| /** | |
| ****************************************************************************** | |
| * @file stm32f7xx_hal_sai_ex.c | |
| * @author MCD Application Team | |
| * @version V1.0.0 | |
| * @date 12-May-2015 | |
| * @brief SAI Extension HAL module driver. | |
| * This file provides firmware functions to manage the following | |
| * functionalities of SAI extension peripheral: | |
| * + Extension features functions | |
| * | |
| @verbatim | |
| ============================================================================== | |
| ##### SAI peripheral extension features ##### | |
| ============================================================================== | |
| ##### How to use this driver ##### | |
| ============================================================================== | |
| [..] This driver provides functions to manage several sources to clock SAI | |
| @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 SAIEx SAIEx | |
| * @brief SAI Extension HAL module driver | |
| * @{ | |
| */ | |
| #ifdef HAL_SAI_MODULE_ENABLED | |
| /* Private typedef -----------------------------------------------------------*/ | |
| /* Private define ------------------------------------------------------------*/ | |
| /* SAI registers Masks */ | |
| /* Private macro -------------------------------------------------------------*/ | |
| /* Private variables ---------------------------------------------------------*/ | |
| /* Private function prototypes -----------------------------------------------*/ | |
| /* Private functions ---------------------------------------------------------*/ | |
| /** @defgroup SAI_Private_Functions SAI Private Functions | |
| * @{ | |
| */ | |
| /** | |
| * @} | |
| */ | |
| /* Exported functions --------------------------------------------------------*/ | |
| /** @defgroup SAIEx_Exported_Functions SAI Extended Exported Functions | |
| * @{ | |
| */ | |
| /** @defgroup SAIEx_Exported_Functions_Group1 Extension features functions | |
| * @brief Extension features functions | |
| * | |
| @verbatim | |
| =============================================================================== | |
| ##### Extension features Functions ##### | |
| =============================================================================== | |
| [..] | |
| This subsection provides a set of functions allowing to manage the possible | |
| SAI clock sources. | |
| @endverbatim | |
| * @{ | |
| */ | |
| /** | |
| * @brief Configure SAI Block synchronization mode | |
| * @param hsai: pointer to a SAI_HandleTypeDef structure that contains | |
| * the configuration information for SAI module. | |
| * @retval SAI Clock Input | |
| */ | |
| void SAI_BlockSynchroConfig(SAI_HandleTypeDef *hsai) | |
| { | |
| uint32_t tmpregisterGCR = 0; | |
| /* This setting must be done with both audio block (A & B) disabled */ | |
| switch(hsai->Init.SynchroExt) | |
| { | |
| case SAI_SYNCEXT_DISABLE : | |
| tmpregisterGCR = 0; | |
| break; | |
| case SAI_SYNCEXT_IN_ENABLE : | |
| tmpregisterGCR = SAI_GCR_SYNCIN_0; | |
| break; | |
| case SAI_SYNCEXT_OUTBLOCKA_ENABLE : | |
| tmpregisterGCR = SAI_GCR_SYNCOUT_0; | |
| break; | |
| case SAI_SYNCEXT_OUTBLOCKB_ENABLE : | |
| tmpregisterGCR = SAI_GCR_SYNCOUT_1; | |
| break; | |
| default : | |
| break; | |
| } | |
| if((hsai->Instance == SAI1_Block_A) || (hsai->Instance == SAI1_Block_B)) | |
| { | |
| SAI1->GCR = tmpregisterGCR; | |
| } | |
| else | |
| { | |
| SAI2->GCR = tmpregisterGCR; | |
| } | |
| } | |
| /** | |
| * @brief Get SAI Input Clock based on SAI source clock selection | |
| * @param hsai: pointer to a SAI_HandleTypeDef structure that contains | |
| * the configuration information for SAI module. | |
| * @retval SAI Clock Input | |
| */ | |
| uint32_t SAI_GetInputClock(SAI_HandleTypeDef *hsai) | |
| { | |
| /* This variable used to store the SAI_CK_x (value in Hz) */ | |
| uint32_t saiclocksource = 0; | |
| if ((hsai->Instance == SAI1_Block_A) || (hsai->Instance == SAI1_Block_B)) | |
| { | |
| saiclocksource = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_SAI1); | |
| } | |
| else /* SAI2_Block_A || SAI2_Block_B*/ | |
| { | |
| saiclocksource = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_SAI2); | |
| } | |
| /* the return result is the value of SAI clock */ | |
| return saiclocksource; | |
| } | |
| /** | |
| * @} | |
| */ | |
| /** | |
| * @} | |
| */ | |
| #endif /* HAL_SAI_MODULE_ENABLED */ | |
| /** | |
| * @} | |
| */ | |
| /** | |
| * @} | |
| */ | |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |