diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_i2s.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_i2s.c | 1535 |
1 files changed, 0 insertions, 1535 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_i2s.c b/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_i2s.c deleted file mode 100644 index f0fd09a07e..0000000000 --- a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_i2s.c +++ /dev/null @@ -1,1535 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f7xx_hal_i2s.c - * @author MCD Application Team - * @version V1.0.1 - * @date 25-June-2015 - * @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 follows: - - (#) 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 channel. - (+++) Enable the DMAx interface clock. - (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters. - (+++) Configure the DMA Tx/Rx 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 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: - (+@) I2S clock is configured based on SYSCLK or - (+@) External clock source is configured after setting correctly - the define constant EXTERNAL_CLOCK_VALUE in the stm32f3xx_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 - - @endverbatim - ****************************************************************************** - * @attention - * - * <h2><center>© COPYRIGHT(c) 2015 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 "stm32f7xx_hal.h" - -/** @addtogroup STM32F7xx_HAL_Driver - * @{ - */ - -/** @defgroup I2S I2S - * @brief I2S HAL module driver - * @{ - */ - -#ifdef HAL_I2S_MODULE_ENABLED - -/* 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 uint32_t I2S_GetClockFreq(I2S_HandleTypeDef *hi2s); -static HAL_StatusTypeDef I2S_WaitFlagStateUntilTimeout(I2S_HandleTypeDef *hi2s, uint32_t Flag, uint32_t 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 - (++) Full duplex mode - - (+) 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) -{ - uint16_t tmpreg = 0, i2sdiv = 2, i2sodd = 0, packetlength = 1; - uint32_t tmp = 0, i2sclk = 0; - - /* Check the I2S handle allocation */ - if(hi2s == NULL) - { - return HAL_ERROR; - } - - /* Check the 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)); - assert_param(IS_I2S_CLOCKSOURCE(hi2s->Init.ClockSource)); - - if(hi2s->State == HAL_I2S_STATE_RESET) - { - /* Allocate lock resource and initialize it */ - hi2s->Lock = HAL_UNLOCKED; - /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */ - HAL_I2S_MspInit(hi2s); - } - - hi2s->State = HAL_I2S_STATE_BUSY; - - /*----------------------- SPIx I2SCFGR & I2SPR Configuration -----------------*/ - /* Clear I2SMOD, I2SE, I2SCFG, PCMSYNC, I2SSTD, CKPOL, DATLEN and CHLEN bits */ - 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 = 0x0002; - - /* Get the I2SCFGR register value */ - tmpreg = hi2s->Instance->I2SCFGR; - - /* If the default value has to be written, reinitialize i2sdiv and i2sodd*/ - if(hi2s->Init.AudioFreq == I2S_AUDIOFREQ_DEFAULT) - { - i2sodd = (uint16_t)0; - i2sdiv = (uint16_t)2; - } - /* If the requested audio frequency is not the default, compute the prescaler */ - else - { - /* Check the frame length (For the Prescaler computing) *******************/ - if(hi2s->Init.DataFormat == I2S_DATAFORMAT_16B) - { - /* Packet length is 16 bits */ - packetlength = 1; - } - else - { - /* Packet length is 32 bits */ - packetlength = 2; - } - - /* Get I2S source Clock frequency ****************************************/ - - /* If an external I2S clock has to be used, the specific define should be set - in the project configuration or in the stm32f3xx_conf.h file */ - if(hi2s->Init.ClockSource == I2S_CLOCK_EXTERNAL) - { - /* Set the I2S clock to the external clock value */ - i2sclk = EXTERNAL_CLOCK_VALUE; - } - else - { - /* Get the I2S source clock value */ - i2sclk = I2S_GetClockFreq(hi2s); - } - - /* 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 */ - tmp = (uint16_t)(((((i2sclk / 256) * 10) / hi2s->Init.AudioFreq)) + 5); - } - else - { - /* MCLK output is disabled */ - tmp = (uint16_t)(((((i2sclk / (32 * packetlength)) *10 ) / hi2s->Init.AudioFreq)) + 5); - } - - /* Remove the flatting point */ - tmp = tmp / 10; - - /* Check the parity of the divider */ - i2sodd = (uint16_t)(tmp & (uint16_t)0x0001); - - /* Compute the i2sdiv prescaler */ - i2sdiv = (uint16_t)((tmp - i2sodd) / 2); - - /* Get the Mask for the Odd bit (SPI_I2SPR[8]) register */ - i2sodd = (uint16_t) (i2sodd << 8); - } - - /* Test if the divider is 1 or 0 or greater than 0xFF */ - if((i2sdiv < 2) || (i2sdiv > 0xFF)) - { - /* Set the default values */ - i2sdiv = 2; - i2sodd = 0; - } - - /* Write to SPIx I2SPR register the computed value */ - hi2s->Instance->I2SPR = (uint16_t)((uint16_t)i2sdiv | (uint16_t)(i2sodd | (uint16_t)hi2s->Init.MCLKOutput)); - - /* Configure the I2S with the I2S_InitStruct values */ - tmpreg |= (uint16_t)((uint16_t)SPI_I2SCFGR_I2SMOD | (uint16_t)(hi2s->Init.Mode | \ - (uint16_t)(hi2s->Init.Standard | (uint16_t)(hi2s->Init.DataFormat | \ - (uint16_t)hi2s->Init.CPOL)))); - - /* Write to SPIx I2SCFGR */ - hi2s->Instance->I2SCFGR = tmpreg; - - 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; - - /* DeInit the low level hardware: GPIO, CLOCK, NVIC... */ - HAL_I2S_MspDeInit(hi2s); - - 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) -{ - /* 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) -{ - /* NOTE : This function Should not be modified, when the callback is needed, - the HAL_I2S_MspDeInit could be implemented in the user file - */ -} - -/** - * @} - */ - -/** @defgroup I2S_Exported_Functions_Group2 Input and Output 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) -{ - if((pData == NULL ) || (Size == 0)) - { - return HAL_ERROR; - } - - if(hi2s->State == HAL_I2S_STATE_READY) - { - if(((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_24B)||\ - ((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_32B)) - { - hi2s->TxXferSize = (Size << 1); - hi2s->TxXferCount = (Size << 1); - } - else - { - hi2s->TxXferSize = Size; - hi2s->TxXferCount = Size; - } - - /* Process Locked */ - __HAL_LOCK(hi2s); - - hi2s->ErrorCode = HAL_I2S_ERROR_NONE; - hi2s->State = HAL_I2S_STATE_BUSY_TX; - - /* Check if the I2S is already enabled */ - if((hi2s->Instance->I2SCFGR &SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE) - { - /* Enable I2S peripheral */ - __HAL_I2S_ENABLE(hi2s); - } - - while(hi2s->TxXferCount > 0) - { - hi2s->Instance->DR = (*pData++); - hi2s->TxXferCount--; - /* Wait until TXE flag is set */ - if (I2S_WaitFlagStateUntilTimeout(hi2s, I2S_FLAG_TXE, SET, Timeout) != HAL_OK) - { - /* Set the error code and execute error callback*/ - hi2s->ErrorCode |= HAL_I2S_ERROR_TIMEOUT; - HAL_I2S_ErrorCallback(hi2s); - return HAL_TIMEOUT; - } - - /* Check if an underrun occurs */ - if(__HAL_I2S_GET_FLAG(hi2s, I2S_FLAG_UDR) == SET) - { - /* Set the I2S State ready */ - hi2s->State = HAL_I2S_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - /* Set the error code and execute error callback*/ - hi2s->ErrorCode |= HAL_I2S_ERROR_UDR; - HAL_I2S_ErrorCallback(hi2s); - - return HAL_ERROR; - } - } - - /* Check if Slave mode is selected */ - if(((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_SLAVE_TX) || ((hi2s->Instance->I2SCFGR & 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 and execute error callback*/ - hi2s->ErrorCode |= HAL_I2S_ERROR_TIMEOUT; - HAL_I2S_ErrorCallback(hi2s); - return HAL_TIMEOUT; - } - } - - hi2s->State = HAL_I2S_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @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) -{ - if((pData == NULL ) || (Size == 0)) - { - return HAL_ERROR; - } - - if(hi2s->State == HAL_I2S_STATE_READY) - { - if(((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_24B)||\ - ((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_32B)) - { - hi2s->RxXferSize = (Size << 1); - hi2s->RxXferCount = (Size << 1); - } - else - { - hi2s->RxXferSize = Size; - hi2s->RxXferCount = Size; - } - /* Process Locked */ - __HAL_LOCK(hi2s); - - hi2s->ErrorCode = HAL_I2S_ERROR_NONE; - hi2s->State = HAL_I2S_STATE_BUSY_RX; - - /* 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 > 0) - { - /* Wait until RXNE flag is set */ - if (I2S_WaitFlagStateUntilTimeout(hi2s, I2S_FLAG_RXNE, SET, Timeout) != HAL_OK) - { - /* Set the error code and execute error callback*/ - hi2s->ErrorCode |= HAL_I2S_ERROR_TIMEOUT; - HAL_I2S_ErrorCallback(hi2s); - return HAL_TIMEOUT; - } - - /* Check if an overrun occurs */ - if(__HAL_I2S_GET_FLAG(hi2s, I2S_FLAG_OVR) == SET) - { - /* Set the I2S State ready */ - hi2s->State = HAL_I2S_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - /* Set the error code and execute error callback*/ - hi2s->ErrorCode |= HAL_I2S_ERROR_OVR; - HAL_I2S_ErrorCallback(hi2s); - - return HAL_ERROR; - } - - (*pData++) = hi2s->Instance->DR; - hi2s->RxXferCount--; - } - - hi2s->State = HAL_I2S_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @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) -{ - if(hi2s->State == HAL_I2S_STATE_READY) - { - if((pData == NULL) || (Size == 0)) - { - return HAL_ERROR; - } - - hi2s->pTxBuffPtr = pData; - if(((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_24B)||\ - ((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_32B)) - { - hi2s->TxXferSize = (Size << 1); - hi2s->TxXferCount = (Size << 1); - } - else - { - hi2s->TxXferSize = Size; - hi2s->TxXferCount = Size; - } - - /* Process Locked */ - __HAL_LOCK(hi2s); - - hi2s->ErrorCode = HAL_I2S_ERROR_NONE; - hi2s->State = HAL_I2S_STATE_BUSY_TX; - - /* 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); - } - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @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-synchronisation - * 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) -{ - if(hi2s->State == HAL_I2S_STATE_READY) - { - if((pData == NULL) || (Size == 0)) - { - return HAL_ERROR; - } - - hi2s->pRxBuffPtr = pData; - if(((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_24B)||\ - ((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_32B)) - { - hi2s->RxXferSize = (Size << 1); - hi2s->RxXferCount = (Size << 1); - } - else - { - hi2s->RxXferSize = Size; - hi2s->RxXferCount = Size; - } - /* Process Locked */ - __HAL_LOCK(hi2s); - - hi2s->ErrorCode = HAL_I2S_ERROR_NONE; - hi2s->State = HAL_I2S_STATE_BUSY_RX; - - /* Enable TXE 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); - } - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @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 *tmp; - - if((pData == NULL) || (Size == 0)) - { - return HAL_ERROR; - } - - if(hi2s->State == HAL_I2S_STATE_READY) - { - hi2s->pTxBuffPtr = pData; - if(((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_24B)||\ - ((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_32B)) - { - hi2s->TxXferSize = (Size << 1); - hi2s->TxXferCount = (Size << 1); - } - else - { - hi2s->TxXferSize = Size; - hi2s->TxXferCount = Size; - } - - /* Process Locked */ - __HAL_LOCK(hi2s); - - hi2s->ErrorCode = HAL_I2S_ERROR_NONE; - hi2s->State = HAL_I2S_STATE_BUSY_TX; - - /* Set the I2S Tx DMA Half transfer complete callback */ - hi2s->hdmatx->XferHalfCpltCallback = I2S_DMATxHalfCplt; - - /* Set the I2S TxDMA transfer complete callback */ - hi2s->hdmatx->XferCpltCallback = I2S_DMATxCplt; - - /* Set the DMA error callback */ - hi2s->hdmatx->XferErrorCallback = I2S_DMAError; - - /* Enable the Tx DMA Channel */ - tmp = (uint32_t*)&pData; - HAL_DMA_Start_IT(hi2s->hdmatx, *(uint32_t*)tmp, (uint32_t)&hi2s->Instance->DR, hi2s->TxXferSize); - - /* Check if the I2S is already enabled */ - if((hi2s->Instance->I2SCFGR &SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE) - { - /* Enable I2S peripheral */ - __HAL_I2S_ENABLE(hi2s); - } - - /* Enable Tx DMA Request */ - hi2s->Instance->CR2 |= SPI_CR2_TXDMAEN; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @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 *tmp; - - if((pData == NULL) || (Size == 0)) - { - return HAL_ERROR; - } - - if(hi2s->State == HAL_I2S_STATE_READY) - { - hi2s->pRxBuffPtr = pData; - if(((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_24B)||\ - ((hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) == I2S_DATAFORMAT_32B)) - { - hi2s->RxXferSize = (Size << 1); - hi2s->RxXferCount = (Size << 1); - } - else - { - hi2s->RxXferSize = Size; - hi2s->RxXferCount = Size; - } - /* Process Locked */ - __HAL_LOCK(hi2s); - - hi2s->ErrorCode = HAL_I2S_ERROR_NONE; - hi2s->State = HAL_I2S_STATE_BUSY_RX; - - /* 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 Channel */ - tmp = (uint32_t*)&pData; - HAL_DMA_Start_IT(hi2s->hdmarx, (uint32_t)&hi2s->Instance->DR, *(uint32_t*)tmp, hi2s->RxXferSize); - - /* Check if the I2S is already enabled */ - if((hi2s->Instance->I2SCFGR &SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE) - { - /* Enable I2S peripheral */ - __HAL_I2S_ENABLE(hi2s); - } - - /* Enable Rx DMA Request */ - hi2s->Instance->CR2 |= SPI_CR2_RXDMAEN; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Pauses the audio stream 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 */ - hi2s->Instance->CR2 &= (uint32_t)(~SPI_CR2_TXDMAEN); - } - else if(hi2s->State == HAL_I2S_STATE_BUSY_RX) - { - /* Disable the I2S DMA Rx request */ - hi2s->Instance->CR2 &= (uint32_t)(~SPI_CR2_RXDMAEN); - } - else if(hi2s->State == HAL_I2S_STATE_BUSY_TX_RX) - { - if((hi2s->Init.Mode == I2S_MODE_SLAVE_TX)||(hi2s->Init.Mode == I2S_MODE_MASTER_TX)) - { - /* Disable the I2S DMA Tx request */ - hi2s->Instance->CR2 &= (uint32_t)(~SPI_CR2_TXDMAEN); - } - else - { - /* Disable the I2S DMA Rx request */ - hi2s->Instance->CR2 &= (uint32_t)(~SPI_CR2_RXDMAEN); - } - } - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - return HAL_OK; -} - -/** - * @brief Resumes the audio stream 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); - } - - /* 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 stream 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) -{ - /* Process Locked */ - __HAL_LOCK(hi2s); - - /* 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 Channel tx */ - if(hi2s->hdmatx != NULL) - { - /* Disable the I2S DMA channel */ - __HAL_DMA_DISABLE(hi2s->hdmatx); - HAL_DMA_Abort(hi2s->hdmatx); - } - /* Abort the I2S DMA Channel rx */ - if(hi2s->hdmarx != NULL) - { - /* Disable the I2S DMA channel */ - __HAL_DMA_DISABLE(hi2s->hdmarx); - HAL_DMA_Abort(hi2s->hdmarx); - } - - /* Disable I2S peripheral */ - __HAL_I2S_DISABLE(hi2s); - - hi2s->State = HAL_I2S_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - return HAL_OK; -} - -/** - * @brief This function handles I2S interrupt request. - * @param hi2s: pointer to a I2S_HandleTypeDef structure that contains - * the configuration information for I2S module - * @retval HAL status - */ -void HAL_I2S_IRQHandler(I2S_HandleTypeDef *hi2s) -{ - __IO uint32_t i2ssr = hi2s->Instance->SR; - - if(hi2s->State == HAL_I2S_STATE_BUSY_RX) - { - /* I2S in mode Receiver ----------------------------------------------------*/ - if(((i2ssr & I2S_FLAG_RXNE) == I2S_FLAG_RXNE) && (__HAL_I2S_GET_IT_SOURCE(hi2s, I2S_IT_RXNE) != RESET)) - { - I2S_Receive_IT(hi2s); - } - - /* I2S Overrun error interrupt occurred -------------------------------------*/ - if(((i2ssr & I2S_FLAG_OVR) == I2S_FLAG_OVR) && (__HAL_I2S_GET_IT_SOURCE(hi2s, I2S_IT_ERR) != RESET)) - { - /* Disable RXNE and ERR interrupt */ - __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR)); - - /* Set the I2S State ready */ - hi2s->State = HAL_I2S_STATE_READY; - - /* Set the error code and execute error callback*/ - hi2s->ErrorCode |= HAL_I2S_ERROR_OVR; - HAL_I2S_ErrorCallback(hi2s); - } - } - else if(hi2s->State == HAL_I2S_STATE_BUSY_TX) - { - /* I2S in mode Transmitter ---------------------------------------------------*/ - if(((i2ssr & I2S_FLAG_TXE) == I2S_FLAG_TXE) && (__HAL_I2S_GET_IT_SOURCE(hi2s, I2S_IT_TXE) != RESET)) - { - I2S_Transmit_IT(hi2s); - } - - /* I2S Underrun error interrupt occurred ------------------------------------*/ - if(((i2ssr & I2S_FLAG_UDR) == I2S_FLAG_UDR) && (__HAL_I2S_GET_IT_SOURCE(hi2s, I2S_IT_ERR) != RESET)) - { - /* Disable TXE and ERR interrupt */ - __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); - - /* Set the I2S State ready */ - hi2s->State = HAL_I2S_STATE_READY; - - /* Set the error code and execute error callback*/ - hi2s->ErrorCode |= HAL_I2S_ERROR_UDR; - HAL_I2S_ErrorCallback(hi2s); - } - } -} - -/** - * @} - */ - -/** - * @} - */ - -/** @addtogroup I2S_Private_Functions I2S Private Functions - * @{ - */ -/** - * @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, - uint32_t State, uint32_t Timeout) -{ - uint32_t tickstart = 0; - - /* Get tick */ - tickstart = HAL_GetTick(); - - /* Wait until flag is set */ - if(State == RESET) - { - while(__HAL_I2S_GET_FLAG(hi2s, Flag) == RESET) - { - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Set the I2S State ready */ - hi2s->State= HAL_I2S_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - return HAL_TIMEOUT; - } - } - } - } - else - { - while(__HAL_I2S_GET_FLAG(hi2s, Flag) != RESET) - { - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Set the I2S State ready */ - hi2s->State= HAL_I2S_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2s); - - return HAL_TIMEOUT; - } - } - } - } - return HAL_OK; -} -/** - * @} - */ - -/** @addtogroup I2S_Exported_Functions I2S Exported Functions - * @{ - */ - -/** @addtogroup I2S_Exported_Functions_Group2 Input and Output operation functions - * @{ - */ -/** - * @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) -{ - /* 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) -{ - /* 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) -{ - /* NOTE : This function Should not be modified, when the callback is needed, - the HAL_I2S_RxCpltCallback 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) -{ - /* 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) -{ - /* 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; -} -/** - * @} - */ - -/** - * @} - */ - - /** - * @brief Get I2S Input Clock based on I2S source clock selection - * @param hi2s: pointer to a I2S_HandleTypeDef structure that contains - * the configuration information for I2S module. - * @retval I2S Clock Input - */ -static uint32_t I2S_GetClockFreq(I2S_HandleTypeDef *hi2s) -{ - uint32_t tmpreg = 0; - /* This variable used to store the VCO Input (value in Hz) */ - uint32_t vcoinput = 0; - /* This variable used to store the I2S_CK_x (value in Hz) */ - uint32_t i2sclocksource = 0; - - /* Configure I2S Clock based on I2S source clock selection */ - - /* I2S_CLK_x : I2S Block Clock configuration for different clock sources selected */ - switch(hi2s->Init.ClockSource) - { - case I2S_CLOCK_SYSCLK : - { - /* Configure the PLLI2S division factor */ - /* PLLI2S_VCO Input = PLL_SOURCE/PLLI2SM */ - if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI) - { - /* In Case the PLL Source is HSI (Internal Clock) */ - vcoinput = (HSI_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM)); - } - else - { - /* In Case the PLL Source is HSE (External Clock) */ - vcoinput = ((HSE_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM))); - } - - /* PLLI2S_VCO Output = PLLI2S_VCO Input * PLLI2SN */ - /* I2S_CLK(first level) = PLLI2S_VCO Output/PLLI2SR */ - tmpreg = (RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SR) >> 28; - i2sclocksource = (vcoinput * ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SN) >> 6))/(tmpreg); - - break; - } - case I2S_CLOCK_EXTERNAL : - { - i2sclocksource = EXTERNAL_CLOCK_VALUE; - break; - } - default : - { - break; - } - } - - /* the return result is the value of I2S clock */ - return i2sclocksource; -} - -/** @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; - - if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0) - { - hi2s->TxXferCount = 0; - - /* Disable Tx DMA Request */ - hi2s->Instance->CR2 &= (uint32_t)(~SPI_CR2_TXDMAEN); - - if(hi2s->State == HAL_I2S_STATE_BUSY_TX_RX) - { - if(hi2s->RxXferCount == 0) - { - hi2s->State = HAL_I2S_STATE_READY; - } - } - else - { - hi2s->State = HAL_I2S_STATE_READY; - } - } - HAL_I2S_TxCpltCallback(hi2s); -} - -/** - * @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; - - HAL_I2S_TxHalfCpltCallback(hi2s); -} - -/** - * @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; - - if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0) - { - /* Disable Rx DMA Request */ - hi2s->Instance->CR2 &= (uint32_t)(~SPI_CR2_RXDMAEN); - - hi2s->RxXferCount = 0; - if(hi2s->State == HAL_I2S_STATE_BUSY_TX_RX) - { - if(hi2s->TxXferCount == 0) - { - hi2s->State = HAL_I2S_STATE_READY; - } - } - else - { - hi2s->State = HAL_I2S_STATE_READY; - } - } - HAL_I2S_RxCpltCallback(hi2s); -} - -/** - * @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; - - HAL_I2S_RxHalfCpltCallback(hi2s); -} - -/** - * @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; - - /* Disable Rx and Tx DMA Request */ - hi2s->Instance->CR2 &= (uint32_t)(~(SPI_CR2_RXDMAEN | SPI_CR2_TXDMAEN)); - hi2s->TxXferCount = 0; - hi2s->RxXferCount = 0; - - hi2s->State= HAL_I2S_STATE_READY; - - /* Set the error code and execute error callback*/ - hi2s->ErrorCode |= HAL_I2S_ERROR_DMA; - HAL_I2S_ErrorCallback(hi2s); -} - -/** - * @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->TxXferCount--; - - if(hi2s->TxXferCount == 0) - { - /* Disable TXE and ERR interrupt */ - __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); - - hi2s->State = HAL_I2S_STATE_READY; - HAL_I2S_TxCpltCallback(hi2s); - } -} - -/** - * @brief Receive an amount of data in non-blocking mode with Interrupt - * @param hi2s: I2S handle - * @retval None - */ -static void I2S_Receive_IT(I2S_HandleTypeDef *hi2s) -{ - /* Receive data */ - (*hi2s->pRxBuffPtr++) = hi2s->Instance->DR; - hi2s->RxXferCount--; - - if(hi2s->RxXferCount == 0) - { - /* Disable RXNE and ERR interrupt */ - __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR)); - - hi2s->State = HAL_I2S_STATE_READY; - HAL_I2S_RxCpltCallback(hi2s); - } -} -/** - * @} - */ - -#endif /* HAL_I2S_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |