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Rev	Author	Line No.	Line
56	mjames	1	/**
		2	******************************************************************************
		3	* @file stm32l1xx_ll_spi.h
		4	* @author MCD Application Team
		5	* @brief Header file of SPI LL module.
		6	******************************************************************************
		7	* @attention
		8	*
		9	* <h2><center>© Copyright (c) 2016 STMicroelectronics.
		10	* All rights reserved.</center></h2>
		11	*
		12	* This software component is licensed by ST under BSD 3-Clause license,
		13	* the "License"; You may not use this file except in compliance with the
		14	* License. You may obtain a copy of the License at:
		15	* opensource.org/licenses/BSD-3-Clause
		16	*
		17	******************************************************************************
		18	*/
		19
		20	/* Define to prevent recursive inclusion -------------------------------------*/
		21	#ifndef STM32L1xx_LL_SPI_H
		22	#define STM32L1xx_LL_SPI_H
		23
		24	#ifdef __cplusplus
		25	extern "C" {
		26	#endif
		27
		28	/* Includes ------------------------------------------------------------------*/
		29	#include "stm32l1xx.h"
		30
		31	/** @addtogroup STM32L1xx_LL_Driver
		32	* @{
		33	*/
		34
		35	#if defined (SPI1) \|\| defined (SPI2) \|\| defined (SPI3)
		36
		37	/** @defgroup SPI_LL SPI
		38	* @{
		39	*/
		40
		41	/* Private types -------------------------------------------------------------*/
		42	/* Private variables ---------------------------------------------------------*/
		43	/* Private macros ------------------------------------------------------------*/
		44
		45	/* Exported types ------------------------------------------------------------*/
		46	#if defined(USE_FULL_LL_DRIVER)
		47	/** @defgroup SPI_LL_ES_INIT SPI Exported Init structure
		48	* @{
		49	*/
		50
		51	/**
		52	* @brief SPI Init structures definition
		53	*/
		54	typedef struct
		55	{
		56	uint32_t TransferDirection; /*!< Specifies the SPI unidirectional or bidirectional data mode.
		57	This parameter can be a value of @ref SPI_LL_EC_TRANSFER_MODE.
		58
		59	This feature can be modified afterwards using unitary function @ref LL_SPI_SetTransferDirection().*/
		60
		61	uint32_t Mode; /*!< Specifies the SPI mode (Master/Slave).
		62	This parameter can be a value of @ref SPI_LL_EC_MODE.
		63
		64	This feature can be modified afterwards using unitary function @ref LL_SPI_SetMode().*/
		65
		66	uint32_t DataWidth; /*!< Specifies the SPI data width.
		67	This parameter can be a value of @ref SPI_LL_EC_DATAWIDTH.
		68
		69	This feature can be modified afterwards using unitary function @ref LL_SPI_SetDataWidth().*/
		70
		71	uint32_t ClockPolarity; /*!< Specifies the serial clock steady state.
		72	This parameter can be a value of @ref SPI_LL_EC_POLARITY.
		73
		74	This feature can be modified afterwards using unitary function @ref LL_SPI_SetClockPolarity().*/
		75
		76	uint32_t ClockPhase; /*!< Specifies the clock active edge for the bit capture.
		77	This parameter can be a value of @ref SPI_LL_EC_PHASE.
		78
		79	This feature can be modified afterwards using unitary function @ref LL_SPI_SetClockPhase().*/
		80
		81	uint32_t NSS; /*!< Specifies whether the NSS signal is managed by hardware (NSS pin) or by software using the SSI bit.
		82	This parameter can be a value of @ref SPI_LL_EC_NSS_MODE.
		83
		84	This feature can be modified afterwards using unitary function @ref LL_SPI_SetNSSMode().*/
		85
		86	uint32_t BaudRate; /*!< Specifies the BaudRate prescaler value which will be used to configure the transmit and receive SCK clock.
		87	This parameter can be a value of @ref SPI_LL_EC_BAUDRATEPRESCALER.
		88	@note The communication clock is derived from the master clock. The slave clock does not need to be set.
		89
		90	This feature can be modified afterwards using unitary function @ref LL_SPI_SetBaudRatePrescaler().*/
		91
		92	uint32_t BitOrder; /*!< Specifies whether data transfers start from MSB or LSB bit.
		93	This parameter can be a value of @ref SPI_LL_EC_BIT_ORDER.
		94
		95	This feature can be modified afterwards using unitary function @ref LL_SPI_SetTransferBitOrder().*/
		96
		97	uint32_t CRCCalculation; /*!< Specifies if the CRC calculation is enabled or not.
		98	This parameter can be a value of @ref SPI_LL_EC_CRC_CALCULATION.
		99
		100	This feature can be modified afterwards using unitary functions @ref LL_SPI_EnableCRC() and @ref LL_SPI_DisableCRC().*/
		101
		102	uint32_t CRCPoly; /*!< Specifies the polynomial used for the CRC calculation.
		103	This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFFFF.
		104
		105	This feature can be modified afterwards using unitary function @ref LL_SPI_SetCRCPolynomial().*/
		106
		107	} LL_SPI_InitTypeDef;
		108
		109	/**
		110	* @}
		111	*/
		112	#endif /* USE_FULL_LL_DRIVER */
		113
		114	/* Exported constants --------------------------------------------------------*/
		115	/** @defgroup SPI_LL_Exported_Constants SPI Exported Constants
		116	* @{
		117	*/
		118
		119	/** @defgroup SPI_LL_EC_GET_FLAG Get Flags Defines
		120	* @brief Flags defines which can be used with LL_SPI_ReadReg function
		121	* @{
		122	*/
		123	#define LL_SPI_SR_RXNE SPI_SR_RXNE /!< Rx buffer not empty flag /
		124	#define LL_SPI_SR_TXE SPI_SR_TXE /!< Tx buffer empty flag /
		125	#define LL_SPI_SR_BSY SPI_SR_BSY /!< Busy flag /
		126	#define LL_SPI_SR_CRCERR SPI_SR_CRCERR /!< CRC error flag /
		127	#define LL_SPI_SR_MODF SPI_SR_MODF /!< Mode fault flag /
		128	#define LL_SPI_SR_OVR SPI_SR_OVR /!< Overrun flag /
		129	#define LL_SPI_SR_FRE SPI_SR_FRE /!< TI mode frame format error flag /
		130	/**
		131	* @}
		132	*/
		133
		134	/** @defgroup SPI_LL_EC_IT IT Defines
		135	* @brief IT defines which can be used with LL_SPI_ReadReg and LL_SPI_WriteReg functions
		136	* @{
		137	*/
		138	#define LL_SPI_CR2_RXNEIE SPI_CR2_RXNEIE /!< Rx buffer not empty interrupt enable /
		139	#define LL_SPI_CR2_TXEIE SPI_CR2_TXEIE /!< Tx buffer empty interrupt enable /
		140	#define LL_SPI_CR2_ERRIE SPI_CR2_ERRIE /!< Error interrupt enable /
		141	/**
		142	* @}
		143	*/
		144
		145	/** @defgroup SPI_LL_EC_MODE Operation Mode
		146	* @{
		147	*/
		148	#define LL_SPI_MODE_MASTER (SPI_CR1_MSTR \| SPI_CR1_SSI) /!< Master configuration /
		149	#define LL_SPI_MODE_SLAVE 0x00000000U /!< Slave configuration /
		150	/**
		151	* @}
		152	*/
		153
		154	/** @defgroup SPI_LL_EC_PROTOCOL Serial Protocol
		155	* @brief SPI TI Mode not supported for Category 1 and 2
		156	* @{
		157	*/
		158	#define LL_SPI_PROTOCOL_MOTOROLA 0x00000000U /!< Motorola mode. Used as default value /
		159	#if defined(SPI_CR2_FRF)
		160	#define LL_SPI_PROTOCOL_TI (SPI_CR2_FRF) /!< TI mode /
		161	#endif
		162	/**
		163	* @}
		164	*/
		165
		166	/** @defgroup SPI_LL_EC_PHASE Clock Phase
		167	* @{
		168	*/
		169	#define LL_SPI_PHASE_1EDGE 0x00000000U /!< First clock transition is the first data capture edge /
		170	#define LL_SPI_PHASE_2EDGE (SPI_CR1_CPHA) /!< Second clock transition is the first data capture edge /
		171	/**
		172	* @}
		173	*/
		174
		175	/** @defgroup SPI_LL_EC_POLARITY Clock Polarity
		176	* @{
		177	*/
		178	#define LL_SPI_POLARITY_LOW 0x00000000U /!< Clock to 0 when idle /
		179	#define LL_SPI_POLARITY_HIGH (SPI_CR1_CPOL) /!< Clock to 1 when idle /
		180	/**
		181	* @}
		182	*/
		183
		184	/** @defgroup SPI_LL_EC_BAUDRATEPRESCALER Baud Rate Prescaler
		185	* @{
		186	*/
		187	#define LL_SPI_BAUDRATEPRESCALER_DIV2 0x00000000U /!< BaudRate control equal to fPCLK/2 /
		188	#define LL_SPI_BAUDRATEPRESCALER_DIV4 (SPI_CR1_BR_0) /!< BaudRate control equal to fPCLK/4 /
		189	#define LL_SPI_BAUDRATEPRESCALER_DIV8 (SPI_CR1_BR_1) /!< BaudRate control equal to fPCLK/8 /
		190	#define LL_SPI_BAUDRATEPRESCALER_DIV16 (SPI_CR1_BR_1 \| SPI_CR1_BR_0) /!< BaudRate control equal to fPCLK/16 /
		191	#define LL_SPI_BAUDRATEPRESCALER_DIV32 (SPI_CR1_BR_2) /!< BaudRate control equal to fPCLK/32 /
		192	#define LL_SPI_BAUDRATEPRESCALER_DIV64 (SPI_CR1_BR_2 \| SPI_CR1_BR_0) /!< BaudRate control equal to fPCLK/64 /
		193	#define LL_SPI_BAUDRATEPRESCALER_DIV128 (SPI_CR1_BR_2 \| SPI_CR1_BR_1) /!< BaudRate control equal to fPCLK/128 /
		194	#define LL_SPI_BAUDRATEPRESCALER_DIV256 (SPI_CR1_BR_2 \| SPI_CR1_BR_1 \| SPI_CR1_BR_0) /!< BaudRate control equal to fPCLK/256 /
		195	/**
		196	* @}
		197	*/
		198
		199	/** @defgroup SPI_LL_EC_BIT_ORDER Transmission Bit Order
		200	* @{
		201	*/
		202	#define LL_SPI_LSB_FIRST (SPI_CR1_LSBFIRST) /!< Data is transmitted/received with the LSB first /
		203	#define LL_SPI_MSB_FIRST 0x00000000U /!< Data is transmitted/received with the MSB first /
		204	/**
		205	* @}
		206	*/
		207
		208	/** @defgroup SPI_LL_EC_TRANSFER_MODE Transfer Mode
		209	* @{
		210	*/
		211	#define LL_SPI_FULL_DUPLEX 0x00000000U /!< Full-Duplex mode. Rx and Tx transfer on 2 lines /
		212	#define LL_SPI_SIMPLEX_RX (SPI_CR1_RXONLY) /!< Simplex Rx mode. Rx transfer only on 1 line /
		213	#define LL_SPI_HALF_DUPLEX_RX (SPI_CR1_BIDIMODE) /!< Half-Duplex Rx mode. Rx transfer on 1 line /
		214	#define LL_SPI_HALF_DUPLEX_TX (SPI_CR1_BIDIMODE \| SPI_CR1_BIDIOE) /!< Half-Duplex Tx mode. Tx transfer on 1 line /
		215	/**
		216	* @}
		217	*/
		218
		219	/** @defgroup SPI_LL_EC_NSS_MODE Slave Select Pin Mode
		220	* @{
		221	*/
		222	#define LL_SPI_NSS_SOFT (SPI_CR1_SSM) /!< NSS managed internally. NSS pin not used and free /
		223	#define LL_SPI_NSS_HARD_INPUT 0x00000000U /!< NSS pin used in Input. Only used in Master mode /
		224	#define LL_SPI_NSS_HARD_OUTPUT (((uint32_t)SPI_CR2_SSOE << 16U)) /!< NSS pin used in Output. Only used in Slave mode as chip select /
		225	/**
		226	* @}
		227	*/
		228
		229	/** @defgroup SPI_LL_EC_DATAWIDTH Datawidth
		230	* @{
		231	*/
		232	#define LL_SPI_DATAWIDTH_8BIT 0x00000000U /!< Data length for SPI transfer: 8 bits /
		233	#define LL_SPI_DATAWIDTH_16BIT (SPI_CR1_DFF) /!< Data length for SPI transfer: 16 bits /
		234	/**
		235	* @}
		236	*/
		237	#if defined(USE_FULL_LL_DRIVER)
		238
		239	/** @defgroup SPI_LL_EC_CRC_CALCULATION CRC Calculation
		240	* @{
		241	*/
		242	#define LL_SPI_CRCCALCULATION_DISABLE 0x00000000U /!< CRC calculation disabled /
		243	#define LL_SPI_CRCCALCULATION_ENABLE (SPI_CR1_CRCEN) /!< CRC calculation enabled /
		244	/**
		245	* @}
		246	*/
		247	#endif /* USE_FULL_LL_DRIVER */
		248
		249	/**
		250	* @}
		251	*/
		252
		253	/* Exported macro ------------------------------------------------------------*/
		254	/** @defgroup SPI_LL_Exported_Macros SPI Exported Macros
		255	* @{
		256	*/
		257
		258	/** @defgroup SPI_LL_EM_WRITE_READ Common Write and read registers Macros
		259	* @{
		260	*/
		261
		262	/**
		263	* @brief Write a value in SPI register
		264	* @param __INSTANCE__ SPI Instance
		265	* @param __REG__ Register to be written
		266	* @param __VALUE__ Value to be written in the register
		267	* @retval None
		268	*/
		269	#define LL_SPI_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
		270
		271	/**
		272	* @brief Read a value in SPI register
		273	* @param __INSTANCE__ SPI Instance
		274	* @param __REG__ Register to be read
		275	* @retval Register value
		276	*/
		277	#define LL_SPI_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
		278	/**
		279	* @}
		280	*/
		281
		282	/**
		283	* @}
		284	*/
		285
		286	/* Exported functions --------------------------------------------------------*/
		287	/** @defgroup SPI_LL_Exported_Functions SPI Exported Functions
		288	* @{
		289	*/
		290
		291	/** @defgroup SPI_LL_EF_Configuration Configuration
		292	* @{
		293	*/
		294
		295	/**
		296	* @brief Enable SPI peripheral
		297	* @rmtoll CR1 SPE LL_SPI_Enable
		298	* @param SPIx SPI Instance
		299	* @retval None
		300	*/
		301	__STATIC_INLINE void LL_SPI_Enable(SPI_TypeDef *SPIx)
		302	{
		303	SET_BIT(SPIx->CR1, SPI_CR1_SPE);
		304	}
		305
		306	/**
		307	* @brief Disable SPI peripheral
		308	* @note When disabling the SPI, follow the procedure described in the Reference Manual.
		309	* @rmtoll CR1 SPE LL_SPI_Disable
		310	* @param SPIx SPI Instance
		311	* @retval None
		312	*/
		313	__STATIC_INLINE void LL_SPI_Disable(SPI_TypeDef *SPIx)
		314	{
		315	CLEAR_BIT(SPIx->CR1, SPI_CR1_SPE);
		316	}
		317
		318	/**
		319	* @brief Check if SPI peripheral is enabled
		320	* @rmtoll CR1 SPE LL_SPI_IsEnabled
		321	* @param SPIx SPI Instance
		322	* @retval State of bit (1 or 0).
		323	*/
		324	__STATIC_INLINE uint32_t LL_SPI_IsEnabled(SPI_TypeDef *SPIx)
		325	{
		326	return ((READ_BIT(SPIx->CR1, SPI_CR1_SPE) == (SPI_CR1_SPE)) ? 1UL : 0UL);
		327	}
		328
		329	/**
		330	* @brief Set SPI operation mode to Master or Slave
		331	* @note This bit should not be changed when communication is ongoing.
		332	* @rmtoll CR1 MSTR LL_SPI_SetMode\n
		333	* CR1 SSI LL_SPI_SetMode
		334	* @param SPIx SPI Instance
		335	* @param Mode This parameter can be one of the following values:
		336	* @arg @ref LL_SPI_MODE_MASTER
		337	* @arg @ref LL_SPI_MODE_SLAVE
		338	* @retval None
		339	*/
		340	__STATIC_INLINE void LL_SPI_SetMode(SPI_TypeDef *SPIx, uint32_t Mode)
		341	{
		342	MODIFY_REG(SPIx->CR1, SPI_CR1_MSTR \| SPI_CR1_SSI, Mode);
		343	}
		344
		345	/**
		346	* @brief Get SPI operation mode (Master or Slave)
		347	* @rmtoll CR1 MSTR LL_SPI_GetMode\n
		348	* CR1 SSI LL_SPI_GetMode
		349	* @param SPIx SPI Instance
		350	* @retval Returned value can be one of the following values:
		351	* @arg @ref LL_SPI_MODE_MASTER
		352	* @arg @ref LL_SPI_MODE_SLAVE
		353	*/
		354	__STATIC_INLINE uint32_t LL_SPI_GetMode(SPI_TypeDef *SPIx)
		355	{
		356	return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_MSTR \| SPI_CR1_SSI));
		357	}
		358
		359	#if defined(SPI_CR2_FRF)
		360	/**
		361	* @brief Set serial protocol used. TI Mode not supported for Category 1 and 2.
		362	* @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation.
		363	* @rmtoll CR2 FRF LL_SPI_SetStandard
		364	* @param SPIx SPI Instance
		365	* @param Standard This parameter can be one of the following values:
		366	* @arg @ref LL_SPI_PROTOCOL_MOTOROLA
		367	* @arg @ref LL_SPI_PROTOCOL_TI
		368	* @retval None
		369	*/
		370	__STATIC_INLINE void LL_SPI_SetStandard(SPI_TypeDef *SPIx, uint32_t Standard)
		371	{
		372	MODIFY_REG(SPIx->CR2, SPI_CR2_FRF, Standard);
		373	}
		374
		375	/**
		376	* @brief Get serial protocol used
		377	* @rmtoll CR2 FRF LL_SPI_GetStandard
		378	* @param SPIx SPI Instance
		379	* @retval Returned value can be one of the following values:
		380	* @arg @ref LL_SPI_PROTOCOL_MOTOROLA
		381	* @arg @ref LL_SPI_PROTOCOL_TI
		382	*/
		383	__STATIC_INLINE uint32_t LL_SPI_GetStandard(SPI_TypeDef *SPIx)
		384	{
		385	return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_FRF));
		386	}
		387	#endif
		388
		389	/**
		390	* @brief Set clock phase
		391	* @note This bit should not be changed when communication is ongoing.
		392	* This bit is not used in SPI TI mode.
		393	* @rmtoll CR1 CPHA LL_SPI_SetClockPhase
		394	* @param SPIx SPI Instance
		395	* @param ClockPhase This parameter can be one of the following values:
		396	* @arg @ref LL_SPI_PHASE_1EDGE
		397	* @arg @ref LL_SPI_PHASE_2EDGE
		398	* @retval None
		399	*/
		400	__STATIC_INLINE void LL_SPI_SetClockPhase(SPI_TypeDef *SPIx, uint32_t ClockPhase)
		401	{
		402	MODIFY_REG(SPIx->CR1, SPI_CR1_CPHA, ClockPhase);
		403	}
		404
		405	/**
		406	* @brief Get clock phase
		407	* @rmtoll CR1 CPHA LL_SPI_GetClockPhase
		408	* @param SPIx SPI Instance
		409	* @retval Returned value can be one of the following values:
		410	* @arg @ref LL_SPI_PHASE_1EDGE
		411	* @arg @ref LL_SPI_PHASE_2EDGE
		412	*/
		413	__STATIC_INLINE uint32_t LL_SPI_GetClockPhase(SPI_TypeDef *SPIx)
		414	{
		415	return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_CPHA));
		416	}
		417
		418	/**
		419	* @brief Set clock polarity
		420	* @note This bit should not be changed when communication is ongoing.
		421	* This bit is not used in SPI TI mode.
		422	* @rmtoll CR1 CPOL LL_SPI_SetClockPolarity
		423	* @param SPIx SPI Instance
		424	* @param ClockPolarity This parameter can be one of the following values:
		425	* @arg @ref LL_SPI_POLARITY_LOW
		426	* @arg @ref LL_SPI_POLARITY_HIGH
		427	* @retval None
		428	*/
		429	__STATIC_INLINE void LL_SPI_SetClockPolarity(SPI_TypeDef *SPIx, uint32_t ClockPolarity)
		430	{
		431	MODIFY_REG(SPIx->CR1, SPI_CR1_CPOL, ClockPolarity);
		432	}
		433
		434	/**
		435	* @brief Get clock polarity
		436	* @rmtoll CR1 CPOL LL_SPI_GetClockPolarity
		437	* @param SPIx SPI Instance
		438	* @retval Returned value can be one of the following values:
		439	* @arg @ref LL_SPI_POLARITY_LOW
		440	* @arg @ref LL_SPI_POLARITY_HIGH
		441	*/
		442	__STATIC_INLINE uint32_t LL_SPI_GetClockPolarity(SPI_TypeDef *SPIx)
		443	{
		444	return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_CPOL));
		445	}
		446
		447	/**
		448	* @brief Set baud rate prescaler
		449	* @note These bits should not be changed when communication is ongoing. SPI BaudRate = fPCLK/Prescaler.
		450	* @rmtoll CR1 BR LL_SPI_SetBaudRatePrescaler
		451	* @param SPIx SPI Instance
		452	* @param BaudRate This parameter can be one of the following values:
		453	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV2
		454	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV4
		455	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV8
		456	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV16
		457	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV32
		458	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV64
		459	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV128
		460	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV256
		461	* @retval None
		462	*/
		463	__STATIC_INLINE void LL_SPI_SetBaudRatePrescaler(SPI_TypeDef *SPIx, uint32_t BaudRate)
		464	{
		465	MODIFY_REG(SPIx->CR1, SPI_CR1_BR, BaudRate);
		466	}
		467
		468	/**
		469	* @brief Get baud rate prescaler
		470	* @rmtoll CR1 BR LL_SPI_GetBaudRatePrescaler
		471	* @param SPIx SPI Instance
		472	* @retval Returned value can be one of the following values:
		473	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV2
		474	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV4
		475	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV8
		476	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV16
		477	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV32
		478	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV64
		479	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV128
		480	* @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV256
		481	*/
		482	__STATIC_INLINE uint32_t LL_SPI_GetBaudRatePrescaler(SPI_TypeDef *SPIx)
		483	{
		484	return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_BR));
		485	}
		486
		487	/**
		488	* @brief Set transfer bit order
		489	* @note This bit should not be changed when communication is ongoing. This bit is not used in SPI TI mode.
		490	* @rmtoll CR1 LSBFIRST LL_SPI_SetTransferBitOrder
		491	* @param SPIx SPI Instance
		492	* @param BitOrder This parameter can be one of the following values:
		493	* @arg @ref LL_SPI_LSB_FIRST
		494	* @arg @ref LL_SPI_MSB_FIRST
		495	* @retval None
		496	*/
		497	__STATIC_INLINE void LL_SPI_SetTransferBitOrder(SPI_TypeDef *SPIx, uint32_t BitOrder)
		498	{
		499	MODIFY_REG(SPIx->CR1, SPI_CR1_LSBFIRST, BitOrder);
		500	}
		501
		502	/**
		503	* @brief Get transfer bit order
		504	* @rmtoll CR1 LSBFIRST LL_SPI_GetTransferBitOrder
		505	* @param SPIx SPI Instance
		506	* @retval Returned value can be one of the following values:
		507	* @arg @ref LL_SPI_LSB_FIRST
		508	* @arg @ref LL_SPI_MSB_FIRST
		509	*/
		510	__STATIC_INLINE uint32_t LL_SPI_GetTransferBitOrder(SPI_TypeDef *SPIx)
		511	{
		512	return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_LSBFIRST));
		513	}
		514
		515	/**
		516	* @brief Set transfer direction mode
		517	* @note For Half-Duplex mode, Rx Direction is set by default.
		518	* In master mode, the MOSI pin is used and in slave mode, the MISO pin is used for Half-Duplex.
		519	* @rmtoll CR1 RXONLY LL_SPI_SetTransferDirection\n
		520	* CR1 BIDIMODE LL_SPI_SetTransferDirection\n
		521	* CR1 BIDIOE LL_SPI_SetTransferDirection
		522	* @param SPIx SPI Instance
		523	* @param TransferDirection This parameter can be one of the following values:
		524	* @arg @ref LL_SPI_FULL_DUPLEX
		525	* @arg @ref LL_SPI_SIMPLEX_RX
		526	* @arg @ref LL_SPI_HALF_DUPLEX_RX
		527	* @arg @ref LL_SPI_HALF_DUPLEX_TX
		528	* @retval None
		529	*/
		530	__STATIC_INLINE void LL_SPI_SetTransferDirection(SPI_TypeDef *SPIx, uint32_t TransferDirection)
		531	{
		532	MODIFY_REG(SPIx->CR1, SPI_CR1_RXONLY \| SPI_CR1_BIDIMODE \| SPI_CR1_BIDIOE, TransferDirection);
		533	}
		534
		535	/**
		536	* @brief Get transfer direction mode
		537	* @rmtoll CR1 RXONLY LL_SPI_GetTransferDirection\n
		538	* CR1 BIDIMODE LL_SPI_GetTransferDirection\n
		539	* CR1 BIDIOE LL_SPI_GetTransferDirection
		540	* @param SPIx SPI Instance
		541	* @retval Returned value can be one of the following values:
		542	* @arg @ref LL_SPI_FULL_DUPLEX
		543	* @arg @ref LL_SPI_SIMPLEX_RX
		544	* @arg @ref LL_SPI_HALF_DUPLEX_RX
		545	* @arg @ref LL_SPI_HALF_DUPLEX_TX
		546	*/
		547	__STATIC_INLINE uint32_t LL_SPI_GetTransferDirection(SPI_TypeDef *SPIx)
		548	{
		549	return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_RXONLY \| SPI_CR1_BIDIMODE \| SPI_CR1_BIDIOE));
		550	}
		551
		552	/**
		553	* @brief Set frame data width
		554	* @rmtoll CR1 DFF LL_SPI_SetDataWidth
		555	* @param SPIx SPI Instance
		556	* @param DataWidth This parameter can be one of the following values:
		557	* @arg @ref LL_SPI_DATAWIDTH_8BIT
		558	* @arg @ref LL_SPI_DATAWIDTH_16BIT
		559	* @retval None
		560	*/
		561	__STATIC_INLINE void LL_SPI_SetDataWidth(SPI_TypeDef *SPIx, uint32_t DataWidth)
		562	{
		563	MODIFY_REG(SPIx->CR1, SPI_CR1_DFF, DataWidth);
		564	}
		565
		566	/**
		567	* @brief Get frame data width
		568	* @rmtoll CR1 DFF LL_SPI_GetDataWidth
		569	* @param SPIx SPI Instance
		570	* @retval Returned value can be one of the following values:
		571	* @arg @ref LL_SPI_DATAWIDTH_8BIT
		572	* @arg @ref LL_SPI_DATAWIDTH_16BIT
		573	*/
		574	__STATIC_INLINE uint32_t LL_SPI_GetDataWidth(SPI_TypeDef *SPIx)
		575	{
		576	return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_DFF));
		577	}
		578
		579	/**
		580	* @}
		581	*/
		582
		583	/** @defgroup SPI_LL_EF_CRC_Management CRC Management
		584	* @{
		585	*/
		586
		587	/**
		588	* @brief Enable CRC
		589	* @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation.
		590	* @rmtoll CR1 CRCEN LL_SPI_EnableCRC
		591	* @param SPIx SPI Instance
		592	* @retval None
		593	*/
		594	__STATIC_INLINE void LL_SPI_EnableCRC(SPI_TypeDef *SPIx)
		595	{
		596	SET_BIT(SPIx->CR1, SPI_CR1_CRCEN);
		597	}
		598
		599	/**
		600	* @brief Disable CRC
		601	* @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation.
		602	* @rmtoll CR1 CRCEN LL_SPI_DisableCRC
		603	* @param SPIx SPI Instance
		604	* @retval None
		605	*/
		606	__STATIC_INLINE void LL_SPI_DisableCRC(SPI_TypeDef *SPIx)
		607	{
		608	CLEAR_BIT(SPIx->CR1, SPI_CR1_CRCEN);
		609	}
		610
		611	/**
		612	* @brief Check if CRC is enabled
		613	* @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation.
		614	* @rmtoll CR1 CRCEN LL_SPI_IsEnabledCRC
		615	* @param SPIx SPI Instance
		616	* @retval State of bit (1 or 0).
		617	*/
		618	__STATIC_INLINE uint32_t LL_SPI_IsEnabledCRC(SPI_TypeDef *SPIx)
		619	{
		620	return ((READ_BIT(SPIx->CR1, SPI_CR1_CRCEN) == (SPI_CR1_CRCEN)) ? 1UL : 0UL);
		621	}
		622
		623	/**
		624	* @brief Set CRCNext to transfer CRC on the line
		625	* @note This bit has to be written as soon as the last data is written in the SPIx_DR register.
		626	* @rmtoll CR1 CRCNEXT LL_SPI_SetCRCNext
		627	* @param SPIx SPI Instance
		628	* @retval None
		629	*/
		630	__STATIC_INLINE void LL_SPI_SetCRCNext(SPI_TypeDef *SPIx)
		631	{
		632	SET_BIT(SPIx->CR1, SPI_CR1_CRCNEXT);
		633	}
		634
		635	/**
		636	* @brief Set polynomial for CRC calculation
		637	* @rmtoll CRCPR CRCPOLY LL_SPI_SetCRCPolynomial
		638	* @param SPIx SPI Instance
		639	* @param CRCPoly This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFFFF
		640	* @retval None
		641	*/
		642	__STATIC_INLINE void LL_SPI_SetCRCPolynomial(SPI_TypeDef *SPIx, uint32_t CRCPoly)
		643	{
		644	WRITE_REG(SPIx->CRCPR, (uint16_t)CRCPoly);
		645	}
		646
		647	/**
		648	* @brief Get polynomial for CRC calculation
		649	* @rmtoll CRCPR CRCPOLY LL_SPI_GetCRCPolynomial
		650	* @param SPIx SPI Instance
		651	* @retval Returned value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF
		652	*/
		653	__STATIC_INLINE uint32_t LL_SPI_GetCRCPolynomial(SPI_TypeDef *SPIx)
		654	{
		655	return (uint32_t)(READ_REG(SPIx->CRCPR));
		656	}
		657
		658	/**
		659	* @brief Get Rx CRC
		660	* @rmtoll RXCRCR RXCRC LL_SPI_GetRxCRC
		661	* @param SPIx SPI Instance
		662	* @retval Returned value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF
		663	*/
		664	__STATIC_INLINE uint32_t LL_SPI_GetRxCRC(SPI_TypeDef *SPIx)
		665	{
		666	return (uint32_t)(READ_REG(SPIx->RXCRCR));
		667	}
		668
		669	/**
		670	* @brief Get Tx CRC
		671	* @rmtoll TXCRCR TXCRC LL_SPI_GetTxCRC
		672	* @param SPIx SPI Instance
		673	* @retval Returned value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF
		674	*/
		675	__STATIC_INLINE uint32_t LL_SPI_GetTxCRC(SPI_TypeDef *SPIx)
		676	{
		677	return (uint32_t)(READ_REG(SPIx->TXCRCR));
		678	}
		679
		680	/**
		681	* @}
		682	*/
		683
		684	/** @defgroup SPI_LL_EF_NSS_Management Slave Select Pin Management
		685	* @{
		686	*/
		687
		688	/**
		689	* @brief Set NSS mode
		690	* @note LL_SPI_NSS_SOFT Mode is not used in SPI TI mode.
		691	* @rmtoll CR1 SSM LL_SPI_SetNSSMode\n
		692	* @rmtoll CR2 SSOE LL_SPI_SetNSSMode
		693	* @param SPIx SPI Instance
		694	* @param NSS This parameter can be one of the following values:
		695	* @arg @ref LL_SPI_NSS_SOFT
		696	* @arg @ref LL_SPI_NSS_HARD_INPUT
		697	* @arg @ref LL_SPI_NSS_HARD_OUTPUT
		698	* @retval None
		699	*/
		700	__STATIC_INLINE void LL_SPI_SetNSSMode(SPI_TypeDef *SPIx, uint32_t NSS)
		701	{
		702	MODIFY_REG(SPIx->CR1, SPI_CR1_SSM, NSS);
		703	MODIFY_REG(SPIx->CR2, SPI_CR2_SSOE, ((uint32_t)(NSS >> 16U)));
		704	}
		705
		706	/**
		707	* @brief Get NSS mode
		708	* @rmtoll CR1 SSM LL_SPI_GetNSSMode\n
		709	* @rmtoll CR2 SSOE LL_SPI_GetNSSMode
		710	* @param SPIx SPI Instance
		711	* @retval Returned value can be one of the following values:
		712	* @arg @ref LL_SPI_NSS_SOFT
		713	* @arg @ref LL_SPI_NSS_HARD_INPUT
		714	* @arg @ref LL_SPI_NSS_HARD_OUTPUT
		715	*/
		716	__STATIC_INLINE uint32_t LL_SPI_GetNSSMode(SPI_TypeDef *SPIx)
		717	{
		718	uint32_t Ssm = (READ_BIT(SPIx->CR1, SPI_CR1_SSM));
		719	uint32_t Ssoe = (READ_BIT(SPIx->CR2, SPI_CR2_SSOE) << 16U);
		720	return (Ssm \| Ssoe);
		721	}
		722
		723	/**
		724	* @}
		725	*/
		726
		727	/** @defgroup SPI_LL_EF_FLAG_Management FLAG Management
		728	* @{
		729	*/
		730
		731	/**
		732	* @brief Check if Rx buffer is not empty
		733	* @rmtoll SR RXNE LL_SPI_IsActiveFlag_RXNE
		734	* @param SPIx SPI Instance
		735	* @retval State of bit (1 or 0).
		736	*/
		737	__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_RXNE(SPI_TypeDef *SPIx)
		738	{
		739	return ((READ_BIT(SPIx->SR, SPI_SR_RXNE) == (SPI_SR_RXNE)) ? 1UL : 0UL);
		740	}
		741
		742	/**
		743	* @brief Check if Tx buffer is empty
		744	* @rmtoll SR TXE LL_SPI_IsActiveFlag_TXE
		745	* @param SPIx SPI Instance
		746	* @retval State of bit (1 or 0).
		747	*/
		748	__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_TXE(SPI_TypeDef *SPIx)
		749	{
		750	return ((READ_BIT(SPIx->SR, SPI_SR_TXE) == (SPI_SR_TXE)) ? 1UL : 0UL);
		751	}
		752
		753	/**
		754	* @brief Get CRC error flag
		755	* @rmtoll SR CRCERR LL_SPI_IsActiveFlag_CRCERR
		756	* @param SPIx SPI Instance
		757	* @retval State of bit (1 or 0).
		758	*/
		759	__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_CRCERR(SPI_TypeDef *SPIx)
		760	{
		761	return ((READ_BIT(SPIx->SR, SPI_SR_CRCERR) == (SPI_SR_CRCERR)) ? 1UL : 0UL);
		762	}
		763
		764	/**
		765	* @brief Get mode fault error flag
		766	* @rmtoll SR MODF LL_SPI_IsActiveFlag_MODF
		767	* @param SPIx SPI Instance
		768	* @retval State of bit (1 or 0).
		769	*/
		770	__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_MODF(SPI_TypeDef *SPIx)
		771	{
		772	return ((READ_BIT(SPIx->SR, SPI_SR_MODF) == (SPI_SR_MODF)) ? 1UL : 0UL);
		773	}
		774
		775	/**
		776	* @brief Get overrun error flag
		777	* @rmtoll SR OVR LL_SPI_IsActiveFlag_OVR
		778	* @param SPIx SPI Instance
		779	* @retval State of bit (1 or 0).
		780	*/
		781	__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_OVR(SPI_TypeDef *SPIx)
		782	{
		783	return ((READ_BIT(SPIx->SR, SPI_SR_OVR) == (SPI_SR_OVR)) ? 1UL : 0UL);
		784	}
		785
		786	/**
		787	* @brief Get busy flag
		788	* @note The BSY flag is cleared under any one of the following conditions:
		789	* -When the SPI is correctly disabled
		790	* -When a fault is detected in Master mode (MODF bit set to 1)
		791	* -In Master mode, when it finishes a data transmission and no new data is ready to be
		792	* sent
		793	* -In Slave mode, when the BSY flag is set to '0' for at least one SPI clock cycle between
		794	* each data transfer.
		795	* @rmtoll SR BSY LL_SPI_IsActiveFlag_BSY
		796	* @param SPIx SPI Instance
		797	* @retval State of bit (1 or 0).
		798	*/
		799	__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_BSY(SPI_TypeDef *SPIx)
		800	{
		801	return ((READ_BIT(SPIx->SR, SPI_SR_BSY) == (SPI_SR_BSY)) ? 1UL : 0UL);
		802	}
		803
		804	#if defined(SPI_CR2_FRF)
		805	/**
		806	* @brief Get frame format error flag
		807	* @rmtoll SR FRE LL_SPI_IsActiveFlag_FRE
		808	* @param SPIx SPI Instance
		809	* @retval State of bit (1 or 0).
		810	*/
		811	__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_FRE(SPI_TypeDef *SPIx)
		812	{
		813	return ((READ_BIT(SPIx->SR, SPI_SR_FRE) == (SPI_SR_FRE)) ? 1UL : 0UL);
		814	}
		815	#endif
		816
		817	/**
		818	* @brief Clear CRC error flag
		819	* @rmtoll SR CRCERR LL_SPI_ClearFlag_CRCERR
		820	* @param SPIx SPI Instance
		821	* @retval None
		822	*/
		823	__STATIC_INLINE void LL_SPI_ClearFlag_CRCERR(SPI_TypeDef *SPIx)
		824	{
		825	CLEAR_BIT(SPIx->SR, SPI_SR_CRCERR);
		826	}
		827
		828	/**
		829	* @brief Clear mode fault error flag
		830	* @note Clearing this flag is done by a read access to the SPIx_SR
		831	* register followed by a write access to the SPIx_CR1 register
		832	* @rmtoll SR MODF LL_SPI_ClearFlag_MODF
		833	* @param SPIx SPI Instance
		834	* @retval None
		835	*/
		836	__STATIC_INLINE void LL_SPI_ClearFlag_MODF(SPI_TypeDef *SPIx)
		837	{
		838	__IO uint32_t tmpreg_sr;
		839	tmpreg_sr = SPIx->SR;
		840	(void) tmpreg_sr;
		841	CLEAR_BIT(SPIx->CR1, SPI_CR1_SPE);
		842	}
		843
		844	/**
		845	* @brief Clear overrun error flag
		846	* @note Clearing this flag is done by a read access to the SPIx_DR
		847	* register followed by a read access to the SPIx_SR register
		848	* @rmtoll SR OVR LL_SPI_ClearFlag_OVR
		849	* @param SPIx SPI Instance
		850	* @retval None
		851	*/
		852	__STATIC_INLINE void LL_SPI_ClearFlag_OVR(SPI_TypeDef *SPIx)
		853	{
		854	__IO uint32_t tmpreg;
		855	tmpreg = SPIx->DR;
		856	(void) tmpreg;
		857	tmpreg = SPIx->SR;
		858	(void) tmpreg;
		859	}
		860
		861	/**
		862	* @brief Clear frame format error flag
		863	* @note Clearing this flag is done by reading SPIx_SR register
		864	* @rmtoll SR FRE LL_SPI_ClearFlag_FRE
		865	* @param SPIx SPI Instance
		866	* @retval None
		867	*/
		868	__STATIC_INLINE void LL_SPI_ClearFlag_FRE(SPI_TypeDef *SPIx)
		869	{
		870	__IO uint32_t tmpreg;
		871	tmpreg = SPIx->SR;
		872	(void) tmpreg;
		873	}
		874
		875	/**
		876	* @}
		877	*/
		878
		879	/** @defgroup SPI_LL_EF_IT_Management Interrupt Management
		880	* @{
		881	*/
		882
		883	/**
		884	* @brief Enable error interrupt
		885	* @note This bit controls the generation of an interrupt when an error condition occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode).
		886	* @rmtoll CR2 ERRIE LL_SPI_EnableIT_ERR
		887	* @param SPIx SPI Instance
		888	* @retval None
		889	*/
		890	__STATIC_INLINE void LL_SPI_EnableIT_ERR(SPI_TypeDef *SPIx)
		891	{
		892	SET_BIT(SPIx->CR2, SPI_CR2_ERRIE);
		893	}
		894
		895	/**
		896	* @brief Enable Rx buffer not empty interrupt
		897	* @rmtoll CR2 RXNEIE LL_SPI_EnableIT_RXNE
		898	* @param SPIx SPI Instance
		899	* @retval None
		900	*/
		901	__STATIC_INLINE void LL_SPI_EnableIT_RXNE(SPI_TypeDef *SPIx)
		902	{
		903	SET_BIT(SPIx->CR2, SPI_CR2_RXNEIE);
		904	}
		905
		906	/**
		907	* @brief Enable Tx buffer empty interrupt
		908	* @rmtoll CR2 TXEIE LL_SPI_EnableIT_TXE
		909	* @param SPIx SPI Instance
		910	* @retval None
		911	*/
		912	__STATIC_INLINE void LL_SPI_EnableIT_TXE(SPI_TypeDef *SPIx)
		913	{
		914	SET_BIT(SPIx->CR2, SPI_CR2_TXEIE);
		915	}
		916
		917	/**
		918	* @brief Disable error interrupt
		919	* @note This bit controls the generation of an interrupt when an error condition occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode).
		920	* @rmtoll CR2 ERRIE LL_SPI_DisableIT_ERR
		921	* @param SPIx SPI Instance
		922	* @retval None
		923	*/
		924	__STATIC_INLINE void LL_SPI_DisableIT_ERR(SPI_TypeDef *SPIx)
		925	{
		926	CLEAR_BIT(SPIx->CR2, SPI_CR2_ERRIE);
		927	}
		928
		929	/**
		930	* @brief Disable Rx buffer not empty interrupt
		931	* @rmtoll CR2 RXNEIE LL_SPI_DisableIT_RXNE
		932	* @param SPIx SPI Instance
		933	* @retval None
		934	*/
		935	__STATIC_INLINE void LL_SPI_DisableIT_RXNE(SPI_TypeDef *SPIx)
		936	{
		937	CLEAR_BIT(SPIx->CR2, SPI_CR2_RXNEIE);
		938	}
		939
		940	/**
		941	* @brief Disable Tx buffer empty interrupt
		942	* @rmtoll CR2 TXEIE LL_SPI_DisableIT_TXE
		943	* @param SPIx SPI Instance
		944	* @retval None
		945	*/
		946	__STATIC_INLINE void LL_SPI_DisableIT_TXE(SPI_TypeDef *SPIx)
		947	{
		948	CLEAR_BIT(SPIx->CR2, SPI_CR2_TXEIE);
		949	}
		950
		951	/**
		952	* @brief Check if error interrupt is enabled
		953	* @rmtoll CR2 ERRIE LL_SPI_IsEnabledIT_ERR
		954	* @param SPIx SPI Instance
		955	* @retval State of bit (1 or 0).
		956	*/
		957	__STATIC_INLINE uint32_t LL_SPI_IsEnabledIT_ERR(SPI_TypeDef *SPIx)
		958	{
		959	return ((READ_BIT(SPIx->CR2, SPI_CR2_ERRIE) == (SPI_CR2_ERRIE)) ? 1UL : 0UL);
		960	}
		961
		962	/**
		963	* @brief Check if Rx buffer not empty interrupt is enabled
		964	* @rmtoll CR2 RXNEIE LL_SPI_IsEnabledIT_RXNE
		965	* @param SPIx SPI Instance
		966	* @retval State of bit (1 or 0).
		967	*/
		968	__STATIC_INLINE uint32_t LL_SPI_IsEnabledIT_RXNE(SPI_TypeDef *SPIx)
		969	{
		970	return ((READ_BIT(SPIx->CR2, SPI_CR2_RXNEIE) == (SPI_CR2_RXNEIE)) ? 1UL : 0UL);
		971	}
		972
		973	/**
		974	* @brief Check if Tx buffer empty interrupt
		975	* @rmtoll CR2 TXEIE LL_SPI_IsEnabledIT_TXE
		976	* @param SPIx SPI Instance
		977	* @retval State of bit (1 or 0).
		978	*/
		979	__STATIC_INLINE uint32_t LL_SPI_IsEnabledIT_TXE(SPI_TypeDef *SPIx)
		980	{
		981	return ((READ_BIT(SPIx->CR2, SPI_CR2_TXEIE) == (SPI_CR2_TXEIE)) ? 1UL : 0UL);
		982	}
		983
		984	/**
		985	* @}
		986	*/
		987
		988	/** @defgroup SPI_LL_EF_DMA_Management DMA Management
		989	* @{
		990	*/
		991
		992	/**
		993	* @brief Enable DMA Rx
		994	* @rmtoll CR2 RXDMAEN LL_SPI_EnableDMAReq_RX
		995	* @param SPIx SPI Instance
		996	* @retval None
		997	*/
		998	__STATIC_INLINE void LL_SPI_EnableDMAReq_RX(SPI_TypeDef *SPIx)
		999	{
		1000	SET_BIT(SPIx->CR2, SPI_CR2_RXDMAEN);
		1001	}
		1002
		1003	/**
		1004	* @brief Disable DMA Rx
		1005	* @rmtoll CR2 RXDMAEN LL_SPI_DisableDMAReq_RX
		1006	* @param SPIx SPI Instance
		1007	* @retval None
		1008	*/
		1009	__STATIC_INLINE void LL_SPI_DisableDMAReq_RX(SPI_TypeDef *SPIx)
		1010	{
		1011	CLEAR_BIT(SPIx->CR2, SPI_CR2_RXDMAEN);
		1012	}
		1013
		1014	/**
		1015	* @brief Check if DMA Rx is enabled
		1016	* @rmtoll CR2 RXDMAEN LL_SPI_IsEnabledDMAReq_RX
		1017	* @param SPIx SPI Instance
		1018	* @retval State of bit (1 or 0).
		1019	*/
		1020	__STATIC_INLINE uint32_t LL_SPI_IsEnabledDMAReq_RX(SPI_TypeDef *SPIx)
		1021	{
		1022	return ((READ_BIT(SPIx->CR2, SPI_CR2_RXDMAEN) == (SPI_CR2_RXDMAEN)) ? 1UL : 0UL);
		1023	}
		1024
		1025	/**
		1026	* @brief Enable DMA Tx
		1027	* @rmtoll CR2 TXDMAEN LL_SPI_EnableDMAReq_TX
		1028	* @param SPIx SPI Instance
		1029	* @retval None
		1030	*/
		1031	__STATIC_INLINE void LL_SPI_EnableDMAReq_TX(SPI_TypeDef *SPIx)
		1032	{
		1033	SET_BIT(SPIx->CR2, SPI_CR2_TXDMAEN);
		1034	}
		1035
		1036	/**
		1037	* @brief Disable DMA Tx
		1038	* @rmtoll CR2 TXDMAEN LL_SPI_DisableDMAReq_TX
		1039	* @param SPIx SPI Instance
		1040	* @retval None
		1041	*/
		1042	__STATIC_INLINE void LL_SPI_DisableDMAReq_TX(SPI_TypeDef *SPIx)
		1043	{
		1044	CLEAR_BIT(SPIx->CR2, SPI_CR2_TXDMAEN);
		1045	}
		1046
		1047	/**
		1048	* @brief Check if DMA Tx is enabled
		1049	* @rmtoll CR2 TXDMAEN LL_SPI_IsEnabledDMAReq_TX
		1050	* @param SPIx SPI Instance
		1051	* @retval State of bit (1 or 0).
		1052	*/
		1053	__STATIC_INLINE uint32_t LL_SPI_IsEnabledDMAReq_TX(SPI_TypeDef *SPIx)
		1054	{
		1055	return ((READ_BIT(SPIx->CR2, SPI_CR2_TXDMAEN) == (SPI_CR2_TXDMAEN)) ? 1UL : 0UL);
		1056	}
		1057
		1058	/**
		1059	* @brief Get the data register address used for DMA transfer
		1060	* @rmtoll DR DR LL_SPI_DMA_GetRegAddr
		1061	* @param SPIx SPI Instance
		1062	* @retval Address of data register
		1063	*/
		1064	__STATIC_INLINE uint32_t LL_SPI_DMA_GetRegAddr(SPI_TypeDef *SPIx)
		1065	{
		1066	return (uint32_t) &(SPIx->DR);
		1067	}
		1068
		1069	/**
		1070	* @}
		1071	*/
		1072
		1073	/** @defgroup SPI_LL_EF_DATA_Management DATA Management
		1074	* @{
		1075	*/
		1076
		1077	/**
		1078	* @brief Read 8-Bits in the data register
		1079	* @rmtoll DR DR LL_SPI_ReceiveData8
		1080	* @param SPIx SPI Instance
		1081	* @retval RxData Value between Min_Data=0x00 and Max_Data=0xFF
		1082	*/
		1083	__STATIC_INLINE uint8_t LL_SPI_ReceiveData8(SPI_TypeDef *SPIx)
		1084	{
		1085	return (uint8_t)(READ_REG(SPIx->DR));
		1086	}
		1087
		1088	/**
		1089	* @brief Read 16-Bits in the data register
		1090	* @rmtoll DR DR LL_SPI_ReceiveData16
		1091	* @param SPIx SPI Instance
		1092	* @retval RxData Value between Min_Data=0x00 and Max_Data=0xFFFF
		1093	*/
		1094	__STATIC_INLINE uint16_t LL_SPI_ReceiveData16(SPI_TypeDef *SPIx)
		1095	{
		1096	return (uint16_t)(READ_REG(SPIx->DR));
		1097	}
		1098
		1099	/**
		1100	* @brief Write 8-Bits in the data register
		1101	* @rmtoll DR DR LL_SPI_TransmitData8
		1102	* @param SPIx SPI Instance
		1103	* @param TxData Value between Min_Data=0x00 and Max_Data=0xFF
		1104	* @retval None
		1105	*/
		1106	__STATIC_INLINE void LL_SPI_TransmitData8(SPI_TypeDef *SPIx, uint8_t TxData)
		1107	{
		1108	#if defined (__GNUC__)
		1109	__IO uint8_t spidr = ((__IO uint8_t )&SPIx->DR);
		1110	*spidr = TxData;
		1111	#else
		1112	((__IO uint8_t )&SPIx->DR) = TxData;
		1113	#endif /* __GNUC__ */
		1114	}
		1115
		1116	/**
		1117	* @brief Write 16-Bits in the data register
		1118	* @rmtoll DR DR LL_SPI_TransmitData16
		1119	* @param SPIx SPI Instance
		1120	* @param TxData Value between Min_Data=0x00 and Max_Data=0xFFFF
		1121	* @retval None
		1122	*/
		1123	__STATIC_INLINE void LL_SPI_TransmitData16(SPI_TypeDef *SPIx, uint16_t TxData)
		1124	{
		1125	#if defined (__GNUC__)
		1126	__IO uint16_t spidr = ((__IO uint16_t )&SPIx->DR);
		1127	*spidr = TxData;
		1128	#else
		1129	SPIx->DR = TxData;
		1130	#endif /* __GNUC__ */
		1131	}
		1132
		1133	/**
		1134	* @}
		1135	*/
		1136	#if defined(USE_FULL_LL_DRIVER)
		1137	/** @defgroup SPI_LL_EF_Init Initialization and de-initialization functions
		1138	* @{
		1139	*/
		1140
		1141	ErrorStatus LL_SPI_DeInit(SPI_TypeDef *SPIx);
		1142	ErrorStatus LL_SPI_Init(SPI_TypeDef SPIx, LL_SPI_InitTypeDef SPI_InitStruct);
		1143	void LL_SPI_StructInit(LL_SPI_InitTypeDef *SPI_InitStruct);
		1144
		1145	/**
		1146	* @}
		1147	*/
		1148	#endif /* USE_FULL_LL_DRIVER */
		1149	/**
		1150	* @}
		1151	*/
		1152
		1153	/**
		1154	* @}
		1155	*/
		1156
		1157	#if defined(SPI_I2S_SUPPORT)
		1158	/** @defgroup I2S_LL I2S
		1159	* @{
		1160	*/
		1161
		1162	/* Private variables ---------------------------------------------------------*/
		1163	/* Private constants ---------------------------------------------------------*/
		1164	/* Private macros ------------------------------------------------------------*/
		1165
		1166	/* Exported types ------------------------------------------------------------*/
		1167	#if defined(USE_FULL_LL_DRIVER)
		1168	/** @defgroup I2S_LL_ES_INIT I2S Exported Init structure
		1169	* @{
		1170	*/
		1171
		1172	/**
		1173	* @brief I2S Init structure definition
		1174	*/
		1175
		1176	typedef struct
		1177	{
		1178	uint32_t Mode; /*!< Specifies the I2S operating mode.
		1179	This parameter can be a value of @ref I2S_LL_EC_MODE
		1180
		1181	This feature can be modified afterwards using unitary function @ref LL_I2S_SetTransferMode().*/
		1182
		1183	uint32_t Standard; /*!< Specifies the standard used for the I2S communication.
		1184	This parameter can be a value of @ref I2S_LL_EC_STANDARD
		1185
		1186	This feature can be modified afterwards using unitary function @ref LL_I2S_SetStandard().*/
		1187
		1188
		1189	uint32_t DataFormat; /*!< Specifies the data format for the I2S communication.
		1190	This parameter can be a value of @ref I2S_LL_EC_DATA_FORMAT
		1191
		1192	This feature can be modified afterwards using unitary function @ref LL_I2S_SetDataFormat().*/
		1193
		1194
		1195	uint32_t MCLKOutput; /*!< Specifies whether the I2S MCLK output is enabled or not.
		1196	This parameter can be a value of @ref I2S_LL_EC_MCLK_OUTPUT
		1197
		1198	This feature can be modified afterwards using unitary functions @ref LL_I2S_EnableMasterClock() or @ref LL_I2S_DisableMasterClock.*/
		1199
		1200
		1201	uint32_t AudioFreq; /*!< Specifies the frequency selected for the I2S communication.
		1202	This parameter can be a value of @ref I2S_LL_EC_AUDIO_FREQ
		1203
		1204	Audio Frequency can be modified afterwards using Reference manual formulas to calculate Prescaler Linear, Parity
		1205	and unitary functions @ref LL_I2S_SetPrescalerLinear() and @ref LL_I2S_SetPrescalerParity() to set it.*/
		1206
		1207
		1208	uint32_t ClockPolarity; /*!< Specifies the idle state of the I2S clock.
		1209	This parameter can be a value of @ref I2S_LL_EC_POLARITY
		1210
		1211	This feature can be modified afterwards using unitary function @ref LL_I2S_SetClockPolarity().*/
		1212
		1213	} LL_I2S_InitTypeDef;
		1214
		1215	/**
		1216	* @}
		1217	*/
		1218	#endif /USE_FULL_LL_DRIVER/
		1219
		1220	/* Exported constants --------------------------------------------------------*/
		1221	/** @defgroup I2S_LL_Exported_Constants I2S Exported Constants
		1222	* @{
		1223	*/
		1224
		1225	/** @defgroup I2S_LL_EC_GET_FLAG Get Flags Defines
		1226	* @brief Flags defines which can be used with LL_I2S_ReadReg function
		1227	* @{
		1228	*/
		1229	#define LL_I2S_SR_RXNE LL_SPI_SR_RXNE /!< Rx buffer not empty flag /
		1230	#define LL_I2S_SR_TXE LL_SPI_SR_TXE /!< Tx buffer empty flag /
		1231	#define LL_I2S_SR_BSY LL_SPI_SR_BSY /!< Busy flag /
		1232	#define LL_I2S_SR_UDR SPI_SR_UDR /!< Underrun flag /
		1233	#define LL_I2S_SR_OVR LL_SPI_SR_OVR /!< Overrun flag /
		1234	#define LL_I2S_SR_FRE LL_SPI_SR_FRE /!< TI mode frame format error flag /
		1235	/**
		1236	* @}
		1237	*/
		1238
		1239	/** @defgroup SPI_LL_EC_IT IT Defines
		1240	* @brief IT defines which can be used with LL_SPI_ReadReg and LL_SPI_WriteReg functions
		1241	* @{
		1242	*/
		1243	#define LL_I2S_CR2_RXNEIE LL_SPI_CR2_RXNEIE /!< Rx buffer not empty interrupt enable /
		1244	#define LL_I2S_CR2_TXEIE LL_SPI_CR2_TXEIE /!< Tx buffer empty interrupt enable /
		1245	#define LL_I2S_CR2_ERRIE LL_SPI_CR2_ERRIE /!< Error interrupt enable /
		1246	/**
		1247	* @}
		1248	*/
		1249
		1250	/** @defgroup I2S_LL_EC_DATA_FORMAT Data format
		1251	* @{
		1252	*/
		1253	#define LL_I2S_DATAFORMAT_16B 0x00000000U /!< Data length 16 bits, Channel length 16bit /
		1254	#define LL_I2S_DATAFORMAT_16B_EXTENDED (SPI_I2SCFGR_CHLEN) /!< Data length 16 bits, Channel length 32bit /
