mbed official
mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
Diff: targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_ll_i2c.h
- Revision:
- 156:95d6b41a828b
- Child:
- 180:96ed750bd169
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_ll_i2c.h Mon Jan 16 15:03:32 2017 +0000
@@ -0,0 +1,2258 @@
+/**
+ ******************************************************************************
+ * @file stm32f0xx_ll_i2c.h
+ * @author MCD Application Team
+ * @version V1.4.0
+ * @date 27-May-2016
+ * @brief Header file of I2C LL module.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F0xx_LL_I2C_H
+#define __STM32F0xx_LL_I2C_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f0xx.h"
+
+/** @addtogroup STM32F0xx_LL_Driver
+ * @{
+ */
+
+#if defined (I2C1) || defined (I2C2)
+
+/** @defgroup I2C_LL I2C
+ * @{
+ */
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+
+/* Private constants ---------------------------------------------------------*/
+/** @defgroup I2C_LL_Private_Constants I2C Private Constants
+ * @{
+ */
+/* Defines used for the bit position in the register and perform offsets */
+#define I2C_POSITION_CR1_DNF (uint32_t)8U
+#define I2C_POSITION_CR2_NBYTES (uint32_t)16U
+#define I2C_POSITION_TIMINGR_PRESC (uint32_t)28U
+#define I2C_POSITION_TIMINGR_SCLDEL (uint32_t)20U
+#define I2C_POSITION_TIMINGR_SDADEL (uint32_t)16U
+#define I2C_POSITION_TIMINGR_SCLH (uint32_t)8U
+#define I2C_POSITION_TIMINGR_SCLL (uint32_t)0U
+#define I2C_POSITION_ISR_ADDCODE (uint32_t)17U
+#define I2C_POSITION_TIMEOUTR_TIMEOUTB (uint32_t)16U
+/**
+ * @}
+ */
+
+/* Private macros ------------------------------------------------------------*/
+#if defined(USE_FULL_LL_DRIVER)
+/** @defgroup I2C_LL_Private_Macros I2C Private Macros
+ * @{
+ */
+/**
+ * @}
+ */
+#endif /*USE_FULL_LL_DRIVER*/
+
+/* Exported types ------------------------------------------------------------*/
+#if defined(USE_FULL_LL_DRIVER)
+/** @defgroup I2C_LL_ES_INIT I2C Exported Init structure
+ * @{
+ */
+typedef struct
+{
+ uint32_t PeripheralMode; /*!< Specifies the peripheral mode.
+ This parameter can be a value of @ref I2C_LL_EC_PERIPHERAL_MODE
+
+ This feature can be modified afterwards using unitary function @ref LL_I2C_SetMode(). */
+
+ uint32_t Timing; /*!< Specifies the SDA setup, hold time and the SCL high, low period values.
+ This parameter must be set by referring to the STM32CubeMX Tool and
+ the helper macro @ref __LL_I2C_CONVERT_TIMINGS()
+
+ This feature can be modified afterwards using unitary function @ref LL_I2C_SetTiming(). */
+
+ uint32_t AnalogFilter; /*!< Enables or disables analog noise filter.
+ This parameter can be a value of @ref I2C_LL_EC_ANALOGFILTER_SELECTION
+
+ This feature can be modified afterwards using unitary functions @ref LL_I2C_EnableAnalogFilter() or LL_I2C_DisableAnalogFilter(). */
+
+ uint32_t DigitalFilter; /*!< Configures the digital noise filter.
+ This parameter can be a number between Min_Data = 0x00 and Max_Data = 0x0F
+
+ This feature can be modified afterwards using unitary function @ref LL_I2C_SetDigitalFilter(). */
+
+ uint32_t OwnAddress1; /*!< Specifies the device own address 1.
+ This parameter must be a value between Min_Data = 0x00 and Max_Data = 0x3FF
+
+ This feature can be modified afterwards using unitary function @ref LL_I2C_SetOwnAddress1(). */
+
+ uint32_t TypeAcknowledge; /*!< Specifies the ACKnowledge or Non ACKnowledge condition after the address receive match code or next received byte.
+ This parameter can be a value of @ref I2C_LL_EC_I2C_ACKNOWLEDGE
+
+ This feature can be modified afterwards using unitary function @ref LL_I2C_AcknowledgeNextData(). */
+
+ uint32_t OwnAddrSize; /*!< Specifies the device own address 1 size (7-bit or 10-bit).
+ This parameter can be a value of @ref I2C_LL_EC_OWNADDRESS1
+
+ This feature can be modified afterwards using unitary function @ref LL_I2C_SetOwnAddress1(). */
+} LL_I2C_InitTypeDef;
+/**
+ * @}
+ */
+#endif /*USE_FULL_LL_DRIVER*/
+
+/* Exported constants --------------------------------------------------------*/
+/** @defgroup I2C_LL_Exported_Constants I2C Exported Constants
+ * @{
+ */
+
+/** @defgroup I2C_LL_EC_CLEAR_FLAG Clear Flags Defines
+ * @brief Flags defines which can be used with LL_I2C_WriteReg function
+ * @{
+ */
+#define LL_I2C_ICR_ADDRCF I2C_ICR_ADDRCF /*!< Address Matched flag */
+#define LL_I2C_ICR_NACKCF I2C_ICR_NACKCF /*!< Not Acknowledge flag */
+#define LL_I2C_ICR_STOPCF I2C_ICR_STOPCF /*!< Stop detection flag */
+#define LL_I2C_ICR_BERRCF I2C_ICR_BERRCF /*!< Bus error flag */
+#define LL_I2C_ICR_ARLOCF I2C_ICR_ARLOCF /*!< Arbitration Lost flag */
+#define LL_I2C_ICR_OVRCF I2C_ICR_OVRCF /*!< Overrun/Underrun flag */
+#define LL_I2C_ICR_PECCF I2C_ICR_PECCF /*!< PEC error flag */
+#define LL_I2C_ICR_TIMOUTCF I2C_ICR_TIMOUTCF /*!< Timeout detection flag */
+#define LL_I2C_ICR_ALERTCF I2C_ICR_ALERTCF /*!< Alert flag */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_GET_FLAG Get Flags Defines
+ * @brief Flags defines which can be used with LL_I2C_ReadReg function
+ * @{
+ */
+#define LL_I2C_ISR_TXE I2C_ISR_TXE /*!< Transmit data register empty */
+#define LL_I2C_ISR_TXIS I2C_ISR_TXIS /*!< Transmit interrupt status */
+#define LL_I2C_ISR_RXNE I2C_ISR_RXNE /*!< Receive data register not empty */
+#define LL_I2C_ISR_ADDR I2C_ISR_ADDR /*!< Address matched (slave mode) */
+#define LL_I2C_ISR_NACKF I2C_ISR_NACKF /*!< Not Acknowledge received flag */
+#define LL_I2C_ISR_STOPF I2C_ISR_STOPF /*!< Stop detection flag */
+#define LL_I2C_ISR_TC I2C_ISR_TC /*!< Transfer Complete (master mode) */
+#define LL_I2C_ISR_TCR I2C_ISR_TCR /*!< Transfer Complete Reload */
+#define LL_I2C_ISR_BERR I2C_ISR_BERR /*!< Bus error */
+#define LL_I2C_ISR_ARLO I2C_ISR_ARLO /*!< Arbitration lost */
+#define LL_I2C_ISR_OVR I2C_ISR_OVR /*!< Overrun/Underrun (slave mode) */
+#define LL_I2C_ISR_PECERR I2C_ISR_PECERR /*!< PEC Error in reception (SMBus mode) */
+#define LL_I2C_ISR_TIMEOUT I2C_ISR_TIMEOUT /*!< Timeout detection flag (SMBus mode) */
+#define LL_I2C_ISR_ALERT I2C_ISR_ALERT /*!< SMBus alert (SMBus mode) */
+#define LL_I2C_ISR_BUSY I2C_ISR_BUSY /*!< Bus busy */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_IT IT Defines
+ * @brief IT defines which can be used with LL_I2C_ReadReg and LL_I2C_WriteReg functions
+ * @{
+ */
+#define LL_I2C_CR1_TXIE I2C_CR1_TXIE /*!< TX Interrupt enable */
+#define LL_I2C_CR1_RXIE I2C_CR1_RXIE /*!< RX Interrupt enable */
+#define LL_I2C_CR1_ADDRIE I2C_CR1_ADDRIE /*!< Address match Interrupt enable (slave only) */
+#define LL_I2C_CR1_NACKIE I2C_CR1_NACKIE /*!< Not acknowledge received Interrupt enable */
+#define LL_I2C_CR1_STOPIE I2C_CR1_STOPIE /*!< STOP detection Interrupt enable */
+#define LL_I2C_CR1_TCIE I2C_CR1_TCIE /*!< Transfer Complete interrupt enable */
+#define LL_I2C_CR1_ERRIE I2C_CR1_ERRIE /*!< Error interrupts enable */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_PERIPHERAL_MODE Peripheral Mode
+ * @{
+ */
+#define LL_I2C_MODE_I2C ((uint32_t)0x00000000U) /*!< I2C Master or Slave mode */
+#define LL_I2C_MODE_SMBUS_HOST I2C_CR1_SMBHEN /*!< SMBus Host address acknowledge */
+#define LL_I2C_MODE_SMBUS_DEVICE ((uint32_t)0x00000000U) /*!< SMBus Device default mode (Default address not acknowledge) */
+#define LL_I2C_MODE_SMBUS_DEVICE_ARP I2C_CR1_SMBDEN /*!< SMBus Device Default address acknowledge */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_ANALOGFILTER_SELECTION Analog Filter Selection
+ * @{
+ */
+#define LL_I2C_ANALOGFILTER_ENABLE ((uint32_t)0x00000000U) /*!< Analog filter is enabled. */
+#define LL_I2C_ANALOGFILTER_DISABLE I2C_CR1_ANFOFF /*!< Analog filter is disabled. */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_ADDRESSING_MODE Master Addressing Mode
+ * @{
+ */
+#define LL_I2C_ADDRESSING_MODE_7BIT ((uint32_t) 0x00000000U) /*!< Master operates in 7-bit addressing mode. */
+#define LL_I2C_ADDRESSING_MODE_10BIT I2C_CR2_ADD10 /*!< Master operates in 10-bit addressing mode.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_OWNADDRESS1 Own Address 1 Length
+ * @{
+ */
+#define LL_I2C_OWNADDRESS1_7BIT ((uint32_t)0x00000000U) /*!< Own address 1 is a 7-bit address. */
+#define LL_I2C_OWNADDRESS1_10BIT I2C_OAR1_OA1MODE /*!< Own address 1 is a 10-bit address.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_OWNADDRESS2 Own Address 2 Masks
+ * @{
+ */
+#define LL_I2C_OWNADDRESS2_NOMASK I2C_OAR2_OA2NOMASK /*!< Own Address2 No mask. */
+#define LL_I2C_OWNADDRESS2_MASK01 I2C_OAR2_OA2MASK01 /*!< Only Address2 bits[7:2] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK02 I2C_OAR2_OA2MASK02 /*!< Only Address2 bits[7:3] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK03 I2C_OAR2_OA2MASK03 /*!< Only Address2 bits[7:4] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK04 I2C_OAR2_OA2MASK04 /*!< Only Address2 bits[7:5] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK05 I2C_OAR2_OA2MASK05 /*!< Only Address2 bits[7:6] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK06 I2C_OAR2_OA2MASK06 /*!< Only Address2 bits[7] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK07 I2C_OAR2_OA2MASK07 /*!< No comparison is done. All Address2 are acknowledged.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_I2C_ACKNOWLEDGE Acknowledge Generation
+ * @{
+ */
+#define LL_I2C_ACK ((uint32_t) 0x00000000U) /*!< ACK is sent after current received byte. */
+#define LL_I2C_NACK I2C_CR2_NACK /*!< NACK is sent after current received byte.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_ADDRSLAVE Slave Address Length
+ * @{
+ */
+#define LL_I2C_ADDRSLAVE_7BIT ((uint32_t)0x00000000U) /*!< Slave Address in 7-bit. */
+#define LL_I2C_ADDRSLAVE_10BIT I2C_CR2_ADD10 /*!< Slave Address in 10-bit.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_REQUEST Transfer Request Direction
+ * @{
+ */
+#define LL_I2C_REQUEST_WRITE ((uint32_t)0x00000000U) /*!< Master request a write transfer. */
+#define LL_I2C_REQUEST_READ I2C_CR2_RD_WRN /*!< Master request a read transfer. */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_MODE Transfer End Mode
+ * @{
+ */
+#define LL_I2C_MODE_RELOAD I2C_CR2_RELOAD /*!< Enable I2C Reload mode. */
+#define LL_I2C_MODE_AUTOEND I2C_CR2_AUTOEND /*!< Enable I2C Automatic end mode with no HW PEC comparison. */
+#define LL_I2C_MODE_SOFTEND ((uint32_t)0x00000000U) /*!< Enable I2C Software end mode with no HW PEC comparison. */
+#define LL_I2C_MODE_SMBUS_RELOAD LL_I2C_MODE_RELOAD /*!< Enable SMBUS Automatic end mode with HW PEC comparison. */
+#define LL_I2C_MODE_SMBUS_AUTOEND_NO_PEC LL_I2C_MODE_AUTOEND /*!< Enable SMBUS Automatic end mode with HW PEC comparison. */
+#define LL_I2C_MODE_SMBUS_SOFTEND_NO_PEC LL_I2C_MODE_SOFTEND /*!< Enable SMBUS Software end mode with HW PEC comparison. */
+#define LL_I2C_MODE_SMBUS_AUTOEND_WITH_PEC (uint32_t)(LL_I2C_MODE_AUTOEND | I2C_CR2_PECBYTE) /*!< Enable SMBUS Automatic end mode with HW PEC comparison. */
+#define LL_I2C_MODE_SMBUS_SOFTEND_WITH_PEC (uint32_t)(LL_I2C_MODE_SOFTEND | I2C_CR2_PECBYTE) /*!< Enable SMBUS Software end mode with HW PEC comparison. */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_GENERATE Start And Stop Generation
+ * @{
+ */
+#define LL_I2C_GENERATE_NOSTARTSTOP ((uint32_t)0x00000000U) /*!< Don't Generate Stop and Start condition. */
+#define LL_I2C_GENERATE_STOP I2C_CR2_STOP /*!< Generate Stop condition (Size should be set to 0). */
+#define LL_I2C_GENERATE_START_READ (uint32_t)(I2C_CR2_START | I2C_CR2_RD_WRN) /*!< Generate Start for read request. */
+#define LL_I2C_GENERATE_START_WRITE I2C_CR2_START /*!< Generate Start for write request. */
+#define LL_I2C_GENERATE_RESTART_7BIT_READ (uint32_t)(I2C_CR2_START | I2C_CR2_RD_WRN) /*!< Generate Restart for read request, slave 7Bit address. */
+#define LL_I2C_GENERATE_RESTART_7BIT_WRITE I2C_CR2_START /*!< Generate Restart for write request, slave 7Bit address. */
+#define LL_I2C_GENERATE_RESTART_10BIT_READ (uint32_t)(I2C_CR2_START | I2C_CR2_RD_WRN | I2C_CR2_HEAD10R) /*!< Generate Restart for read request, slave 10Bit address. */
+#define LL_I2C_GENERATE_RESTART_10BIT_WRITE I2C_CR2_START /*!< Generate Restart for write request, slave 10Bit address.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_DIRECTION Read Write Direction
+ * @{
+ */
+#define LL_I2C_DIRECTION_WRITE ((uint32_t)0x00000000U) /*!< Write transfer request by master, slave enters receiver mode. */
+#define LL_I2C_DIRECTION_READ I2C_ISR_DIR /*!< Read transfer request by master, slave enters transmitter mode.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_DMA_REG_DATA DMA Register Data
+ * @{
+ */
+#define LL_I2C_DMA_REG_DATA_TRANSMIT ((uint32_t)0x00000000U) /*!< Get address of data register used for transmission */
+#define LL_I2C_DMA_REG_DATA_RECEIVE ((uint32_t)0x00000001U) /*!< Get address of data register used for reception */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_SMBUS_TIMEOUTA_MODE SMBus TimeoutA Mode SCL SDA Timeout
+ * @{
+ */
+#define LL_I2C_SMBUS_TIMEOUTA_MODE_SCL_LOW ((uint32_t) 0x00000000U) /*!< TimeoutA is used to detect SCL low level timeout. */
+#define LL_I2C_SMBUS_TIMEOUTA_MODE_SDA_SCL_HIGH I2C_TIMEOUTR_TIDLE /*!< TimeoutA is used to detect both SCL and SDA high level timeout.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_SMBUS_TIMEOUT_SELECTION SMBus Timeout Selection
+ * @{
+ */
+#define LL_I2C_SMBUS_TIMEOUTA I2C_TIMEOUTR_TIMOUTEN /*!< TimeoutA enable bit */
+#define LL_I2C_SMBUS_TIMEOUTB I2C_TIMEOUTR_TEXTEN /*!< TimeoutB (extended clock) enable bit */
+#define LL_I2C_SMBUS_ALL_TIMEOUT (uint32_t)(I2C_TIMEOUTR_TIMOUTEN | I2C_TIMEOUTR_TEXTEN) /*!< TimeoutA and TimeoutB (extended clock) enable bits */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* Exported macro ------------------------------------------------------------*/
+/** @defgroup I2C_LL_Exported_Macros I2C Exported Macros
+ * @{
+ */
+
+/** @defgroup I2C_LL_EM_WRITE_READ Common Write and read registers Macros
+ * @{
+ */
+
+/**
+ * @brief Write a value in I2C register
+ * @param __INSTANCE__ I2C Instance
+ * @param __REG__ Register to be written
+ * @param __VALUE__ Value to be written in the register
+ * @retval None
+ */
+#define LL_I2C_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
+
+/**
+ * @brief Read a value in I2C register
+ * @param __INSTANCE__ I2C Instance
+ * @param __REG__ Register to be read
+ * @retval Register value
+ */
+#define LL_I2C_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EM_CONVERT_TIMINGS Convert SDA SCL timings
+ * @{
+ */
+/**
+ * @brief Configure the SDA setup, hold time and the SCL high, low period.
