tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_i2s.h

   1 /**
   2   ******************************************************************************
   3   * @file    stm32l0xx_hal_i2s.h
   4   * @author  MCD Application Team
   5   * @version V1.2.0
   6   * @date    06-February-2015
   7   * @brief   Header file of I2S HAL module.
   8   ******************************************************************************
   9   * @attention
  10   *
  11   * <h2><center>&copy; COPYRIGHT(c) 2015 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 __STM32L0xx_HAL_I2S_H
  40 #define __STM32L0xx_HAL_I2S_H
  41
  42 #ifdef __cplusplus
  43  extern "C" {
  44 #endif
  45
  46 #if !defined (STM32L031xx) && !defined (STM32L041xx)
  47 /* Includes ------------------------------------------------------------------*/
  48 #include "stm32l0xx_hal_def.h"
  49
  50 /** @addtogroup STM32L0xx_HAL_Driver
  51   * @{
  52   */
  53
  54 /** @addtogroup I2S
  55   * @{
  56   */
  57
  58 /* Exported types ------------------------------------------------------------*/
  59 /** @defgroup I2S_Exported_Types I2S Exported Types
  60   * @{
  61   */
  62
  63 /**
  64   * @brief I2S Init structure definition
  65   */
  66 typedef struct
  67 {
  68   uint32_t Mode;         /*!< Specifies the I2S operating mode.
  69                               This parameter can be a value of @ref I2S_Mode */
  70
  71   uint32_t Standard;     /*!< Specifies the standard used for the I2S communication.
  72                               This parameter can be a value of @ref I2S_Standard */
  73
  74   uint32_t DataFormat;   /*!< Specifies the data format for the I2S communication.
  75                               This parameter can be a value of @ref I2S_Data_Format */
  76
  77   uint32_t MCLKOutput;   /*!< Specifies whether the I2S MCLK output is enabled or not.
  78                               This parameter can be a value of @ref I2S_MCLK_Output */
  79
  80   uint32_t AudioFreq;    /*!< Specifies the frequency selected for the I2S communication.
  81                               This parameter can be a value of @ref I2S_Audio_Frequency */
  82
  83   uint32_t CPOL;         /*!< Specifies the idle state of the I2S clock.
  84                               This parameter can be a value of @ref I2S_Clock_Polarity */
  85
  86 }I2S_InitTypeDef;
  87
  88 /**
  89   * @brief  HAL State structures definition
  90   */
  91 typedef enum
  92 {
  93   HAL_I2S_STATE_RESET      = 0x00,  /*!< I2S not yet initialized or disabled                */
  94   HAL_I2S_STATE_READY      = 0x01,  /*!< I2S initialized and ready for use                  */
  95   HAL_I2S_STATE_BUSY       = 0x02,  /*!< I2S internal process is ongoing                    */
  96   HAL_I2S_STATE_BUSY_TX    = 0x12,  /*!< Data Transmission process is ongoing               */
  97   HAL_I2S_STATE_BUSY_RX    = 0x22,  /*!< Data Reception process is ongoing                  */
  98   HAL_I2S_STATE_TIMEOUT    = 0x03,  /*!< I2S timeout state                                  */
  99   HAL_I2S_STATE_ERROR      = 0x04   /*!< I2S error state                                    */
 100 }HAL_I2S_StateTypeDef;
 101
 102 /**
 103   * @brief I2S handle Structure definition
 104   */
 105 typedef struct
 106 {
 107   SPI_TypeDef                *Instance;    /* I2S registers base address        */
 108
 109   I2S_InitTypeDef            Init;         /* I2S communication parameters      */
 110
 111   uint16_t                   *pTxBuffPtr;  /* Pointer to I2S Tx transfer buffer */
 112
 113   __IO uint16_t              TxXferSize;   /* I2S Tx transfer size              */
 114
 115   __IO uint16_t              TxXferCount;  /* I2S Tx transfer Counter           */
 116
 117   uint16_t                   *pRxBuffPtr;  /* Pointer to I2S Rx transfer buffer */
 118
 119   __IO uint16_t              RxXferSize;   /* I2S Rx transfer size              */
 120
 121   __IO uint16_t              RxXferCount;  /* I2S Rx transfer counter
 122                                               (This field is initialized at the
 123                                                same value as transfer size at the
 124                                                beginning of the transfer and
 125                                                decremented when a sample is received.
 126                                                NbSamplesReceived = RxBufferSize-RxBufferCount) */
 127
 128   DMA_HandleTypeDef          *hdmatx;      /* I2S Tx DMA handle parameters      */
 129
 130   DMA_HandleTypeDef          *hdmarx;      /* I2S Rx DMA handle parameters      */
 131
 132   __IO HAL_LockTypeDef       Lock;         /* I2S locking object                */
 133
 134   __IO HAL_I2S_StateTypeDef  State;        /* I2S communication state           */
 135
 136   __IO  uint32_t             ErrorCode;    /* I2S Error code                    */
 137
 138 }I2S_HandleTypeDef;
 139 /**
 140   * @}
 141   */
 142
 143 /* Exported constants --------------------------------------------------------*/
 144 /** @defgroup I2S_Exported_Constants I2S Exported Constants
 145   * @{
 146   */
 147
 148 /**
 149   * @defgroup  I2S_ErrorCode I2S Error Code
 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 /** @defgroup I2S_Mode I2S Mode
 162   * @{
 163   */
 164 #define I2S_MODE_SLAVE_TX                ((uint32_t) 0x00000000)
 165 #define I2S_MODE_SLAVE_RX                ((uint32_t) SPI_I2SCFGR_I2SCFG_0)
 166 #define I2S_MODE_MASTER_TX               ((uint32_t) SPI_I2SCFGR_I2SCFG_1)
 167 #define I2S_MODE_MASTER_RX               ((uint32_t)(SPI_I2SCFGR_I2SCFG_0 |\
 168                                                      SPI_I2SCFGR_I2SCFG_1))
 169 /**
 170   * @}
 171   */
 172
 173 /** @defgroup I2S_Standard I2S Standard
 174   * @{
 175   */
 176 #define I2S_STANDARD_PHILIPS             ((uint32_t) 0x00000000)
 177 #define I2S_STANDARD_MSB                 ((uint32_t) SPI_I2SCFGR_I2SSTD_0)
 178 #define I2S_STANDARD_LSB                 ((uint32_t) SPI_I2SCFGR_I2SSTD_1)
 179 #define I2S_STANDARD_PCM_SHORT           ((uint32_t)(SPI_I2SCFGR_I2SSTD_0 |\
 180                                                      SPI_I2SCFGR_I2SSTD_1))
 181 #define I2S_STANDARD_PCM_LONG            ((uint32_t)(SPI_I2SCFGR_I2SSTD_0 |\
 182                                                      SPI_I2SCFGR_I2SSTD_1 |\
 183                                                      SPI_I2SCFGR_PCMSYNC))
 184 /** @defgroup I2S_Legacy I2S Legacy
 185   * @{
 186   */
 187 #define I2S_STANDARD_PHILLIPS      I2S_STANDARD_PHILIPS
 188 /**
 189   * @}
 190   */
 191
 192 /**
 193   * @}
 194   */
 195
 196 /** @defgroup I2S_Data_Format I2S Data Format
 197   * @{
 198   */
 199 #define I2S_DATAFORMAT_16B               ((uint32_t) 0x00000000)
 200 #define I2S_DATAFORMAT_16B_EXTENDED      ((uint32_t) SPI_I2SCFGR_CHLEN)
 201 #define I2S_DATAFORMAT_24B               ((uint32_t)(SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN_0))
 202 #define I2S_DATAFORMAT_32B               ((uint32_t)(SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN_1))
 203 /**
 204   * @}
 205   */
 206
 207 /** @defgroup I2S_MCLK_Output I2S MCLK Output
 208   * @{
 209   */
 210 #define I2S_MCLKOUTPUT_ENABLE           ((uint32_t)SPI_I2SPR_MCKOE)
 211 #define I2S_MCLKOUTPUT_DISABLE          ((uint32_t)0x00000000)
 212 /**
 213   * @}
 214   */
 215
 216 /** @defgroup I2S_Audio_Frequency I2S Audio Frequency
 217   * @{
 218   */
 219 #define I2S_AUDIOFREQ_192K               ((uint32_t)192000)
 220 #define I2S_AUDIOFREQ_96K                ((uint32_t)96000)
 221 #define I2S_AUDIOFREQ_48K                ((uint32_t)48000)
 222 #define I2S_AUDIOFREQ_44K                ((uint32_t)44100)
 223 #define I2S_AUDIOFREQ_32K                ((uint32_t)32000)
 224 #define I2S_AUDIOFREQ_22K                ((uint32_t)22050)
 225 #define I2S_AUDIOFREQ_16K                ((uint32_t)16000)
 226 #define I2S_AUDIOFREQ_11K                ((uint32_t)11025)
 227 #define I2S_AUDIOFREQ_8K                 ((uint32_t)8000)
 228 #define I2S_AUDIOFREQ_DEFAULT            ((uint32_t)2)
 229 /**
 230   * @}
 231   */
 232
 233 /** @defgroup I2S_Clock_Polarity I2S Clock Polarity
 234   * @{
 235   */
 236 #define I2S_CPOL_LOW                    ((uint32_t)0x00000000)
 237 #define I2S_CPOL_HIGH                   ((uint32_t)SPI_I2SCFGR_CKPOL)
 238 /**
 239   * @}
 240   */
 241
 242 /** @defgroup I2S_Interrupt_configuration_definition I2S Interrupt configuration definition
 243   * @{
 244   */
 245 #define I2S_IT_TXE                      SPI_CR2_TXEIE
 246 #define I2S_IT_RXNE                     SPI_CR2_RXNEIE
 247 #define I2S_IT_ERR                      SPI_CR2_ERRIE
 248 /**
 249   * @}
 250   */
 251
 252 /** @defgroup I2S_Flag_definition I2S Flag definition
 253   * @{
 254   */
 255 #define I2S_FLAG_TXE                    SPI_SR_TXE
 256 #define I2S_FLAG_RXNE                   SPI_SR_RXNE
 257
 258 #define I2S_FLAG_UDR                    SPI_SR_UDR
 259 #define I2S_FLAG_OVR                    SPI_SR_OVR
 260 #define I2S_FLAG_FRE                    SPI_SR_FRE
 261
 262 #define I2S_FLAG_CHSIDE                 SPI_SR_CHSIDE
 263 #define I2S_FLAG_BSY                    SPI_SR_BSY
 264 /**
 265   * @}
 266   */
 267
 268 /**
 269   * @}
 270   */
 271
 272 /* Exported macro ------------------------------------------------------------*/
 273 /** @defgroup I2S_Exported_macros I2S Exported Macros
 274   * @{
 275   */
 276
 277 /** @brief  Reset I2S handle state
 278   * @param  __HANDLE__: specifies the I2S Handle.
 279   * @retval None
 280   */
 281 #define __HAL_I2S_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_I2S_STATE_RESET)
 282
 283 /** @brief  Enable the specified SPI peripheral (in I2S mode).
 284   * @param  __HANDLE__: specifies the I2S Handle.
 285   * @retval None
 286   */
 287 #define __HAL_I2S_ENABLE(__HANDLE__)    (SET_BIT((__HANDLE__)->Instance->I2SCFGR, SPI_I2SCFGR_I2SE))
 288
 289 /** @brief  Disable the specified SPI peripheral (in I2S mode).
 290   * @param  __HANDLE__: specifies the I2S Handle.
 291   * @retval None
 292   */
 293 #define __HAL_I2S_DISABLE(__HANDLE__) (CLEAR_BIT((__HANDLE__)->Instance->I2SCFGR, SPI_I2SCFGR_I2SE))
 294
 295 /** @brief  Enable the specified I2S interrupts.
 296   * @param  __HANDLE__: specifies the I2S Handle.
 297   * @param  __INTERRUPT__: specifies the interrupt source to enable or disable.
 298   *         This parameter can be one of the following values:
 299   *            @arg I2S_IT_TXE: Tx buffer empty interrupt enable
 300   *            @arg I2S_IT_RXNE: RX buffer not empty interrupt enable
 301   *            @arg I2S_IT_ERR: Error interrupt enable
 302   * @retval None
 303   */
 304 #define __HAL_I2S_ENABLE_IT(__HANDLE__, __INTERRUPT__)    (SET_BIT((__HANDLE__)->Instance->CR2,(__INTERRUPT__)))
 305
 306 /** @brief  Disable the specified I2S interrupts.
 307   * @param  __HANDLE__: specifies the I2S Handle.
 308   * @param  __INTERRUPT__: specifies the interrupt source to enable or disable.
 309   *         This parameter can be one of the following values:
 310   *            @arg I2S_IT_TXE: Tx buffer empty interrupt enable
 311   *            @arg I2S_IT_RXNE: RX buffer not empty interrupt enable
 312   *            @arg I2S_IT_ERR: Error interrupt enable
 313   * @retval None
 314   */
 315 #define __HAL_I2S_DISABLE_IT(__HANDLE__, __INTERRUPT__) (CLEAR_BIT((__HANDLE__)->Instance->CR2,(__INTERRUPT__)))
 316
 317 /** @brief  Checks if the specified I2S interrupt source is enabled or disabled.
