ }
+
+ /* I2S standard */
+ if (hi2s->Init.Standard <= I2S_STANDARD_LSB)
+ {
+ /* In I2S standard packet lenght is multiplied by 2 */
+ packetlength = packetlength * 2U;
+ }
+
+ /* Get the source clock value: based on System Clock value */
+ i2sclk = HAL_RCC_GetSysClockFreq();
+
+ /* Compute the Real divider depending on the MCLK output state, with a floating point */
+ if (hi2s->Init.MCLKOutput == I2S_MCLKOUTPUT_ENABLE)
+ {
+ /* MCLK output is enabled */
+ if (hi2s->Init.DataFormat != I2S_DATAFORMAT_16B)
+ {
+ tmp = (uint32_t)(((((i2sclk / (packetlength * 4U)) * 10U) / hi2s->Init.AudioFreq)) + 5U);
+ }
+ else
+ {
+ tmp = (uint32_t)(((((i2sclk / (packetlength * 8U)) * 10U) / hi2s->Init.AudioFreq)) + 5U);
+ }
+ }
+ else
+ {
+ /* MCLK output is disabled */
+ tmp = (uint32_t)(((((i2sclk / packetlength) * 10U) / hi2s->Init.AudioFreq)) + 5U);
+ }
+
+ /* Remove the flatting point */
+ tmp = tmp / 10U;
+
+ /* Check the parity of the divider */
+ i2sodd = (uint32_t)(tmp & (uint32_t)1U);
+
+ /* Compute the i2sdiv prescaler */
+ i2sdiv = (uint32_t)((tmp - i2sodd) / 2U);
+
+ /* Get the Mask for the Odd bit (SPI_I2SPR[8]) register */
+ i2sodd = (uint32_t)(i2sodd << 8U);
+ }
+ else
+ {
+ /* Set the default values */
+ i2sdiv = 2U;
+ i2sodd = 0U;
+ }
+
+ /* Test if the divider is 1 or 0 or greater than 0xFF */
+ if ((i2sdiv < 2U) || (i2sdiv > 0xFFU))
+ {
+ /* Set the error code and execute error callback*/
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_PRESCALER);
+ return HAL_ERROR;
+ }
+
+ /*----------------------- SPIx I2SCFGR & I2SPR Configuration ----------------*/
+
+ /* Write to SPIx I2SPR register the computed value */
+ hi2s->Instance->I2SPR = (uint32_t)((uint32_t)i2sdiv | (uint32_t)(i2sodd | (uint32_t)hi2s->Init.MCLKOutput));
+
+ /* Clear I2SMOD, I2SE, I2SCFG, PCMSYNC, I2SSTD, CKPOL, DATLEN and CHLEN bits */
+ /* And configure the I2S with the I2S_InitStruct values */
+ MODIFY_REG(hi2s->Instance->I2SCFGR, (SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN | \
+ SPI_I2SCFGR_CKPOL | SPI_I2SCFGR_I2SSTD | \
+ SPI_I2SCFGR_PCMSYNC | SPI_I2SCFGR_I2SCFG | \
+ SPI_I2SCFGR_I2SE | SPI_I2SCFGR_I2SMOD), \
+ (SPI_I2SCFGR_I2SMOD | hi2s->Init.Mode | \
+ hi2s->Init.Standard | hi2s->Init.DataFormat | \
+ hi2s->Init.CPOL));
+
+#if defined(SPI_I2SCFGR_ASTRTEN)
+ if ((hi2s->Init.Standard == I2S_STANDARD_PCM_SHORT) || ((hi2s->Init.Standard == I2S_STANDARD_PCM_LONG)))
+ {
+ /* Write to SPIx I2SCFGR */
+ SET_BIT(hi2s->Instance->I2SCFGR, SPI_I2SCFGR_ASTRTEN);
+ }
+#endif /* SPI_I2SCFGR_ASTRTEN */
+
+ hi2s->ErrorCode = HAL_I2S_ERROR_NONE;
+ hi2s->State = HAL_I2S_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DeInitializes the I2S peripheral
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_DeInit(I2S_HandleTypeDef *hi2s)
+{
+ /* Check the I2S handle allocation */
+ if (hi2s == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_I2S_ALL_INSTANCE(hi2s->Instance));
+
+ hi2s->State = HAL_I2S_STATE_BUSY;
+
+ /* Disable the I2S Peripheral Clock */
+ __HAL_I2S_DISABLE(hi2s);
+
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+ if (hi2s->MspDeInitCallback == NULL)
+ {
+ hi2s->MspDeInitCallback = HAL_I2S_MspDeInit; /* Legacy weak MspDeInit */
+ }
+
+ /* DeInit the low level hardware: GPIO, CLOCK, NVIC... */
+ hi2s->MspDeInitCallback(hi2s);
+#else
+ /* DeInit the low level hardware: GPIO, CLOCK, NVIC... */
+ HAL_I2S_MspDeInit(hi2s);
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+
+ hi2s->ErrorCode = HAL_I2S_ERROR_NONE;
+ hi2s->State = HAL_I2S_STATE_RESET;
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2s);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief I2S MSP Init
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval None
+ */
+__weak void HAL_I2S_MspInit(I2S_HandleTypeDef *hi2s)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2s);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2S_MspInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief I2S MSP DeInit
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval None
+ */
+__weak void HAL_I2S_MspDeInit(I2S_HandleTypeDef *hi2s)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2s);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2S_MspDeInit could be implemented in the user file
+ */
+}
+
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+/**
+ * @brief Register a User I2S Callback
+ * To be used instead of the weak predefined callback
+ * @param hi2s Pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for the specified I2S.
+ * @param CallbackID ID of the callback to be registered
+ * @param pCallback pointer to the Callback function
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_RegisterCallback(I2S_HandleTypeDef *hi2s, HAL_I2S_CallbackIDTypeDef CallbackID,
+ pI2S_CallbackTypeDef pCallback)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if (pCallback == NULL)
+ {
+ /* Update the error code */
+ hi2s->ErrorCode |= HAL_I2S_ERROR_INVALID_CALLBACK;
+
+ return HAL_ERROR;
+ }
+ /* Process locked */
+ __HAL_LOCK(hi2s);
+
+ if (HAL_I2S_STATE_READY == hi2s->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2S_TX_COMPLETE_CB_ID :
+ hi2s->TxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2S_RX_COMPLETE_CB_ID :
+ hi2s->RxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2S_TX_HALF_COMPLETE_CB_ID :
+ hi2s->TxHalfCpltCallback = pCallback;
+ break;
+
+ case HAL_I2S_RX_HALF_COMPLETE_CB_ID :
+ hi2s->RxHalfCpltCallback = pCallback;
+ break;
+
+ case HAL_I2S_ERROR_CB_ID :
+ hi2s->ErrorCallback = pCallback;
+ break;
+
+ case HAL_I2S_MSPINIT_CB_ID :
+ hi2s->MspInitCallback = pCallback;
+ break;
+
+ case HAL_I2S_MSPDEINIT_CB_ID :
+ hi2s->MspDeInitCallback = pCallback;
+ break;
+
+ default :
+ /* Update the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_INVALID_CALLBACK);
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else if (HAL_I2S_STATE_RESET == hi2s->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2S_MSPINIT_CB_ID :
+ hi2s->MspInitCallback = pCallback;
+ break;
+
+ case HAL_I2S_MSPDEINIT_CB_ID :
+ hi2s->MspDeInitCallback = pCallback;
+ break;
+
+ default :
+ /* Update the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_INVALID_CALLBACK);
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else
+ {
+ /* Update the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_INVALID_CALLBACK);
+
+ /* Return error status */
+ status = HAL_ERROR;
+ }
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2s);
+ return status;
+}
+
+/**
+ * @brief Unregister an I2S Callback
+ * I2S callback is redirected to the weak predefined callback
+ * @param hi2s Pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for the specified I2S.
+ * @param CallbackID ID of the callback to be unregistered
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_UnRegisterCallback(I2S_HandleTypeDef *hi2s, HAL_I2S_CallbackIDTypeDef CallbackID)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Process locked */
+ __HAL_LOCK(hi2s);
+
+ if (HAL_I2S_STATE_READY == hi2s->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2S_TX_COMPLETE_CB_ID :
+ hi2s->TxCpltCallback = HAL_I2S_TxCpltCallback; /* Legacy weak TxCpltCallback */
+ break;
+
+ case HAL_I2S_RX_COMPLETE_CB_ID :
+ hi2s->RxCpltCallback = HAL_I2S_RxCpltCallback; /* Legacy weak RxCpltCallback */
+ break;
+
+ case HAL_I2S_TX_HALF_COMPLETE_CB_ID :
+ hi2s->TxHalfCpltCallback = HAL_I2S_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */
+ break;
+
+ case HAL_I2S_RX_HALF_COMPLETE_CB_ID :
+ hi2s->RxHalfCpltCallback = HAL_I2S_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */
+ break;
+
+ case HAL_I2S_ERROR_CB_ID :
+ hi2s->ErrorCallback = HAL_I2S_ErrorCallback; /* Legacy weak ErrorCallback */
+ break;
+
+ case HAL_I2S_MSPINIT_CB_ID :
+ hi2s->MspInitCallback = HAL_I2S_MspInit; /* Legacy weak MspInit */
+ break;
+
+ case HAL_I2S_MSPDEINIT_CB_ID :
+ hi2s->MspDeInitCallback = HAL_I2S_MspDeInit; /* Legacy weak MspDeInit */
+ break;
+
+ default :
+ /* Update the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_INVALID_CALLBACK);
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else if (HAL_I2S_STATE_RESET == hi2s->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2S_MSPINIT_CB_ID :
+ hi2s->MspInitCallback = HAL_I2S_MspInit; /* Legacy weak MspInit */
+ break;
+
+ case HAL_I2S_MSPDEINIT_CB_ID :
+ hi2s->MspDeInitCallback = HAL_I2S_MspDeInit; /* Legacy weak MspDeInit */
+ break;
+
+ default :
+ /* Update the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_INVALID_CALLBACK);
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else
+ {
+ /* Update the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_INVALID_CALLBACK);
+
+ /* Return error status */
+ status = HAL_ERROR;
+ }
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2s);
+ return status;
+}
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+/**
+ * @}
+ */
+
+/** @defgroup I2S_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 I2S 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 I2S IRQ when using Interrupt mode or the DMA IRQ when
+ using DMA mode.
+
+ (#) Blocking mode functions are :
+ (++) HAL_I2S_Transmit()
+ (++) HAL_I2S_Receive()
+
+ (#) No-Blocking mode functions with Interrupt are :
+ (++) HAL_I2S_Transmit_IT()
+ (++) HAL_I2S_Receive_IT()
+
+ (#) No-Blocking mode functions with DMA are :
+ (++) HAL_I2S_Transmit_DMA()
+ (++) HAL_I2S_Receive_DMA()
+
+ (#) A set of Transfer Complete Callbacks are provided in non Blocking mode:
+ (++) HAL_I2S_TxCpltCallback()
+ (++) HAL_I2S_RxCpltCallback()
+ (++) HAL_I2S_ErrorCallback()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Transmit an amount of data in blocking mode
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @param pData a 16-bit pointer to data buffer.
+ * @param Size number of data sample to be sent:
+ * @note When a 16-bit data frame or a 16-bit data frame extended is selected during the I2S
+ * configuration phase, the Size parameter means the number of 16-bit data length
+ * in the transaction and when a 24-bit data frame or a 32-bit data frame is selected
+ * the Size parameter means the number of 16-bit data length.
+ * @param Timeout Timeout duration
+ * @note The I2S is kept enabled at the end of transaction to avoid the clock de-synchronization
+ * between Master and Slave(example: audio streaming).
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_Transmit(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t tmpreg_cfgr;
+
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2s);
+
+ if (hi2s->State != HAL_I2S_STATE_READY)
+ {
+ __HAL_UNLOCK(hi2s);
+ return HAL_BUSY;
+ }
+
+ /* Set state and reset error code */
+ hi2s->State = HAL_I2S_STATE_BUSY_TX;
+ hi2s->ErrorCode = HAL_I2S_ERROR_NONE;
+ hi2s->pTxBuffPtr = pData;
+
+ tmpreg_cfgr = hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN);
+
+ if ((tmpreg_cfgr == I2S_DATAFORMAT_24B) || (tmpreg_cfgr == I2S_DATAFORMAT_32B))
+ {
+ hi2s->TxXferSize = (Size << 1U);
+ hi2s->TxXferCount = (Size << 1U);
+ }
+ else
+ {
+ hi2s->TxXferSize = Size;
+ hi2s->TxXferCount = Size;
+ }
+
+ tmpreg_cfgr = hi2s->Instance->I2SCFGR;
+
+ /* Check if the I2S is already enabled */
+ if ((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE)
+ {
+ /* Enable I2S peripheral */
+ __HAL_I2S_ENABLE(hi2s);
+ }
+
+ /* Wait until TXE flag is set */
+ if (I2S_WaitFlagStateUntilTimeout(hi2s, I2S_FLAG_TXE, SET, Timeout) != HAL_OK)
+ {
+ /* Set the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_TIMEOUT);
+ hi2s->State = HAL_I2S_STATE_READY;
+ __HAL_UNLOCK(hi2s);
+ return HAL_ERROR;
+ }
+
+ while (hi2s->TxXferCount > 0U)
+ {
+ hi2s->Instance->DR = (*hi2s->pTxBuffPtr);
+ hi2s->pTxBuffPtr++;
+ hi2s->TxXferCount--;
+
+ /* Wait until TXE flag is set */
+ if (I2S_WaitFlagStateUntilTimeout(hi2s, I2S_FLAG_TXE, SET, Timeout) != HAL_OK)
+ {
+ /* Set the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_TIMEOUT);
+ hi2s->State = HAL_I2S_STATE_READY;
+ __HAL_UNLOCK(hi2s);
+ return HAL_ERROR;
+ }
+
+ /* Check if an underrun occurs */
+ if (__HAL_I2S_GET_FLAG(hi2s, I2S_FLAG_UDR) == SET)
+ {
+ /* Clear underrun flag */
+ __HAL_I2S_CLEAR_UDRFLAG(hi2s);
+
+ /* Set the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_UDR);
+ }
+ }
+
+ /* Check if Slave mode is selected */
+ if (((tmpreg_cfgr & SPI_I2SCFGR_I2SCFG) == I2S_MODE_SLAVE_TX)
+ || ((tmpreg_cfgr & SPI_I2SCFGR_I2SCFG) == I2S_MODE_SLAVE_RX))
+ {
+ /* Wait until Busy flag is reset */
+ if (I2S_WaitFlagStateUntilTimeout(hi2s, I2S_FLAG_BSY, RESET, Timeout) != HAL_OK)
+ {
+ /* Set the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_TIMEOUT);
+ hi2s->State = HAL_I2S_STATE_READY;
+ __HAL_UNLOCK(hi2s);
+ return HAL_ERROR;
+ }
+ }
+
+ hi2s->State = HAL_I2S_STATE_READY;
+ __HAL_UNLOCK(hi2s);
+ return HAL_OK;
+}
+
+/**
+ * @brief Receive an amount of data in blocking mode
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @param pData a 16-bit pointer to data buffer.
+ * @param Size number of data sample to be sent:
+ * @note When a 16-bit data frame or a 16-bit data frame extended is selected during the I2S
+ * configuration phase, the Size parameter means the number of 16-bit data length
+ * in the transaction and when a 24-bit data frame or a 32-bit data frame is selected
+ * the Size parameter means the number of 16-bit data length.
+ * @param Timeout Timeout duration
+ * @note The I2S is kept enabled at the end of transaction to avoid the clock de-synchronization
+ * between Master and Slave(example: audio streaming).
+ * @note In I2S Master Receiver mode, just after enabling the peripheral the clock will be generate
+ * in continuous way and as the I2S is not disabled at the end of the I2S transaction.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_Receive(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t tmpreg_cfgr;
+
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2s);
+
+ if (hi2s->State != HAL_I2S_STATE_READY)
+ {
+ __HAL_UNLOCK(hi2s);
+ return HAL_BUSY;
+ }
+
+ /* Set state and reset error code */
+ hi2s->State = HAL_I2S_STATE_BUSY_RX;
+ hi2s->ErrorCode = HAL_I2S_ERROR_NONE;
+ hi2s->pRxBuffPtr = pData;
+
+ tmpreg_cfgr = hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN);
+
+ if ((tmpreg_cfgr == I2S_DATAFORMAT_24B) || (tmpreg_cfgr == I2S_DATAFORMAT_32B))
+ {
+ hi2s->RxXferSize = (Size << 1U);
+ hi2s->RxXferCount = (Size << 1U);
+ }
+ else
+ {
+ hi2s->RxXferSize = Size;
+ hi2s->RxXferCount = Size;
+ }
+
+ /* Check if the I2S is already enabled */
+ if ((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE)
+ {
+ /* Enable I2S peripheral */
+ __HAL_I2S_ENABLE(hi2s);
+ }
+
+ /* Check if Master Receiver mode is selected */
+ if ((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_MASTER_RX)
+ {
+ /* Clear the Overrun Flag by a read operation on the SPI_DR register followed by a read
+ access to the SPI_SR register. */
+ __HAL_I2S_CLEAR_OVRFLAG(hi2s);
+ }
+
+ /* Receive data */
+ while (hi2s->RxXferCount > 0U)
+ {
+ /* Wait until RXNE flag is set */
+ if (I2S_WaitFlagStateUntilTimeout(hi2s, I2S_FLAG_RXNE, SET, Timeout) != HAL_OK)
+ {
+ /* Set the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_TIMEOUT);
+ hi2s->State = HAL_I2S_STATE_READY;
+ __HAL_UNLOCK(hi2s);
+ return HAL_ERROR;
+ }
+
+ (*hi2s->pRxBuffPtr) = (uint16_t)hi2s->Instance->DR;
+ hi2s->pRxBuffPtr++;
+ hi2s->RxXferCount--;
+
+ /* Check if an overrun occurs */
+ if (__HAL_I2S_GET_FLAG(hi2s, I2S_FLAG_OVR) == SET)
+ {
+ /* Clear overrun flag */
+ __HAL_I2S_CLEAR_OVRFLAG(hi2s);
+
+ /* Set the error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_OVR);
+ }
+ }
+
+ hi2s->State = HAL_I2S_STATE_READY;
+ __HAL_UNLOCK(hi2s);
+ return HAL_OK;
+}
+
+/**
+ * @brief Transmit an amount of data in non-blocking mode with Interrupt
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @param pData a 16-bit pointer to data buffer.
+ * @param Size number of data sample to be sent:
+ * @note When a 16-bit data frame or a 16-bit data frame extended is selected during the I2S
+ * configuration phase, the Size parameter means the number of 16-bit data length
+ * in the transaction and when a 24-bit data frame or a 32-bit data frame is selected
+ * the Size parameter means the number of 16-bit data length.
+ * @note The I2S is kept enabled at the end of transaction to avoid the clock de-synchronization
+ * between Master and Slave(example: audio streaming).
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_Transmit_IT(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size)
+{
+ uint32_t tmpreg_cfgr;
+
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2s);
+
+ if (hi2s->State != HAL_I2S_STATE_READY)
+ {
+ __HAL_UNLOCK(hi2s);
+ return HAL_BUSY;
+ }
+
+ /* Set state and reset error code */
+ hi2s->State = HAL_I2S_STATE_BUSY_TX;
+ hi2s->ErrorCode = HAL_I2S_ERROR_NONE;
+ hi2s->pTxBuffPtr = pData;
+
+ tmpreg_cfgr = hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN);
+
+ if ((tmpreg_cfgr == I2S_DATAFORMAT_24B) || (tmpreg_cfgr == I2S_DATAFORMAT_32B))
+ {
+ hi2s->TxXferSize = (Size << 1U);
+ hi2s->TxXferCount = (Size << 1U);
+ }
+ else
+ {
+ hi2s->TxXferSize = Size;
+ hi2s->TxXferCount = Size;
+ }
+
+ /* Enable TXE and ERR interrupt */
+ __HAL_I2S_ENABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR));
+
+ /* Check if the I2S is already enabled */
+ if ((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE)
+ {
+ /* Enable I2S peripheral */
+ __HAL_I2S_ENABLE(hi2s);
+ }
+
+ __HAL_UNLOCK(hi2s);
+ return HAL_OK;
+}
+
+/**
+ * @brief Receive an amount of data in non-blocking mode with Interrupt
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @param pData a 16-bit pointer to the Receive data buffer.
+ * @param Size number of data sample to be sent:
+ * @note When a 16-bit data frame or a 16-bit data frame extended is selected during the I2S
+ * configuration phase, the Size parameter means the number of 16-bit data length
+ * in the transaction and when a 24-bit data frame or a 32-bit data frame is selected
+ * the Size parameter means the number of 16-bit data length.
+ * @note The I2S is kept enabled at the end of transaction to avoid the clock de-synchronization
+ * between Master and Slave(example: audio streaming).