+ * @param __PRESCALER__ This parameter must be a value between Min_Data=0 and Max_Data=0xF.
+ * @param __DATA_SETUP_TIME__ This parameter must be a value between Min_Data=0 and Max_Data=0xF. (tscldel = (SCLDEL+1)xtpresc)
+ * @param __DATA_HOLD_TIME__ This parameter must be a value between Min_Data=0 and Max_Data=0xF. (tsdadel = SDADELxtpresc)
+ * @param __CLOCK_HIGH_PERIOD__ This parameter must be a value between Min_Data=0 and Max_Data=0xFF. (tsclh = (SCLH+1)xtpresc)
+ * @param __CLOCK_LOW_PERIOD__ This parameter must be a value between Min_Data=0 and Max_Data=0xFF. (tscll = (SCLL+1)xtpresc)
+ * @retval Value between Min_Data=0 and Max_Data=0xFFFFFFFF
+ */
+#define __LL_I2C_CONVERT_TIMINGS(__PRESCALER__, __DATA_SETUP_TIME__, __DATA_HOLD_TIME__, __CLOCK_HIGH_PERIOD__, __CLOCK_LOW_PERIOD__) \
+ ((((uint32_t)(__PRESCALER__) << I2C_POSITION_TIMINGR_PRESC) & I2C_TIMINGR_PRESC) | \
+ (((uint32_t)(__DATA_SETUP_TIME__) << I2C_POSITION_TIMINGR_SCLDEL) & I2C_TIMINGR_SCLDEL) | \
+ (((uint32_t)(__DATA_HOLD_TIME__) << I2C_POSITION_TIMINGR_SDADEL) & I2C_TIMINGR_SDADEL) | \
+ (((uint32_t)(__CLOCK_HIGH_PERIOD__) << I2C_POSITION_TIMINGR_SCLH) & I2C_TIMINGR_SCLH) | \
+ (((uint32_t)(__CLOCK_LOW_PERIOD__) << I2C_POSITION_TIMINGR_SCLL) & I2C_TIMINGR_SCLL))
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup I2C_LL_Exported_Functions I2C Exported Functions
+ * @{
+ */
+
+/** @defgroup I2C_LL_EF_Configuration Configuration
+ * @{
+ */
+
+/**
+ * @brief Enable I2C peripheral (PE = 1).
+ * @rmtoll CR1 PE LL_I2C_Enable
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_Enable(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_PE);
+}
+
+/**
+ * @brief Disable I2C peripheral (PE = 0).
+ * @note When PE = 0, the I2C SCL and SDA lines are released.
+ * Internal state machines and status bits are put back to their reset value.
+ * When cleared, PE must be kept low for at least 3 APB clock cycles.
+ * @rmtoll CR1 PE LL_I2C_Disable
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_Disable(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_PE);
+}
+
+/**
+ * @brief Check if the I2C peripheral is enabled or disabled.
+ * @rmtoll CR1 PE LL_I2C_IsEnabled
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabled(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_PE) == (I2C_CR1_PE));
+}
+
+/**
+ * @brief Configure Noise Filters (Analog and Digital).
+ * @note If the analog filter is also enabled, the digital filter is added to analog filter.
+ * The filters can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 ANFOFF LL_I2C_ConfigFilters\n
+ * CR1 DNF LL_I2C_ConfigFilters
+ * @param I2Cx I2C Instance.
+ * @param AnalogFilter This parameter can be one of the following values:
+ * @arg @ref LL_I2C_ANALOGFILTER_ENABLE
+ * @arg @ref LL_I2C_ANALOGFILTER_DISABLE
+ * @param DigitalFilter This parameter must be a value between Min_Data=0x00 (Digital filter disabled) and Max_Data=0x0F (Digital filter enabled and filtering capability up to 15*ti2cclk).
+ * This parameter is used to configure the digital noise filter on SDA and SCL input.
+ * The digital filter will filter spikes with a length of up to DNF[3:0]*ti2cclk.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ConfigFilters(I2C_TypeDef *I2Cx, uint32_t AnalogFilter, uint32_t DigitalFilter)
+{
+ MODIFY_REG(I2Cx->CR1, I2C_CR1_ANFOFF | I2C_CR1_DNF, AnalogFilter | (DigitalFilter << I2C_POSITION_CR1_DNF));
+}
+
+/**
+ * @brief Configure Digital Noise Filter.
+ * @note If the analog filter is also enabled, the digital filter is added to analog filter.
+ * This filter can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 DNF LL_I2C_SetDigitalFilter
+ * @param I2Cx I2C Instance.
+ * @param DigitalFilter This parameter must be a value between Min_Data=0x00 (Digital filter disabled) and Max_Data=0x0F (Digital filter enabled and filtering capability up to 15*ti2cclk).
+ * This parameter is used to configure the digital noise filter on SDA and SCL input.
+ * The digital filter will filter spikes with a length of up to DNF[3:0]*ti2cclk.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetDigitalFilter(I2C_TypeDef *I2Cx, uint32_t DigitalFilter)
+{
+ MODIFY_REG(I2Cx->CR1, I2C_CR1_DNF, DigitalFilter << I2C_POSITION_CR1_DNF);
+}
+
+/**
+ * @brief Get the current Digital Noise Filter configuration.
+ * @rmtoll CR1 DNF LL_I2C_GetDigitalFilter
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0xF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetDigitalFilter(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR1, I2C_CR1_DNF) >> I2C_POSITION_CR1_DNF);
+}
+
+/**
+ * @brief Enable Analog Noise Filter.
+ * @note This filter can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 ANFOFF LL_I2C_EnableAnalogFilter
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableAnalogFilter(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_ANFOFF);
+}
+
+/**
+ * @brief Disable Analog Noise Filter.
+ * @note This filter can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 ANFOFF LL_I2C_DisableAnalogFilter
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableAnalogFilter(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_ANFOFF);
+}
+
+/**
+ * @brief Check if Analog Noise Filter is enabled or disabled.
+ * @rmtoll CR1 ANFOFF LL_I2C_IsEnabledAnalogFilter
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledAnalogFilter(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_ANFOFF) != (I2C_CR1_ANFOFF));
+}
+
+/**
+ * @brief Enable DMA transmission requests.
+ * @rmtoll CR1 TXDMAEN LL_I2C_EnableDMAReq_TX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableDMAReq_TX(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_TXDMAEN);
+}
+
+/**
+ * @brief Disable DMA transmission requests.
+ * @rmtoll CR1 TXDMAEN LL_I2C_DisableDMAReq_TX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableDMAReq_TX(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_TXDMAEN);
+}
+
+/**
+ * @brief Check if DMA transmission requests are enabled or disabled.
+ * @rmtoll CR1 TXDMAEN LL_I2C_IsEnabledDMAReq_TX
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledDMAReq_TX(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_TXDMAEN) == (I2C_CR1_TXDMAEN));
+}
+
+/**
+ * @brief Enable DMA reception requests.
+ * @rmtoll CR1 RXDMAEN LL_I2C_EnableDMAReq_RX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableDMAReq_RX(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_RXDMAEN);
+}
+
+/**
+ * @brief Disable DMA reception requests.
+ * @rmtoll CR1 RXDMAEN LL_I2C_DisableDMAReq_RX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableDMAReq_RX(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_RXDMAEN);
+}
+
+/**
+ * @brief Check if DMA reception requests are enabled or disabled.
+ * @rmtoll CR1 RXDMAEN LL_I2C_IsEnabledDMAReq_RX
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledDMAReq_RX(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_RXDMAEN) == (I2C_CR1_RXDMAEN));
+}
+
+/**
+ * @brief Get the data register address used for DMA transfer
+ * @rmtoll TXDR TXDATA LL_I2C_DMA_GetRegAddr\n
+ * RXDR RXDATA LL_I2C_DMA_GetRegAddr
+ * @param I2Cx I2C Instance
+ * @param Direction This parameter can be one of the following values:
+ * @arg @ref LL_I2C_DMA_REG_DATA_TRANSMIT
+ * @arg @ref LL_I2C_DMA_REG_DATA_RECEIVE
+ * @retval Address of data register
+ */
+__STATIC_INLINE uint32_t LL_I2C_DMA_GetRegAddr(I2C_TypeDef *I2Cx, uint32_t Direction)
+{
+ register uint32_t data_reg_addr = 0U;
+
+ if (Direction == LL_I2C_DMA_REG_DATA_TRANSMIT)
+ {
+ /* return address of TXDR register */
+ data_reg_addr = (uint32_t) & (I2Cx->TXDR);
+ }
+ else
+ {
+ /* return address of RXDR register */
+ data_reg_addr = (uint32_t) & (I2Cx->RXDR);
+ }
+
+ return data_reg_addr;
+}
+
+/**
+ * @brief Enable Clock stretching.
+ * @note This bit can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 NOSTRETCH LL_I2C_EnableClockStretching
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableClockStretching(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_NOSTRETCH);
+}
+
+/**
+ * @brief Disable Clock stretching.
+ * @note This bit can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 NOSTRETCH LL_I2C_DisableClockStretching
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableClockStretching(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_NOSTRETCH);
+}
+
+/**
+ * @brief Check if Clock stretching is enabled or disabled.
+ * @rmtoll CR1 NOSTRETCH LL_I2C_IsEnabledClockStretching
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledClockStretching(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_NOSTRETCH) != (I2C_CR1_NOSTRETCH));
+}
+
+/**
+ * @brief Enable hardware byte control in slave mode.
+ * @rmtoll CR1 SBC LL_I2C_EnableSlaveByteControl
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableSlaveByteControl(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_SBC);
+}
+
+/**
+ * @brief Disable hardware byte control in slave mode.
+ * @rmtoll CR1 SBC LL_I2C_DisableSlaveByteControl
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableSlaveByteControl(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_SBC);
+}
+
+/**
+ * @brief Check if hardware byte control in slave mode is enabled or disabled.
+ * @rmtoll CR1 SBC LL_I2C_IsEnabledSlaveByteControl
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledSlaveByteControl(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_SBC) == (I2C_CR1_SBC));
+}
+
+#if defined(I2C_CR1_WUPEN)
+/**
+ * @brief Enable Wakeup from STOP.
+ * @note Macro @ref IS_I2C_WAKEUP_FROMSTOP_INSTANCE(I2Cx) can be used to check whether or not
+ * WakeUpFromStop feature is supported by the I2Cx Instance.
+ * @note This bit can only be programmed when Digital Filter is disabled.
+ * @rmtoll CR1 WUPEN LL_I2C_EnableWakeUpFromStop
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableWakeUpFromStop(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_WUPEN);
+}
+
+/**
+ * @brief Disable Wakeup from STOP.
+ * @note Macro @ref IS_I2C_WAKEUP_FROMSTOP_INSTANCE(I2Cx) can be used to check whether or not
+ * WakeUpFromStop feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 WUPEN LL_I2C_DisableWakeUpFromStop
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableWakeUpFromStop(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_WUPEN);
+}
+
+/**
+ * @brief Check if Wakeup from STOP is enabled or disabled.
+ * @note Macro @ref IS_I2C_WAKEUP_FROMSTOP_INSTANCE(I2Cx) can be used to check whether or not
+ * WakeUpFromStop feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 WUPEN LL_I2C_IsEnabledWakeUpFromStop
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledWakeUpFromStop(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_WUPEN) == (I2C_CR1_WUPEN));
+}
+#endif
+
+/**
+ * @brief Enable General Call.
+ * @note When enabled the Address 0x00 is ACKed.
+ * @rmtoll CR1 GCEN LL_I2C_EnableGeneralCall
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableGeneralCall(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_GCEN);
+}
+
+/**
+ * @brief Disable General Call.
+ * @note When disabled the Address 0x00 is NACKed.
+ * @rmtoll CR1 GCEN LL_I2C_DisableGeneralCall
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableGeneralCall(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_GCEN);
+}
+
+/**
+ * @brief Check if General Call is enabled or disabled.
+ * @rmtoll CR1 GCEN LL_I2C_IsEnabledGeneralCall
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledGeneralCall(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_GCEN) == (I2C_CR1_GCEN));
+}
+
+/**
+ * @brief Configure the Master to operate in 7-bit or 10-bit addressing mode.
+ * @note Changing this bit is not allowed, when the START bit is set.
+ * @rmtoll CR2 ADD10 LL_I2C_SetMasterAddressingMode
+ * @param I2Cx I2C Instance.
+ * @param AddressingMode This parameter can be one of the following values:
+ * @arg @ref LL_I2C_ADDRESSING_MODE_7BIT
+ * @arg @ref LL_I2C_ADDRESSING_MODE_10BIT
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetMasterAddressingMode(I2C_TypeDef *I2Cx, uint32_t AddressingMode)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_ADD10, AddressingMode);
+}
+
+/**
+ * @brief Get the Master addressing mode.
+ * @rmtoll CR2 ADD10 LL_I2C_GetMasterAddressingMode
+ * @param I2Cx I2C Instance.
+ * @retval Returned value can be one of the following values:
+ * @arg @ref LL_I2C_ADDRESSING_MODE_7BIT
+ * @arg @ref LL_I2C_ADDRESSING_MODE_10BIT
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetMasterAddressingMode(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR2, I2C_CR2_ADD10));
+}
+
+/**
+ * @brief Set the Own Address1.
+ * @rmtoll OAR1 OA1 LL_I2C_SetOwnAddress1\n
+ * OAR1 OA1MODE LL_I2C_SetOwnAddress1
+ * @param I2Cx I2C Instance.
+ * @param OwnAddress1 This parameter must be a value between Min_Data=0 and Max_Data=0x3FF.
+ * @param OwnAddrSize This parameter can be one of the following values:
+ * @arg @ref LL_I2C_OWNADDRESS1_7BIT
+ * @arg @ref LL_I2C_OWNADDRESS1_10BIT
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetOwnAddress1(I2C_TypeDef *I2Cx, uint32_t OwnAddress1, uint32_t OwnAddrSize)
+{
+ MODIFY_REG(I2Cx->OAR1, I2C_OAR1_OA1 | I2C_OAR1_OA1MODE, OwnAddress1 | OwnAddrSize);
+}
+
+/**
+ * @brief Enable acknowledge on Own Address1 match address.
+ * @rmtoll OAR1 OA1EN LL_I2C_EnableOwnAddress1
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableOwnAddress1(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->OAR1, I2C_OAR1_OA1EN);
+}
+
+/**
+ * @brief Disable acknowledge on Own Address1 match address.
+ * @rmtoll OAR1 OA1EN LL_I2C_DisableOwnAddress1
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableOwnAddress1(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->OAR1, I2C_OAR1_OA1EN);
+}
+
+/**
+ * @brief Check if Own Address1 acknowledge is enabled or disabled.
+ * @rmtoll OAR1 OA1EN LL_I2C_IsEnabledOwnAddress1
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledOwnAddress1(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->OAR1, I2C_OAR1_OA1EN) == (I2C_OAR1_OA1EN));
+}
+
+/**
+ * @brief Set the 7bits Own Address2.
+ * @note This action has no effect if own address2 is enabled.
+ * @rmtoll OAR2 OA2 LL_I2C_SetOwnAddress2\n
+ * OAR2 OA2MSK LL_I2C_SetOwnAddress2
+ * @param I2Cx I2C Instance.
+ * @param OwnAddress2 Value between Min_Data=0 and Max_Data=0x7F.
+ * @param OwnAddrMask This parameter can be one of the following values:
+ * @arg @ref LL_I2C_OWNADDRESS2_NOMASK
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK01
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK02
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK03
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK04
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK05
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK06
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK07
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetOwnAddress2(I2C_TypeDef *I2Cx, uint32_t OwnAddress2, uint32_t OwnAddrMask)
+{
+ MODIFY_REG(I2Cx->OAR2, I2C_OAR2_OA2 | I2C_OAR2_OA2MSK, OwnAddress2 | OwnAddrMask);
+}
+
+/**
+ * @brief Enable acknowledge on Own Address2 match address.
+ * @rmtoll OAR2 OA2EN LL_I2C_EnableOwnAddress2
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableOwnAddress2(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->OAR2, I2C_OAR2_OA2EN);
+}
+
+/**
+ * @brief Disable acknowledge on Own Address2 match address.
+ * @rmtoll OAR2 OA2EN LL_I2C_DisableOwnAddress2
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableOwnAddress2(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->OAR2, I2C_OAR2_OA2EN);
+}
+
+/**
+ * @brief Check if Own Address1 acknowledge is enabled or disabled.
+ * @rmtoll OAR2 OA2EN LL_I2C_IsEnabledOwnAddress2
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledOwnAddress2(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->OAR2, I2C_OAR2_OA2EN) == (I2C_OAR2_OA2EN));
+}
+
+/**
+ * @brief Configure the SDA setup, hold time and the SCL high, low period.
+ * @note This bit can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll TIMINGR TIMINGR LL_I2C_SetTiming
+ * @param I2Cx I2C Instance.
+ * @param Timing This parameter must be a value between Min_Data=0 and Max_Data=0xFFFFFFFF.
+ * @note This parameter is computed with the STM32CubeMX Tool.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetTiming(I2C_TypeDef *I2Cx, uint32_t Timing)
+{
+ WRITE_REG(I2Cx->TIMINGR, Timing);
+}
+
+/**
+ * @brief Get the Timing Prescaler setting.
+ * @rmtoll TIMINGR PRESC LL_I2C_GetTimingPrescaler
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0xF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetTimingPrescaler(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_PRESC) >> I2C_POSITION_TIMINGR_PRESC);
+}
+
+/**
+ * @brief Get the SCL low period setting.
+ * @rmtoll TIMINGR SCLL LL_I2C_GetClockLowPeriod
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x00 and Max_Data=0xFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetClockLowPeriod(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SCLL) >> I2C_POSITION_TIMINGR_SCLL);
+}
+
+/**
+ * @brief Get the SCL high period setting.
+ * @rmtoll TIMINGR SCLH LL_I2C_GetClockHighPeriod
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x00 and Max_Data=0xFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetClockHighPeriod(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SCLH) >> I2C_POSITION_TIMINGR_SCLH);
+}
+
+/**
+ * @brief Get the SDA hold time.
+ * @rmtoll TIMINGR SDADEL LL_I2C_GetDataHoldTime
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0xF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetDataHoldTime(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SDADEL) >> I2C_POSITION_TIMINGR_SDADEL);
+}
+
+/**
+ * @brief Get the SDA setup time.
+ * @rmtoll TIMINGR SCLDEL LL_I2C_GetDataSetupTime
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0xF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetDataSetupTime(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SCLDEL) >> I2C_POSITION_TIMINGR_SCLDEL);
+}
+
+/**
+ * @brief Configure peripheral mode.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 SMBHEN LL_I2C_SetMode\n
+ * CR1 SMBDEN LL_I2C_SetMode
+ * @param I2Cx I2C Instance.
+ * @param PeripheralMode This parameter can be one of the following values:
+ * @arg @ref LL_I2C_MODE_I2C
+ * @arg @ref LL_I2C_MODE_SMBUS_HOST
+ * @arg @ref LL_I2C_MODE_SMBUS_DEVICE
+ * @arg @ref LL_I2C_MODE_SMBUS_DEVICE_ARP
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetMode(I2C_TypeDef *I2Cx, uint32_t PeripheralMode)
+{
+ MODIFY_REG(I2Cx->CR1, I2C_CR1_SMBHEN | I2C_CR1_SMBDEN, PeripheralMode);
+}
+
+/**
+ * @brief Get peripheral mode.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 SMBHEN LL_I2C_GetMode\n
+ * CR1 SMBDEN LL_I2C_GetMode
+ * @param I2Cx I2C Instance.
+ * @retval Returned value can be one of the following values:
+ * @arg @ref LL_I2C_MODE_I2C
+ * @arg @ref LL_I2C_MODE_SMBUS_HOST
+ * @arg @ref LL_I2C_MODE_SMBUS_DEVICE
+ * @arg @ref LL_I2C_MODE_SMBUS_DEVICE_ARP
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetMode(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR1, I2C_CR1_SMBHEN | I2C_CR1_SMBDEN));
+}
+
+/**
+ * @brief Enable SMBus alert (Host or Device mode)
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note SMBus Device mode:
+ * - SMBus Alert pin is drived low and
+ * Alert Response Address Header acknowledge is enabled.
+ * SMBus Host mode:
+ * - SMBus Alert pin management is supported.
+ * @rmtoll CR1 ALERTEN LL_I2C_EnableSMBusAlert
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableSMBusAlert(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_ALERTEN);
+}
+
+/**
+ * @brief Disable SMBus alert (Host or Device mode)
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note SMBus Device mode:
+ * - SMBus Alert pin is not drived (can be used as a standard GPIO) and
+ * Alert Response Address Header acknowledge is disabled.
+ * SMBus Host mode:
+ * - SMBus Alert pin management is not supported.
+ * @rmtoll CR1 ALERTEN LL_I2C_DisableSMBusAlert
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableSMBusAlert(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_ALERTEN);
+}
+
+/**
+ * @brief Check if SMBus alert (Host or Device mode) is enabled or disabled.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 ALERTEN LL_I2C_IsEnabledSMBusAlert
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledSMBusAlert(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_ALERTEN) == (I2C_CR1_ALERTEN));
+}
+
+/**
+ * @brief Enable SMBus Packet Error Calculation (PEC).
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 PECEN LL_I2C_EnableSMBusPEC
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableSMBusPEC(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_PECEN);
+}
+
+/**
+ * @brief Disable SMBus Packet Error Calculation (PEC).
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 PECEN LL_I2C_DisableSMBusPEC
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableSMBusPEC(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_PECEN);
+}
+
+/**
+ * @brief Check if SMBus Packet Error Calculation (PEC) is enabled or disabled.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 PECEN LL_I2C_IsEnabledSMBusPEC
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledSMBusPEC(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_PECEN) == (I2C_CR1_PECEN));
+}
+
+/**
+ * @brief Configure the SMBus Clock Timeout.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note This configuration can only be programmed when associated Timeout is disabled (TimeoutA and/orTimeoutB).
+ * @rmtoll TIMEOUTR TIMEOUTA LL_I2C_ConfigSMBusTimeout\n
+ * TIMEOUTR TIDLE LL_I2C_ConfigSMBusTimeout\n
+ * TIMEOUTR TIMEOUTB LL_I2C_ConfigSMBusTimeout
+ * @param I2Cx I2C Instance.
+ * @param TimeoutA This parameter must be a value between Min_Data=0 and Max_Data=0xFFF.
+ * @param TimeoutAMode This parameter can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SCL_LOW
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SDA_SCL_HIGH
+ * @param TimeoutB
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ConfigSMBusTimeout(I2C_TypeDef *I2Cx, uint32_t TimeoutA, uint32_t TimeoutAMode,
+ uint32_t TimeoutB)
+{
+ MODIFY_REG(I2Cx->TIMEOUTR, I2C_TIMEOUTR_TIMEOUTA | I2C_TIMEOUTR_TIDLE | I2C_TIMEOUTR_TIMEOUTB,
+ TimeoutA | TimeoutAMode | (TimeoutB << I2C_POSITION_TIMEOUTR_TIMEOUTB));
+}
+
+/**
+ * @brief Configure the SMBus Clock TimeoutA (SCL low timeout or SCL and SDA high timeout depends on TimeoutA mode).
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note These bits can only be programmed when TimeoutA is disabled.
+ * @rmtoll TIMEOUTR TIMEOUTA LL_I2C_SetSMBusTimeoutA
+ * @param I2Cx I2C Instance.
+ * @param TimeoutA This parameter must be a value between Min_Data=0 and Max_Data=0xFFF.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetSMBusTimeoutA(I2C_TypeDef *I2Cx, uint32_t TimeoutA)
+{
+ WRITE_REG(I2Cx->TIMEOUTR, TimeoutA);
+}
+
+/**
+ * @brief Get the SMBus Clock TimeoutA setting.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIMEOUTA LL_I2C_GetSMBusTimeoutA
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0 and Max_Data=0xFFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetSMBusTimeoutA(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMEOUTR, I2C_TIMEOUTR_TIMEOUTA));
+}
+
+/**
+ * @brief Set the SMBus Clock TimeoutA mode.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note This bit can only be programmed when TimeoutA is disabled.
+ * @rmtoll TIMEOUTR TIDLE LL_I2C_SetSMBusTimeoutAMode
+ * @param I2Cx I2C Instance.
+ * @param TimeoutAMode This parameter can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SCL_LOW
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SDA_SCL_HIGH
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetSMBusTimeoutAMode(I2C_TypeDef *I2Cx, uint32_t TimeoutAMode)
+{
+ WRITE_REG(I2Cx->TIMEOUTR, TimeoutAMode);
+}
+
+/**
+ * @brief Get the SMBus Clock TimeoutA mode.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIDLE LL_I2C_GetSMBusTimeoutAMode
+ * @param I2Cx I2C Instance.
+ * @retval Returned value can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SCL_LOW
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SDA_SCL_HIGH
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetSMBusTimeoutAMode(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMEOUTR, I2C_TIMEOUTR_TIDLE));
+}
+
+/**
+ * @brief Configure the SMBus Extended Cumulative Clock TimeoutB (Master or Slave mode).
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note These bits can only be programmed when TimeoutB is disabled.
+ * @rmtoll TIMEOUTR TIMEOUTB LL_I2C_SetSMBusTimeoutB
+ * @param I2Cx I2C Instance.
+ * @param TimeoutB This parameter must be a value between Min_Data=0 and Max_Data=0xFFF.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetSMBusTimeoutB(I2C_TypeDef *I2Cx, uint32_t TimeoutB)
+{
+ WRITE_REG(I2Cx->TIMEOUTR, TimeoutB << I2C_POSITION_TIMEOUTR_TIMEOUTB);
+}
+
+/**
+ * @brief Get the SMBus Extented Cumulative Clock TimeoutB setting.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIMEOUTB LL_I2C_GetSMBusTimeoutB
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0 and Max_Data=0xFFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetSMBusTimeoutB(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMEOUTR, I2C_TIMEOUTR_TIMEOUTB) >> I2C_POSITION_TIMEOUTR_TIMEOUTB);
+}
+
+/**
+ * @brief Enable the SMBus Clock Timeout.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIMOUTEN LL_I2C_EnableSMBusTimeout\n
+ * TIMEOUTR TEXTEN LL_I2C_EnableSMBusTimeout
+ * @param I2Cx I2C Instance.
+ * @param ClockTimeout This parameter can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTB
+ * @arg @ref LL_I2C_SMBUS_ALL_TIMEOUT
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableSMBusTimeout(I2C_TypeDef *I2Cx, uint32_t ClockTimeout)
+{
+ SET_BIT(I2Cx->TIMEOUTR, ClockTimeout);
+}
+
+/**
+ * @brief Disable the SMBus Clock Timeout.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIMOUTEN LL_I2C_DisableSMBusTimeout\n
+ * TIMEOUTR TEXTEN LL_I2C_DisableSMBusTimeout
+ * @param I2Cx I2C Instance.
+ * @param ClockTimeout This parameter can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTB
+ * @arg @ref LL_I2C_SMBUS_ALL_TIMEOUT
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableSMBusTimeout(I2C_TypeDef *I2Cx, uint32_t ClockTimeout)
+{
+ CLEAR_BIT(I2Cx->TIMEOUTR, ClockTimeout);
+}
+
+/**
+ * @brief Check if the SMBus Clock Timeout is enabled or disabled.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIMOUTEN LL_I2C_IsEnabledSMBusTimeout\n
+ * TIMEOUTR TEXTEN LL_I2C_IsEnabledSMBusTimeout
+ * @param I2Cx I2C Instance.
+ * @param ClockTimeout This parameter can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTB
+ * @arg @ref LL_I2C_SMBUS_ALL_TIMEOUT
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledSMBusTimeout(I2C_TypeDef *I2Cx, uint32_t ClockTimeout)
+{
+ return (READ_BIT(I2Cx->TIMEOUTR, (I2C_TIMEOUTR_TIMOUTEN | I2C_TIMEOUTR_TEXTEN)) == (ClockTimeout));
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EF_IT_Management IT_Management
+ * @{
+ */
+
+/**
+ * @brief Enable TXIS interrupt.
+ * @rmtoll CR1 TXIE LL_I2C_EnableIT_TX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_TX(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_TXIE);
+}
+
+/**
+ * @brief Disable TXIS interrupt.
+ * @rmtoll CR1 TXIE LL_I2C_DisableIT_TX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_TX(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_TXIE);
+}
+
+/**
+ * @brief Check if the TXIS Interrupt is enabled or disabled.
+ * @rmtoll CR1 TXIE LL_I2C_IsEnabledIT_TX
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_TX(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_TXIE) == (I2C_CR1_TXIE));
+}
+
+/**
+ * @brief Enable RXNE interrupt.
+ * @rmtoll CR1 RXIE LL_I2C_EnableIT_RX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_RX(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_RXIE);
+}
+
+/**
+ * @brief Disable RXNE interrupt.
+ * @rmtoll CR1 RXIE LL_I2C_DisableIT_RX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_RX(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_RXIE);
+}
+
+/**
+ * @brief Check if the RXNE Interrupt is enabled or disabled.
+ * @rmtoll CR1 RXIE LL_I2C_IsEnabledIT_RX
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_RX(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_RXIE) == (I2C_CR1_RXIE));
+}
+
+/**
+ * @brief Enable Address match interrupt (slave mode only).
+ * @rmtoll CR1 ADDRIE LL_I2C_EnableIT_ADDR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_ADDR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_ADDRIE);
+}
+
+/**
+ * @brief Disable Address match interrupt (slave mode only).
+ * @rmtoll CR1 ADDRIE LL_I2C_DisableIT_ADDR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_ADDR(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_ADDRIE);
+}
+
+/**
+ * @brief Check if Address match interrupt is enabled or disabled.
+ * @rmtoll CR1 ADDRIE LL_I2C_IsEnabledIT_ADDR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_ADDR(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_ADDRIE) == (I2C_CR1_ADDRIE));
+}
+
+/**
+ * @brief Enable Not acknowledge received interrupt.
+ * @rmtoll CR1 NACKIE LL_I2C_EnableIT_NACK
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_NACK(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_NACKIE);
+}
+
+/**
+ * @brief Disable Not acknowledge received interrupt.
+ * @rmtoll CR1 NACKIE LL_I2C_DisableIT_NACK
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_NACK(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_NACKIE);
+}
+
+/**
+ * @brief Check if Not acknowledge received interrupt is enabled or disabled.
+ * @rmtoll CR1 NACKIE LL_I2C_IsEnabledIT_NACK
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_NACK(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_NACKIE) == (I2C_CR1_NACKIE));
+}
+
+/**
+ * @brief Enable STOP detection interrupt.
+ * @rmtoll CR1 STOPIE LL_I2C_EnableIT_STOP
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_STOP(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_STOPIE);
+}
+
+/**
+ * @brief Disable STOP detection interrupt.
+ * @rmtoll CR1 STOPIE LL_I2C_DisableIT_STOP
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_STOP(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_STOPIE);
+}
+
+/**
+ * @brief Check if STOP detection interrupt is enabled or disabled.
+ * @rmtoll CR1 STOPIE LL_I2C_IsEnabledIT_STOP
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_STOP(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_STOPIE) == (I2C_CR1_STOPIE));
+}
+
+/**
+ * @brief Enable Transfer Complete interrupt.
+ * @note Any of these events will generate interrupt :
+ * Transfer Complete (TC)
+ * Transfer Complete Reload (TCR)
+ * @rmtoll CR1 TCIE LL_I2C_EnableIT_TC
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_TC(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_TCIE);
+}
+
+/**
+ * @brief Disable Transfer Complete interrupt.
+ * @note Any of these events will generate interrupt :
+ * Transfer Complete (TC)
+ * Transfer Complete Reload (TCR)
+ * @rmtoll CR1 TCIE LL_I2C_DisableIT_TC
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_TC(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_TCIE);
+}
+
+/**
+ * @brief Check if Transfer Complete interrupt is enabled or disabled.
+ * @rmtoll CR1 TCIE LL_I2C_IsEnabledIT_TC
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_TC(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_TCIE) == (I2C_CR1_TCIE));
+}
+
+/**
+ * @brief Enable Error interrupts.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note Any of these errors will generate interrupt :
+ * Arbitration Loss (ARLO)
+ * Bus Error detection (BERR)
+ * Overrun/Underrun (OVR)
+ * SMBus Timeout detection (TIMEOUT)
+ * SMBus PEC error detection (PECERR)
+ * SMBus Alert pin event detection (ALERT)
+ * @rmtoll CR1 ERRIE LL_I2C_EnableIT_ERR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_ERR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_ERRIE);
+}
+
+/**
+ * @brief Disable Error interrupts.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note Any of these errors will generate interrupt :
+ * Arbitration Loss (ARLO)
+ * Bus Error detection (BERR)
+ * Overrun/Underrun (OVR)
+ * SMBus Timeout detection (TIMEOUT)
+ * SMBus PEC error detection (PECERR)
+ * SMBus Alert pin event detection (ALERT)
+ * @rmtoll CR1 ERRIE LL_I2C_DisableIT_ERR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_ERR(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_ERRIE);
+}
+
+/**
+ * @brief Check if Error interrupts are enabled or disabled.
+ * @rmtoll CR1 ERRIE LL_I2C_IsEnabledIT_ERR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_ERR(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR1, I2C_CR1_ERRIE) == (I2C_CR1_ERRIE));
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EF_FLAG_management FLAG_management
+ * @{
+ */
+
+/**
+ * @brief Indicate the status of Transmit data register empty flag.
+ * @note RESET: When next data is written in Transmit data register.
+ * SET: When Transmit data register is empty.
+ * @rmtoll ISR TXE LL_I2C_IsActiveFlag_TXE
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_TXE(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_TXE) == (I2C_ISR_TXE));
+}
+
+/**
+ * @brief Indicate the status of Transmit interrupt flag.
+ * @note RESET: When next data is written in Transmit data register.
+ * SET: When Transmit data register is empty.
+ * @rmtoll ISR TXIS LL_I2C_IsActiveFlag_TXIS
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_TXIS(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_TXIS) == (I2C_ISR_TXIS));
+}
+
+/**
+ * @brief Indicate the status of Receive data register not empty flag.
+ * @note RESET: When Receive data register is read.
+ * SET: When the received data is copied in Receive data register.
+ * @rmtoll ISR RXNE LL_I2C_IsActiveFlag_RXNE
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_RXNE(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_RXNE) == (I2C_ISR_RXNE));
+}
+
+/**
+ * @brief Indicate the status of Address matched flag (slave mode).
+ * @note RESET: Clear default value.
+ * SET: When the received slave address matched with one of the enabled slave address.
+ * @rmtoll ISR ADDR LL_I2C_IsActiveFlag_ADDR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_ADDR(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_ADDR) == (I2C_ISR_ADDR));
+}
+
+/**
+ * @brief Indicate the status of Not Acknowledge received flag.
+ * @note RESET: Clear default value.
+ * SET: When a NACK is received after a byte transmission.
+ * @rmtoll ISR NACKF LL_I2C_IsActiveFlag_NACK
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_NACK(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_NACKF) == (I2C_ISR_NACKF));
+}
+
+/**
+ * @brief Indicate the status of Stop detection flag.
+ * @note RESET: Clear default value.
+ * SET: When a Stop condition is detected.
+ * @rmtoll ISR STOPF LL_I2C_IsActiveFlag_STOP
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_STOP(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_STOPF) == (I2C_ISR_STOPF));
+}
+
+/**
+ * @brief Indicate the status of Transfer complete flag (master mode).
+ * @note RESET: Clear default value.
+ * SET: When RELOAD=0, AUTOEND=0 and NBYTES date have been transferred.
+ * @rmtoll ISR TC LL_I2C_IsActiveFlag_TC
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_TC(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_TC) == (I2C_ISR_TC));
+}
+
+/**
+ * @brief Indicate the status of Transfer complete flag (master mode).
+ * @note RESET: Clear default value.
+ * SET: When RELOAD=1 and NBYTES date have been transferred.
+ * @rmtoll ISR TCR LL_I2C_IsActiveFlag_TCR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_TCR(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_TCR) == (I2C_ISR_TCR));
+}
+
+/**
+ * @brief Indicate the status of Bus error flag.
+ * @note RESET: Clear default value.
+ * SET: When a misplaced Start or Stop condition is detected.
+ * @rmtoll ISR BERR LL_I2C_IsActiveFlag_BERR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_BERR(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_BERR) == (I2C_ISR_BERR));
+}
+
+/**
+ * @brief Indicate the status of Arbitration lost flag.
+ * @note RESET: Clear default value.
+ * SET: When arbitration lost.
+ * @rmtoll ISR ARLO LL_I2C_IsActiveFlag_ARLO
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_ARLO(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_ARLO) == (I2C_ISR_ARLO));
+}
+
+/**
+ * @brief Indicate the status of Overrun/Underrun flag (slave mode).
+ * @note RESET: Clear default value.
+ * SET: When an overrun/underrun error occurs (Clock Stretching Disabled).
+ * @rmtoll ISR OVR LL_I2C_IsActiveFlag_OVR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_OVR(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_OVR) == (I2C_ISR_OVR));
+}
+
+/**
+ * @brief Indicate the status of SMBus PEC error flag in reception.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note RESET: Clear default value.
+ * SET: When the received PEC does not match with the PEC register content.
+ * @rmtoll ISR PECERR LL_I2C_IsActiveSMBusFlag_PECERR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveSMBusFlag_PECERR(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_PECERR) == (I2C_ISR_PECERR));
+}
+
+/**
+ * @brief Indicate the status of SMBus Timeout detection flag.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note RESET: Clear default value.
+ * SET: When a timeout or extended clock timeout occurs.
+ * @rmtoll ISR TIMEOUT LL_I2C_IsActiveSMBusFlag_TIMEOUT
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveSMBusFlag_TIMEOUT(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_TIMEOUT) == (I2C_ISR_TIMEOUT));
+}
+
+/**
+ * @brief Indicate the status of SMBus alert flag.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note RESET: Clear default value.
+ * SET: When SMBus host configuration, SMBus alert enabled and
+ * a falling edge event occurs on SMBA pin.
+ * @rmtoll ISR ALERT LL_I2C_IsActiveSMBusFlag_ALERT
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveSMBusFlag_ALERT(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_ALERT) == (I2C_ISR_ALERT));
+}
+
+/**
+ * @brief Indicate the status of Bus Busy flag.
+ * @note RESET: Clear default value.
+ * SET: When a Start condition is detected.
+ * @rmtoll ISR BUSY LL_I2C_IsActiveFlag_BUSY
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_BUSY(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->ISR, I2C_ISR_BUSY) == (I2C_ISR_BUSY));
+}
+
+/**
+ * @brief Clear Address Matched flag.
+ * @rmtoll ICR ADDRCF LL_I2C_ClearFlag_ADDR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_ADDR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_ADDRCF);
+}
+
+/**
+ * @brief Clear Not Acknowledge flag.
+ * @rmtoll ICR NACKCF LL_I2C_ClearFlag_NACK
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_NACK(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_NACKCF);
+}
+
+/**
+ * @brief Clear Stop detection flag.
+ * @rmtoll ICR STOPCF LL_I2C_ClearFlag_STOP
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_STOP(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_STOPCF);
+}
+
+/**
+ * @brief Clear Transmit data register empty flag (TXE).
+ * @note This bit can be clear by software in order to flush the transmit data register (TXDR).
+ * @rmtoll ISR TXE LL_I2C_ClearFlag_TXE
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_TXE(I2C_TypeDef *I2Cx)
+{
+ WRITE_REG(I2Cx->ISR, I2C_ISR_TXE);
+}
+
+/**
+ * @brief Clear Bus error flag.
+ * @rmtoll ICR BERRCF LL_I2C_ClearFlag_BERR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_BERR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_BERRCF);
+}
+
+/**
+ * @brief Clear Arbitration lost flag.
+ * @rmtoll ICR ARLOCF LL_I2C_ClearFlag_ARLO
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_ARLO(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_ARLOCF);
+}
+
+/**
+ * @brief Clear Overrun/Underrun flag.
+ * @rmtoll ICR OVRCF LL_I2C_ClearFlag_OVR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_OVR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_OVRCF);
+}
+
+/**
+ * @brief Clear SMBus PEC error flag.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll ICR PECCF LL_I2C_ClearSMBusFlag_PECERR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearSMBusFlag_PECERR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_PECCF);
+}
+
+/**
+ * @brief Clear SMBus Timeout detection flag.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll ICR TIMOUTCF LL_I2C_ClearSMBusFlag_TIMEOUT
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearSMBusFlag_TIMEOUT(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_TIMOUTCF);
+}
+
+/**
+ * @brief Clear SMBus Alert flag.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll ICR ALERTCF LL_I2C_ClearSMBusFlag_ALERT
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearSMBusFlag_ALERT(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_ALERTCF);
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EF_Data_Management Data_Management
+ * @{
+ */
+
+/**
+ * @brief Enable automatic STOP condition generation (master mode).
+ * @note Automatic end mode : a STOP condition is automatically sent when NBYTES data are transferred.
+ * This bit has no effect in slave mode or when RELOAD bit is set.
+ * @rmtoll CR2 AUTOEND LL_I2C_EnableAutoEndMode
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableAutoEndMode(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_AUTOEND);
+}
+
+/**
+ * @brief Disable automatic STOP condition generation (master mode).
+ * @note Software end mode : TC flag is set when NBYTES data are transferre, stretching SCL low.
+ * @rmtoll CR2 AUTOEND LL_I2C_DisableAutoEndMode
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableAutoEndMode(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR2, I2C_CR2_AUTOEND);
+}
+
+/**
+ * @brief Check if automatic STOP condition is enabled or disabled.
+ * @rmtoll CR2 AUTOEND LL_I2C_IsEnabledAutoEndMode
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledAutoEndMode(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR2, I2C_CR2_AUTOEND) == (I2C_CR2_AUTOEND));
+}
+
+/**
+ * @brief Enable reload mode (master mode).
+ * @note The transfer is not completed after the NBYTES data transfer, NBYTES will be reloaded when TCR flag is set.
+ * @rmtoll CR2 RELOAD LL_I2C_EnableReloadMode
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableReloadMode(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_RELOAD);
+}
+
+/**
+ * @brief Disable reload mode (master mode).
+ * @note The transfer is completed after the NBYTES data transfer(STOP or RESTART will follow).
+ * @rmtoll CR2 RELOAD LL_I2C_DisableReloadMode
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableReloadMode(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR2, I2C_CR2_RELOAD);
+}
+
+/**
+ * @brief Check if reload mode is enabled or disabled.
+ * @rmtoll CR2 RELOAD LL_I2C_IsEnabledReloadMode
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledReloadMode(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR2, I2C_CR2_RELOAD) == (I2C_CR2_RELOAD));
+}
+
+/**
+ * @brief Configure the number of bytes for transfer.
+ * @note Changing these bits when START bit is set is not allowed.
+ * @rmtoll CR2 NBYTES LL_I2C_SetTransferSize
+ * @param I2Cx I2C Instance.
+ * @param TransferSize This parameter must be a value between Min_Data=0x00 and Max_Data=0xFF.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetTransferSize(I2C_TypeDef *I2Cx, uint32_t TransferSize)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_NBYTES, TransferSize << I2C_POSITION_CR2_NBYTES);
+}
+
+/**
+ * @brief Get the number of bytes configured for transfer.
+ * @rmtoll CR2 NBYTES LL_I2C_GetTransferSize
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0xFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetTransferSize(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR2, I2C_CR2_NBYTES) >> I2C_POSITION_CR2_NBYTES);
+}
+
+/**
+ * @brief Prepare the generation of a ACKnowledge or Non ACKnowledge condition after the address receive match code or next received byte.
+ * @note Usage in Slave mode only.
+ * @rmtoll CR2 NACK LL_I2C_AcknowledgeNextData
+ * @param I2Cx I2C Instance.
+ * @param TypeAcknowledge This parameter can be one of the following values:
+ * @arg @ref LL_I2C_ACK
+ * @arg @ref LL_I2C_NACK
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_AcknowledgeNextData(I2C_TypeDef *I2Cx, uint32_t TypeAcknowledge)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_NACK, TypeAcknowledge);
+}
+
+/**
+ * @brief Generate a START or RESTART condition
+ * @note The START bit can be set even if bus is BUSY or I2C is in slave mode.