 318   * @param  __HANDLE__: specifies the I2S Handle.
 319   *         This parameter can be I2S where x: 1, 2, or 3 to select the I2S peripheral.
 320   * @param  __INTERRUPT__: specifies the I2S interrupt source to check.
 321   *          This parameter can be one of the following values:
 322   *            @arg I2S_IT_TXE: Tx buffer empty interrupt enable
 323   *            @arg I2S_IT_RXNE: RX buffer not empty interrupt enable
 324   *            @arg I2S_IT_ERR: Error interrupt enable
 325   * @retval The new state of __IT__ (TRUE or FALSE).
 326   */
 327 #define __HAL_I2S_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) ((((__HANDLE__)->Instance->CR2 & (__INTERRUPT__)) == (__INTERRUPT__)) ? SET : RESET)
 328
 329 /** @brief  Checks whether the specified I2S flag is set or not.
 330   * @param  __HANDLE__: specifies the I2S Handle.
 331   * @param  __FLAG__: specifies the flag to check.
 332   *         This parameter can be one of the following values:
 333   *            @arg I2S_FLAG_RXNE: Receive buffer not empty flag
 334   *            @arg I2S_FLAG_TXE: Transmit buffer empty flag
 335   *            @arg I2S_FLAG_UDR: Underrun flag
 336   *            @arg I2S_FLAG_OVR: Overrun flag
 337   *            @arg I2S_FLAG_CHSIDE: Channel Side flag
 338   *            @arg I2S_FLAG_BSY: Busy flag
 339   * @retval The new state of __FLAG__ (TRUE or FALSE).
 340   */
 341 #define __HAL_I2S_GET_FLAG(__HANDLE__, __FLAG__) ((((__HANDLE__)->Instance->SR) & (__FLAG__)) == (__FLAG__))
 342
 343 /** @brief Clears the I2S OVR pending flag.
 344   * @param  __HANDLE__: specifies the I2S Handle.
 345   * @retval None
 346   */
 347 #define __HAL_I2S_CLEAR_OVRFLAG(__HANDLE__) do{__IO uint32_t tmpreg = (__HANDLE__)->Instance->DR;\
 348                                                              tmpreg = (__HANDLE__)->Instance->SR;\
 349                                                              UNUSED(tmpreg);\
 350                                               }while(0)
 351 /** @brief Clears the I2S UDR pending flag.
 352   * @param  __HANDLE__: specifies the I2S Handle.
 353   * @retval None
 354   */
 355 #define __HAL_I2S_CLEAR_UDRFLAG(__HANDLE__)((__HANDLE__)->Instance->SR)
 356 /**
 357   * @}
 358   */
 359
 360 /* Exported functions --------------------------------------------------------*/
 361 /** @addtogroup I2S_Exported_Functions
 362   * @{
 363   */
 364
 365 /** @addtogroup I2S_Exported_Functions_Group1
 366   * @{
 367   */
 368 /* Initialization/de-initialization functions  ********************************/
 369 HAL_StatusTypeDef HAL_I2S_Init(I2S_HandleTypeDef *hi2s);
 370 HAL_StatusTypeDef HAL_I2S_DeInit (I2S_HandleTypeDef *hi2s);
 371 void HAL_I2S_MspInit(I2S_HandleTypeDef *hi2s);
 372 void HAL_I2S_MspDeInit(I2S_HandleTypeDef *hi2s);
 373 /**
 374   * @}
 375   */
 376
 377 /** @addtogroup I2S_Exported_Functions_Group2
 378   * @{
 379   */
 380 /* I/O operation functions  ***************************************************/
 381  /* Blocking mode: Polling */
 382 HAL_StatusTypeDef HAL_I2S_Transmit(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size, uint32_t Timeout);
 383 HAL_StatusTypeDef HAL_I2S_Receive(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size, uint32_t Timeout);
 384
 385  /* Non-Blocking mode: Interrupt */
 386 HAL_StatusTypeDef HAL_I2S_Transmit_IT(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
 387 HAL_StatusTypeDef HAL_I2S_Receive_IT(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
 388 void HAL_I2S_IRQHandler(I2S_HandleTypeDef *hi2s);
 389
 390 /* Non-Blocking mode: DMA */
 391 HAL_StatusTypeDef HAL_I2S_Transmit_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
 392 HAL_StatusTypeDef HAL_I2S_Receive_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
 393
 394 HAL_StatusTypeDef HAL_I2S_DMAPause(I2S_HandleTypeDef *hi2s);
 395 HAL_StatusTypeDef HAL_I2S_DMAResume(I2S_HandleTypeDef *hi2s);
 396 HAL_StatusTypeDef HAL_I2S_DMAStop(I2S_HandleTypeDef *hi2s);
 397
 398 /* Callbacks used in non blocking modes (Interrupt and DMA) *******************/
 399 void HAL_I2S_TxHalfCpltCallback(I2S_HandleTypeDef *hi2s);
 400 void HAL_I2S_TxCpltCallback(I2S_HandleTypeDef *hi2s);
 401 void HAL_I2S_RxHalfCpltCallback(I2S_HandleTypeDef *hi2s);
 402 void HAL_I2S_RxCpltCallback(I2S_HandleTypeDef *hi2s);
 403 void HAL_I2S_ErrorCallback(I2S_HandleTypeDef *hi2s);
 404 /**
 405   * @}
 406   */
 407
 408 /** @addtogroup I2S_Exported_Functions_Group3
 409   * @{
 410   */
 411 /* Peripheral Control and State functions  ************************************/
 412 HAL_I2S_StateTypeDef HAL_I2S_GetState(I2S_HandleTypeDef *hi2s);
 413 uint32_t HAL_I2S_GetError(I2S_HandleTypeDef *hi2s);
 414 /**
 415   * @}
 416   */
 417
 418 /**
 419   * @}
 420   */
 421
 422 /* Private macros ------------------------------------------------------------*/
 423 /** @defgroup I2S_Private_Macros I2S Private Macros
 424   * @{
 425   */
 426 #define IS_I2S_MODE(MODE) (((MODE) == I2S_MODE_SLAVE_TX)  || \
 427                            ((MODE) == I2S_MODE_SLAVE_RX)  || \
 428                            ((MODE) == I2S_MODE_MASTER_TX) || \
 429                            ((MODE) == I2S_MODE_MASTER_RX))
 430
 431 #define IS_I2S_STANDARD(STANDARD) (((STANDARD) == I2S_STANDARD_PHILIPS)   || \
 432                                    ((STANDARD) == I2S_STANDARD_MSB)       || \
 433                                    ((STANDARD) == I2S_STANDARD_LSB)       || \
 434                                    ((STANDARD) == I2S_STANDARD_PCM_SHORT) || \
 435                                    ((STANDARD) == I2S_STANDARD_PCM_LONG))
 436
 437 #define IS_I2S_DATA_FORMAT(FORMAT) (((FORMAT) == I2S_DATAFORMAT_16B)          || \
 438                                     ((FORMAT) == I2S_DATAFORMAT_16B_EXTENDED) || \
 439                                     ((FORMAT) == I2S_DATAFORMAT_24B)          || \
 440                                     ((FORMAT) == I2S_DATAFORMAT_32B))
 441
 442 #define IS_I2S_MCLK_OUTPUT(OUTPUT) (((OUTPUT) == I2S_MCLKOUTPUT_ENABLE) || \
 443                                     ((OUTPUT) == I2S_MCLKOUTPUT_DISABLE))
 444
 445 #define IS_I2S_AUDIO_FREQ(FREQ) ((((FREQ) >= I2S_AUDIOFREQ_8K)    && \
 446                                   ((FREQ) <= I2S_AUDIOFREQ_192K)) || \
 447                                   ((FREQ) == I2S_AUDIOFREQ_DEFAULT))
 448
 449 #define IS_I2S_CPOL(CPOL) (((CPOL) == I2S_CPOL_LOW) || \
 450                            ((CPOL) == I2S_CPOL_HIGH))
 451 /**
 452   * @}
 453   */
 454
 455 /* Private Fonctions ---------------------------------------------------------*/
 456 /** @defgroup I2S_Private_Functions I2S Private Functions
 457   * @{
 458   */
 459 /* Private functions are defined in stm32f1xx_hal_i2s.c file */
 460 /**
 461   * @}
 462   */
 463
 464 /**
 465   * @}
 466   */
 467
 468 /**
 469   * @}
 470   */
 471 #ifdef __cplusplus
 472 }
 473 #endif
 474
 475 #endif /* !STM32L031xx && !STM32L041xx */
 476
 477 #endif /* __STM32L0xx_HAL_I2S_H */
 478
 479 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/