		1255	#define LL_I2S_DATAFORMAT_24B (SPI_I2SCFGR_CHLEN \| SPI_I2SCFGR_DATLEN_0) /!< Data length 24 bits, Channel length 32bit /
		1256	#define LL_I2S_DATAFORMAT_32B (SPI_I2SCFGR_CHLEN \| SPI_I2SCFGR_DATLEN_1) /!< Data length 16 bits, Channel length 32bit /
		1257	/**
		1258	* @}
		1259	*/
		1260
		1261	/** @defgroup I2S_LL_EC_POLARITY Clock Polarity
		1262	* @{
		1263	*/
		1264	#define LL_I2S_POLARITY_LOW 0x00000000U /!< Clock steady state is low level /
		1265	#define LL_I2S_POLARITY_HIGH (SPI_I2SCFGR_CKPOL) /!< Clock steady state is high level /
		1266	/**
		1267	* @}
		1268	*/
		1269
		1270	/** @defgroup I2S_LL_EC_STANDARD I2s Standard
		1271	* @{
		1272	*/
		1273	#define LL_I2S_STANDARD_PHILIPS 0x00000000U /!< I2S standard philips /
		1274	#define LL_I2S_STANDARD_MSB (SPI_I2SCFGR_I2SSTD_0) /!< MSB justified standard (left justified) /
		1275	#define LL_I2S_STANDARD_LSB (SPI_I2SCFGR_I2SSTD_1) /!< LSB justified standard (right justified) /
		1276	#define LL_I2S_STANDARD_PCM_SHORT (SPI_I2SCFGR_I2SSTD_0 \| SPI_I2SCFGR_I2SSTD_1) /!< PCM standard, short frame synchronization /
		1277	#define LL_I2S_STANDARD_PCM_LONG (SPI_I2SCFGR_I2SSTD_0 \| SPI_I2SCFGR_I2SSTD_1 \| SPI_I2SCFGR_PCMSYNC) /!< PCM standard, long frame synchronization /
		1278	/**
		1279	* @}
		1280	*/
		1281
		1282	/** @defgroup I2S_LL_EC_MODE Operation Mode
		1283	* @{
		1284	*/
		1285	#define LL_I2S_MODE_SLAVE_TX 0x00000000U /!< Slave Tx configuration /
		1286	#define LL_I2S_MODE_SLAVE_RX (SPI_I2SCFGR_I2SCFG_0) /!< Slave Rx configuration /
		1287	#define LL_I2S_MODE_MASTER_TX (SPI_I2SCFGR_I2SCFG_1) /!< Master Tx configuration /
		1288	#define LL_I2S_MODE_MASTER_RX (SPI_I2SCFGR_I2SCFG_0 \| SPI_I2SCFGR_I2SCFG_1) /!< Master Rx configuration /
		1289	/**
		1290	* @}
		1291	*/
		1292
		1293	/** @defgroup I2S_LL_EC_PRESCALER_FACTOR Prescaler Factor
		1294	* @{
		1295	*/
		1296	#define LL_I2S_PRESCALER_PARITY_EVEN 0x00000000U /!< Odd factor: Real divider value is = I2SDIV 2 */
		1297	#define LL_I2S_PRESCALER_PARITY_ODD (SPI_I2SPR_ODD >> 8U) /!< Odd factor: Real divider value is = (I2SDIV 2)+1 */
		1298	/**
		1299	* @}
		1300	*/
		1301
		1302	#if defined(USE_FULL_LL_DRIVER)
		1303
		1304	/** @defgroup I2S_LL_EC_MCLK_OUTPUT MCLK Output
		1305	* @{
		1306	*/
		1307	#define LL_I2S_MCLK_OUTPUT_DISABLE 0x00000000U /!< Master clock output is disabled /
		1308	#define LL_I2S_MCLK_OUTPUT_ENABLE (SPI_I2SPR_MCKOE) /!< Master clock output is enabled /
		1309	/**
		1310	* @}
		1311	*/
		1312
		1313	/** @defgroup I2S_LL_EC_AUDIO_FREQ Audio Frequency
		1314	* @{
		1315	*/
		1316
		1317	#define LL_I2S_AUDIOFREQ_192K 192000U /!< Audio Frequency configuration 192000 Hz /
		1318	#define LL_I2S_AUDIOFREQ_96K 96000U /!< Audio Frequency configuration 96000 Hz /
		1319	#define LL_I2S_AUDIOFREQ_48K 48000U /!< Audio Frequency configuration 48000 Hz /
		1320	#define LL_I2S_AUDIOFREQ_44K 44100U /!< Audio Frequency configuration 44100 Hz /
		1321	#define LL_I2S_AUDIOFREQ_32K 32000U /!< Audio Frequency configuration 32000 Hz /
		1322	#define LL_I2S_AUDIOFREQ_22K 22050U /!< Audio Frequency configuration 22050 Hz /
		1323	#define LL_I2S_AUDIOFREQ_16K 16000U /!< Audio Frequency configuration 16000 Hz /
		1324	#define LL_I2S_AUDIOFREQ_11K 11025U /!< Audio Frequency configuration 11025 Hz /
		1325	#define LL_I2S_AUDIOFREQ_8K 8000U /!< Audio Frequency configuration 8000 Hz /
		1326	#define LL_I2S_AUDIOFREQ_DEFAULT 2U /!< Audio Freq not specified. Register I2SDIV = 2 /
		1327	/**
		1328	* @}
		1329	*/
		1330	#endif /* USE_FULL_LL_DRIVER */
		1331
		1332	/**
		1333	* @}
		1334	*/
		1335
		1336	/* Exported macro ------------------------------------------------------------*/
		1337	/** @defgroup I2S_LL_Exported_Macros I2S Exported Macros
		1338	* @{
		1339	*/
		1340
		1341	/** @defgroup I2S_LL_EM_WRITE_READ Common Write and read registers Macros
		1342	* @{
		1343	*/
		1344
		1345	/**
		1346	* @brief Write a value in I2S register
		1347	* @param __INSTANCE__ I2S Instance
		1348	* @param __REG__ Register to be written
		1349	* @param __VALUE__ Value to be written in the register
		1350	* @retval None
		1351	*/
		1352	#define LL_I2S_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
		1353
		1354	/**
		1355	* @brief Read a value in I2S register
		1356	* @param __INSTANCE__ I2S Instance
		1357	* @param __REG__ Register to be read
		1358	* @retval Register value
		1359	*/
		1360	#define LL_I2S_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
		1361	/**
		1362	* @}
		1363	*/
		1364
		1365	/**
		1366	* @}
		1367	*/
		1368
		1369
		1370	/* Exported functions --------------------------------------------------------*/
		1371
		1372	/** @defgroup I2S_LL_Exported_Functions I2S Exported Functions
		1373	* @{
		1374	*/
		1375
		1376	/** @defgroup I2S_LL_EF_Configuration Configuration
		1377	* @{
		1378	*/
		1379
		1380	/**
		1381	* @brief Select I2S mode and Enable I2S peripheral
		1382	* @rmtoll I2SCFGR I2SMOD LL_I2S_Enable\n
		1383	* I2SCFGR I2SE LL_I2S_Enable
		1384	* @param SPIx SPI Instance
		1385	* @retval None
		1386	*/
		1387	__STATIC_INLINE void LL_I2S_Enable(SPI_TypeDef *SPIx)
		1388	{
		1389	SET_BIT(SPIx->I2SCFGR, SPI_I2SCFGR_I2SMOD \| SPI_I2SCFGR_I2SE);
		1390	}
		1391
		1392	/**
		1393	* @brief Disable I2S peripheral
		1394	* @rmtoll I2SCFGR I2SE LL_I2S_Disable
		1395	* @param SPIx SPI Instance
		1396	* @retval None
		1397	*/
		1398	__STATIC_INLINE void LL_I2S_Disable(SPI_TypeDef *SPIx)
		1399	{
		1400	CLEAR_BIT(SPIx->I2SCFGR, SPI_I2SCFGR_I2SMOD \| SPI_I2SCFGR_I2SE);
		1401	}
		1402
		1403	/**
		1404	* @brief Check if I2S peripheral is enabled
		1405	* @rmtoll I2SCFGR I2SE LL_I2S_IsEnabled
		1406	* @param SPIx SPI Instance
		1407	* @retval State of bit (1 or 0).
		1408	*/
		1409	__STATIC_INLINE uint32_t LL_I2S_IsEnabled(SPI_TypeDef *SPIx)
		1410	{
		1411	return ((READ_BIT(SPIx->I2SCFGR, SPI_I2SCFGR_I2SE) == (SPI_I2SCFGR_I2SE)) ? 1UL : 0UL);
		1412	}
		1413
		1414	/**
		1415	* @brief Set I2S data frame length
		1416	* @rmtoll I2SCFGR DATLEN LL_I2S_SetDataFormat\n
		1417	* I2SCFGR CHLEN LL_I2S_SetDataFormat
		1418	* @param SPIx SPI Instance
		1419	* @param DataFormat This parameter can be one of the following values:
		1420	* @arg @ref LL_I2S_DATAFORMAT_16B
		1421	* @arg @ref LL_I2S_DATAFORMAT_16B_EXTENDED
		1422	* @arg @ref LL_I2S_DATAFORMAT_24B
		1423	* @arg @ref LL_I2S_DATAFORMAT_32B
		1424	* @retval None
		1425	*/
		1426	__STATIC_INLINE void LL_I2S_SetDataFormat(SPI_TypeDef *SPIx, uint32_t DataFormat)
		1427	{
		1428	MODIFY_REG(SPIx->I2SCFGR, SPI_I2SCFGR_DATLEN \| SPI_I2SCFGR_CHLEN, DataFormat);
		1429	}
		1430
		1431	/**
		1432	* @brief Get I2S data frame length
		1433	* @rmtoll I2SCFGR DATLEN LL_I2S_GetDataFormat\n
		1434	* I2SCFGR CHLEN LL_I2S_GetDataFormat
		1435	* @param SPIx SPI Instance
		1436	* @retval Returned value can be one of the following values:
		1437	* @arg @ref LL_I2S_DATAFORMAT_16B
		1438	* @arg @ref LL_I2S_DATAFORMAT_16B_EXTENDED
		1439	* @arg @ref LL_I2S_DATAFORMAT_24B
		1440	* @arg @ref LL_I2S_DATAFORMAT_32B
		1441	*/
		1442	__STATIC_INLINE uint32_t LL_I2S_GetDataFormat(SPI_TypeDef *SPIx)
		1443	{
		1444	return (uint32_t)(READ_BIT(SPIx->I2SCFGR, SPI_I2SCFGR_DATLEN \| SPI_I2SCFGR_CHLEN));
		1445	}
		1446
		1447	/**
		1448	* @brief Set I2S clock polarity
		1449	* @rmtoll I2SCFGR CKPOL LL_I2S_SetClockPolarity
		1450	* @param SPIx SPI Instance
		1451	* @param ClockPolarity This parameter can be one of the following values:
		1452	* @arg @ref LL_I2S_POLARITY_LOW
		1453	* @arg @ref LL_I2S_POLARITY_HIGH
		1454	* @retval None
		1455	*/
		1456	__STATIC_INLINE void LL_I2S_SetClockPolarity(SPI_TypeDef *SPIx, uint32_t ClockPolarity)
		1457	{
		1458	SET_BIT(SPIx->I2SCFGR, ClockPolarity);
		1459	}
		1460
		1461	/**
		1462	* @brief Get I2S clock polarity
		1463	* @rmtoll I2SCFGR CKPOL LL_I2S_GetClockPolarity
		1464	* @param SPIx SPI Instance
		1465	* @retval Returned value can be one of the following values:
		1466	* @arg @ref LL_I2S_POLARITY_LOW
		1467	* @arg @ref LL_I2S_POLARITY_HIGH
		1468	*/
		1469	__STATIC_INLINE uint32_t LL_I2S_GetClockPolarity(SPI_TypeDef *SPIx)
		1470	{
		1471	return (uint32_t)(READ_BIT(SPIx->I2SCFGR, SPI_I2SCFGR_CKPOL));
		1472	}
		1473
		1474	/**
		1475	* @brief Set I2S standard protocol
		1476	* @rmtoll I2SCFGR I2SSTD LL_I2S_SetStandard\n
		1477	* I2SCFGR PCMSYNC LL_I2S_SetStandard
		1478	* @param SPIx SPI Instance
		1479	* @param Standard This parameter can be one of the following values:
		1480	* @arg @ref LL_I2S_STANDARD_PHILIPS
		1481	* @arg @ref LL_I2S_STANDARD_MSB
		1482	* @arg @ref LL_I2S_STANDARD_LSB
		1483	* @arg @ref LL_I2S_STANDARD_PCM_SHORT
		1484	* @arg @ref LL_I2S_STANDARD_PCM_LONG
		1485	* @retval None
		1486	*/
		1487	__STATIC_INLINE void LL_I2S_SetStandard(SPI_TypeDef *SPIx, uint32_t Standard)
		1488	{
		1489	MODIFY_REG(SPIx->I2SCFGR, SPI_I2SCFGR_I2SSTD \| SPI_I2SCFGR_PCMSYNC, Standard);
		1490	}
		1491
		1492	/**
		1493	* @brief Get I2S standard protocol
		1494	* @rmtoll I2SCFGR I2SSTD LL_I2S_GetStandard\n
		1495	* I2SCFGR PCMSYNC LL_I2S_GetStandard
		1496	* @param SPIx SPI Instance
		1497	* @retval Returned value can be one of the following values:
		1498	* @arg @ref LL_I2S_STANDARD_PHILIPS
		1499	* @arg @ref LL_I2S_STANDARD_MSB
		1500	* @arg @ref LL_I2S_STANDARD_LSB
		1501	* @arg @ref LL_I2S_STANDARD_PCM_SHORT
		1502	* @arg @ref LL_I2S_STANDARD_PCM_LONG
		1503	*/
		1504	__STATIC_INLINE uint32_t LL_I2S_GetStandard(SPI_TypeDef *SPIx)
		1505	{
		1506	return (uint32_t)(READ_BIT(SPIx->I2SCFGR, SPI_I2SCFGR_I2SSTD \| SPI_I2SCFGR_PCMSYNC));
		1507	}
		1508
		1509	/**
		1510	* @brief Set I2S transfer mode
		1511	* @rmtoll I2SCFGR I2SCFG LL_I2S_SetTransferMode
		1512	* @param SPIx SPI Instance
		1513	* @param Mode This parameter can be one of the following values:
		1514	* @arg @ref LL_I2S_MODE_SLAVE_TX
		1515	* @arg @ref LL_I2S_MODE_SLAVE_RX
		1516	* @arg @ref LL_I2S_MODE_MASTER_TX
		1517	* @arg @ref LL_I2S_MODE_MASTER_RX
		1518	* @retval None
		1519	*/
		1520	__STATIC_INLINE void LL_I2S_SetTransferMode(SPI_TypeDef *SPIx, uint32_t Mode)
		1521	{
		1522	MODIFY_REG(SPIx->I2SCFGR, SPI_I2SCFGR_I2SCFG, Mode);
		1523	}
		1524
		1525	/**
		1526	* @brief Get I2S transfer mode
		1527	* @rmtoll I2SCFGR I2SCFG LL_I2S_GetTransferMode
		1528	* @param SPIx SPI Instance
		1529	* @retval Returned value can be one of the following values:
		1530	* @arg @ref LL_I2S_MODE_SLAVE_TX
		1531	* @arg @ref LL_I2S_MODE_SLAVE_RX
		1532	* @arg @ref LL_I2S_MODE_MASTER_TX
		1533	* @arg @ref LL_I2S_MODE_MASTER_RX
		1534	*/
		1535	__STATIC_INLINE uint32_t LL_I2S_GetTransferMode(SPI_TypeDef *SPIx)
		1536	{
		1537	return (uint32_t)(READ_BIT(SPIx->I2SCFGR, SPI_I2SCFGR_I2SCFG));
		1538	}
		1539
		1540	/**
		1541	* @brief Set I2S linear prescaler
		1542	* @rmtoll I2SPR I2SDIV LL_I2S_SetPrescalerLinear
		1543	* @param SPIx SPI Instance
		1544	* @param PrescalerLinear Value between Min_Data=0x02 and Max_Data=0xFF
		1545	* @retval None
		1546	*/
		1547	__STATIC_INLINE void LL_I2S_SetPrescalerLinear(SPI_TypeDef *SPIx, uint8_t PrescalerLinear)
		1548	{
		1549	MODIFY_REG(SPIx->I2SPR, SPI_I2SPR_I2SDIV, PrescalerLinear);
		1550	}
		1551
		1552	/**
		1553	* @brief Get I2S linear prescaler
		1554	* @rmtoll I2SPR I2SDIV LL_I2S_GetPrescalerLinear
		1555	* @param SPIx SPI Instance
		1556	* @retval PrescalerLinear Value between Min_Data=0x02 and Max_Data=0xFF
		1557	*/
		1558	__STATIC_INLINE uint32_t LL_I2S_GetPrescalerLinear(SPI_TypeDef *SPIx)
		1559	{
		1560	return (uint32_t)(READ_BIT(SPIx->I2SPR, SPI_I2SPR_I2SDIV));
		1561	}
		1562
		1563	/**
		1564	* @brief Set I2S parity prescaler
		1565	* @rmtoll I2SPR ODD LL_I2S_SetPrescalerParity
		1566	* @param SPIx SPI Instance
		1567	* @param PrescalerParity This parameter can be one of the following values:
		1568	* @arg @ref LL_I2S_PRESCALER_PARITY_EVEN
		1569	* @arg @ref LL_I2S_PRESCALER_PARITY_ODD
		1570	* @retval None
		1571	*/
		1572	__STATIC_INLINE void LL_I2S_SetPrescalerParity(SPI_TypeDef *SPIx, uint32_t PrescalerParity)
		1573	{
		1574	MODIFY_REG(SPIx->I2SPR, SPI_I2SPR_ODD, PrescalerParity << 8U);
		1575	}
		1576
		1577	/**
		1578	* @brief Get I2S parity prescaler
		1579	* @rmtoll I2SPR ODD LL_I2S_GetPrescalerParity
		1580	* @param SPIx SPI Instance
		1581	* @retval Returned value can be one of the following values:
		1582	* @arg @ref LL_I2S_PRESCALER_PARITY_EVEN
		1583	* @arg @ref LL_I2S_PRESCALER_PARITY_ODD
		1584	*/
		1585	__STATIC_INLINE uint32_t LL_I2S_GetPrescalerParity(SPI_TypeDef *SPIx)
		1586	{
		1587	return (uint32_t)(READ_BIT(SPIx->I2SPR, SPI_I2SPR_ODD) >> 8U);
		1588	}
		1589
		1590	/**
		1591	* @brief Enable the master clock output (Pin MCK)
		1592	* @rmtoll I2SPR MCKOE LL_I2S_EnableMasterClock
		1593	* @param SPIx SPI Instance
		1594	* @retval None
		1595	*/
		1596	__STATIC_INLINE void LL_I2S_EnableMasterClock(SPI_TypeDef *SPIx)
		1597	{
		1598	SET_BIT(SPIx->I2SPR, SPI_I2SPR_MCKOE);
		1599	}
		1600
		1601	/**
		1602	* @brief Disable the master clock output (Pin MCK)
		1603	* @rmtoll I2SPR MCKOE LL_I2S_DisableMasterClock
		1604	* @param SPIx SPI Instance
		1605	* @retval None
		1606	*/
		1607	__STATIC_INLINE void LL_I2S_DisableMasterClock(SPI_TypeDef *SPIx)
		1608	{
		1609	CLEAR_BIT(SPIx->I2SPR, SPI_I2SPR_MCKOE);
		1610	}
		1611
		1612	/**
		1613	* @brief Check if the master clock output (Pin MCK) is enabled
		1614	* @rmtoll I2SPR MCKOE LL_I2S_IsEnabledMasterClock
		1615	* @param SPIx SPI Instance
		1616	* @retval State of bit (1 or 0).
		1617	*/
		1618	__STATIC_INLINE uint32_t LL_I2S_IsEnabledMasterClock(SPI_TypeDef *SPIx)
		1619	{
		1620	return ((READ_BIT(SPIx->I2SPR, SPI_I2SPR_MCKOE) == (SPI_I2SPR_MCKOE)) ? 1UL : 0UL);
		1621	}
		1622
		1623	/**
		1624	* @}
		1625	*/
		1626
		1627	/** @defgroup I2S_LL_EF_FLAG FLAG Management
		1628	* @{
		1629	*/
		1630
		1631	/**
		1632	* @brief Check if Rx buffer is not empty
		1633	* @rmtoll SR RXNE LL_I2S_IsActiveFlag_RXNE
		1634	* @param SPIx SPI Instance
		1635	* @retval State of bit (1 or 0).
		1636	*/
		1637	__STATIC_INLINE uint32_t LL_I2S_IsActiveFlag_RXNE(SPI_TypeDef *SPIx)
		1638	{
		1639	return LL_SPI_IsActiveFlag_RXNE(SPIx);
		1640	}
		1641
		1642	/**
		1643	* @brief Check if Tx buffer is empty
		1644	* @rmtoll SR TXE LL_I2S_IsActiveFlag_TXE
		1645	* @param SPIx SPI Instance
		1646	* @retval State of bit (1 or 0).
		1647	*/
		1648	__STATIC_INLINE uint32_t LL_I2S_IsActiveFlag_TXE(SPI_TypeDef *SPIx)
		1649	{
		1650	return LL_SPI_IsActiveFlag_TXE(SPIx);
		1651	}
		1652
		1653	/**
		1654	* @brief Get busy flag
		1655	* @rmtoll SR BSY LL_I2S_IsActiveFlag_BSY
		1656	* @param SPIx SPI Instance
		1657	* @retval State of bit (1 or 0).
		1658	*/
		1659	__STATIC_INLINE uint32_t LL_I2S_IsActiveFlag_BSY(SPI_TypeDef *SPIx)
		1660	{
		1661	return LL_SPI_IsActiveFlag_BSY(SPIx);
		1662	}
		1663
		1664	/**
		1665	* @brief Get overrun error flag
		1666	* @rmtoll SR OVR LL_I2S_IsActiveFlag_OVR
		1667	* @param SPIx SPI Instance
		1668	* @retval State of bit (1 or 0).
		1669	*/
		1670	__STATIC_INLINE uint32_t LL_I2S_IsActiveFlag_OVR(SPI_TypeDef *SPIx)
		1671	{
		1672	return LL_SPI_IsActiveFlag_OVR(SPIx);
		1673	}
		1674
		1675	/**
		1676	* @brief Get underrun error flag
		1677	* @rmtoll SR UDR LL_I2S_IsActiveFlag_UDR
		1678	* @param SPIx SPI Instance
		1679	* @retval State of bit (1 or 0).
		1680	*/
		1681	__STATIC_INLINE uint32_t LL_I2S_IsActiveFlag_UDR(SPI_TypeDef *SPIx)
		1682	{
		1683	return ((READ_BIT(SPIx->SR, SPI_SR_UDR) == (SPI_SR_UDR)) ? 1UL : 0UL);
		1684	}
		1685
		1686	#if defined(SPI_CR2_FRF)
		1687	/**
		1688	* @brief Get frame format error flag
		1689	* @rmtoll SR FRE LL_I2S_IsActiveFlag_FRE
		1690	* @param SPIx SPI Instance
		1691	* @retval State of bit (1 or 0).
		1692	*/
		1693	__STATIC_INLINE uint32_t LL_I2S_IsActiveFlag_FRE(SPI_TypeDef *SPIx)
		1694	{
		1695	return LL_SPI_IsActiveFlag_FRE(SPIx);
		1696	}
		1697	#endif
		1698
		1699	/**
		1700	* @brief Get channel side flag.
		1701	* @note 0: Channel Left has to be transmitted or has been received\n
		1702	* 1: Channel Right has to be transmitted or has been received\n
		1703	* It has no significance in PCM mode.
		1704	* @rmtoll SR CHSIDE LL_I2S_IsActiveFlag_CHSIDE
		1705	* @param SPIx SPI Instance
		1706	* @retval State of bit (1 or 0).
		1707	*/
		1708	__STATIC_INLINE uint32_t LL_I2S_IsActiveFlag_CHSIDE(SPI_TypeDef *SPIx)
		1709	{
		1710	return ((READ_BIT(SPIx->SR, SPI_SR_CHSIDE) == (SPI_SR_CHSIDE)) ? 1UL : 0UL);
		1711	}
		1712
		1713	/**
		1714	* @brief Clear overrun error flag
		1715	* @rmtoll SR OVR LL_I2S_ClearFlag_OVR
		1716	* @param SPIx SPI Instance
		1717	* @retval None
		1718	*/
		1719	__STATIC_INLINE void LL_I2S_ClearFlag_OVR(SPI_TypeDef *SPIx)
		1720	{
		1721	LL_SPI_ClearFlag_OVR(SPIx);
		1722	}
		1723
		1724	/**
		1725	* @brief Clear underrun error flag
		1726	* @rmtoll SR UDR LL_I2S_ClearFlag_UDR
		1727	* @param SPIx SPI Instance
		1728	* @retval None
		1729	*/
		1730	__STATIC_INLINE void LL_I2S_ClearFlag_UDR(SPI_TypeDef *SPIx)
		1731	{
		1732	__IO uint32_t tmpreg;
		1733	tmpreg = SPIx->SR;
		1734	(void)tmpreg;
		1735	}
		1736
		1737	/**
		1738	* @brief Clear frame format error flag
		1739	* @rmtoll SR FRE LL_I2S_ClearFlag_FRE
		1740	* @param SPIx SPI Instance
		1741	* @retval None
		1742	*/
		1743	__STATIC_INLINE void LL_I2S_ClearFlag_FRE(SPI_TypeDef *SPIx)
		1744	{
		1745	LL_SPI_ClearFlag_FRE(SPIx);
		1746	}
		1747
		1748	/**
		1749	* @}
		1750	*/
		1751
		1752	/** @defgroup I2S_LL_EF_IT Interrupt Management
		1753	* @{
		1754	*/
		1755
		1756	/**
		1757	* @brief Enable error IT
		1758	* @note This bit controls the generation of an interrupt when an error condition occurs (OVR, UDR and FRE in I2S mode).
		1759	* @rmtoll CR2 ERRIE LL_I2S_EnableIT_ERR
		1760	* @param SPIx SPI Instance
		1761	* @retval None
		1762	*/
		1763	__STATIC_INLINE void LL_I2S_EnableIT_ERR(SPI_TypeDef *SPIx)
		1764	{
		1765	LL_SPI_EnableIT_ERR(SPIx);
		1766	}
		1767
		1768	/**
		1769	* @brief Enable Rx buffer not empty IT
		1770	* @rmtoll CR2 RXNEIE LL_I2S_EnableIT_RXNE
		1771	* @param SPIx SPI Instance
		1772	* @retval None
		1773	*/
		1774	__STATIC_INLINE void LL_I2S_EnableIT_RXNE(SPI_TypeDef *SPIx)
		1775	{
		1776	LL_SPI_EnableIT_RXNE(SPIx);
		1777	}
		1778
		1779	/**
		1780	* @brief Enable Tx buffer empty IT
		1781	* @rmtoll CR2 TXEIE LL_I2S_EnableIT_TXE
		1782	* @param SPIx SPI Instance
		1783	* @retval None
		1784	*/
		1785	__STATIC_INLINE void LL_I2S_EnableIT_TXE(SPI_TypeDef *SPIx)
		1786	{
		1787	LL_SPI_EnableIT_TXE(SPIx);
		1788	}
		1789
		1790	/**
		1791	* @brief Disable error IT
		1792	* @note This bit controls the generation of an interrupt when an error condition occurs (OVR, UDR and FRE in I2S mode).
		1793	* @rmtoll CR2 ERRIE LL_I2S_DisableIT_ERR
		1794	* @param SPIx SPI Instance
		1795	* @retval None
		1796	*/
		1797	__STATIC_INLINE void LL_I2S_DisableIT_ERR(SPI_TypeDef *SPIx)
		1798	{
		1799	LL_SPI_DisableIT_ERR(SPIx);
		1800	}
		1801
		1802	/**
		1803	* @brief Disable Rx buffer not empty IT
		1804	* @rmtoll CR2 RXNEIE LL_I2S_DisableIT_RXNE
		1805	* @param SPIx SPI Instance
		1806	* @retval None
		1807	*/
		1808	__STATIC_INLINE void LL_I2S_DisableIT_RXNE(SPI_TypeDef *SPIx)
		1809	{
		1810	LL_SPI_DisableIT_RXNE(SPIx);
		1811	}
		1812
		1813	/**
		1814	* @brief Disable Tx buffer empty IT
		1815	* @rmtoll CR2 TXEIE LL_I2S_DisableIT_TXE
		1816	* @param SPIx SPI Instance
		1817	* @retval None
		1818	*/
		1819	__STATIC_INLINE void LL_I2S_DisableIT_TXE(SPI_TypeDef *SPIx)
		1820	{
		1821	LL_SPI_DisableIT_TXE(SPIx);
		1822	}
		1823
		1824	/**
		1825	* @brief Check if ERR IT is enabled
		1826	* @rmtoll CR2 ERRIE LL_I2S_IsEnabledIT_ERR
		1827	* @param SPIx SPI Instance
		1828	* @retval State of bit (1 or 0).
		1829	*/
		1830	__STATIC_INLINE uint32_t LL_I2S_IsEnabledIT_ERR(SPI_TypeDef *SPIx)
		1831	{
		1832	return LL_SPI_IsEnabledIT_ERR(SPIx);
		1833	}
		1834
		1835	/**
		1836	* @brief Check if RXNE IT is enabled
		1837	* @rmtoll CR2 RXNEIE LL_I2S_IsEnabledIT_RXNE
		1838	* @param SPIx SPI Instance
		1839	* @retval State of bit (1 or 0).
		1840	*/
		1841	__STATIC_INLINE uint32_t LL_I2S_IsEnabledIT_RXNE(SPI_TypeDef *SPIx)
		1842	{
		1843	return LL_SPI_IsEnabledIT_RXNE(SPIx);
		1844	}
		1845
		1846	/**
		1847	* @brief Check if TXE IT is enabled
		1848	* @rmtoll CR2 TXEIE LL_I2S_IsEnabledIT_TXE
		1849	* @param SPIx SPI Instance
		1850	* @retval State of bit (1 or 0).
		1851	*/
		1852	__STATIC_INLINE uint32_t LL_I2S_IsEnabledIT_TXE(SPI_TypeDef *SPIx)
		1853	{
		1854	return LL_SPI_IsEnabledIT_TXE(SPIx);
		1855	}
		1856
		1857	/**
		1858	* @}
		1859	*/
		1860
		1861	/** @defgroup I2S_LL_EF_DMA DMA Management
		1862	* @{
		1863	*/
		1864
		1865	/**
		1866	* @brief Enable DMA Rx
		1867	* @rmtoll CR2 RXDMAEN LL_I2S_EnableDMAReq_RX
		1868	* @param SPIx SPI Instance
		1869	* @retval None
		1870	*/
		1871	__STATIC_INLINE void LL_I2S_EnableDMAReq_RX(SPI_TypeDef *SPIx)
		1872	{
		1873	LL_SPI_EnableDMAReq_RX(SPIx);
		1874	}
		1875
		1876	/**
		1877	* @brief Disable DMA Rx
		1878	* @rmtoll CR2 RXDMAEN LL_I2S_DisableDMAReq_RX
		1879	* @param SPIx SPI Instance
		1880	* @retval None
		1881	*/
		1882	__STATIC_INLINE void LL_I2S_DisableDMAReq_RX(SPI_TypeDef *SPIx)
		1883	{
		1884	LL_SPI_DisableDMAReq_RX(SPIx);
		1885	}
		1886
		1887	/**
		1888	* @brief Check if DMA Rx is enabled
		1889	* @rmtoll CR2 RXDMAEN LL_I2S_IsEnabledDMAReq_RX
		1890	* @param SPIx SPI Instance
		1891	* @retval State of bit (1 or 0).
		1892	*/
		1893	__STATIC_INLINE uint32_t LL_I2S_IsEnabledDMAReq_RX(SPI_TypeDef *SPIx)
		1894	{
		1895	return LL_SPI_IsEnabledDMAReq_RX(SPIx);
		1896	}
		1897
		1898	/**
		1899	* @brief Enable DMA Tx
		1900	* @rmtoll CR2 TXDMAEN LL_I2S_EnableDMAReq_TX
		1901	* @param SPIx SPI Instance
		1902	* @retval None
		1903	*/
		1904	__STATIC_INLINE void LL_I2S_EnableDMAReq_TX(SPI_TypeDef *SPIx)
		1905	{
		1906	LL_SPI_EnableDMAReq_TX(SPIx);
		1907	}
		1908
		1909	/**
		1910	* @brief Disable DMA Tx
		1911	* @rmtoll CR2 TXDMAEN LL_I2S_DisableDMAReq_TX
		1912	* @param SPIx SPI Instance
		1913	* @retval None
		1914	*/
		1915	__STATIC_INLINE void LL_I2S_DisableDMAReq_TX(SPI_TypeDef *SPIx)
		1916	{
		1917	LL_SPI_DisableDMAReq_TX(SPIx);
		1918	}
		1919
		1920	/**
		1921	* @brief Check if DMA Tx is enabled
		1922	* @rmtoll CR2 TXDMAEN LL_I2S_IsEnabledDMAReq_TX
		1923	* @param SPIx SPI Instance
		1924	* @retval State of bit (1 or 0).
		1925	*/
		1926	__STATIC_INLINE uint32_t LL_I2S_IsEnabledDMAReq_TX(SPI_TypeDef *SPIx)
		1927	{
		1928	return LL_SPI_IsEnabledDMAReq_TX(SPIx);
		1929	}
		1930
		1931	/**
		1932	* @}
		1933	*/
		1934
		1935	/** @defgroup I2S_LL_EF_DATA DATA Management
		1936	* @{
		1937	*/
		1938
		1939	/**
		1940	* @brief Read 16-Bits in data register
		1941	* @rmtoll DR DR LL_I2S_ReceiveData16
		1942	* @param SPIx SPI Instance
		1943	* @retval RxData Value between Min_Data=0x0000 and Max_Data=0xFFFF
		1944	*/
		1945	__STATIC_INLINE uint16_t LL_I2S_ReceiveData16(SPI_TypeDef *SPIx)
		1946	{
		1947	return LL_SPI_ReceiveData16(SPIx);
		1948	}
		1949
		1950	/**
		1951	* @brief Write 16-Bits in data register
		1952	* @rmtoll DR DR LL_I2S_TransmitData16
		1953	* @param SPIx SPI Instance
		1954	* @param TxData Value between Min_Data=0x0000 and Max_Data=0xFFFF
		1955	* @retval None
		1956	*/
		1957	__STATIC_INLINE void LL_I2S_TransmitData16(SPI_TypeDef *SPIx, uint16_t TxData)
		1958	{
		1959	LL_SPI_TransmitData16(SPIx, TxData);
		1960	}
		1961
		1962	/**
		1963	* @}
		1964	*/
		1965
		1966	#if defined(USE_FULL_LL_DRIVER)
		1967	/** @defgroup I2S_LL_EF_Init Initialization and de-initialization functions
		1968	* @{
		1969	*/
		1970
		1971	ErrorStatus LL_I2S_DeInit(SPI_TypeDef *SPIx);
		1972	ErrorStatus LL_I2S_Init(SPI_TypeDef SPIx, LL_I2S_InitTypeDef I2S_InitStruct);
		1973	void LL_I2S_StructInit(LL_I2S_InitTypeDef *I2S_InitStruct);
		1974	void LL_I2S_ConfigPrescaler(SPI_TypeDef *SPIx, uint32_t PrescalerLinear, uint32_t PrescalerParity);
		1975
		1976	/**
		1977	* @}
		1978	*/
		1979	#endif /* USE_FULL_LL_DRIVER */
		1980
		1981	/**
		1982	* @}
		1983	*/
		1984
		1985	/**
		1986	* @}
		1987	*/
		1988	#endif /* SPI_I2S_SUPPORT */
		1989
		1990	#endif /* defined (SPI1) \|\| defined (SPI2) \|\| defined (SPI3) */
		1991
		1992	/**
		1993	* @}
		1994	*/
		1995
		1996	#ifdef __cplusplus
		1997	}
		1998	#endif
		1999
		2000	#endif /* STM32L1xx_LL_SPI_H */
		2001
		2002	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

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