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  1. /**
  2.   ******************************************************************************
  3.   * @file    stm32f1xx_hal_i2s.h
  4.   * @author  MCD Application Team
  5.   * @version V1.0.4
  6.   * @date    29-April-2016
  7.   * @brief   Header file of I2S HAL module.
  8.   ******************************************************************************
  9.   * @attention
  10.   *
  11.   * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
  12.   *
  13.   * Redistribution and use in source and binary forms, with or without modification,
  14.   * are permitted provided that the following conditions are met:
  15.   *   1. Redistributions of source code must retain the above copyright notice,
  16.   *      this list of conditions and the following disclaimer.
  17.   *   2. Redistributions in binary form must reproduce the above copyright notice,
  18.   *      this list of conditions and the following disclaimer in the documentation
  19.   *      and/or other materials provided with the distribution.
  20.   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  21.   *      may be used to endorse or promote products derived from this software
  22.   *      without specific prior written permission.
  23.   *
  24.   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  25.   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26.   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  27.   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  28.   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29.   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30.   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  31.   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  32.   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  33.   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34.   *
  35.   ******************************************************************************
  36.   */
  37.  
  38. /* Define to prevent recursive inclusion -------------------------------------*/
  39. #ifndef __STM32F1xx_HAL_I2S_H
  40. #define __STM32F1xx_HAL_I2S_H
  41.  
  42. #ifdef __cplusplus
  43.  extern "C" {
  44. #endif
  45.  
  46. #if defined(STM32F103xE) || defined(STM32F103xG) || defined(STM32F105xC) || defined(STM32F107xC)
  47.  
  48. /* Includes ------------------------------------------------------------------*/
  49. #include "stm32f1xx_hal_def.h"  
  50.  
  51. /** @addtogroup STM32F1xx_HAL_Driver
  52.   * @{
  53.   */
  54.  
  55. /** @addtogroup I2S
  56.   * @{
  57.   */
  58.  
  59. /* Exported types ------------------------------------------------------------*/
  60. /** @defgroup I2S_Exported_Types I2S Exported Types
  61.   * @{
  62.   */
  63.  
  64. /**
  65.   * @brief I2S Init structure definition  
  66.   */
  67. typedef struct
  68. {
  69.   uint32_t Mode;         /*!< Specifies the I2S operating mode.
  70.                               This parameter can be a value of @ref I2S_Mode */
  71.  
  72.   uint32_t Standard;     /*!< Specifies the standard used for the I2S communication.
  73.                               This parameter can be a value of @ref I2S_Standard */
  74.  
  75.   uint32_t DataFormat;   /*!< Specifies the data format for the I2S communication.
  76.                               This parameter can be a value of @ref I2S_Data_Format */
  77.  
  78.   uint32_t MCLKOutput;   /*!< Specifies whether the I2S MCLK output is enabled or not.
  79.                               This parameter can be a value of @ref I2S_MCLK_Output */
  80.  
  81.   uint32_t AudioFreq;    /*!< Specifies the frequency selected for the I2S communication.
  82.                               This parameter can be a value of @ref I2S_Audio_Frequency */
  83.  
  84.   uint32_t CPOL;         /*!< Specifies the idle state of the I2S clock.
  85.                               This parameter can be a value of @ref I2S_Clock_Polarity */
  86.  
  87. }I2S_InitTypeDef;
  88.  
  89. /**
  90.   * @brief  HAL State structures definition
  91.   */
  92. typedef enum
  93. {
  94.   HAL_I2S_STATE_RESET      = 0x00,  /*!< I2S not yet initialized or disabled                */
  95.   HAL_I2S_STATE_READY      = 0x01,  /*!< I2S initialized and ready for use                  */
  96.   HAL_I2S_STATE_BUSY       = 0x02,  /*!< I2S internal process is ongoing                    */  
  97.   HAL_I2S_STATE_BUSY_TX    = 0x12,  /*!< Data Transmission process is ongoing               */
  98.   HAL_I2S_STATE_BUSY_RX    = 0x22,  /*!< Data Reception process is ongoing                  */
  99.   HAL_I2S_STATE_TIMEOUT    = 0x03,  /*!< I2S timeout state                                  */
  100.   HAL_I2S_STATE_ERROR      = 0x04   /*!< I2S error state                                    */      
  101. }HAL_I2S_StateTypeDef;
  102.  
