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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sai_ex.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sai_ex.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sai_ex.c b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sai_ex.c new file mode 100644 index 0000000000..a9d16909a1 --- /dev/null +++ b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sai_ex.c @@ -0,0 +1,272 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_sai_ex.c + * @author MCD Application Team + * @version V1.4.0 + * @date 14-August-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 ##### + ============================================================================== + + [..] Comparing to other previous devices, the SAI interface for STM32F446xx + devices contains the following additional features : + + (+) Possibility to be clocked from PLLR + + ##### 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 "stm32f4xx_hal.h" + +/** @addtogroup STM32F4xx_HAL_Driver + * @{ + */ + +/** @defgroup SAIEx SAIEx + * @brief SAI Extension HAL module driver + * @{ + */ + +#ifdef HAL_SAI_MODULE_ENABLED + +#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\ + defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) + +/* 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; + +#if defined(STM32F446xx) + /* 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; + } + + if((hsai->Instance == SAI1_Block_A) || (hsai->Instance == SAI1_Block_B)) + { + SAI1->GCR = tmpregisterGCR; + } + else + { + SAI2->GCR = tmpregisterGCR; + } +#endif /* STM32F446xx */ +#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\ + defined(STM32F469xx) || defined(STM32F479xx) + /* 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_OUTBLOCKA_ENABLE : + tmpregisterGCR = SAI_GCR_SYNCOUT_0; + break; + case SAI_SYNCEXT_OUTBLOCKB_ENABLE : + tmpregisterGCR = SAI_GCR_SYNCOUT_1; + break; + } + SAI1->GCR = tmpregisterGCR; +#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F469xx || STM32F479xx */ +} + /** + * @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 defined(STM32F446xx) + 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); + } +#endif /* STM32F446xx */ +#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\ + defined(STM32F469xx) || defined(STM32F479xx) + uint32_t vcoinput = 0, tmpreg = 0; + + /* Check the SAI Block parameters */ + assert_param(IS_SAI_CLK_SOURCE(hsai->Init.ClockSource)); + + /* SAI Block clock source selection */ + if(hsai->Instance == SAI1_Block_A) + { + __HAL_RCC_SAI_BLOCKACLKSOURCE_CONFIG(hsai->Init.ClockSource); + } + else + { + __HAL_RCC_SAI_BLOCKBCLKSOURCE_CONFIG((uint32_t)(hsai->Init.ClockSource << 2)); + } + + /* VCO Input Clock value calculation */ + 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))); + } + + /* SAI_CLK_x : SAI Block Clock configuration for different clock sources selected */ + if(hsai->Init.ClockSource == SAI_CLKSOURCE_PLLSAI) + { + /* Configure the PLLI2S division factor */ + /* PLLSAI_VCO Input = PLL_SOURCE/PLLM */ + /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN */ + /* SAI_CLK(first level) = PLLSAI_VCO Output/PLLSAIQ */ + tmpreg = (RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> 24; + saiclocksource = (vcoinput * ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIN) >> 6))/(tmpreg); + + /* SAI_CLK_x = SAI_CLK(first level)/PLLSAIDIVQ */ + tmpreg = (((RCC->DCKCFGR & RCC_DCKCFGR_PLLSAIDIVQ) >> 8) + 1); + saiclocksource = saiclocksource/(tmpreg); + + } + else if(hsai->Init.ClockSource == SAI_CLKSOURCE_PLLI2S) + { + /* Configure the PLLI2S division factor */ + /* PLLI2S_VCO Input = PLL_SOURCE/PLLM */ + /* PLLI2S_VCO Output = PLLI2S_VCO Input * PLLI2SN */ + /* SAI_CLK(first level) = PLLI2S_VCO Output/PLLI2SQ */ + tmpreg = (RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SQ) >> 24; + saiclocksource = (vcoinput * ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SN) >> 6))/(tmpreg); + + /* SAI_CLK_x = SAI_CLK(first level)/PLLI2SDIVQ */ + tmpreg = ((RCC->DCKCFGR & RCC_DCKCFGR_PLLI2SDIVQ) + 1); + saiclocksource = saiclocksource/(tmpreg); + } + else /* sConfig->ClockSource == SAI_CLKSource_Ext */ + { + /* Enable the External Clock selection */ + __HAL_RCC_I2S_CONFIG(RCC_I2SCLKSOURCE_EXT); + + saiclocksource = EXTERNAL_CLOCK_VALUE; + } +#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F469xx || STM32F479xx */ + /* the return result is the value of SAI clock */ + return saiclocksource; +} + +/** + * @} + */ + +/** + * @} + */ + +#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx || STM32F479xx */ +#endif /* HAL_SAI_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |