| /** |
| ****************************************************************************** |
| * @file stm32l4xx_ll_spi.h |
| * @author MCD Application Team |
| * @brief Header file of SPI LL module. |
| ****************************************************************************** |
| * @attention |
| * |
| * Copyright (c) 2017 STMicroelectronics. |
| * All rights reserved. |
| * |
| * This software is licensed under terms that can be found in the LICENSE file |
| * in the root directory of this software component. |
| * If no LICENSE file comes with this software, it is provided AS-IS. |
| * |
| ****************************************************************************** |
| */ |
| |
| /* Define to prevent recursive inclusion -------------------------------------*/ |
| #ifndef STM32L4xx_LL_SPI_H |
| #define STM32L4xx_LL_SPI_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32l4xx.h" |
| |
| /** @addtogroup STM32L4xx_LL_Driver |
| * @{ |
| */ |
| |
| #if defined (SPI1) || defined (SPI2) || defined (SPI3) |
| |
| /** @defgroup SPI_LL SPI |
| * @{ |
| */ |
| |
| /* Private types -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private macros ------------------------------------------------------------*/ |
| |
| /* Exported types ------------------------------------------------------------*/ |
| #if defined(USE_FULL_LL_DRIVER) |
| /** @defgroup SPI_LL_ES_INIT SPI Exported Init structure |
| * @{ |
| */ |
| |
| /** |
| * @brief SPI Init structures definition |
| */ |
| typedef struct |
| { |
| uint32_t TransferDirection; /*!< Specifies the SPI unidirectional or bidirectional data mode. |
| This parameter can be a value of @ref SPI_LL_EC_TRANSFER_MODE. |
| |
| This feature can be modified afterwards using unitary |
| function @ref LL_SPI_SetTransferDirection().*/ |
| |
| uint32_t Mode; /*!< Specifies the SPI mode (Master/Slave). |
| This parameter can be a value of @ref SPI_LL_EC_MODE. |
| |
| This feature can be modified afterwards using unitary |
| function @ref LL_SPI_SetMode().*/ |
| |
| uint32_t DataWidth; /*!< Specifies the SPI data width. |
| This parameter can be a value of @ref SPI_LL_EC_DATAWIDTH. |
| |
| This feature can be modified afterwards using unitary |
| function @ref LL_SPI_SetDataWidth().*/ |
| |
| uint32_t ClockPolarity; /*!< Specifies the serial clock steady state. |
| This parameter can be a value of @ref SPI_LL_EC_POLARITY. |
| |
| This feature can be modified afterwards using unitary |
| function @ref LL_SPI_SetClockPolarity().*/ |
| |
| uint32_t ClockPhase; /*!< Specifies the clock active edge for the bit capture. |
| This parameter can be a value of @ref SPI_LL_EC_PHASE. |
| |
| This feature can be modified afterwards using unitary |
| function @ref LL_SPI_SetClockPhase().*/ |
| |
| uint32_t NSS; /*!< Specifies whether the NSS signal is managed by hardware (NSS pin) |
| or by software using the SSI bit. |
| This parameter can be a value of @ref SPI_LL_EC_NSS_MODE. |
| |
| This feature can be modified afterwards using unitary |
| function @ref LL_SPI_SetNSSMode().*/ |
| |
| uint32_t BaudRate; /*!< Specifies the BaudRate prescaler value which will be used |
| to configure the transmit and receive SCK clock. |
| This parameter can be a value of @ref SPI_LL_EC_BAUDRATEPRESCALER. |
| @note The communication clock is derived from the master clock. |
| The slave clock does not need to be set. |
| |
| This feature can be modified afterwards using unitary |
| function @ref LL_SPI_SetBaudRatePrescaler().*/ |
| |
| uint32_t BitOrder; /*!< Specifies whether data transfers start from MSB or LSB bit. |
| This parameter can be a value of @ref SPI_LL_EC_BIT_ORDER. |
| |
| This feature can be modified afterwards using unitary |
| function @ref LL_SPI_SetTransferBitOrder().*/ |
| |
| uint32_t CRCCalculation; /*!< Specifies if the CRC calculation is enabled or not. |
| This parameter can be a value of @ref SPI_LL_EC_CRC_CALCULATION. |
| |
| This feature can be modified afterwards using unitary |
| functions @ref LL_SPI_EnableCRC() and @ref LL_SPI_DisableCRC().*/ |
| |
| uint32_t CRCPoly; /*!< Specifies the polynomial used for the CRC calculation. |
| This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFFFF. |
| |
| This feature can be modified afterwards using unitary |
| function @ref LL_SPI_SetCRCPolynomial().*/ |
| |
| } LL_SPI_InitTypeDef; |
| |
| /** |
| * @} |
| */ |
| #endif /* USE_FULL_LL_DRIVER */ |
| |
| /* Exported constants --------------------------------------------------------*/ |
| /** @defgroup SPI_LL_Exported_Constants SPI Exported Constants |
| * @{ |
| */ |
| |
| /** @defgroup SPI_LL_EC_GET_FLAG Get Flags Defines |
| * @brief Flags defines which can be used with LL_SPI_ReadReg function |
| * @{ |
| */ |
| #define LL_SPI_SR_RXNE SPI_SR_RXNE /*!< Rx buffer not empty flag */ |
| #define LL_SPI_SR_TXE SPI_SR_TXE /*!< Tx buffer empty flag */ |
| #define LL_SPI_SR_BSY SPI_SR_BSY /*!< Busy flag */ |
| #define LL_SPI_SR_CRCERR SPI_SR_CRCERR /*!< CRC error flag */ |
| #define LL_SPI_SR_MODF SPI_SR_MODF /*!< Mode fault flag */ |
| #define LL_SPI_SR_OVR SPI_SR_OVR /*!< Overrun flag */ |
| #define LL_SPI_SR_FRE SPI_SR_FRE /*!< TI mode frame format error flag */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_IT IT Defines |
| * @brief IT defines which can be used with LL_SPI_ReadReg and LL_SPI_WriteReg functions |
| * @{ |
| */ |
| #define LL_SPI_CR2_RXNEIE SPI_CR2_RXNEIE /*!< Rx buffer not empty interrupt enable */ |
| #define LL_SPI_CR2_TXEIE SPI_CR2_TXEIE /*!< Tx buffer empty interrupt enable */ |
| #define LL_SPI_CR2_ERRIE SPI_CR2_ERRIE /*!< Error interrupt enable */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_MODE Operation Mode |
| * @{ |
| */ |
| #define LL_SPI_MODE_MASTER (SPI_CR1_MSTR | SPI_CR1_SSI) /*!< Master configuration */ |
| #define LL_SPI_MODE_SLAVE 0x00000000U /*!< Slave configuration */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_PROTOCOL Serial Protocol |
| * @{ |
| */ |
| #define LL_SPI_PROTOCOL_MOTOROLA 0x00000000U /*!< Motorola mode. Used as default value */ |
| #define LL_SPI_PROTOCOL_TI (SPI_CR2_FRF) /*!< TI mode */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_PHASE Clock Phase |
| * @{ |
| */ |
| #define LL_SPI_PHASE_1EDGE 0x00000000U /*!< First clock transition is the first data capture edge */ |
| #define LL_SPI_PHASE_2EDGE (SPI_CR1_CPHA) /*!< Second clock transition is the first data capture edge */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_POLARITY Clock Polarity |
| * @{ |
| */ |
| #define LL_SPI_POLARITY_LOW 0x00000000U /*!< Clock to 0 when idle */ |
| #define LL_SPI_POLARITY_HIGH (SPI_CR1_CPOL) /*!< Clock to 1 when idle */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_BAUDRATEPRESCALER Baud Rate Prescaler |
| * @{ |
| */ |
| #define LL_SPI_BAUDRATEPRESCALER_DIV2 0x00000000U /*!< BaudRate control equal to fPCLK/2 */ |
| #define LL_SPI_BAUDRATEPRESCALER_DIV4 (SPI_CR1_BR_0) /*!< BaudRate control equal to fPCLK/4 */ |
| #define LL_SPI_BAUDRATEPRESCALER_DIV8 (SPI_CR1_BR_1) /*!< BaudRate control equal to fPCLK/8 */ |
| #define LL_SPI_BAUDRATEPRESCALER_DIV16 (SPI_CR1_BR_1 | SPI_CR1_BR_0) /*!< BaudRate control equal to fPCLK/16 */ |
| #define LL_SPI_BAUDRATEPRESCALER_DIV32 (SPI_CR1_BR_2) /*!< BaudRate control equal to fPCLK/32 */ |
| #define LL_SPI_BAUDRATEPRESCALER_DIV64 (SPI_CR1_BR_2 | SPI_CR1_BR_0) /*!< BaudRate control equal to fPCLK/64 */ |
| #define LL_SPI_BAUDRATEPRESCALER_DIV128 (SPI_CR1_BR_2 | SPI_CR1_BR_1) /*!< BaudRate control equal to fPCLK/128 */ |
| #define LL_SPI_BAUDRATEPRESCALER_DIV256 (SPI_CR1_BR_2 | SPI_CR1_BR_1 | SPI_CR1_BR_0) /*!< BaudRate control equal to fPCLK/256 */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_BIT_ORDER Transmission Bit Order |
| * @{ |
| */ |
| #define LL_SPI_LSB_FIRST (SPI_CR1_LSBFIRST) /*!< Data is transmitted/received with the LSB first */ |
| #define LL_SPI_MSB_FIRST 0x00000000U /*!< Data is transmitted/received with the MSB first */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_TRANSFER_MODE Transfer Mode |
| * @{ |
| */ |
| #define LL_SPI_FULL_DUPLEX 0x00000000U /*!< Full-Duplex mode. Rx and Tx transfer on 2 lines */ |
| #define LL_SPI_SIMPLEX_RX (SPI_CR1_RXONLY) /*!< Simplex Rx mode. Rx transfer only on 1 line */ |
| #define LL_SPI_HALF_DUPLEX_RX (SPI_CR1_BIDIMODE) /*!< Half-Duplex Rx mode. Rx transfer on 1 line */ |
| #define LL_SPI_HALF_DUPLEX_TX (SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE) /*!< Half-Duplex Tx mode. Tx transfer on 1 line */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_NSS_MODE Slave Select Pin Mode |
| * @{ |
| */ |
| #define LL_SPI_NSS_SOFT (SPI_CR1_SSM) /*!< NSS managed internally. NSS pin not used and free */ |
| #define LL_SPI_NSS_HARD_INPUT 0x00000000U /*!< NSS pin used in Input. Only used in Master mode */ |
| #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 */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_DATAWIDTH Datawidth |
| * @{ |
| */ |
| #define LL_SPI_DATAWIDTH_4BIT (SPI_CR2_DS_0 | SPI_CR2_DS_1) /*!< Data length for SPI transfer: 4 bits */ |
| #define LL_SPI_DATAWIDTH_5BIT (SPI_CR2_DS_2) /*!< Data length for SPI transfer: 5 bits */ |
| #define LL_SPI_DATAWIDTH_6BIT (SPI_CR2_DS_2 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 6 bits */ |
| #define LL_SPI_DATAWIDTH_7BIT (SPI_CR2_DS_2 | SPI_CR2_DS_1) /*!< Data length for SPI transfer: 7 bits */ |
| #define LL_SPI_DATAWIDTH_8BIT (SPI_CR2_DS_2 | SPI_CR2_DS_1 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 8 bits */ |
| #define LL_SPI_DATAWIDTH_9BIT (SPI_CR2_DS_3) /*!< Data length for SPI transfer: 9 bits */ |
| #define LL_SPI_DATAWIDTH_10BIT (SPI_CR2_DS_3 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 10 bits */ |
| #define LL_SPI_DATAWIDTH_11BIT (SPI_CR2_DS_3 | SPI_CR2_DS_1) /*!< Data length for SPI transfer: 11 bits */ |
| #define LL_SPI_DATAWIDTH_12BIT (SPI_CR2_DS_3 | SPI_CR2_DS_1 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 12 bits */ |
| #define LL_SPI_DATAWIDTH_13BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2) /*!< Data length for SPI transfer: 13 bits */ |
| #define LL_SPI_DATAWIDTH_14BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 14 bits */ |
| #define LL_SPI_DATAWIDTH_15BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2 | SPI_CR2_DS_1) /*!< Data length for SPI transfer: 15 bits */ |
| #define LL_SPI_DATAWIDTH_16BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2 | SPI_CR2_DS_1 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 16 bits */ |
| /** |
| * @} |
| */ |
| #if defined(USE_FULL_LL_DRIVER) |
| |
| /** @defgroup SPI_LL_EC_CRC_CALCULATION CRC Calculation |
| * @{ |
| */ |
| #define LL_SPI_CRCCALCULATION_DISABLE 0x00000000U /*!< CRC calculation disabled */ |
| #define LL_SPI_CRCCALCULATION_ENABLE (SPI_CR1_CRCEN) /*!< CRC calculation enabled */ |
| /** |
| * @} |
| */ |
| #endif /* USE_FULL_LL_DRIVER */ |
| |
| /** @defgroup SPI_LL_EC_CRC_LENGTH CRC Length |
| * @{ |
| */ |
| #define LL_SPI_CRC_8BIT 0x00000000U /*!< 8-bit CRC length */ |
| #define LL_SPI_CRC_16BIT (SPI_CR1_CRCL) /*!< 16-bit CRC length */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_RX_FIFO_TH RX FIFO Threshold |
| * @{ |
| */ |
| #define LL_SPI_RX_FIFO_TH_HALF 0x00000000U /*!< RXNE event is generated if FIFO level is greater than or equal to 1/2 (16-bit) */ |
| #define LL_SPI_RX_FIFO_TH_QUARTER (SPI_CR2_FRXTH) /*!< RXNE event is generated if FIFO level is greater than or equal to 1/4 (8-bit) */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_RX_FIFO RX FIFO Level |
| * @{ |
| */ |
| #define LL_SPI_RX_FIFO_EMPTY 0x00000000U /*!< FIFO reception empty */ |
| #define LL_SPI_RX_FIFO_QUARTER_FULL (SPI_SR_FRLVL_0) /*!< FIFO reception 1/4 */ |
| #define LL_SPI_RX_FIFO_HALF_FULL (SPI_SR_FRLVL_1) /*!< FIFO reception 1/2 */ |
| #define LL_SPI_RX_FIFO_FULL (SPI_SR_FRLVL_1 | SPI_SR_FRLVL_0) /*!< FIFO reception full */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_TX_FIFO TX FIFO Level |
| * @{ |
| */ |
| #define LL_SPI_TX_FIFO_EMPTY 0x00000000U /*!< FIFO transmission empty */ |
| #define LL_SPI_TX_FIFO_QUARTER_FULL (SPI_SR_FTLVL_0) /*!< FIFO transmission 1/4 */ |
| #define LL_SPI_TX_FIFO_HALF_FULL (SPI_SR_FTLVL_1) /*!< FIFO transmission 1/2 */ |
| #define LL_SPI_TX_FIFO_FULL (SPI_SR_FTLVL_1 | SPI_SR_FTLVL_0) /*!< FIFO transmission full */ |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EC_DMA_PARITY DMA Parity |
| * @{ |
| */ |
| #define LL_SPI_DMA_PARITY_EVEN 0x00000000U /*!< Select DMA parity Even */ |
| #define LL_SPI_DMA_PARITY_ODD 0x00000001U /*!< Select DMA parity Odd */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /* Exported macro ------------------------------------------------------------*/ |
| /** @defgroup SPI_LL_Exported_Macros SPI Exported Macros |
| * @{ |
| */ |
| |
| /** @defgroup SPI_LL_EM_WRITE_READ Common Write and read registers Macros |
| * @{ |
| */ |
| |
| /** |
| * @brief Write a value in SPI register |
| * @param __INSTANCE__ SPI Instance |
| * @param __REG__ Register to be written |
| * @param __VALUE__ Value to be written in the register |
| * @retval None |
| */ |
| #define LL_SPI_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__)) |
| |
| /** |
| * @brief Read a value in SPI register |
| * @param __INSTANCE__ SPI Instance |
| * @param __REG__ Register to be read |
| * @retval Register value |
| */ |
| #define LL_SPI_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__) |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /* Exported functions --------------------------------------------------------*/ |
| /** @defgroup SPI_LL_Exported_Functions SPI Exported Functions |
| * @{ |
| */ |
| |
| /** @defgroup SPI_LL_EF_Configuration Configuration |
| * @{ |
| */ |
| |
| /** |
| * @brief Enable SPI peripheral |
| * @rmtoll CR1 SPE LL_SPI_Enable |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_Enable(SPI_TypeDef *SPIx) |
| { |
| SET_BIT(SPIx->CR1, SPI_CR1_SPE); |
| } |
| |
| /** |
| * @brief Disable SPI peripheral |
| * @note When disabling the SPI, follow the procedure described in the Reference Manual. |
| * @rmtoll CR1 SPE LL_SPI_Disable |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_Disable(SPI_TypeDef *SPIx) |
| { |
| CLEAR_BIT(SPIx->CR1, SPI_CR1_SPE); |
| } |
| |
| /** |
| * @brief Check if SPI peripheral is enabled |
| * @rmtoll CR1 SPE LL_SPI_IsEnabled |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsEnabled(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->CR1, SPI_CR1_SPE) == (SPI_CR1_SPE)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Set SPI operation mode to Master or Slave |
| * @note This bit should not be changed when communication is ongoing. |
| * @rmtoll CR1 MSTR LL_SPI_SetMode\n |
| * CR1 SSI LL_SPI_SetMode |
| * @param SPIx SPI Instance |
| * @param Mode This parameter can be one of the following values: |
| * @arg @ref LL_SPI_MODE_MASTER |
| * @arg @ref LL_SPI_MODE_SLAVE |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetMode(SPI_TypeDef *SPIx, uint32_t Mode) |
| { |
| MODIFY_REG(SPIx->CR1, SPI_CR1_MSTR | SPI_CR1_SSI, Mode); |
| } |
| |
| /** |
| * @brief Get SPI operation mode (Master or Slave) |
| * @rmtoll CR1 MSTR LL_SPI_GetMode\n |
| * CR1 SSI LL_SPI_GetMode |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_MODE_MASTER |
| * @arg @ref LL_SPI_MODE_SLAVE |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetMode(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_MSTR | SPI_CR1_SSI)); |
| } |
| |
| /** |
| * @brief Set serial protocol used |
| * @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation. |
| * @rmtoll CR2 FRF LL_SPI_SetStandard |
| * @param SPIx SPI Instance |
| * @param Standard This parameter can be one of the following values: |
| * @arg @ref LL_SPI_PROTOCOL_MOTOROLA |
| * @arg @ref LL_SPI_PROTOCOL_TI |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetStandard(SPI_TypeDef *SPIx, uint32_t Standard) |
| { |
| MODIFY_REG(SPIx->CR2, SPI_CR2_FRF, Standard); |
| } |
| |
| /** |
| * @brief Get serial protocol used |
| * @rmtoll CR2 FRF LL_SPI_GetStandard |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_PROTOCOL_MOTOROLA |
| * @arg @ref LL_SPI_PROTOCOL_TI |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetStandard(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_FRF)); |
| } |
| |
| /** |
| * @brief Set clock phase |
| * @note This bit should not be changed when communication is ongoing. |
| * This bit is not used in SPI TI mode. |
| * @rmtoll CR1 CPHA LL_SPI_SetClockPhase |
| * @param SPIx SPI Instance |
| * @param ClockPhase This parameter can be one of the following values: |
| * @arg @ref LL_SPI_PHASE_1EDGE |
| * @arg @ref LL_SPI_PHASE_2EDGE |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetClockPhase(SPI_TypeDef *SPIx, uint32_t ClockPhase) |
| { |
| MODIFY_REG(SPIx->CR1, SPI_CR1_CPHA, ClockPhase); |
| } |
| |
| /** |
| * @brief Get clock phase |
| * @rmtoll CR1 CPHA LL_SPI_GetClockPhase |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_PHASE_1EDGE |
| * @arg @ref LL_SPI_PHASE_2EDGE |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetClockPhase(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_CPHA)); |
| } |
| |
| /** |
| * @brief Set clock polarity |
| * @note This bit should not be changed when communication is ongoing. |
| * This bit is not used in SPI TI mode. |
| * @rmtoll CR1 CPOL LL_SPI_SetClockPolarity |
| * @param SPIx SPI Instance |
| * @param ClockPolarity This parameter can be one of the following values: |
| * @arg @ref LL_SPI_POLARITY_LOW |
| * @arg @ref LL_SPI_POLARITY_HIGH |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetClockPolarity(SPI_TypeDef *SPIx, uint32_t ClockPolarity) |
| { |
| MODIFY_REG(SPIx->CR1, SPI_CR1_CPOL, ClockPolarity); |
| } |
| |
| /** |
| * @brief Get clock polarity |
| * @rmtoll CR1 CPOL LL_SPI_GetClockPolarity |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_POLARITY_LOW |
| * @arg @ref LL_SPI_POLARITY_HIGH |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetClockPolarity(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_CPOL)); |
| } |
| |
| /** |
| * @brief Set baud rate prescaler |
| * @note These bits should not be changed when communication is ongoing. SPI BaudRate = fPCLK/Prescaler. |
| * @rmtoll CR1 BR LL_SPI_SetBaudRatePrescaler |
| * @param SPIx SPI Instance |
| * @param BaudRate This parameter can be one of the following values: |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV2 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV4 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV8 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV16 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV32 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV64 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV128 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV256 |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetBaudRatePrescaler(SPI_TypeDef *SPIx, uint32_t BaudRate) |
| { |
| MODIFY_REG(SPIx->CR1, SPI_CR1_BR, BaudRate); |
| } |
| |
| /** |
| * @brief Get baud rate prescaler |
| * @rmtoll CR1 BR LL_SPI_GetBaudRatePrescaler |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV2 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV4 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV8 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV16 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV32 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV64 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV128 |
| * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV256 |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetBaudRatePrescaler(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_BR)); |
| } |
| |
| /** |
| * @brief Set transfer bit order |
| * @note This bit should not be changed when communication is ongoing. This bit is not used in SPI TI mode. |
| * @rmtoll CR1 LSBFIRST LL_SPI_SetTransferBitOrder |
| * @param SPIx SPI Instance |
| * @param BitOrder This parameter can be one of the following values: |
| * @arg @ref LL_SPI_LSB_FIRST |
| * @arg @ref LL_SPI_MSB_FIRST |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetTransferBitOrder(SPI_TypeDef *SPIx, uint32_t BitOrder) |
| { |
| MODIFY_REG(SPIx->CR1, SPI_CR1_LSBFIRST, BitOrder); |
| } |
| |
| /** |
| * @brief Get transfer bit order |
| * @rmtoll CR1 LSBFIRST LL_SPI_GetTransferBitOrder |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_LSB_FIRST |
| * @arg @ref LL_SPI_MSB_FIRST |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetTransferBitOrder(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_LSBFIRST)); |
| } |
| |
| /** |
| * @brief Set transfer direction mode |
| * @note For Half-Duplex mode, Rx Direction is set by default. |
| * In master mode, the MOSI pin is used and in slave mode, the MISO pin is used for Half-Duplex. |
| * @rmtoll CR1 RXONLY LL_SPI_SetTransferDirection\n |
| * CR1 BIDIMODE LL_SPI_SetTransferDirection\n |
| * CR1 BIDIOE LL_SPI_SetTransferDirection |
| * @param SPIx SPI Instance |
| * @param TransferDirection This parameter can be one of the following values: |
| * @arg @ref LL_SPI_FULL_DUPLEX |
| * @arg @ref LL_SPI_SIMPLEX_RX |
| * @arg @ref LL_SPI_HALF_DUPLEX_RX |
| * @arg @ref LL_SPI_HALF_DUPLEX_TX |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetTransferDirection(SPI_TypeDef *SPIx, uint32_t TransferDirection) |
| { |
| MODIFY_REG(SPIx->CR1, SPI_CR1_RXONLY | SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE, TransferDirection); |
| } |
| |
| /** |
| * @brief Get transfer direction mode |
| * @rmtoll CR1 RXONLY LL_SPI_GetTransferDirection\n |
| * CR1 BIDIMODE LL_SPI_GetTransferDirection\n |
| * CR1 BIDIOE LL_SPI_GetTransferDirection |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_FULL_DUPLEX |
| * @arg @ref LL_SPI_SIMPLEX_RX |
| * @arg @ref LL_SPI_HALF_DUPLEX_RX |
| * @arg @ref LL_SPI_HALF_DUPLEX_TX |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetTransferDirection(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_RXONLY | SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE)); |
| } |
| |
| /** |
| * @brief Set frame data width |
| * @rmtoll CR2 DS LL_SPI_SetDataWidth |
| * @param SPIx SPI Instance |
| * @param DataWidth This parameter can be one of the following values: |
| * @arg @ref LL_SPI_DATAWIDTH_4BIT |
| * @arg @ref LL_SPI_DATAWIDTH_5BIT |
| * @arg @ref LL_SPI_DATAWIDTH_6BIT |
| * @arg @ref LL_SPI_DATAWIDTH_7BIT |
| * @arg @ref LL_SPI_DATAWIDTH_8BIT |
| * @arg @ref LL_SPI_DATAWIDTH_9BIT |
| * @arg @ref LL_SPI_DATAWIDTH_10BIT |
| * @arg @ref LL_SPI_DATAWIDTH_11BIT |
| * @arg @ref LL_SPI_DATAWIDTH_12BIT |
| * @arg @ref LL_SPI_DATAWIDTH_13BIT |
| * @arg @ref LL_SPI_DATAWIDTH_14BIT |
| * @arg @ref LL_SPI_DATAWIDTH_15BIT |
| * @arg @ref LL_SPI_DATAWIDTH_16BIT |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetDataWidth(SPI_TypeDef *SPIx, uint32_t DataWidth) |
| { |
| MODIFY_REG(SPIx->CR2, SPI_CR2_DS, DataWidth); |
| } |
| |
| /** |
| * @brief Get frame data width |
| * @rmtoll CR2 DS LL_SPI_GetDataWidth |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_DATAWIDTH_4BIT |
| * @arg @ref LL_SPI_DATAWIDTH_5BIT |
| * @arg @ref LL_SPI_DATAWIDTH_6BIT |
| * @arg @ref LL_SPI_DATAWIDTH_7BIT |
| * @arg @ref LL_SPI_DATAWIDTH_8BIT |
| * @arg @ref LL_SPI_DATAWIDTH_9BIT |
| * @arg @ref LL_SPI_DATAWIDTH_10BIT |
| * @arg @ref LL_SPI_DATAWIDTH_11BIT |
| * @arg @ref LL_SPI_DATAWIDTH_12BIT |
| * @arg @ref LL_SPI_DATAWIDTH_13BIT |
| * @arg @ref LL_SPI_DATAWIDTH_14BIT |
| * @arg @ref LL_SPI_DATAWIDTH_15BIT |
| * @arg @ref LL_SPI_DATAWIDTH_16BIT |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetDataWidth(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_DS)); |
| } |
| |
| /** |
| * @brief Set threshold of RXFIFO that triggers an RXNE event |
| * @rmtoll CR2 FRXTH LL_SPI_SetRxFIFOThreshold |
| * @param SPIx SPI Instance |
| * @param Threshold This parameter can be one of the following values: |
| * @arg @ref LL_SPI_RX_FIFO_TH_HALF |
| * @arg @ref LL_SPI_RX_FIFO_TH_QUARTER |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetRxFIFOThreshold(SPI_TypeDef *SPIx, uint32_t Threshold) |
| { |
| MODIFY_REG(SPIx->CR2, SPI_CR2_FRXTH, Threshold); |
| } |
| |
| /** |
| * @brief Get threshold of RXFIFO that triggers an RXNE event |
| * @rmtoll CR2 FRXTH LL_SPI_GetRxFIFOThreshold |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_RX_FIFO_TH_HALF |
| * @arg @ref LL_SPI_RX_FIFO_TH_QUARTER |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetRxFIFOThreshold(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_FRXTH)); |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EF_CRC_Management CRC Management |
| * @{ |
| */ |
| |
| /** |
| * @brief Enable CRC |
| * @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation. |
| * @rmtoll CR1 CRCEN LL_SPI_EnableCRC |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_EnableCRC(SPI_TypeDef *SPIx) |
| { |
| SET_BIT(SPIx->CR1, SPI_CR1_CRCEN); |
| } |
| |
| /** |
| * @brief Disable CRC |
| * @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation. |
| * @rmtoll CR1 CRCEN LL_SPI_DisableCRC |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_DisableCRC(SPI_TypeDef *SPIx) |
| { |
| CLEAR_BIT(SPIx->CR1, SPI_CR1_CRCEN); |
| } |
| |
| /** |
| * @brief Check if CRC is enabled |
| * @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation. |
| * @rmtoll CR1 CRCEN LL_SPI_IsEnabledCRC |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsEnabledCRC(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->CR1, SPI_CR1_CRCEN) == (SPI_CR1_CRCEN)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Set CRC Length |
| * @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation. |
| * @rmtoll CR1 CRCL LL_SPI_SetCRCWidth |
| * @param SPIx SPI Instance |
| * @param CRCLength This parameter can be one of the following values: |
| * @arg @ref LL_SPI_CRC_8BIT |
| * @arg @ref LL_SPI_CRC_16BIT |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetCRCWidth(SPI_TypeDef *SPIx, uint32_t CRCLength) |
| { |
| MODIFY_REG(SPIx->CR1, SPI_CR1_CRCL, CRCLength); |
| } |
| |
| /** |
| * @brief Get CRC Length |
| * @rmtoll CR1 CRCL LL_SPI_GetCRCWidth |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_CRC_8BIT |
| * @arg @ref LL_SPI_CRC_16BIT |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetCRCWidth(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_CRCL)); |
| } |
| |
| /** |
| * @brief Set CRCNext to transfer CRC on the line |
| * @note This bit has to be written as soon as the last data is written in the SPIx_DR register. |
| * @rmtoll CR1 CRCNEXT LL_SPI_SetCRCNext |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetCRCNext(SPI_TypeDef *SPIx) |
| { |
| SET_BIT(SPIx->CR1, SPI_CR1_CRCNEXT); |
| } |
| |
| /** |
| * @brief Set polynomial for CRC calculation |
| * @rmtoll CRCPR CRCPOLY LL_SPI_SetCRCPolynomial |
| * @param SPIx SPI Instance |
| * @param CRCPoly This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFFFF |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetCRCPolynomial(SPI_TypeDef *SPIx, uint32_t CRCPoly) |
| { |
| WRITE_REG(SPIx->CRCPR, (uint16_t)CRCPoly); |
| } |
| |
| /** |
| * @brief Get polynomial for CRC calculation |
| * @rmtoll CRCPR CRCPOLY LL_SPI_GetCRCPolynomial |
| * @param SPIx SPI Instance |
| * @retval Returned value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetCRCPolynomial(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_REG(SPIx->CRCPR)); |
| } |
| |
| /** |
| * @brief Get Rx CRC |
| * @rmtoll RXCRCR RXCRC LL_SPI_GetRxCRC |
| * @param SPIx SPI Instance |
| * @retval Returned value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetRxCRC(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_REG(SPIx->RXCRCR)); |
| } |
| |
| /** |
| * @brief Get Tx CRC |
| * @rmtoll TXCRCR TXCRC LL_SPI_GetTxCRC |
| * @param SPIx SPI Instance |
| * @retval Returned value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetTxCRC(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_REG(SPIx->TXCRCR)); |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EF_NSS_Management Slave Select Pin Management |
| * @{ |
| */ |
| |
| /** |
| * @brief Set NSS mode |
| * @note LL_SPI_NSS_SOFT Mode is not used in SPI TI mode. |
| * @rmtoll CR1 SSM LL_SPI_SetNSSMode\n |
| * @rmtoll CR2 SSOE LL_SPI_SetNSSMode |
| * @param SPIx SPI Instance |
| * @param NSS This parameter can be one of the following values: |
| * @arg @ref LL_SPI_NSS_SOFT |
| * @arg @ref LL_SPI_NSS_HARD_INPUT |
| * @arg @ref LL_SPI_NSS_HARD_OUTPUT |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetNSSMode(SPI_TypeDef *SPIx, uint32_t NSS) |
| { |
| MODIFY_REG(SPIx->CR1, SPI_CR1_SSM, NSS); |
| MODIFY_REG(SPIx->CR2, SPI_CR2_SSOE, ((uint32_t)(NSS >> 16U))); |
| } |
| |
| /** |
| * @brief Get NSS mode |
| * @rmtoll CR1 SSM LL_SPI_GetNSSMode\n |
| * @rmtoll CR2 SSOE LL_SPI_GetNSSMode |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_NSS_SOFT |
| * @arg @ref LL_SPI_NSS_HARD_INPUT |
| * @arg @ref LL_SPI_NSS_HARD_OUTPUT |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetNSSMode(const SPI_TypeDef *SPIx) |
| { |
| uint32_t Ssm = (READ_BIT(SPIx->CR1, SPI_CR1_SSM)); |
| uint32_t Ssoe = (READ_BIT(SPIx->CR2, SPI_CR2_SSOE) << 16U); |
| return (Ssm | Ssoe); |
| } |
| |
| /** |
| * @brief Enable NSS pulse management |
| * @note This bit should not be changed when communication is ongoing. This bit is not used in SPI TI mode. |
| * @rmtoll CR2 NSSP LL_SPI_EnableNSSPulseMgt |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_EnableNSSPulseMgt(SPI_TypeDef *SPIx) |
| { |
| SET_BIT(SPIx->CR2, SPI_CR2_NSSP); |
| } |
| |
| /** |
| * @brief Disable NSS pulse management |
| * @note This bit should not be changed when communication is ongoing. This bit is not used in SPI TI mode. |
| * @rmtoll CR2 NSSP LL_SPI_DisableNSSPulseMgt |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_DisableNSSPulseMgt(SPI_TypeDef *SPIx) |
| { |
| CLEAR_BIT(SPIx->CR2, SPI_CR2_NSSP); |
| } |
| |
| /** |
| * @brief Check if NSS pulse is enabled |
| * @note This bit should not be changed when communication is ongoing. This bit is not used in SPI TI mode. |
| * @rmtoll CR2 NSSP LL_SPI_IsEnabledNSSPulse |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsEnabledNSSPulse(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->CR2, SPI_CR2_NSSP) == (SPI_CR2_NSSP)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EF_FLAG_Management FLAG Management |
| * @{ |
| */ |
| |
| /** |
| * @brief Check if Rx buffer is not empty |
| * @rmtoll SR RXNE LL_SPI_IsActiveFlag_RXNE |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_RXNE(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->SR, SPI_SR_RXNE) == (SPI_SR_RXNE)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Check if Tx buffer is empty |
| * @rmtoll SR TXE LL_SPI_IsActiveFlag_TXE |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_TXE(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->SR, SPI_SR_TXE) == (SPI_SR_TXE)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Get CRC error flag |
| * @rmtoll SR CRCERR LL_SPI_IsActiveFlag_CRCERR |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_CRCERR(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->SR, SPI_SR_CRCERR) == (SPI_SR_CRCERR)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Get mode fault error flag |
| * @rmtoll SR MODF LL_SPI_IsActiveFlag_MODF |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_MODF(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->SR, SPI_SR_MODF) == (SPI_SR_MODF)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Get overrun error flag |
| * @rmtoll SR OVR LL_SPI_IsActiveFlag_OVR |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_OVR(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->SR, SPI_SR_OVR) == (SPI_SR_OVR)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Get busy flag |
| * @note The BSY flag is cleared under any one of the following conditions: |
| * -When the SPI is correctly disabled |
| * -When a fault is detected in Master mode (MODF bit set to 1) |
| * -In Master mode, when it finishes a data transmission and no new data is ready to be |
| * sent |
| * -In Slave mode, when the BSY flag is set to '0' for at least one SPI clock cycle between |
| * each data transfer. |
| * @rmtoll SR BSY LL_SPI_IsActiveFlag_BSY |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_BSY(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->SR, SPI_SR_BSY) == (SPI_SR_BSY)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Get frame format error flag |
| * @rmtoll SR FRE LL_SPI_IsActiveFlag_FRE |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_FRE(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->SR, SPI_SR_FRE) == (SPI_SR_FRE)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Get FIFO reception Level |
| * @rmtoll SR FRLVL LL_SPI_GetRxFIFOLevel |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_RX_FIFO_EMPTY |
| * @arg @ref LL_SPI_RX_FIFO_QUARTER_FULL |
| * @arg @ref LL_SPI_RX_FIFO_HALF_FULL |
| * @arg @ref LL_SPI_RX_FIFO_FULL |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetRxFIFOLevel(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->SR, SPI_SR_FRLVL)); |
| } |
| |
| /** |
| * @brief Get FIFO Transmission Level |
| * @rmtoll SR FTLVL LL_SPI_GetTxFIFOLevel |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_TX_FIFO_EMPTY |
| * @arg @ref LL_SPI_TX_FIFO_QUARTER_FULL |
| * @arg @ref LL_SPI_TX_FIFO_HALF_FULL |
| * @arg @ref LL_SPI_TX_FIFO_FULL |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetTxFIFOLevel(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->SR, SPI_SR_FTLVL)); |
| } |
| |
| /** |
| * @brief Clear CRC error flag |
| * @rmtoll SR CRCERR LL_SPI_ClearFlag_CRCERR |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_ClearFlag_CRCERR(SPI_TypeDef *SPIx) |
| { |
| CLEAR_BIT(SPIx->SR, SPI_SR_CRCERR); |
| } |
| |
| /** |
| * @brief Clear mode fault error flag |
| * @note Clearing this flag is done by a read access to the SPIx_SR |
| * register followed by a write access to the SPIx_CR1 register |
| * @rmtoll SR MODF LL_SPI_ClearFlag_MODF |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_ClearFlag_MODF(SPI_TypeDef *SPIx) |
| { |
| __IO uint32_t tmpreg_sr; |
| tmpreg_sr = SPIx->SR; |
| (void) tmpreg_sr; |
| CLEAR_BIT(SPIx->CR1, SPI_CR1_SPE); |
| } |
| |
| /** |
| * @brief Clear overrun error flag |
| * @note Clearing this flag is done by a read access to the SPIx_DR |
| * register followed by a read access to the SPIx_SR register |
| * @rmtoll SR OVR LL_SPI_ClearFlag_OVR |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_ClearFlag_OVR(SPI_TypeDef *SPIx) |
| { |
| __IO uint32_t tmpreg; |
| tmpreg = SPIx->DR; |
| (void) tmpreg; |
| tmpreg = SPIx->SR; |
| (void) tmpreg; |
| } |
| |
| /** |
| * @brief Clear frame format error flag |
| * @note Clearing this flag is done by reading SPIx_SR register |
| * @rmtoll SR FRE LL_SPI_ClearFlag_FRE |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_ClearFlag_FRE(SPI_TypeDef *SPIx) |
| { |
| __IO uint32_t tmpreg; |
| tmpreg = SPIx->SR; |
| (void) tmpreg; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EF_IT_Management Interrupt Management |
| * @{ |
| */ |
| |
| /** |
| * @brief Enable error interrupt |
| * @note This bit controls the generation of an interrupt when an error condition |
| * occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode). |
| * @rmtoll CR2 ERRIE LL_SPI_EnableIT_ERR |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_EnableIT_ERR(SPI_TypeDef *SPIx) |
| { |
| SET_BIT(SPIx->CR2, SPI_CR2_ERRIE); |
| } |
| |
| /** |
| * @brief Enable Rx buffer not empty interrupt |
| * @rmtoll CR2 RXNEIE LL_SPI_EnableIT_RXNE |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_EnableIT_RXNE(SPI_TypeDef *SPIx) |
| { |
| SET_BIT(SPIx->CR2, SPI_CR2_RXNEIE); |
| } |
| |
| /** |
| * @brief Enable Tx buffer empty interrupt |
| * @rmtoll CR2 TXEIE LL_SPI_EnableIT_TXE |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_EnableIT_TXE(SPI_TypeDef *SPIx) |
| { |
| SET_BIT(SPIx->CR2, SPI_CR2_TXEIE); |
| } |
| |
| /** |
| * @brief Disable error interrupt |
| * @note This bit controls the generation of an interrupt when an error condition |
| * occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode). |
| * @rmtoll CR2 ERRIE LL_SPI_DisableIT_ERR |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_DisableIT_ERR(SPI_TypeDef *SPIx) |
| { |
| CLEAR_BIT(SPIx->CR2, SPI_CR2_ERRIE); |
| } |
| |
| /** |
| * @brief Disable Rx buffer not empty interrupt |
| * @rmtoll CR2 RXNEIE LL_SPI_DisableIT_RXNE |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_DisableIT_RXNE(SPI_TypeDef *SPIx) |
| { |
| CLEAR_BIT(SPIx->CR2, SPI_CR2_RXNEIE); |
| } |
| |
| /** |
| * @brief Disable Tx buffer empty interrupt |
| * @rmtoll CR2 TXEIE LL_SPI_DisableIT_TXE |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_DisableIT_TXE(SPI_TypeDef *SPIx) |
| { |
| CLEAR_BIT(SPIx->CR2, SPI_CR2_TXEIE); |
| } |
| |
| /** |
| * @brief Check if error interrupt is enabled |
| * @rmtoll CR2 ERRIE LL_SPI_IsEnabledIT_ERR |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsEnabledIT_ERR(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->CR2, SPI_CR2_ERRIE) == (SPI_CR2_ERRIE)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Check if Rx buffer not empty interrupt is enabled |
| * @rmtoll CR2 RXNEIE LL_SPI_IsEnabledIT_RXNE |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsEnabledIT_RXNE(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->CR2, SPI_CR2_RXNEIE) == (SPI_CR2_RXNEIE)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Check if Tx buffer empty interrupt |
| * @rmtoll CR2 TXEIE LL_SPI_IsEnabledIT_TXE |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsEnabledIT_TXE(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->CR2, SPI_CR2_TXEIE) == (SPI_CR2_TXEIE)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EF_DMA_Management DMA Management |
| * @{ |
| */ |
| |
| /** |
| * @brief Enable DMA Rx |
| * @rmtoll CR2 RXDMAEN LL_SPI_EnableDMAReq_RX |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_EnableDMAReq_RX(SPI_TypeDef *SPIx) |
| { |
| SET_BIT(SPIx->CR2, SPI_CR2_RXDMAEN); |
| } |
| |
| /** |
| * @brief Disable DMA Rx |
| * @rmtoll CR2 RXDMAEN LL_SPI_DisableDMAReq_RX |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_DisableDMAReq_RX(SPI_TypeDef *SPIx) |
| { |
| CLEAR_BIT(SPIx->CR2, SPI_CR2_RXDMAEN); |
| } |
| |
| /** |
| * @brief Check if DMA Rx is enabled |
| * @rmtoll CR2 RXDMAEN LL_SPI_IsEnabledDMAReq_RX |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsEnabledDMAReq_RX(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->CR2, SPI_CR2_RXDMAEN) == (SPI_CR2_RXDMAEN)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Enable DMA Tx |
| * @rmtoll CR2 TXDMAEN LL_SPI_EnableDMAReq_TX |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_EnableDMAReq_TX(SPI_TypeDef *SPIx) |
| { |
| SET_BIT(SPIx->CR2, SPI_CR2_TXDMAEN); |
| } |
| |
| /** |
| * @brief Disable DMA Tx |
| * @rmtoll CR2 TXDMAEN LL_SPI_DisableDMAReq_TX |
| * @param SPIx SPI Instance |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_DisableDMAReq_TX(SPI_TypeDef *SPIx) |
| { |
| CLEAR_BIT(SPIx->CR2, SPI_CR2_TXDMAEN); |
| } |
| |
| /** |
| * @brief Check if DMA Tx is enabled |
| * @rmtoll CR2 TXDMAEN LL_SPI_IsEnabledDMAReq_TX |
| * @param SPIx SPI Instance |
| * @retval State of bit (1 or 0). |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_IsEnabledDMAReq_TX(const SPI_TypeDef *SPIx) |
| { |
| return ((READ_BIT(SPIx->CR2, SPI_CR2_TXDMAEN) == (SPI_CR2_TXDMAEN)) ? 1UL : 0UL); |
| } |
| |
| /** |
| * @brief Set parity of Last DMA reception |
| * @rmtoll CR2 LDMARX LL_SPI_SetDMAParity_RX |
| * @param SPIx SPI Instance |
| * @param Parity This parameter can be one of the following values: |
| * @arg @ref LL_SPI_DMA_PARITY_ODD |
| * @arg @ref LL_SPI_DMA_PARITY_EVEN |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetDMAParity_RX(SPI_TypeDef *SPIx, uint32_t Parity) |
| { |
| MODIFY_REG(SPIx->CR2, SPI_CR2_LDMARX, (Parity << SPI_CR2_LDMARX_Pos)); |
| } |
| |
| /** |
| * @brief Get parity configuration for Last DMA reception |
| * @rmtoll CR2 LDMARX LL_SPI_GetDMAParity_RX |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_DMA_PARITY_ODD |
| * @arg @ref LL_SPI_DMA_PARITY_EVEN |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetDMAParity_RX(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_LDMARX) >> SPI_CR2_LDMARX_Pos); |
| } |
| |
| /** |
| * @brief Set parity of Last DMA transmission |
| * @rmtoll CR2 LDMATX LL_SPI_SetDMAParity_TX |
| * @param SPIx SPI Instance |
| * @param Parity This parameter can be one of the following values: |
| * @arg @ref LL_SPI_DMA_PARITY_ODD |
| * @arg @ref LL_SPI_DMA_PARITY_EVEN |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_SetDMAParity_TX(SPI_TypeDef *SPIx, uint32_t Parity) |
| { |
| MODIFY_REG(SPIx->CR2, SPI_CR2_LDMATX, (Parity << SPI_CR2_LDMATX_Pos)); |
| } |
| |
| /** |
| * @brief Get parity configuration for Last DMA transmission |
| * @rmtoll CR2 LDMATX LL_SPI_GetDMAParity_TX |
| * @param SPIx SPI Instance |
| * @retval Returned value can be one of the following values: |
| * @arg @ref LL_SPI_DMA_PARITY_ODD |
| * @arg @ref LL_SPI_DMA_PARITY_EVEN |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_GetDMAParity_TX(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_LDMATX) >> SPI_CR2_LDMATX_Pos); |
| } |
| |
| /** |
| * @brief Get the data register address used for DMA transfer |
| * @rmtoll DR DR LL_SPI_DMA_GetRegAddr |
| * @param SPIx SPI Instance |
| * @retval Address of data register |
| */ |
| __STATIC_INLINE uint32_t LL_SPI_DMA_GetRegAddr(const SPI_TypeDef *SPIx) |
| { |
| return (uint32_t) &(SPIx->DR); |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup SPI_LL_EF_DATA_Management DATA Management |
| * @{ |
| */ |
| |
| /** |
| * @brief Read 8-Bits in the data register |
| * @rmtoll DR DR LL_SPI_ReceiveData8 |
| * @param SPIx SPI Instance |
| * @retval RxData Value between Min_Data=0x00 and Max_Data=0xFF |
| */ |
| __STATIC_INLINE uint8_t LL_SPI_ReceiveData8(SPI_TypeDef *SPIx) |
| { |
| return (*((__IO uint8_t *)&SPIx->DR)); |
| } |
| |
| /** |
| * @brief Read 16-Bits in the data register |
| * @rmtoll DR DR LL_SPI_ReceiveData16 |
| * @param SPIx SPI Instance |
| * @retval RxData Value between Min_Data=0x00 and Max_Data=0xFFFF |
| */ |
| __STATIC_INLINE uint16_t LL_SPI_ReceiveData16(SPI_TypeDef *SPIx) |
| { |
| return (uint16_t)(READ_REG(SPIx->DR)); |
| } |
| |
| /** |
| * @brief Write 8-Bits in the data register |
| * @rmtoll DR DR LL_SPI_TransmitData8 |
| * @param SPIx SPI Instance |
| * @param TxData Value between Min_Data=0x00 and Max_Data=0xFF |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_TransmitData8(SPI_TypeDef *SPIx, uint8_t TxData) |
| { |
| #if defined (__GNUC__) |
| __IO uint8_t *spidr = ((__IO uint8_t *)&SPIx->DR); |
| *spidr = TxData; |
| #else |
| *((__IO uint8_t *)&SPIx->DR) = TxData; |
| #endif /* __GNUC__ */ |
| } |
| |
| /** |
| * @brief Write 16-Bits in the data register |
| * @rmtoll DR DR LL_SPI_TransmitData16 |
| * @param SPIx SPI Instance |
| * @param TxData Value between Min_Data=0x00 and Max_Data=0xFFFF |
| * @retval None |
| */ |
| __STATIC_INLINE void LL_SPI_TransmitData16(SPI_TypeDef *SPIx, uint16_t TxData) |
| { |
| #if defined (__GNUC__) |
| __IO uint16_t *spidr = ((__IO uint16_t *)&SPIx->DR); |
| *spidr = TxData; |
| #else |
| SPIx->DR = TxData; |
| #endif /* __GNUC__ */ |
| } |
| |
| /** |
| * @} |
| */ |
| #if defined(USE_FULL_LL_DRIVER) |
| /** @defgroup SPI_LL_EF_Init Initialization and de-initialization functions |
| * @{ |
| */ |
| |
| ErrorStatus LL_SPI_DeInit(const SPI_TypeDef *SPIx); |
| ErrorStatus LL_SPI_Init(SPI_TypeDef *SPIx, LL_SPI_InitTypeDef *SPI_InitStruct); |
| void LL_SPI_StructInit(LL_SPI_InitTypeDef *SPI_InitStruct); |
| |
| /** |
| * @} |
| */ |
| #endif /* USE_FULL_LL_DRIVER */ |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* defined (SPI1) || defined (SPI2) || defined (SPI3) */ |
| |
| /** |
| * @} |
| */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* STM32L4xx_LL_SPI_H */ |
| |
