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|
/**
******************************************************************************
* @file stm32f0xx_hal_i2s.h
* @author MCD Application Team
* @brief Header file of I2S HAL module.
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2016 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef STM32F0xx_HAL_I2S_H
#define STM32F0xx_HAL_I2S_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_hal_def.h"
#if defined(SPI_I2S_SUPPORT)
/** @addtogroup STM32F0xx_HAL_Driver
* @{
*/
/** @addtogroup I2S
* @{
*/
/* Exported types ------------------------------------------------------------*/
/** @defgroup I2S_Exported_Types I2S Exported Types
* @{
*/
/**
* @brief I2S Init structure definition
*/
typedef struct
{
uint32_t Mode; /*!< Specifies the I2S operating mode.
This parameter can be a value of @ref I2S_Mode */
uint32_t Standard; /*!< Specifies the standard used for the I2S communication.
This parameter can be a value of @ref I2S_Standard */
uint32_t DataFormat; /*!< Specifies the data format for the I2S communication.
This parameter can be a value of @ref I2S_Data_Format */
uint32_t MCLKOutput; /*!< Specifies whether the I2S MCLK output is enabled or not.
This parameter can be a value of @ref I2S_MCLK_Output */
uint32_t AudioFreq; /*!< Specifies the frequency selected for the I2S communication.
This parameter can be a value of @ref I2S_Audio_Frequency */
uint32_t CPOL; /*!< Specifies the idle state of the I2S clock.
This parameter can be a value of @ref I2S_Clock_Polarity */
} I2S_InitTypeDef;
/**
* @brief HAL State structures definition
*/
typedef enum
{
HAL_I2S_STATE_RESET = 0x00U, /*!< I2S not yet initialized or disabled */
HAL_I2S_STATE_READY = 0x01U, /*!< I2S initialized and ready for use */
HAL_I2S_STATE_BUSY = 0x02U, /*!< I2S internal process is ongoing */
HAL_I2S_STATE_BUSY_TX = 0x03U, /*!< Data Transmission process is ongoing */
HAL_I2S_STATE_BUSY_RX = 0x04U, /*!< Data Reception process is ongoing */
HAL_I2S_STATE_TIMEOUT = 0x06U, /*!< I2S timeout state */
HAL_I2S_STATE_ERROR = 0x07U /*!< I2S error state */
} HAL_I2S_StateTypeDef;
/**
* @brief I2S handle Structure definition
*/
#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1)
typedef struct __I2S_HandleTypeDef
#else
typedef struct
#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
{
SPI_TypeDef *Instance; /*!< I2S registers base address */
I2S_InitTypeDef Init; /*!< I2S communication parameters */
uint16_t *pTxBuffPtr; /*!< Pointer to I2S Tx transfer buffer */
__IO uint16_t TxXferSize; /*!< I2S Tx transfer size */
__IO uint16_t TxXferCount; /*!< I2S Tx transfer Counter */
uint16_t *pRxBuffPtr; /*!< Pointer to I2S Rx transfer buffer */
__IO uint16_t RxXferSize; /*!< I2S Rx transfer size */
__IO uint16_t RxXferCount; /*!< I2S Rx transfer counter
(This field is initialized at the
same value as transfer size at the
beginning of the transfer and
decremented when a sample is received
NbSamplesReceived = RxBufferSize-RxBufferCount) */
DMA_HandleTypeDef *hdmatx; /*!< I2S Tx DMA handle parameters */
DMA_HandleTypeDef *hdmarx; /*!< I2S Rx DMA handle parameters */
__IO HAL_LockTypeDef Lock; /*!< I2S locking object */
__IO HAL_I2S_StateTypeDef State; /*!< I2S communication state */
__IO uint32_t ErrorCode; /*!< I2S Error code
This parameter can be a value of @ref I2S_Error */
#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
void (* TxCpltCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Tx Completed callback */
void (* RxCpltCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Rx Completed callback */
void (* TxHalfCpltCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Tx Half Completed callback */
void (* RxHalfCpltCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Rx Half Completed callback */
void (* ErrorCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Error callback */
void (* MspInitCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Msp Init callback */
void (* MspDeInitCallback)(struct __I2S_HandleTypeDef *hi2s); /*!< I2S Msp DeInit callback */
#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
} I2S_HandleTypeDef;
#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
/**
* @brief HAL I2S Callback ID enumeration definition
*/
typedef enum
{
HAL_I2S_TX_COMPLETE_CB_ID = 0x00U, /*!< I2S Tx Completed callback ID */
HAL_I2S_RX_COMPLETE_CB_ID = 0x01U, /*!< I2S Rx Completed callback ID */
HAL_I2S_TX_HALF_COMPLETE_CB_ID = 0x03U, /*!< I2S Tx Half Completed callback ID */
HAL_I2S_RX_HALF_COMPLETE_CB_ID = 0x04U, /*!< I2S Rx Half Completed callback ID */
HAL_I2S_ERROR_CB_ID = 0x06U, /*!< I2S Error callback ID */
HAL_I2S_MSPINIT_CB_ID = 0x07U, /*!< I2S Msp Init callback ID */
HAL_I2S_MSPDEINIT_CB_ID = 0x08U /*!< I2S Msp DeInit callback ID */
} HAL_I2S_CallbackIDTypeDef;
/**
* @brief HAL I2S Callback pointer definition
*/
typedef void (*pI2S_CallbackTypeDef)(I2S_HandleTypeDef *hi2s); /*!< pointer to an I2S callback function */
#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
/**
* @}
*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup I2S_Exported_Constants I2S Exported Constants
* @{
*/
/** @defgroup I2S_Error I2S Error
* @{
*/
#define HAL_I2S_ERROR_NONE (0x00000000U) /*!< No error */
#define HAL_I2S_ERROR_TIMEOUT (0x00000001U) /*!< Timeout error */
#define HAL_I2S_ERROR_OVR (0x00000002U) /*!< OVR error */
#define HAL_I2S_ERROR_UDR (0x00000004U) /*!< UDR error */
#define HAL_I2S_ERROR_DMA (0x00000008U) /*!< DMA transfer error */
#define HAL_I2S_ERROR_PRESCALER (0x00000010U) /*!< Prescaler Calculation error */
#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
#define HAL_I2S_ERROR_INVALID_CALLBACK (0x00000020U) /*!< Invalid Callback error */
#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
/**
* @}
*/
/** @defgroup I2S_Mode I2S Mode
* @{
*/
#define I2S_MODE_SLAVE_TX (0x00000000U)
#define I2S_MODE_SLAVE_RX (SPI_I2SCFGR_I2SCFG_0)
#define I2S_MODE_MASTER_TX (SPI_I2SCFGR_I2SCFG_1)
#define I2S_MODE_MASTER_RX ((SPI_I2SCFGR_I2SCFG_0 | SPI_I2SCFGR_I2SCFG_1))
/**
* @}
*/
/** @defgroup I2S_Standard I2S Standard
* @{
*/
#define I2S_STANDARD_PHILIPS (0x00000000U)
#define I2S_STANDARD_MSB (SPI_I2SCFGR_I2SSTD_0)
#define I2S_STANDARD_LSB (SPI_I2SCFGR_I2SSTD_1)
#define I2S_STANDARD_PCM_SHORT ((SPI_I2SCFGR_I2SSTD_0 | SPI_I2SCFGR_I2SSTD_1))
#define I2S_STANDARD_PCM_LONG ((SPI_I2SCFGR_I2SSTD_0 | SPI_I2SCFGR_I2SSTD_1 | SPI_I2SCFGR_PCMSYNC))
/**
* @}
*/
/** @defgroup I2S_Data_Format I2S Data Format
* @{
*/
#define I2S_DATAFORMAT_16B (0x00000000U)
#define I2S_DATAFORMAT_16B_EXTENDED (SPI_I2SCFGR_CHLEN)
#define I2S_DATAFORMAT_24B ((SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN_0))
#define I2S_DATAFORMAT_32B ((SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN_1))
/**
* @}
*/
/** @defgroup I2S_MCLK_Output I2S MCLK Output
* @{
*/
#define I2S_MCLKOUTPUT_ENABLE (SPI_I2SPR_MCKOE)
#define I2S_MCLKOUTPUT_DISABLE (0x00000000U)
/**
* @}
*/
/** @defgroup I2S_Audio_Frequency I2S Audio Frequency
* @{
*/
#define I2S_AUDIOFREQ_192K (192000U)
#define I2S_AUDIOFREQ_96K (96000U)
#define I2S_AUDIOFREQ_48K (48000U)
#define I2S_AUDIOFREQ_44K (44100U)
#define I2S_AUDIOFREQ_32K (32000U)
#define I2S_AUDIOFREQ_22K (22050U)
#define I2S_AUDIOFREQ_16K (16000U)
#define I2S_AUDIOFREQ_11K (11025U)
#define I2S_AUDIOFREQ_8K (8000U)
#define I2S_AUDIOFREQ_DEFAULT (2U)
/**
* @}
*/
/** @defgroup I2S_Clock_Polarity I2S Clock Polarity
* @{
*/
#define I2S_CPOL_LOW (0x00000000U)
#define I2S_CPOL_HIGH (SPI_I2SCFGR_CKPOL)
/**
* @}
*/
/** @defgroup I2S_Interrupts_Definition I2S Interrupts Definition
* @{
*/
#define I2S_IT_TXE SPI_CR2_TXEIE
#define I2S_IT_RXNE SPI_CR2_RXNEIE
#define I2S_IT_ERR SPI_CR2_ERRIE
/**
* @}
*/
/** @defgroup I2S_Flags_Definition I2S Flags Definition
* @{
*/
#define I2S_FLAG_TXE SPI_SR_TXE
#define I2S_FLAG_RXNE SPI_SR_RXNE
#define I2S_FLAG_UDR SPI_SR_UDR
#define I2S_FLAG_OVR SPI_SR_OVR
#define I2S_FLAG_FRE SPI_SR_FRE
#define I2S_FLAG_CHSIDE SPI_SR_CHSIDE
#define I2S_FLAG_BSY SPI_SR_BSY
#define I2S_FLAG_MASK (SPI_SR_RXNE\
| SPI_SR_TXE | SPI_SR_UDR | SPI_SR_OVR | SPI_SR_FRE | SPI_SR_CHSIDE | SPI_SR_BSY)
/**
* @}
*/
/**
* @}
*/
/* Exported macros -----------------------------------------------------------*/
/** @defgroup I2S_Exported_macros I2S Exported Macros
* @{
*/
/** @brief Reset I2S handle state
* @param __HANDLE__ specifies the I2S Handle.
* @retval None
*/
#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
#define __HAL_I2S_RESET_HANDLE_STATE(__HANDLE__) do{ \
(__HANDLE__)->State = HAL_I2S_STATE_RESET; \
(__HANDLE__)->MspInitCallback = NULL; \
(__HANDLE__)->MspDeInitCallback = NULL; \
} while(0)
#else
#define __HAL_I2S_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_I2S_STATE_RESET)
#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
/** @brief Enable the specified SPI peripheral (in I2S mode).
* @param __HANDLE__ specifies the I2S Handle.
* @retval None
*/
#define __HAL_I2S_ENABLE(__HANDLE__) (SET_BIT((__HANDLE__)->Instance->I2SCFGR, SPI_I2SCFGR_I2SE))
/** @brief Disable the specified SPI peripheral (in I2S mode).
* @param __HANDLE__ specifies the I2S Handle.
* @retval None
*/
#define __HAL_I2S_DISABLE(__HANDLE__) (CLEAR_BIT((__HANDLE__)->Instance->I2SCFGR, SPI_I2SCFGR_I2SE))
/** @brief Enable the specified I2S interrupts.
* @param __HANDLE__ specifies the I2S Handle.
* @param __INTERRUPT__ specifies the interrupt source to enable or disable.
* This parameter can be one of the following values:
* @arg I2S_IT_TXE: Tx buffer empty interrupt enable
* @arg I2S_IT_RXNE: RX buffer not empty interrupt enable
* @arg I2S_IT_ERR: Error interrupt enable
* @retval None
*/
#define __HAL_I2S_ENABLE_IT(__HANDLE__, __INTERRUPT__) (SET_BIT((__HANDLE__)->Instance->CR2,(__INTERRUPT__)))
/** @brief Disable the specified I2S interrupts.
* @param __HANDLE__ specifies the I2S Handle.
* @param __INTERRUPT__ specifies the interrupt source to enable or disable.
* This parameter can be one of the following values:
* @arg I2S_IT_TXE: Tx buffer empty interrupt enable
* @arg I2S_IT_RXNE: RX buffer not empty interrupt enable
* @arg I2S_IT_ERR: Error interrupt enable
* @retval None
*/
#define __HAL_I2S_DISABLE_IT(__HANDLE__, __INTERRUPT__) (CLEAR_BIT((__HANDLE__)->Instance->CR2,(__INTERRUPT__)))
/** @brief Checks if the specified I2S interrupt source is enabled or disabled.
* @param __HANDLE__ specifies the I2S Handle.
* This parameter can be I2S where x: 1, 2, or 3 to select the I2S peripheral.
* @param __INTERRUPT__ specifies the I2S interrupt source to check.
* This parameter can be one of the following values:
* @arg I2S_IT_TXE: Tx buffer empty interrupt enable
* @arg I2S_IT_RXNE: RX buffer not empty interrupt enable
* @arg I2S_IT_ERR: Error interrupt enable
* @retval The new state of __IT__ (TRUE or FALSE).
*/
#define __HAL_I2S_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) ((((__HANDLE__)->Instance->CR2\
& (__INTERRUPT__)) == (__INTERRUPT__)) ? SET : RESET)
/** @brief Checks whether the specified I2S flag is set or not.
* @param __HANDLE__ specifies the I2S Handle.
* @param __FLAG__ specifies the flag to check.
* This parameter can be one of the following values:
* @arg I2S_FLAG_RXNE: Receive buffer not empty flag
* @arg I2S_FLAG_TXE: Transmit buffer empty flag
* @arg I2S_FLAG_UDR: Underrun flag
* @arg I2S_FLAG_OVR: Overrun flag
* @arg I2S_FLAG_FRE: Frame error flag
* @arg I2S_FLAG_CHSIDE: Channel Side flag
* @arg I2S_FLAG_BSY: Busy flag
* @retval The new state of __FLAG__ (TRUE or FALSE).
*/
#define __HAL_I2S_GET_FLAG(__HANDLE__, __FLAG__) ((((__HANDLE__)->Instance->SR) & (__FLAG__)) == (__FLAG__))
/** @brief Clears the I2S OVR pending flag.
* @param __HANDLE__ specifies the I2S Handle.
* @retval None
*/
#define __HAL_I2S_CLEAR_OVRFLAG(__HANDLE__) do{ \
__IO uint32_t tmpreg_ovr = 0x00U; \
tmpreg_ovr = (__HANDLE__)->Instance->DR; \
tmpreg_ovr = (__HANDLE__)->Instance->SR; \
UNUSED(tmpreg_ovr); \
}while(0U)
/** @brief Clears the I2S UDR pending flag.
* @param __HANDLE__ specifies the I2S Handle.
* @retval None
*/
#define __HAL_I2S_CLEAR_UDRFLAG(__HANDLE__) do{\
__IO uint32_t tmpreg_udr = 0x00U;\
tmpreg_udr = ((__HANDLE__)->Instance->SR);\
UNUSED(tmpreg_udr); \
}while(0U)
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup I2S_Exported_Functions
* @{
*/
/** @addtogroup I2S_Exported_Functions_Group1
* @{
*/
/* Initialization/de-initialization functions ********************************/
HAL_StatusTypeDef HAL_I2S_Init(I2S_HandleTypeDef *hi2s);
HAL_StatusTypeDef HAL_I2S_DeInit(I2S_HandleTypeDef *hi2s);
void HAL_I2S_MspInit(I2S_HandleTypeDef *hi2s);
void HAL_I2S_MspDeInit(I2S_HandleTypeDef *hi2s);
/* Callbacks Register/UnRegister functions ***********************************/
#if (USE_HAL_I2S_REGISTER_CALLBACKS == 1U)
HAL_StatusTypeDef HAL_I2S_RegisterCallback(I2S_HandleTypeDef *hi2s, HAL_I2S_CallbackIDTypeDef CallbackID,
pI2S_CallbackTypeDef pCallback);
HAL_StatusTypeDef HAL_I2S_UnRegisterCallback(I2S_HandleTypeDef *hi2s, HAL_I2S_CallbackIDTypeDef CallbackID);
#endif /* USE_HAL_I2S_REGISTER_CALLBACKS */
/**
* @}
*/
/** @addtogroup I2S_Exported_Functions_Group2
* @{
*/
/* I/O operation functions ***************************************************/
/* Blocking mode: Polling */
HAL_StatusTypeDef HAL_I2S_Transmit(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size, uint32_t Timeout);
HAL_StatusTypeDef HAL_I2S_Receive(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size, uint32_t Timeout);
/* Non-Blocking mode: Interrupt */
HAL_StatusTypeDef HAL_I2S_Transmit_IT(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_I2S_Receive_IT(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
void HAL_I2S_IRQHandler(I2S_HandleTypeDef *hi2s);
/* Non-Blocking mode: DMA */
HAL_StatusTypeDef HAL_I2S_Transmit_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_I2S_Receive_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_I2S_DMAPause(I2S_HandleTypeDef *hi2s);
HAL_StatusTypeDef HAL_I2S_DMAResume(I2S_HandleTypeDef *hi2s);
HAL_StatusTypeDef HAL_I2S_DMAStop(I2S_HandleTypeDef *hi2s);
/* Callbacks used in non blocking modes (Interrupt and DMA) *******************/
void HAL_I2S_TxHalfCpltCallback(I2S_HandleTypeDef *hi2s);
void HAL_I2S_TxCpltCallback(I2S_HandleTypeDef *hi2s);
void HAL_I2S_RxHalfCpltCallback(I2S_HandleTypeDef *hi2s);
void HAL_I2S_RxCpltCallback(I2S_HandleTypeDef *hi2s);
void HAL_I2S_ErrorCallback(I2S_HandleTypeDef *hi2s);
/**
* @}
*/
/** @addtogroup I2S_Exported_Functions_Group3
* @{
*/
/* Peripheral Control and State functions ************************************/
HAL_I2S_StateTypeDef HAL_I2S_GetState(I2S_HandleTypeDef *hi2s);
uint32_t HAL_I2S_GetError(I2S_HandleTypeDef *hi2s);
/**
* @}
*/
/**
* @}
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @defgroup I2S_Private_Macros I2S Private Macros
* @{
*/
/** @brief Check whether the specified SPI flag is set or not.
* @param __SR__ copy of I2S SR regsiter.
* @param __FLAG__ specifies the flag to check.
* This parameter can be one of the following values:
* @arg I2S_FLAG_RXNE: Receive buffer not empty flag
* @arg I2S_FLAG_TXE: Transmit buffer empty flag
* @arg I2S_FLAG_UDR: Underrun error flag
* @arg I2S_FLAG_OVR: Overrun flag
* @arg I2S_FLAG_CHSIDE: Channel side flag
* @arg I2S_FLAG_BSY: Busy flag
* @retval SET or RESET.
*/
#define I2S_CHECK_FLAG(__SR__, __FLAG__) ((((__SR__)\
& ((__FLAG__) & I2S_FLAG_MASK)) == ((__FLAG__) & I2S_FLAG_MASK)) ? SET : RESET)
/** @brief Check whether the specified SPI Interrupt is set or not.
* @param __CR2__ copy of I2S CR2 regsiter.
* @param __INTERRUPT__ specifies the SPI interrupt source to check.
* This parameter can be one of the following values:
* @arg I2S_IT_TXE: Tx buffer empty interrupt enable
* @arg I2S_IT_RXNE: RX buffer not empty interrupt enable
* @arg I2S_IT_ERR: Error interrupt enable
* @retval SET or RESET.
*/
#define I2S_CHECK_IT_SOURCE(__CR2__, __INTERRUPT__) ((((__CR2__)\
& (__INTERRUPT__)) == (__INTERRUPT__)) ? SET : RESET)
/** @brief Checks if I2S Mode parameter is in allowed range.
* @param __MODE__ specifies the I2S Mode.
* This parameter can be a value of @ref I2S_Mode
* @retval None
*/
#define IS_I2S_MODE(__MODE__) (((__MODE__) == I2S_MODE_SLAVE_TX) || \
((__MODE__) == I2S_MODE_SLAVE_RX) || \
((__MODE__) == I2S_MODE_MASTER_TX) || \
((__MODE__) == I2S_MODE_MASTER_RX))
#define IS_I2S_STANDARD(__STANDARD__) (((__STANDARD__) == I2S_STANDARD_PHILIPS) || \
((__STANDARD__) == I2S_STANDARD_MSB) || \
((__STANDARD__) == I2S_STANDARD_LSB) || \
((__STANDARD__) == I2S_STANDARD_PCM_SHORT) || \
((__STANDARD__) == I2S_STANDARD_PCM_LONG))
#define IS_I2S_DATA_FORMAT(__FORMAT__) (((__FORMAT__) == I2S_DATAFORMAT_16B) || \
((__FORMAT__) == I2S_DATAFORMAT_16B_EXTENDED) || \
((__FORMAT__) == I2S_DATAFORMAT_24B) || \
((__FORMAT__) == I2S_DATAFORMAT_32B))
#define IS_I2S_MCLK_OUTPUT(__OUTPUT__) (((__OUTPUT__) == I2S_MCLKOUTPUT_ENABLE) || \
((__OUTPUT__) == I2S_MCLKOUTPUT_DISABLE))
#define IS_I2S_AUDIO_FREQ(__FREQ__) ((((__FREQ__) >= I2S_AUDIOFREQ_8K) && \
((__FREQ__) <= I2S_AUDIOFREQ_192K)) || \
((__FREQ__) == I2S_AUDIOFREQ_DEFAULT))
/** @brief Checks if I2S Serial clock steady state parameter is in allowed range.
* @param __CPOL__ specifies the I2S serial clock steady state.
* This parameter can be a value of @ref I2S_Clock_Polarity
* @retval None
*/
#define IS_I2S_CPOL(__CPOL__) (((__CPOL__) == I2S_CPOL_LOW) || \
((__CPOL__) == I2S_CPOL_HIGH))
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* SPI_I2S_SUPPORT */
#ifdef __cplusplus
}
#endif
#endif /* STM32F0xx_HAL_I2S_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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