  103. /**
  104.   * @brief I2S handle Structure definition  
  105.   */
  106. typedef struct
  107. {
  108.   SPI_TypeDef                *Instance;    /* I2S registers base address        */
  109.  
  110.   I2S_InitTypeDef            Init;         /* I2S communication parameters      */
  111.  
  112.   uint16_t                   *pTxBuffPtr;  /* Pointer to I2S Tx transfer buffer */
  113.  
  114.   __IO uint16_t              TxXferSize;   /* I2S Tx transfer size              */
  115.  
  116.   __IO uint16_t              TxXferCount;  /* I2S Tx transfer Counter           */
  117.  
  118.   uint16_t                   *pRxBuffPtr;  /* Pointer to I2S Rx transfer buffer */
  119.  
  120.   __IO uint16_t              RxXferSize;   /* I2S Rx transfer size              */
  121.  
  122.   __IO uint16_t              RxXferCount;  /* I2S Rx transfer counter
  123.                                               (This field is initialized at the
  124.                                                same value as transfer size at the
  125.                                                beginning of the transfer and
  126.                                                decremented when a sample is received.
  127.                                                NbSamplesReceived = RxBufferSize-RxBufferCount) */
  128.  
  129.   DMA_HandleTypeDef          *hdmatx;      /* I2S Tx DMA handle parameters      */
  130.  
  131.   DMA_HandleTypeDef          *hdmarx;      /* I2S Rx DMA handle parameters      */
  132.  
  133.   __IO HAL_LockTypeDef       Lock;         /* I2S locking object                */
  134.  
  135.   __IO HAL_I2S_StateTypeDef  State;        /* I2S communication state           */
  136.  
  137.   __IO uint32_t  ErrorCode;    /* I2S Error code                    */
  138.  
  139. }I2S_HandleTypeDef;
  140. /**
  141.   * @}
  142.   */
  143.  
  144. /* Exported constants --------------------------------------------------------*/
  145. /** @defgroup I2S_Exported_Constants I2S Exported Constants
  146.   * @{
  147.   */
  148.  
  149. /** @defgroup I2S_Error_Codes I2S Error Codes
  150.   * @{
  151.   */
  152. #define HAL_I2S_ERROR_NONE      ((uint32_t)0x00)    /*!< No error                    */
  153. #define HAL_I2S_ERROR_UDR       ((uint32_t)0x01)    /*!< I2S Underrun error          */
  154. #define HAL_I2S_ERROR_OVR       ((uint32_t)0x02)    /*!< I2S Overrun error           */
  155. #define HAL_I2S_ERROR_FRE       ((uint32_t)0x04)    /*!< I2S Frame format error      */
  156. #define HAL_I2S_ERROR_DMA       ((uint32_t)0x08)    /*!< DMA transfer error          */
  157.  
  158. /**
  159.   * @}
  160.   */
  161.  
  162.  
  163. /** @defgroup I2S_Mode I2S Mode
  164.   * @{
  165.   */
  166. #define I2S_MODE_SLAVE_TX                ((uint32_t) 0x00000000)
  167. #define I2S_MODE_SLAVE_RX                ((uint32_t) SPI_I2SCFGR_I2SCFG_0)
  168. #define I2S_MODE_MASTER_TX               ((uint32_t) SPI_I2SCFGR_I2SCFG_1)
  169. #define I2S_MODE_MASTER_RX               ((uint32_t)(SPI_I2SCFGR_I2SCFG_0 |\
  170.                                                      SPI_I2SCFGR_I2SCFG_1))
  171.  
  172. /**
  173.   * @}
  174.   */
  175.  
  176. /** @defgroup I2S_Standard I2S Standard
  177.   * @{
  178.   */
  179. #define I2S_STANDARD_PHILIPS             ((uint32_t) 0x00000000)
  180. #define I2S_STANDARD_MSB                 ((uint32_t) SPI_I2SCFGR_I2SSTD_0)
  181. #define I2S_STANDARD_LSB                 ((uint32_t) SPI_I2SCFGR_I2SSTD_1)
  182. #define I2S_STANDARD_PCM_SHORT           ((uint32_t)(SPI_I2SCFGR_I2SSTD_0 |\
  183.                                                      SPI_I2SCFGR_I2SSTD_1))
  184. #define I2S_STANDARD_PCM_LONG            ((uint32_t)(SPI_I2SCFGR_I2SSTD_0 |\
  185.                                                      SPI_I2SCFGR_I2SSTD_1 |\
  186.                                                      SPI_I2SCFGR_PCMSYNC))
  187.  
  188. /**
  189.   * @}
  190.   */
  191.  
  192. /** @defgroup I2S_Data_Format I2S Data Format
  193.   * @{
  194.   */
  195. #define I2S_DATAFORMAT_16B               ((uint32_t) 0x00000000)
  196. #define I2S_DATAFORMAT_16B_EXTENDED      ((uint32_t) SPI_I2SCFGR_CHLEN)
  197. #define I2S_DATAFORMAT_24B               ((uint32_t)(SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN_0))
  198. #define I2S_DATAFORMAT_32B               ((uint32_t)(SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN_1))
  199. /**
  200.   * @}
  201.   */
  202.  
  203. /** @defgroup I2S_MCLK_Output I2S MCLK Output
  204.   * @{
  205.   */
  206. #define I2S_MCLKOUTPUT_ENABLE           ((uint32_t)SPI_I2SPR_MCKOE)
  207. #define I2S_MCLKOUTPUT_DISABLE          ((uint32_t)0x00000000)
  208. /**
  209.   * @}
  210.   */
  211.  
  212. /** @defgroup I2S_Audio_Frequency I2S Audio Frequency
  213.   * @{
  214.   */
  215. #define I2S_AUDIOFREQ_192K               ((uint32_t)192000)
  216. #define I2S_AUDIOFREQ_96K                ((uint32_t)96000)
  217. #define I2S_AUDIOFREQ_48K                ((uint32_t)48000)
  218. #define I2S_AUDIOFREQ_44K                ((uint32_t)44100)
  219. #define I2S_AUDIOFREQ_32K                ((uint32_t)32000)
  220. #define I2S_AUDIOFREQ_22K                ((uint32_t)22050)
  221. #define I2S_AUDIOFREQ_16K                ((uint32_t)16000)
  222. #define I2S_AUDIOFREQ_11K                ((uint32_t)11025)
  223. #define I2S_AUDIOFREQ_8K                 ((uint32_t)8000)
  224. #define I2S_AUDIOFREQ_DEFAULT            ((uint32_t)2)
  225. /**
  226.   * @}
  227.   */
  228.  
  229. /** @defgroup I2S_Clock_Polarity I2S Clock Polarity
  230.   * @{
  231.   */
  232. #define I2S_CPOL_LOW                    ((uint32_t)0x00000000)
  233. #define I2S_CPOL_HIGH                   ((uint32_t)SPI_I2SCFGR_CKPOL)
  234. /**
  235.   * @}
  236.   */
  237.  
  238. /** @defgroup I2S_Interrupt_configuration_definition I2S Interrupt configuration definition
  239.   * @{
  240.   */
  241. #define I2S_IT_TXE                      SPI_CR2_TXEIE
  242. #define I2S_IT_RXNE                     SPI_CR2_RXNEIE
  243. #define I2S_IT_ERR                      SPI_CR2_ERRIE
  244. /**
  245.   * @}
  246.   */
  247.  
  248. /** @defgroup I2S_Flag_definition I2S Flag definition
  249.   * @{
  250.   */
  251. #define I2S_FLAG_TXE                    SPI_SR_TXE
  252. #define I2S_FLAG_RXNE                   SPI_SR_RXNE
  253.  
  254. #define I2S_FLAG_UDR                    SPI_SR_UDR
  255. #define I2S_FLAG_OVR                    SPI_SR_OVR
  256. #define I2S_FLAG_FRE                    SPI_SR_FRE
  257.  