+ * @note It is recommended to use DMA for the I2S receiver to avoid de-synchronization
+ * between Master and Slave otherwise the I2S interrupt should be optimized.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_Receive_IT(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size)
+{
+ uint32_t tmpreg_cfgr;
+
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2s);
+
+ if (hi2s->State != HAL_I2S_STATE_READY)
+ {
+ __HAL_UNLOCK(hi2s);
+ return HAL_BUSY;
+ }
+
+ /* Set state and reset error code */
+ hi2s->State = HAL_I2S_STATE_BUSY_RX;
+ hi2s->ErrorCode = HAL_I2S_ERROR_NONE;
+ hi2s->pRxBuffPtr = pData;
+
+ tmpreg_cfgr = hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN);
+
+ if ((tmpreg_cfgr == I2S_DATAFORMAT_24B) || (tmpreg_cfgr == I2S_DATAFORMAT_32B))
+ {
+ hi2s->RxXferSize = (Size << 1U);
+ hi2s->RxXferCount = (Size << 1U);
+ }
+ else
+ {
+ hi2s->RxXferSize = Size;
+ hi2s->RxXferCount = Size;
+ }
+
+ /* Enable RXNE and ERR interrupt */
+ __HAL_I2S_ENABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR));
+
+ /* Check if the I2S is already enabled */
+ if ((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE)
+ {
+ /* Enable I2S peripheral */
+ __HAL_I2S_ENABLE(hi2s);
+ }
+
+ __HAL_UNLOCK(hi2s);
+ return HAL_OK;
+}
+
+/**
+ * @brief Transmit an amount of data in non-blocking mode with DMA
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @param pData a 16-bit pointer to the Transmit data buffer.
+ * @param Size number of data sample to be sent:
+ * @note When a 16-bit data frame or a 16-bit data frame extended is selected during the I2S
+ * configuration phase, the Size parameter means the number of 16-bit data length
+ * in the transaction and when a 24-bit data frame or a 32-bit data frame is selected
+ * the Size parameter means the number of 16-bit data length.
+ * @note The I2S is kept enabled at the end of transaction to avoid the clock de-synchronization
+ * between Master and Slave(example: audio streaming).
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_Transmit_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size)
+{
+ uint32_t tmpreg_cfgr;
+
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2s);
+
+ if (hi2s->State != HAL_I2S_STATE_READY)
+ {
+ __HAL_UNLOCK(hi2s);
+ return HAL_BUSY;
+ }
+
+ /* Set state and reset error code */
+ hi2s->State = HAL_I2S_STATE_BUSY_TX;
+ hi2s->ErrorCode = HAL_I2S_ERROR_NONE;
+ hi2s->pTxBuffPtr = pData;
+
+ tmpreg_cfgr = hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN);
+
+ if ((tmpreg_cfgr == I2S_DATAFORMAT_24B) || (tmpreg_cfgr == I2S_DATAFORMAT_32B))
+ {
+ hi2s->TxXferSize = (Size << 1U);
+ hi2s->TxXferCount = (Size << 1U);
+ }
+ else
+ {
+ hi2s->TxXferSize = Size;
+ hi2s->TxXferCount = Size;
+ }
+
+ /* Set the I2S Tx DMA Half transfer complete callback */
+ hi2s->hdmatx->XferHalfCpltCallback = I2S_DMATxHalfCplt;
+
+ /* Set the I2S Tx DMA transfer complete callback */
+ hi2s->hdmatx->XferCpltCallback = I2S_DMATxCplt;
+
+ /* Set the DMA error callback */
+ hi2s->hdmatx->XferErrorCallback = I2S_DMAError;
+
+ /* Enable the Tx DMA Stream/Channel */
+ if (HAL_OK != HAL_DMA_Start_IT(hi2s->hdmatx,
+ (uint32_t)hi2s->pTxBuffPtr,
+ (uint32_t)&hi2s->Instance->DR,
+ hi2s->TxXferSize))
+ {
+ /* Update SPI error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_DMA);
+ hi2s->State = HAL_I2S_STATE_READY;
+
+ __HAL_UNLOCK(hi2s);
+ return HAL_ERROR;
+ }
+
+ /* Check if the I2S is already enabled */
+ if (HAL_IS_BIT_CLR(hi2s->Instance->I2SCFGR, SPI_I2SCFGR_I2SE))
+ {
+ /* Enable I2S peripheral */
+ __HAL_I2S_ENABLE(hi2s);
+ }
+
+ /* Check if the I2S Tx request is already enabled */
+ if (HAL_IS_BIT_CLR(hi2s->Instance->CR2, SPI_CR2_TXDMAEN))
+ {
+ /* Enable Tx DMA Request */
+ SET_BIT(hi2s->Instance->CR2, SPI_CR2_TXDMAEN);
+ }
+
+ __HAL_UNLOCK(hi2s);
+ return HAL_OK;
+}
+
+/**
+ * @brief Receive an amount of data in non-blocking mode with DMA
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @param pData a 16-bit pointer to the Receive data buffer.
+ * @param Size number of data sample to be sent:
+ * @note When a 16-bit data frame or a 16-bit data frame extended is selected during the I2S
+ * configuration phase, the Size parameter means the number of 16-bit data length
+ * in the transaction and when a 24-bit data frame or a 32-bit data frame is selected
+ * the Size parameter means the number of 16-bit data length.
+ * @note The I2S is kept enabled at the end of transaction to avoid the clock de-synchronization
+ * between Master and Slave(example: audio streaming).
