1 /** 2 ****************************************************************************** 3 * @file stm32l1xx_hal_i2s.h 4 * @author MCD Application Team 5 * @brief Header file of I2S HAL module. 6 ****************************************************************************** 7 * @attention 8 * 9 * Copyright (c) 2016 STMicroelectronics. 10 * All rights reserved. 11 * 12 * This software is licensed under terms that can be found in the LICENSE file 13 * in the root directory of this software component. 14 * If no LICENSE file comes with this software, it is provided AS-IS. 15 * 16 ****************************************************************************** 17 */ 18 19 /* Define to prevent recursive inclusion -------------------------------------*/ 20 #ifndef STM32L1xx_HAL_I2S_H 21 #define STM32L1xx_HAL_I2S_H 22 23 #ifdef __cplusplus 24 extern "C" { 25 #endif 26 27 /* Includes ------------------------------------------------------------------*/ 28 #include "stm32l1xx_hal_def.h" 29 30 #if defined(SPI_I2S_SUPPORT) 31 /** @addtogroup STM32L1xx_HAL_Driver 32 * @{ 33 */ 34 35 /** @addtogroup I2S 36 * @{ 37 */ 38 39 /* Exported types ------------------------------------------------------------*/ 40 /** @defgroup I2S_Exported_Types I2S Exported Types 41 * @{ 42 */ 43 44 /** 45 * @brief I2S Init structure definition 46 */ 47 typedef struct 48 { 49 uint32_t Mode; /*!< Specifies the I2S operating mode. 50 This parameter can be a value of @ref I2S_Mode */ 51 52 uint32_t Standard; /*!< Specifies the standard used for the I2S communication. 53 This parameter can be a value of @ref I2S_Standard */ 54 55 uint32_t DataFormat; /*!< Specifies the data format for the I2S communication. 56 This parameter can be a value of @ref I2S_Data_Format */ 57 58 uint32_t MCLKOutput; /*!< Specifies whether the I2S MCLK output is enabled or not. 59 This parameter can be a value of @ref I2S_MCLK_Output */ 60 61 uint32_t AudioFreq; /*!< Specifies the frequency selected for the I2S communication. 62 This parameter can be a value of @ref I2S_Audio_Frequency */ 63 64 uint32_t CPOL; /*!< Specifies the idle state of the I2S clock. 65 This parameter can be a value of @ref I2S_Clock_Polarity */ 66 } I2S_InitTypeDef; 67 68 /** 69 * @brief HAL State structures definition 70 */ 71 typedef enum 72 { 73 HAL_I2S_STATE_RESET = 0x00U, /*!< I2S not yet initialized or disabled */ 74 HAL_I2S_STATE_READY = 0x01U, /*!< I2S initialized and ready for use */ 75 HAL_I2S_STATE_BUSY = 0x02U, /*!< I2S internal process is ongoing */ 76 HAL_I2S_STATE_BUSY_TX = 0x03U, /*!< Data Transmission process is ongoing */ 77 HAL_I2S_STATE_BUSY_RX = 0x04U, /*!< Data Reception process is ongoing */ 78 HAL_I2S_STATE_TIMEOUT = 0x06U, /*!< I2S timeout state */ 79 HAL_I2S_STATE_ERROR = 0x07U /*!< I2S error state */ 80 } HAL_I2S_StateTypeDef; 81 82 /** 83 * @brief I2S handle Structure definition 84 */ 85 #if (USE_HAL_I2S_REGISTER_CALLBACKS == 1) 86 typedef struct __I2S_HandleTypeDef 87 #else 88 typedef struct 89 #endif /* USE_HAL_I2S_REGISTER_CALLBACKS */ 90 { 91 SPI_TypeDef *Instance; /*!< I2S registers base address */ 92 93 I2S_InitTypeDef Init; /*!< I2S communication parameters */ 94 95 uint16_t *pTxBuffPtr; /*!< Pointer to I2S Tx transfer buffer */ 96 97 __IO uint16_t TxXferSize; /*!< I2S Tx transfer size */ 98 99 __IO uint16_t TxXferCount; /*!< I2S Tx transfer Counter */ 100 101 uint16_t *pRxBuffPtr; /*!< Pointer to I2S Rx transfer buffer */ 102 103 __IO uint16_t RxXferSize; /*!< I2S Rx transfer size */ 104 105 __IO uint16_t RxXferCount; /*!< I2S Rx transfer counter 106 (This field is initialized at the 107 same value as transfer size at the 108 beginning of the transfer and 109 decremented when a sample is received 110 NbSamplesReceived = RxBufferSize-RxBufferCount) */ 111 DMA_HandleTypeDef *hdmatx; /*!< I2S Tx DMA handle parameters */ 112 113 DMA_HandleTypeDef *hdmarx; /*!< I2S Rx DMA handle parameters */ 114 115 __IO HAL_LockTypeDef Lock; /*!< I2S locking object */ 116 117 __IO HAL_I2S_StateTypeDef State; /*!< I2S communication state */ 118 119 __IO uint32_t ErrorCode; /*!< I2S Error code 120 This parameter can be a value of @ref I2S_Error */ 121 122 #if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U) 123 void (* TxCpltCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Tx Completed callback */ 124 void (* RxCpltCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Rx Completed callback */ 125 void (* TxHalfCpltCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Tx Half Completed callback */ 126 void (* RxHalfCpltCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Rx Half Completed callback */ 127 void (* ErrorCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Error callback */ 128 void (* MspInitCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Msp Init callback */ 129 void (* MspDeInitCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Msp DeInit callback */ 130 131 #endif /* USE_HAL_I2S_REGISTER_CALLBACKS */ 132 } I2S_HandleTypeDef; 133 134 #if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U) 135 /** 136 * @brief HAL I2S Callback ID enumeration definition 137 */ 138 typedef enum 139 { 140 HAL_I2S_TX_COMPLETE_CB_ID = 0x00U, /*!< I2S Tx Completed callback ID */ 141 HAL_I2S_RX_COMPLETE_CB_ID = 0x01U, /*!< I2S Rx Completed callback ID */ 142 HAL_I2S_TX_HALF_COMPLETE_CB_ID = 0x03U, /*!< I2S Tx Half Completed callback ID */ 143 HAL_I2S_RX_HALF_COMPLETE_CB_ID = 0x04U, /*!< I2S Rx Half Completed callback ID */ 144 HAL_I2S_ERROR_CB_ID = 0x06U, /*!< I2S Error callback ID */ 145 HAL_I2S_MSPINIT_CB_ID = 0x07U, /*!< I2S Msp Init callback ID */ 146 HAL_I2S_MSPDEINIT_CB_ID = 0x08U /*!< I2S Msp DeInit callback ID */ 147 148 } HAL_I2S_CallbackIDTypeDef; 149 150 /** 151 * @brief HAL I2S Callback pointer definition 152 */ 153 typedef void (*pI2S_CallbackTypeDef)(I2S_HandleTypeDef *hi2s); /*!< pointer to an I2S callback function */ 154 155 #endif /* USE_HAL_I2S_REGISTER_CALLBACKS */ 156 /** 157 * @} 158 */ 159 160 /* Exported constants --------------------------------------------------------*/ 161 /** @defgroup I2S_Exported_Constants I2S Exported Constants 162 * @{ 163 */ 164 /** @defgroup I2S_Error I2S Error 165 * @{ 166 */ 167 #define HAL_I2S_ERROR_NONE (0x00000000U) /*!< No error */ 168 #define HAL_I2S_ERROR_TIMEOUT (0x00000001U) /*!< Timeout error */ 169 #define HAL_I2S_ERROR_OVR (0x00000002U) /*!< OVR error */ 170 #define HAL_I2S_ERROR_UDR (0x00000004U) /*!< UDR error */ 171 #define HAL_I2S_ERROR_DMA (0x00000008U) /*!< DMA transfer error */ 172 #define HAL_I2S_ERROR_PRESCALER (0x00000010U) /*!< Prescaler Calculation error */ 173 #if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U) 174 #define HAL_I2S_ERROR_INVALID_CALLBACK (0x00000020U) /*!< Invalid Callback error */ 175 #endif /* USE_HAL_I2S_REGISTER_CALLBACKS */ 176 #define HAL_I2S_ERROR_BUSY_LINE_RX (0x00000040U) /*!< Busy Rx Line error */ 177 /** 178 * @} 179 */ 180 181 /** @defgroup I2S_Mode I2S Mode 182 * @{ 183 */ 184 #define I2S_MODE_SLAVE_TX (0x00000000U) 185 #define I2S_MODE_SLAVE_RX (SPI_I2SCFGR_I2SCFG_0) 186 #define I2S_MODE_MASTER_TX (SPI_I2SCFGR_I2SCFG_1) 187 #define I2S_MODE_MASTER_RX ((SPI_I2SCFGR_I2SCFG_0 | SPI_I2SCFGR_I2SCFG_1)) 188 /** 189 * @} 190 */ 191 192 /** @defgroup I2S_Standard I2S Standard 193 * @{ 194 */ 195 #define I2S_STANDARD_PHILIPS (0x00000000U) 196 #define I2S_STANDARD_MSB (SPI_I2SCFGR_I2SSTD_0) 197 #define I2S_STANDARD_LSB (SPI_I2SCFGR_I2SSTD_1) 198 #define I2S_STANDARD_PCM_SHORT ((SPI_I2SCFGR_I2SSTD_0 | SPI_I2SCFGR_I2SSTD_1)) 199 #define I2S_STANDARD_PCM_LONG ((SPI_I2SCFGR_I2SSTD_0 | SPI_I2SCFGR_I2SSTD_1 | SPI_I2SCFGR_PCMSYNC)) 200 /** 201 * @} 202 */ 203 204 /** @defgroup I2S_Data_Format I2S Data Format 205 * @{ 206 */ 207 #define I2S_DATAFORMAT_16B (0x00000000U) 208 #define I2S_DATAFORMAT_16B_EXTENDED (SPI_I2SCFGR_CHLEN) 209 #define I2S_DATAFORMAT_24B ((SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN_0)) 210 #define I2S_DATAFORMAT_32B ((SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN_1)) 211 /** 212 * @} 213 */ 214 215 /** @defgroup I2S_MCLK_Output I2S MCLK Output 216 * @{ 217 */ 218 #define I2S_MCLKOUTPUT_ENABLE (SPI_I2SPR_MCKOE) 219 #define I2S_MCLKOUTPUT_DISABLE (0x00000000U) 220 /** 221 * @} 222 */ 223 224 /** @defgroup I2S_Audio_Frequency I2S Audio Frequency 225 * @{ 226 */ 227 #define I2S_AUDIOFREQ_192K (192000U) 228 #define I2S_AUDIOFREQ_96K (96000U) 229 #define I2S_AUDIOFREQ_48K (48000U) 230 #define I2S_AUDIOFREQ_44K (44100U) 231 #define I2S_AUDIOFREQ_32K (32000U) 232 #define I2S_AUDIOFREQ_22K (22050U) 233 #define I2S_AUDIOFREQ_16K (16000U) 234 #define I2S_AUDIOFREQ_11K (11025U) 235 #define I2S_AUDIOFREQ_8K (8000U) 236 #define I2S_AUDIOFREQ_DEFAULT (2U) 237 /** 238 * @} 239 */ 240 241 /** @defgroup I2S_Clock_Polarity I2S Clock Polarity 242 * @{ 243 */ 244 #define I2S_CPOL_LOW (0x00000000U) 245 #define I2S_CPOL_HIGH (SPI_I2SCFGR_CKPOL) 246 /** 247 * @} 248 */ 249 250 /** @defgroup I2S_Interrupts_Definition I2S Interrupts Definition 251 * @{ 252 */ 253 #define I2S_IT_TXE SPI_CR2_TXEIE 254 #define I2S_IT_RXNE SPI_CR2_RXNEIE 255 #define I2S_IT_ERR SPI_CR2_ERRIE 256 /** 257 * @} 258 */ 259 260 /** @defgroup I2S_Flags_Definition I2S Flags Definition 261 * @{ 262 */ 263 #define I2S_FLAG_TXE SPI_SR_TXE 264 #define I2S_FLAG_RXNE SPI_SR_RXNE 265 266 #define I2S_FLAG_UDR SPI_SR_UDR 267 #define I2S_FLAG_OVR SPI_SR_OVR 268 #define I2S_FLAG_FRE SPI_SR_FRE 269 270 #define I2S_FLAG_CHSIDE SPI_SR_CHSIDE 271 #define I2S_FLAG_BSY SPI_SR_BSY 272 273 #if defined(SPI_CR2_FRF) 274 #define I2S_FLAG_MASK (SPI_SR_RXNE\ 275 | SPI_SR_TXE | SPI_SR_UDR | SPI_SR_OVR | SPI_SR_FRE | SPI_SR_CHSIDE | SPI_SR_BSY) 276 #else 277 #define I2S_FLAG_MASK (SPI_SR_RXNE\ 278 | SPI_SR_TXE | SPI_SR_UDR | SPI_SR_OVR | SPI_SR_CHSIDE | SPI_SR_BSY) 279 #endif 280 /** 281 * @} 282 */ 283 284 /** 285 * @} 286 */ 287 288 /* Exported macros -----------------------------------------------------------*/ 289 /** @defgroup I2S_Exported_macros I2S Exported Macros 290 * @{ 291 */ 292 293 /** @brief Reset I2S handle state 294 * @param __HANDLE__ specifies the I2S Handle. 295 * @retval None 296 */ 297 #if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U) 298 #define __HAL_I2S_RESET_HANDLE_STATE(__HANDLE__) do{ \ 299 (__HANDLE__)->State = HAL_I2S_STATE_RESET; \ 300 (__HANDLE__)->MspInitCallback = NULL; \ 301 (__HANDLE__)->MspDeInitCallback = NULL; \ 302 } while(0) 303 #else 304 #define __HAL_I2S_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_I2S_STATE_RESET) 305 #endif /* USE_HAL_I2S_REGISTER_CALLBACKS */ 306 307 /** @brief Enable the specified SPI peripheral (in I2S mode). 308 * @param __HANDLE__ specifies the I2S Handle. 309 * @retval None 310 */ 311 #define __HAL_I2S_ENABLE(__HANDLE__) (SET_BIT((__HANDLE__)->Instance->I2SCFGR, SPI_I2SCFGR_I2SE)) 312 313 /** @brief Disable the specified SPI peripheral (in I2S mode). 314 * @param __HANDLE__ specifies the I2S Handle. 315 * @retval None 316 */ 317 #define __HAL_I2S_DISABLE(__HANDLE__) (CLEAR_BIT((__HANDLE__)->Instance->I2SCFGR, SPI_I2SCFGR_I2SE)) 318 319 /** @brief Enable the specified I2S interrupts. 320 * @param __HANDLE__ specifies the I2S Handle. 321 * @param __INTERRUPT__ specifies the interrupt source to enable or disable. 322 * This parameter can be one of the following values: 323 * @arg I2S_IT_TXE: Tx buffer empty interrupt enable 324 * @arg I2S_IT_RXNE: RX buffer not empty interrupt enable 325 * @arg I2S_IT_ERR: Error interrupt enable 326 * @retval None 327 */ 328 #define __HAL_I2S_ENABLE_IT(__HANDLE__, __INTERRUPT__) (SET_BIT((__HANDLE__)->Instance->CR2,(__INTERRUPT__))) 329 330 /** @brief Disable the specified I2S interrupts. 331 * @param __HANDLE__ specifies the I2S Handle. 332 * @param __INTERRUPT__ specifies the interrupt source to enable or disable. 333 * This parameter can be one of the following values: 334 * @arg I2S_IT_TXE: Tx buffer empty interrupt enable 335 * @arg I2S_IT_RXNE: RX buffer not empty interrupt enable 336 * @arg I2S_IT_ERR: Error interrupt enable 337 * @retval None 338 */ 339 #define __HAL_I2S_DISABLE_IT(__HANDLE__, __INTERRUPT__) (CLEAR_BIT((__HANDLE__)->Instance->CR2,(__INTERRUPT__))) 340 341 /** @brief Checks if the specified I2S interrupt source is enabled or disabled. 342 * @param __HANDLE__ specifies the I2S Handle. 343 * This parameter can be I2S where x: 1, 2, or 3 to select the I2S peripheral. 344 * @param __INTERRUPT__ specifies the I2S interrupt source to check. 345 * This parameter can be one of the following values: 346 * @arg I2S_IT_TXE: Tx buffer empty interrupt enable 347 * @arg I2S_IT_RXNE: RX buffer not empty interrupt enable 348 * @arg I2S_IT_ERR: Error interrupt enable 349 * @retval The new state of __IT__ (TRUE or FALSE). 350 */ 351 #define __HAL_I2S_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) ((((__HANDLE__)->Instance->CR2\ 352 & (__INTERRUPT__)) == (__INTERRUPT__)) ? SET : RESET) 353 354 /** @brief Checks whether the specified I2S flag is set or not. 355 * @param __HANDLE__ specifies the I2S Handle. 356 * @param __FLAG__ specifies the flag to check. 357 * This parameter can be one of the following values: 358 * @arg I2S_FLAG_RXNE: Receive buffer not empty flag 359 * @arg I2S_FLAG_TXE: Transmit buffer empty flag 360 * @arg I2S_FLAG_UDR: Underrun flag 361 * @arg I2S_FLAG_OVR: Overrun flag 362 * @arg I2S_FLAG_FRE: Frame error flag 363 * @arg I2S_FLAG_CHSIDE: Channel Side flag 364 * @arg I2S_FLAG_BSY: Busy flag 365 * @retval The new state of __FLAG__ (TRUE or FALSE). 366 */ 367 #define __HAL_I2S_GET_FLAG(__HANDLE__, __FLAG__) ((((__HANDLE__)->Instance->SR) & (__FLAG__)) == (__FLAG__)) 368 369 /** @brief Clears the I2S OVR pending flag. 370 * @param __HANDLE__ specifies the I2S Handle. 371 * @retval None 372 */ 373 #define __HAL_I2S_CLEAR_OVRFLAG(__HANDLE__) do{ \ 374 __IO uint32_t tmpreg_ovr = 0x00U; \ 375 tmpreg_ovr = (__HANDLE__)->Instance->DR; \ 376 tmpreg_ovr = (__HANDLE__)->Instance->SR; \ 377 UNUSED(tmpreg_ovr); \ 378 }while(0U) 379 /** @brief Clears the I2S UDR pending flag. 380 * @param __HANDLE__ specifies the I2S Handle. 381 * @retval None 382 */ 383 #define __HAL_I2S_CLEAR_UDRFLAG(__HANDLE__) do{\ 384 __IO uint32_t tmpreg_udr = 0x00U;\ 385 tmpreg_udr = ((__HANDLE__)->Instance->SR);\ 386 UNUSED(tmpreg_udr); \ 387 }while(0U) 388 /** @brief Flush the I2S DR Register. 389 * @param __HANDLE__ specifies the I2S Handle. 390 * @retval None 391 */ 392 #define __HAL_I2S_FLUSH_RX_DR(__HANDLE__) do{\ 393 __IO uint32_t tmpreg_dr = 0x00U;\ 394 tmpreg_dr = ((__HANDLE__)->Instance->DR);\ 395 UNUSED(tmpreg_dr); \ 396 }while(0U) 397 /** 398 * @} 399 */ 400 401 /* Exported functions --------------------------------------------------------*/ 402 /** @addtogroup I2S_Exported_Functions 403 * @{ 404 */ 405 406 /** @addtogroup I2S_Exported_Functions_Group1 407 * @{ 408 */ 409 /* Initialization/de-initialization functions ********************************/ 410 HAL_StatusTypeDef HAL_I2S_Init(I2S_HandleTypeDef *hi2s); 411 HAL_StatusTypeDef