  258. #define I2S_FLAG_CHSIDE                 SPI_SR_CHSIDE
  259. #define I2S_FLAG_BSY                    SPI_SR_BSY
  260. /**
  261.   * @}
  262.   */
  263.  
  264. /**
  265.   * @}
  266.   */
  267.  
  268. /* Exported macro ------------------------------------------------------------*/
  269. /** @defgroup I2S_Exported_macros I2S Exported Macros
  270.   * @{
  271.   */
  272.  
  273. /** @brief  Reset I2S handle state
  274.   * @param  __HANDLE__: specifies the I2S Handle.
  275.   * @retval None
  276.   */
  277. #define __HAL_I2S_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_I2S_STATE_RESET)
  278.  
  279. /** @brief  Enable the specified SPI peripheral (in I2S mode).
  280.   * @param  __HANDLE__: specifies the I2S Handle.
  281.   * @retval None
  282.   */
  283. #define __HAL_I2S_ENABLE(__HANDLE__)    (SET_BIT((__HANDLE__)->Instance->I2SCFGR, SPI_I2SCFGR_I2SE))
  284.  
  285. /** @brief  Disable the specified SPI peripheral (in I2S mode).
  286.   * @param  __HANDLE__: specifies the I2S Handle.
  287.   * @retval None
  288.   */
  289. #define __HAL_I2S_DISABLE(__HANDLE__) (CLEAR_BIT((__HANDLE__)->Instance->I2SCFGR, SPI_I2SCFGR_I2SE))
  290.  
  291. /** @brief  Enable the specified I2S interrupts.
  292.   * @param  __HANDLE__: specifies the I2S Handle.
  293.   * @param  __INTERRUPT__: specifies the interrupt source to enable or disable.
  294.   *         This parameter can be one of the following values:
  295.   *            @arg I2S_IT_TXE: Tx buffer empty interrupt enable
  296.   *            @arg I2S_IT_RXNE: RX buffer not empty interrupt enable
  297.   *            @arg I2S_IT_ERR: Error interrupt enable
  298.   * @retval None
  299.   */  
  300. #define __HAL_I2S_ENABLE_IT(__HANDLE__, __INTERRUPT__)    (SET_BIT((__HANDLE__)->Instance->CR2,(__INTERRUPT__)))
  301.  
  302. /** @brief  Disable the specified I2S interrupts.
  303.   * @param  __HANDLE__: specifies the I2S Handle.
  304.   * @param  __INTERRUPT__: specifies the interrupt source to enable or disable.
  305.   *         This parameter can be one of the following values:
  306.   *            @arg I2S_IT_TXE: Tx buffer empty interrupt enable
  307.   *            @arg I2S_IT_RXNE: RX buffer not empty interrupt enable
  308.   *            @arg I2S_IT_ERR: Error interrupt enable
  309.   * @retval None
  310.   */
  311. #define __HAL_I2S_DISABLE_IT(__HANDLE__, __INTERRUPT__) (CLEAR_BIT((__HANDLE__)->Instance->CR2,(__INTERRUPT__)))
  312.  
  313. /** @brief  Checks if the specified I2S interrupt source is enabled or disabled.
  314.   * @param  __HANDLE__: specifies the I2S Handle.
  315.   *         This parameter can be I2S where x: 1, 2, or 3 to select the I2S peripheral.
  316.   * @param  __INTERRUPT__: specifies the I2S interrupt source to check.
  317.   *          This parameter can be one of the following values:
  318.   *            @arg I2S_IT_TXE: Tx buffer empty interrupt enable
  319.   *            @arg I2S_IT_RXNE: RX buffer not empty interrupt enable
  320.   *            @arg I2S_IT_ERR: Error interrupt enable
  321.   * @retval The new state of __IT__ (TRUE or FALSE).
  322.   */
  323. #define __HAL_I2S_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) ((((__HANDLE__)->Instance->CR2 & (__INTERRUPT__)) == (__INTERRUPT__)) ? SET : RESET)
  324.  
  325. /** @brief  Checks whether the specified I2S flag is set or not.
  326.   * @param  __HANDLE__: specifies the I2S Handle.
  327.   * @param  __FLAG__: specifies the flag to check.
  328.   *         This parameter can be one of the following values:
  329.   *            @arg I2S_FLAG_RXNE: Receive buffer not empty flag
  330.   *            @arg I2S_FLAG_TXE: Transmit buffer empty flag
  331.   *            @arg I2S_FLAG_UDR: Underrun flag
  332.   *            @arg I2S_FLAG_OVR: Overrun flag
  333.   *            @arg I2S_FLAG_CHSIDE: Channel Side flag
  334.   *            @arg I2S_FLAG_BSY: Busy flag
  335.   * @retval The new state of __FLAG__ (TRUE or FALSE).
  336.   */
  337. #define __HAL_I2S_GET_FLAG(__HANDLE__, __FLAG__) ((((__HANDLE__)->Instance->SR) & (__FLAG__)) == (__FLAG__))
  338.  
  339. /** @brief Clears the I2S OVR pending flag.
  340.   * @param  __HANDLE__: specifies the I2S Handle.
  341.   * @retval None
  342.   */                                                                                                  
  343. #define __HAL_I2S_CLEAR_OVRFLAG(__HANDLE__) do{__IO uint32_t tmpreg = (__HANDLE__)->Instance->DR;\
  344.                                                              tmpreg = (__HANDLE__)->Instance->SR;\
  345.                                                              UNUSED(tmpreg); \
  346.                                               }while(0)
  347. /** @brief Clears the I2S UDR pending flag.
  348.   * @param  __HANDLE__: specifies the I2S Handle.
  349.   * @retval None
  350.   */
  351. #define __HAL_I2S_CLEAR_UDRFLAG(__HANDLE__)((__HANDLE__)->Instance->SR)
  352. /**
  353.   * @}
  354.   */
  355.                                                
  356. /* Exported functions --------------------------------------------------------*/
  357. /** @addtogroup I2S_Exported_Functions
  358.   * @{
  359.   */
  360.                                                
  361. /** @addtogroup I2S_Exported_Functions_Group1
  362.   * @{
  363.   */
  364. /* Initialization/de-initialization functions  ********************************/
  365. HAL_StatusTypeDef HAL_I2S_Init(I2S_HandleTypeDef *hi2s);
  366. HAL_StatusTypeDef HAL_I2S_DeInit (I2S_HandleTypeDef *hi2s);
  367. void HAL_I2S_MspInit(I2S_HandleTypeDef *hi2s);
  368. void HAL_I2S_MspDeInit(I2S_HandleTypeDef *hi2s);
  369. /**
  370.   * @}
  371.   */
  372.  
  373. /** @addtogroup I2S_Exported_Functions_Group2
  374.   * @{
  375.   */
  376. /* I/O operation functions  ***************************************************/
  377.  /* Blocking mode: Polling */
  378. HAL_StatusTypeDef HAL_I2S_Transmit(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size, uint32_t Timeout);
  379. HAL_StatusTypeDef HAL_I2S_Receive(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size, uint32_t Timeout);
  380.  
  381.  /* Non-Blocking mode: Interrupt */
  382. HAL_StatusTypeDef HAL_I2S_Transmit_IT(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
  383. HAL_StatusTypeDef HAL_I2S_Receive_IT(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
  384. void HAL_I2S_IRQHandler(I2S_HandleTypeDef *hi2s);
  385.  
  386. /* Non-Blocking mode: DMA */
  387. HAL_StatusTypeDef HAL_I2S_Transmit_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
  388. HAL_StatusTypeDef HAL_I2S_Receive_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
  389.  
  390. HAL_StatusTypeDef HAL_I2S_DMAPause(I2S_HandleTypeDef *hi2s);
  391. HAL_StatusTypeDef HAL_I2S_DMAResume(I2S_HandleTypeDef *hi2s);
  392. HAL_StatusTypeDef HAL_I2S_DMAStop(I2S_HandleTypeDef *hi2s);
  393.  