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_Receive_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size)
+{
+ uint32_t tmpreg_cfgr;
+
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2s);
+
+ if (hi2s->State != HAL_I2S_STATE_READY)
+ {
+ __HAL_UNLOCK(hi2s);
+ return HAL_BUSY;
+ }
+
+ /* Set state and reset error code */
+ hi2s->State = HAL_I2S_STATE_BUSY_RX;
+ hi2s->ErrorCode = HAL_I2S_ERROR_NONE;
+ hi2s->pRxBuffPtr = pData;
+
+ tmpreg_cfgr = hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN);
+
+ if ((tmpreg_cfgr == I2S_DATAFORMAT_24B) || (tmpreg_cfgr == I2S_DATAFORMAT_32B))
+ {
+ hi2s->RxXferSize = (Size << 1U);
+ hi2s->RxXferCount = (Size << 1U);
+ }
+ else
+ {
+ hi2s->RxXferSize = Size;
+ hi2s->RxXferCount = Size;
+ }
+
+ /* Set the I2S Rx DMA Half transfer complete callback */
+ hi2s->hdmarx->XferHalfCpltCallback = I2S_DMARxHalfCplt;
+
+ /* Set the I2S Rx DMA transfer complete callback */
+ hi2s->hdmarx->XferCpltCallback = I2S_DMARxCplt;
+
+ /* Set the DMA error callback */
+ hi2s->hdmarx->XferErrorCallback = I2S_DMAError;
+
+ /* Check if Master Receiver mode is selected */
+ if ((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_MASTER_RX)
+ {
+ /* Clear the Overrun Flag by a read operation to the SPI_DR register followed by a read
+ access to the SPI_SR register. */
+ __HAL_I2S_CLEAR_OVRFLAG(hi2s);
+ }
+
+ /* Enable the Rx DMA Stream/Channel */
+ if (HAL_OK != HAL_DMA_Start_IT(hi2s->hdmarx, (uint32_t)&hi2s->Instance->DR, (uint32_t)hi2s->pRxBuffPtr,
+ hi2s->RxXferSize))
+ {
+ /* Update SPI error code */
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_DMA);
+ hi2s->State = HAL_I2S_STATE_READY;
+
+ __HAL_UNLOCK(hi2s);
+ return HAL_ERROR;
+ }
+
+ /* Check if the I2S is already enabled */
+ if (HAL_IS_BIT_CLR(hi2s->Instance->I2SCFGR, SPI_I2SCFGR_I2SE))
+ {
+ /* Enable I2S peripheral */
+ __HAL_I2S_ENABLE(hi2s);
+ }
+
+ /* Check if the I2S Rx request is already enabled */
+ if (HAL_IS_BIT_CLR(hi2s->Instance->CR2, SPI_CR2_RXDMAEN))
+ {
+ /* Enable Rx DMA Request */
+ SET_BIT(hi2s->Instance->CR2, SPI_CR2_RXDMAEN);
+ }
+
+ __HAL_UNLOCK(hi2s);
+ return HAL_OK;
+}
+
+/**
+ * @brief Pauses the audio DMA Stream/Channel playing from the Media.
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_DMAPause(I2S_HandleTypeDef *hi2s)
+{
+ /* Process Locked */
+ __HAL_LOCK(hi2s);
+
+ if (hi2s->State == HAL_I2S_STATE_BUSY_TX)
+ {
+ /* Disable the I2S DMA Tx request */
+ CLEAR_BIT(hi2s->Instance->CR2, SPI_CR2_TXDMAEN);
+ }
+ else if (hi2s->State == HAL_I2S_STATE_BUSY_RX)
+ {
+ /* Disable the I2S DMA Rx request */
+ CLEAR_BIT(hi2s->Instance->CR2, SPI_CR2_RXDMAEN);
+ }
+ else
+ {
+ /* nothing to do */
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2s);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Resumes the audio DMA Stream/Channel playing from the Media.
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_DMAResume(I2S_HandleTypeDef *hi2s)
+{
+ /* Process Locked */
+ __HAL_LOCK(hi2s);
+
+ if (hi2s->State == HAL_I2S_STATE_BUSY_TX)
+ {
+ /* Enable the I2S DMA Tx request */
+ SET_BIT(hi2s->Instance->CR2, SPI_CR2_TXDMAEN);
+ }
+ else if (hi2s->State == HAL_I2S_STATE_BUSY_RX)
+ {
+ /* Enable the I2S DMA Rx request */
+ SET_BIT(hi2s->Instance->CR2, SPI_CR2_RXDMAEN);
+ }
+ else
+ {
+ /* nothing to do */
+ }
+
+ /* If the I2S peripheral is still not enabled, enable it */
+ if (HAL_IS_BIT_CLR(hi2s->Instance->I2SCFGR, SPI_I2SCFGR_I2SE))
+ {
+ /* Enable I2S peripheral */
+ __HAL_I2S_ENABLE(hi2s);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2s);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Stops the audio DMA Stream/Channel playing from the Media.
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2S_DMAStop(I2S_HandleTypeDef *hi2s)
+{
+ HAL_StatusTypeDef errorcode = HAL_OK;
+ /* The Lock is not implemented on this API to allow the user application
+ to call the HAL SPI API under callbacks HAL_I2S_TxCpltCallback() or HAL_I2S_RxCpltCallback()
+ when calling HAL_DMA_Abort() API the DMA TX or RX Transfer complete interrupt is generated
+ and the correspond call back is executed HAL_I2S_TxCpltCallback() or HAL_I2S_RxCpltCallback()
+ */
+
+ /* Disable the I2S Tx/Rx DMA requests */
+ CLEAR_BIT(hi2s->Instance->CR2, SPI_CR2_TXDMAEN);
+ CLEAR_BIT(hi2s->Instance->CR2, SPI_CR2_RXDMAEN);
+
+ /* Abort the I2S DMA tx Stream/Channel */
+ if (hi2s->hdmatx != NULL)
+ {
+ /* Disable the I2S DMA tx Stream/Channel */
+ if (HAL_OK != HAL_DMA_Abort(hi2s->hdmatx))
+ {
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_DMA);
+ errorcode = HAL_ERROR;
+ }
+ }
+
+ /* Abort the I2S DMA rx Stream/Channel */
+ if (hi2s->hdmarx != NULL)
+ {
+ /* Disable the I2S DMA rx Stream/Channel */
+ if (HAL_OK != HAL_DMA_Abort(hi2s->hdmarx))
+ {
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_DMA);
+ errorcode = HAL_ERROR;
+ }
+ }
+
+ /* Disable I2S peripheral */
+ __HAL_I2S_DISABLE(hi2s);
+
+ hi2s->State = HAL_I2S_STATE_READY;
+
+ return errorcode;
+}
+
+/**
+ * @brief This function handles I2S interrupt request.
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval None
+ */
+void HAL_I2S_IRQHandler(I2S_HandleTypeDef *hi2s)
+{
+ uint32_t itsource = hi2s->Instance->CR2;
+ uint32_t itflag = hi2s->Instance->SR;
+
+ /* I2S in mode Receiver ------------------------------------------------*/
+ if ((I2S_CHECK_FLAG(itflag, I2S_FLAG_OVR) == RESET) &&
+ (I2S_CHECK_FLAG(itflag, I2S_FLAG_RXNE) != RESET) && (I2S_CHECK_IT_SOURCE(itsource, I2S_IT_RXNE) != RESET))
+ {
+ I2S_Receive_IT(hi2s);
+ return;
+ }
+
+ /* I2S in mode Tramitter -----------------------------------------------*/
+ if ((I2S_CHECK_FLAG(itflag, I2S_FLAG_TXE) != RESET) && (I2S_CHECK_IT_SOURCE(itsource, I2S_IT_TXE) != RESET))
+ {
+ I2S_Transmit_IT(hi2s);
+ return;
+ }
+
+ /* I2S interrupt error -------------------------------------------------*/
+ if (I2S_CHECK_IT_SOURCE(itsource, I2S_IT_ERR) != RESET)
+ {
+ /* I2S Overrun error interrupt occurred ---------------------------------*/
+ if (I2S_CHECK_FLAG(itflag, I2S_FLAG_OVR) != RESET)
+ {
+ /* Disable RXNE and ERR interrupt */
+ __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR));
+
+ /* Set the error code and execute error callback*/
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_OVR);
+ }
+
+ /* I2S Underrun error interrupt occurred --------------------------------*/
+ if (I2S_CHECK_FLAG(itflag, I2S_FLAG_UDR) != RESET)
+ {
+ /* Disable TXE and ERR interrupt */
+ __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR));
+
+ /* Set the error code and execute error callback*/
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_UDR);
+ }
+
+ /* Set the I2S State ready */
+ hi2s->State = HAL_I2S_STATE_READY;
+
+ /* Call user error callback */
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+ hi2s->ErrorCallback(hi2s);
+#else
+ HAL_I2S_ErrorCallback(hi2s);
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+ }
+}
+
+/**
+ * @brief Tx Transfer Half completed callbacks
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval None
+ */
+__weak void HAL_I2S_TxHalfCpltCallback(I2S_HandleTypeDef *hi2s)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2s);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2S_TxHalfCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Tx Transfer completed callbacks
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval None
+ */
+__weak void HAL_I2S_TxCpltCallback(I2S_HandleTypeDef *hi2s)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2s);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2S_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Rx Transfer half completed callbacks
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval None
+ */
+__weak void HAL_I2S_RxHalfCpltCallback(I2S_HandleTypeDef *hi2s)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2s);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2S_RxHalfCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Rx Transfer completed callbacks
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval None
+ */
+__weak void HAL_I2S_RxCpltCallback(I2S_HandleTypeDef *hi2s)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2s);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2S_RxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief I2S error callbacks
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval None
+ */
+__weak void HAL_I2S_ErrorCallback(I2S_HandleTypeDef *hi2s)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2s);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2S_ErrorCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2S_Exported_Functions_Group3 Peripheral State and Errors 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 I2S state
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval HAL state
+ */
+HAL_I2S_StateTypeDef HAL_I2S_GetState(I2S_HandleTypeDef *hi2s)
+{
+ return hi2s->State;
+}
+
+/**
+ * @brief Return the I2S error code
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval I2S Error Code
+ */
+uint32_t HAL_I2S_GetError(I2S_HandleTypeDef *hi2s)
+{
+ return hi2s->ErrorCode;
+}
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup I2S_Private_Functions I2S Private Functions
+ * @{