HAL_I2S_DeInit(I2S_HandleTypeDef *hi2s); 412 void HAL_I2S_MspInit(I2S_HandleTypeDef *hi2s); 413 void HAL_I2S_MspDeInit(I2S_HandleTypeDef *hi2s); 414 415 /* Callbacks Register/UnRegister functions ***********************************/ 416 #if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U) 417 HAL_StatusTypeDef HAL_I2S_RegisterCallback(I2S_HandleTypeDef *hi2s, HAL_I2S_CallbackIDTypeDef CallbackID, 418 pI2S_CallbackTypeDef pCallback); 419 HAL_StatusTypeDef HAL_I2S_UnRegisterCallback(I2S_HandleTypeDef *hi2s, HAL_I2S_CallbackIDTypeDef CallbackID); 420 #endif /* USE_HAL_I2S_REGISTER_CALLBACKS */ 421 /** 422 * @} 423 */ 424 425 /** @addtogroup I2S_Exported_Functions_Group2 426 * @{ 427 */ 428 /* I/O operation functions ***************************************************/ 429 /* Blocking mode: Polling */ 430 HAL_StatusTypeDef HAL_I2S_Transmit(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size, uint32_t Timeout); 431 HAL_StatusTypeDef HAL_I2S_Receive(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size, uint32_t Timeout); 432 433 /* Non-Blocking mode: Interrupt */ 434 HAL_StatusTypeDef HAL_I2S_Transmit_IT(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size); 435 HAL_StatusTypeDef HAL_I2S_Receive_IT(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size); 436 void HAL_I2S_IRQHandler(I2S_HandleTypeDef *hi2s); 437 438 /* Non-Blocking mode: DMA */ 439 HAL_StatusTypeDef HAL_I2S_Transmit_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size); 440 HAL_StatusTypeDef HAL_I2S_Receive_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size); 441 442 HAL_StatusTypeDef HAL_I2S_DMAPause(I2S_HandleTypeDef *hi2s); 443 HAL_StatusTypeDef HAL_I2S_DMAResume(I2S_HandleTypeDef *hi2s); 444 HAL_StatusTypeDef HAL_I2S_DMAStop(I2S_HandleTypeDef *hi2s); 445 446 /* Callbacks used in non blocking modes (Interrupt and DMA) *******************/ 447 void HAL_I2S_TxHalfCpltCallback(I2S_HandleTypeDef *hi2s); 448 void HAL_I2S_TxCpltCallback(I2S_HandleTypeDef *hi2s); 449 void HAL_I2S_RxHalfCpltCallback(I2S_HandleTypeDef *hi2s); 450 void HAL_I2S_RxCpltCallback(I2S_HandleTypeDef *hi2s); 451 void HAL_I2S_ErrorCallback(I2S_HandleTypeDef *hi2s); 452 /** 453 * @} 454 */ 455 456 /** @addtogroup I2S_Exported_Functions_Group3 457 * @{ 458 */ 459 /* Peripheral Control and State functions ************************************/ 460 HAL_I2S_StateTypeDef HAL_I2S_GetState(I2S_HandleTypeDef *hi2s); 461 uint32_t HAL_I2S_GetError(I2S_HandleTypeDef *hi2s); 462 /** 463 * @} 464 */ 465 466 /** 467 * @} 468 */ 469 470 /* Private types -------------------------------------------------------------*/ 471 /* Private variables ---------------------------------------------------------*/ 472 /* Private constants ---------------------------------------------------------*/ 473 /* Private macros ------------------------------------------------------------*/ 474 /** @defgroup I2S_Private_Macros I2S Private Macros 475 * @{ 476 */ 477 478 /** @brief Check whether the specified SPI flag is set or not. 479 * @param __SR__ copy of I2S SR register. 