  394. /* Callbacks used in non blocking modes (Interrupt and DMA) *******************/
  395. void HAL_I2S_TxHalfCpltCallback(I2S_HandleTypeDef *hi2s);
  396. void HAL_I2S_TxCpltCallback(I2S_HandleTypeDef *hi2s);
  397. void HAL_I2S_RxHalfCpltCallback(I2S_HandleTypeDef *hi2s);
  398. void HAL_I2S_RxCpltCallback(I2S_HandleTypeDef *hi2s);
  399. void HAL_I2S_ErrorCallback(I2S_HandleTypeDef *hi2s);
  400. /**
  401.   * @}
  402.   */
  403.  
  404. /** @addtogroup I2S_Exported_Functions_Group3
  405.   * @{
  406.   */
  407. /* Peripheral Control and State functions  ************************************/
  408. HAL_I2S_StateTypeDef HAL_I2S_GetState(I2S_HandleTypeDef *hi2s);
  409. uint32_t HAL_I2S_GetError(I2S_HandleTypeDef *hi2s);
  410. /**
  411.   * @}
  412.   */
  413.  
  414. /**
  415.   * @}
  416.   */
  417.  
  418. /* Private macros ------------------------------------------------------------*/
  419. /** @defgroup I2S_Private_Macros I2S Private Macros
  420.   * @{
  421.   */
  422. #define IS_I2S_MODE(MODE) (((MODE) == I2S_MODE_SLAVE_TX)  || \
  423.                            ((MODE) == I2S_MODE_SLAVE_RX)  || \
  424.                            ((MODE) == I2S_MODE_MASTER_TX) || \
  425.                            ((MODE) == I2S_MODE_MASTER_RX))
  426.  
  427. #define IS_I2S_STANDARD(STANDARD) (((STANDARD) == I2S_STANDARD_PHILIPS)   || \
  428.                                    ((STANDARD) == I2S_STANDARD_MSB)       || \
  429.                                    ((STANDARD) == I2S_STANDARD_LSB)       || \
  430.                                    ((STANDARD) == I2S_STANDARD_PCM_SHORT) || \
  431.                                    ((STANDARD) == I2S_STANDARD_PCM_LONG))
  432.  
  433. #define IS_I2S_DATA_FORMAT(FORMAT) (((FORMAT) == I2S_DATAFORMAT_16B)          || \
  434.                                     ((FORMAT) == I2S_DATAFORMAT_16B_EXTENDED) || \
  435.                                     ((FORMAT) == I2S_DATAFORMAT_24B)          || \
  436.                                     ((FORMAT) == I2S_DATAFORMAT_32B))
  437.  
  438. #define IS_I2S_MCLK_OUTPUT(OUTPUT) (((OUTPUT) == I2S_MCLKOUTPUT_ENABLE) || \
  439.                                     ((OUTPUT) == I2S_MCLKOUTPUT_DISABLE))
  440.  
  441. #define IS_I2S_AUDIO_FREQ(FREQ) ((((FREQ) >= I2S_AUDIOFREQ_8K)    && \
  442.                                   ((FREQ) <= I2S_AUDIOFREQ_192K)) || \
  443.                                   ((FREQ) == I2S_AUDIOFREQ_DEFAULT))
  444.  
  445. #define IS_I2S_CPOL(CPOL) (((CPOL) == I2S_CPOL_LOW) || \
  446.                            ((CPOL) == I2S_CPOL_HIGH))
  447. /**
  448.   * @}
  449.   */
  450.  
  451. /* Private Fonctions ---------------------------------------------------------*/
  452. /** @defgroup I2S_Private_Functions I2S Private Functions
  453.   * @{
  454.   */
  455. /* Private functions are defined in stm32f1xx_hal_i2s.c file */
  456. /**
  457.   * @}
  458.   */
  459.  
  460. /**
  461.   * @}
  462.   */
  463.  
  464. /**
  465.   * @}
  466.   */
  467. #endif /* STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */
  468.  
  469. #ifdef __cplusplus
  470. }
  471. #endif
  472.  
  473. #endif /* __STM32F1xx_HAL_I2S_H */
  474.  
  475. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  476.