+ */
+/**
+ * @brief DMA I2S 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 I2S_DMATxCplt(DMA_HandleTypeDef *hdma)
+{
+ I2S_HandleTypeDef *hi2s = (I2S_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* if DMA is configured in DMA_NORMAL Mode */
+ if (hdma->Init.Mode == DMA_NORMAL)
+ {
+ /* Disable Tx DMA Request */
+ CLEAR_BIT(hi2s->Instance->CR2, SPI_CR2_TXDMAEN);
+
+ hi2s->TxXferCount = 0U;
+ hi2s->State = HAL_I2S_STATE_READY;
+ }
+ /* Call user Tx complete callback */
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+ hi2s->TxCpltCallback(hi2s);
+#else
+ HAL_I2S_TxCpltCallback(hi2s);
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+}
+
+/**
+ * @brief DMA I2S 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 I2S_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ I2S_HandleTypeDef *hi2s = (I2S_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* Call user Tx half complete callback */
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+ hi2s->TxHalfCpltCallback(hi2s);
+#else
+ HAL_I2S_TxHalfCpltCallback(hi2s);
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+}
+
+/**
+ * @brief DMA I2S 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 I2S_DMARxCplt(DMA_HandleTypeDef *hdma)
+{
+ I2S_HandleTypeDef *hi2s = (I2S_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* if DMA is configured in DMA_NORMAL Mode */
+ if (hdma->Init.Mode == DMA_NORMAL)
+ {
+ /* Disable Rx DMA Request */
+ CLEAR_BIT(hi2s->Instance->CR2, SPI_CR2_RXDMAEN);
+ hi2s->RxXferCount = 0U;
+ hi2s->State = HAL_I2S_STATE_READY;
+ }
+ /* Call user Rx complete callback */
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+ hi2s->RxCpltCallback(hi2s);
+#else
+ HAL_I2S_RxCpltCallback(hi2s);
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+}
+
+/**
+ * @brief DMA I2S 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 I2S_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ I2S_HandleTypeDef *hi2s = (I2S_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* Call user Rx half complete callback */
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+ hi2s->RxHalfCpltCallback(hi2s);
+#else
+ HAL_I2S_RxHalfCpltCallback(hi2s);
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+}
+
+/**
+ * @brief DMA I2S 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 I2S_DMAError(DMA_HandleTypeDef *hdma)
+{
+ I2S_HandleTypeDef *hi2s = (I2S_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* Disable Rx and Tx DMA Request */
+ CLEAR_BIT(hi2s->Instance->CR2, (SPI_CR2_RXDMAEN | SPI_CR2_TXDMAEN));
+ hi2s->TxXferCount = 0U;
+ hi2s->RxXferCount = 0U;
+
+ hi2s->State = HAL_I2S_STATE_READY;
+
+ /* Set the error code and execute error callback*/
+ SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_DMA);
+ /* Call user error callback */
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+ hi2s->ErrorCallback(hi2s);
+#else
+ HAL_I2S_ErrorCallback(hi2s);
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+}
+
+/**
+ * @brief Transmit an amount of data in non-blocking mode with Interrupt
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval None
+ */
+static void I2S_Transmit_IT(I2S_HandleTypeDef *hi2s)
+{
+ /* Transmit data */
+ hi2s->Instance->DR = (*hi2s->pTxBuffPtr);
+ hi2s->pTxBuffPtr++;
+ hi2s->TxXferCount--;
+
+ if (hi2s->TxXferCount == 0U)
+ {
+ /* Disable TXE and ERR interrupt */
+ __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR));
+
+ hi2s->State = HAL_I2S_STATE_READY;
+ /* Call user Tx complete callback */
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+ hi2s->TxCpltCallback(hi2s);
+#else
+ HAL_I2S_TxCpltCallback(hi2s);
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+ }
+}
+
+/**
+ * @brief Receive an amount of data in non-blocking mode with Interrupt
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @retval None
+ */
+static void I2S_Receive_IT(I2S_HandleTypeDef *hi2s)
+{
+ /* Receive data */
+ (*hi2s->pRxBuffPtr) = (uint16_t)hi2s->Instance->DR;
+ hi2s->pRxBuffPtr++;
+ hi2s->RxXferCount--;
+
+ if (hi2s->RxXferCount == 0U)
+ {
+ /* Disable RXNE and ERR interrupt */
+ __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR));
+
+ hi2s->State = HAL_I2S_STATE_READY;
+ /* Call user Rx complete callback */
+#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
+ hi2s->RxCpltCallback(hi2s);
+#else
+ HAL_I2S_RxCpltCallback(hi2s);
+#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
+ }
+}
+
+/**
+ * @brief This function handles I2S Communication Timeout.
+ * @param hi2s pointer to a I2S_HandleTypeDef structure that contains
+ * the configuration information for I2S module
+ * @param Flag Flag checked
+ * @param State Value of the flag expected
+ * @param Timeout Duration of the timeout
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2S_WaitFlagStateUntilTimeout(I2S_HandleTypeDef *hi2s, uint32_t Flag, FlagStatus State,
+ uint32_t Timeout)
+{
+ uint32_t tickstart;
+
+ /* Get tick */
+ tickstart = HAL_GetTick();
+
+ /* Wait until flag is set to status*/
+ while (((__HAL_I2S_GET_FLAG(hi2s, Flag)) ? SET : RESET) != State)
+ {
+ if (Timeout != HAL_MAX_DELAY)
+ {
+ if (((HAL_GetTick() - tickstart) >= Timeout) || (Timeout == 0U))
+ {
+ /* Set the I2S State ready */
+ hi2s->State = HAL_I2S_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2s);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+#endif /* SPI_I2S_SUPPORT */
+
+#endif /* HAL_I2S_MODULE_ENABLED */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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