480 * @param __FLAG__ specifies the flag to check. 481 * This parameter can be one of the following values: 482 * @arg I2S_FLAG_RXNE: Receive buffer not empty flag 483 * @arg I2S_FLAG_TXE: Transmit buffer empty flag 484 * @arg I2S_FLAG_UDR: Underrun error flag 485 * @arg I2S_FLAG_OVR: Overrun flag 486 * @arg I2S_FLAG_CHSIDE: Channel side flag 487 * @arg I2S_FLAG_BSY: Busy flag 488 * @retval SET or RESET. 489 */ 490 #define I2S_CHECK_FLAG(__SR__, __FLAG__) ((((__SR__)\ 491 & ((__FLAG__) & I2S_FLAG_MASK)) == ((__FLAG__) & I2S_FLAG_MASK)) ? SET : RESET) 492 493 /** @brief Check whether the specified SPI Interrupt is set or not. 494 * @param __CR2__ copy of I2S CR2 register. 495 * @param __INTERRUPT__ specifies the SPI interrupt source to check. 496 * This parameter can be one of the following values: 497 * @arg I2S_IT_TXE: Tx buffer empty interrupt enable 498 * @arg I2S_IT_RXNE: RX buffer not empty interrupt enable 499 * @arg I2S_IT_ERR: Error interrupt enable 500 * @retval SET or RESET. 501 */ 502 #define I2S_CHECK_IT_SOURCE(__CR2__, __INTERRUPT__) ((((__CR2__)\ 503 & (__INTERRUPT__)) == (__INTERRUPT__)) ? SET : RESET) 504 505 /** @brief Checks if I2S Mode parameter is in allowed range. 506 * @param __MODE__ specifies the I2S Mode. 507 * This parameter can be a value of @ref I2S_Mode 508 * @retval None 509 */ 510 #define IS_I2S_MODE(__MODE__) (((__MODE__) == I2S_MODE_SLAVE_TX) || \ 511 ((__MODE__) == I2S_MODE_SLAVE_RX) || \ 512 ((__MODE__) == I2S_MODE_MASTER_TX) || \ 513 ((__MODE__) == I2S_MODE_MASTER_RX)) 514 515 #define IS_I2S_STANDARD(__STANDARD__) (((__STANDARD__) == I2S_STANDARD_PHILIPS) || \ 516 ((__STANDARD__) == I2S_STANDARD_MSB) || \ 517 ((__STANDARD__) == I2S_STANDARD_LSB) || \ 518 ((__STANDARD__) == I2S_STANDARD_PCM_SHORT) || \ 519 ((__STANDARD__) == I2S_STANDARD_PCM_LONG)) 520 521 #define IS_I2S_DATA_FORMAT(__FORMAT__) (((__FORMAT__) == I2S_DATAFORMAT_16B) || \ 522 ((__FORMAT__) == I2S_DATAFORMAT_16B_EXTENDED) || \ 523 ((__FORMAT__) == I2S_DATAFORMAT_24B) || \ 524 ((__FORMAT__) == I2S_DATAFORMAT_32B)) 525 526 #define IS_I2S_MCLK_OUTPUT(__OUTPUT__) (((__OUTPUT__) == I2S_MCLKOUTPUT_ENABLE) || \ 527 ((__OUTPUT__) == I2S_MCLKOUTPUT_DISABLE)) 528 529 #define IS_I2S_AUDIO_FREQ(__FREQ__) ((((__FREQ__) >= I2S_AUDIOFREQ_8K) && \ 530 ((__FREQ__) <= I2S_AUDIOFREQ_192K)) || \ 531 ((__FREQ__) == I2S_AUDIOFREQ_DEFAULT)) 532 533 /** @brief Checks if I2S Serial clock steady state parameter is in allowed range. 534 * @param __CPOL__ specifies the I2S serial clock steady state. 535 * This parameter can be a value of @ref I2S_Clock_Polarity 536 * @retval None 537 */ 538 #define IS_I2S_CPOL(__CPOL__) (((__CPOL__) == I2S_CPOL_LOW) || \ 539 ((__CPOL__) == I2S_CPOL_HIGH)) 540 541 /** 542 * @} 543 */ 544 545 /** 546 * @} 547 */ 548 549 /** 550 * @} 551 */ 552 #endif /* SPI_I2S_SUPPORT */ 553 554 #ifdef __cplusplus 555 } 556 #endif 557 558 #endif /* STM32L1xx_HAL_I2S_H */ 559 560