+ * This action has no effect when RELOAD is set.
+ * @rmtoll CR2 START LL_I2C_GenerateStartCondition
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_GenerateStartCondition(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_START);
+}
+
+/**
+ * @brief Generate a STOP condition after the current byte transfer (master mode).
+ * @rmtoll CR2 STOP LL_I2C_GenerateStopCondition
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_GenerateStopCondition(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_STOP);
+}
+
+/**
+ * @brief Enable automatic RESTART Read request condition for 10bit address header (master mode).
+ * @note The master sends the complete 10bit slave address read sequence :
+ * Start + 2 bytes 10bit address in Write direction + Restart + first 7 bits of 10bit address in Read direction.
+ * @rmtoll CR2 HEAD10R LL_I2C_EnableAuto10BitRead
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableAuto10BitRead(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR2, I2C_CR2_HEAD10R);
+}
+
+/**
+ * @brief Disable automatic RESTART Read request condition for 10bit address header (master mode).
+ * @note The master only sends the first 7 bits of 10bit address in Read direction.
+ * @rmtoll CR2 HEAD10R LL_I2C_DisableAuto10BitRead
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableAuto10BitRead(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_HEAD10R);
+}
+
+/**
+ * @brief Check if automatic RESTART Read request condition for 10bit address header is enabled or disabled.
+ * @rmtoll CR2 HEAD10R LL_I2C_IsEnabledAuto10BitRead
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledAuto10BitRead(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR2, I2C_CR2_HEAD10R) != (I2C_CR2_HEAD10R));
+}
+
+/**
+ * @brief Configure the transfer direction (master mode).
+ * @note Changing these bits when START bit is set is not allowed.
+ * @rmtoll CR2 RD_WRN LL_I2C_SetTransferRequest
+ * @param I2Cx I2C Instance.
+ * @param TransferRequest This parameter can be one of the following values:
+ * @arg @ref LL_I2C_REQUEST_WRITE
+ * @arg @ref LL_I2C_REQUEST_READ
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetTransferRequest(I2C_TypeDef *I2Cx, uint32_t TransferRequest)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_RD_WRN, TransferRequest);
+}
+
+/**
+ * @brief Get the transfer direction requested (master mode).
+ * @rmtoll CR2 RD_WRN LL_I2C_GetTransferRequest
+ * @param I2Cx I2C Instance.
+ * @retval Returned value can be one of the following values:
+ * @arg @ref LL_I2C_REQUEST_WRITE
+ * @arg @ref LL_I2C_REQUEST_READ
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetTransferRequest(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR2, I2C_CR2_RD_WRN));
+}
+
+/**
+ * @brief Configure the slave address for transfer (master mode).
+ * @note Changing these bits when START bit is set is not allowed.
+ * @rmtoll CR2 SADD LL_I2C_SetSlaveAddr
+ * @param I2Cx I2C Instance.
+ * @param SlaveAddr This parameter must be a value between Min_Data=0x00 and Max_Data=0x3F.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetSlaveAddr(I2C_TypeDef *I2Cx, uint32_t SlaveAddr)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_SADD, SlaveAddr);
+}
+
+/**
+ * @brief Get the slave address programmed for transfer.
+ * @rmtoll CR2 SADD LL_I2C_GetSlaveAddr
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0x3F
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetSlaveAddr(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR2, I2C_CR2_SADD));
+}
+
+/**
+ * @brief Handles I2Cx communication when starting transfer or during transfer (TC or TCR flag are set).
+ * @rmtoll CR2 SADD LL_I2C_HandleTransfer\n
+ * CR2 ADD10 LL_I2C_HandleTransfer\n
+ * CR2 RD_WRN LL_I2C_HandleTransfer\n
+ * CR2 START LL_I2C_HandleTransfer\n
+ * CR2 STOP LL_I2C_HandleTransfer\n
+ * CR2 RELOAD LL_I2C_HandleTransfer\n
+ * CR2 NBYTES LL_I2C_HandleTransfer\n
+ * CR2 AUTOEND LL_I2C_HandleTransfer\n
+ * CR2 HEAD10R LL_I2C_HandleTransfer
+ * @param I2Cx I2C Instance.
+ * @param SlaveAddr Specifies the slave address to be programmed.
+ * @param SlaveAddrSize This parameter can be one of the following values:
+ * @arg @ref LL_I2C_ADDRSLAVE_7BIT
+ * @arg @ref LL_I2C_ADDRSLAVE_10BIT
+ * @param TransferSize Specifies the number of bytes to be programmed.
+ * This parameter must be a value between Min_Data=0 and Max_Data=255.
+ * @param EndMode This parameter can be one of the following values:
+ * @arg @ref LL_I2C_MODE_RELOAD
+ * @arg @ref LL_I2C_MODE_AUTOEND
+ * @arg @ref LL_I2C_MODE_SOFTEND
+ * @arg @ref LL_I2C_MODE_SMBUS_RELOAD
+ * @arg @ref LL_I2C_MODE_SMBUS_AUTOEND_NO_PEC
+ * @arg @ref LL_I2C_MODE_SMBUS_SOFTEND_NO_PEC
+ * @arg @ref LL_I2C_MODE_SMBUS_AUTOEND_WITH_PEC
+ * @arg @ref LL_I2C_MODE_SMBUS_SOFTEND_WITH_PEC
+ * @param Request This parameter can be one of the following values:
+ * @arg @ref LL_I2C_GENERATE_NOSTARTSTOP
+ * @arg @ref LL_I2C_GENERATE_STOP
+ * @arg @ref LL_I2C_GENERATE_START_READ
+ * @arg @ref LL_I2C_GENERATE_START_WRITE
+ * @arg @ref LL_I2C_GENERATE_RESTART_7BIT_READ
+ * @arg @ref LL_I2C_GENERATE_RESTART_7BIT_WRITE
+ * @arg @ref LL_I2C_GENERATE_RESTART_10BIT_READ
+ * @arg @ref LL_I2C_GENERATE_RESTART_10BIT_WRITE
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_HandleTransfer(I2C_TypeDef *I2Cx, uint32_t SlaveAddr, uint32_t SlaveAddrSize,
+ uint32_t TransferSize, uint32_t EndMode, uint32_t Request)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_SADD | I2C_CR2_ADD10 | I2C_CR2_RD_WRN | I2C_CR2_START | I2C_CR2_STOP | I2C_CR2_RELOAD |
+ I2C_CR2_NBYTES | I2C_CR2_AUTOEND | I2C_CR2_HEAD10R,
+ SlaveAddr | SlaveAddrSize | TransferSize << I2C_POSITION_CR2_NBYTES | EndMode | Request);
+}
+
+/**
+ * @brief Indicate the value of transfer direction (slave mode).
+ * @note RESET: Write transfer, Slave enters in receiver mode.
+ * SET: Read transfer, Slave enters in transmitter mode.
+ * @rmtoll ISR DIR LL_I2C_GetTransferDirection
+ * @param I2Cx I2C Instance.
+ * @retval Returned value can be one of the following values:
+ * @arg @ref LL_I2C_DIRECTION_WRITE
+ * @arg @ref LL_I2C_DIRECTION_READ
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetTransferDirection(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->ISR, I2C_ISR_DIR));
+}
+
+/**
+ * @brief Return the slave matched address.
+ * @rmtoll ISR ADDCODE LL_I2C_GetAddressMatchCode
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x00 and Max_Data=0x3F
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetAddressMatchCode(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->ISR, I2C_ISR_ADDCODE) >> I2C_POSITION_ISR_ADDCODE << 1);
+}
+
+/**
+ * @brief Enable internal comparison of the SMBus Packet Error byte (transmission or reception mode).
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note This feature is cleared by hardware when the PEC byte is transferred, or when a STOP condition or an Address Matched is received.
+ * This bit has no effect when RELOAD bit is set.
+ * This bit has no effect in device mode when SBC bit is not set.
+ * @rmtoll CR2 PECBYTE LL_I2C_EnableSMBusPECCompare
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableSMBusPECCompare(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_PECBYTE);
+}
+
+/**
+ * @brief Check if the SMBus Packet Error byte internal comparison is requested or not.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR2 PECBYTE LL_I2C_IsEnabledSMBusPECCompare
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledSMBusPECCompare(I2C_TypeDef *I2Cx)
+{
+ return (READ_BIT(I2Cx->CR2, I2C_CR2_PECBYTE) == (I2C_CR2_PECBYTE));
+}
+
+/**
+ * @brief Get the SMBus Packet Error byte calculated.
+ * @note Macro @ref IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll PECR PEC LL_I2C_GetSMBusPEC
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x00 and Max_Data=0xFF
+*/
+__STATIC_INLINE uint32_t LL_I2C_GetSMBusPEC(I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->PECR, I2C_PECR_PEC));
+}
+
+/**
+ * @brief Read Receive Data register.
+ * @rmtoll RXDR RXDATA LL_I2C_ReceiveData8
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x00 and Max_Data=0xFF
+ */
+__STATIC_INLINE uint8_t LL_I2C_ReceiveData8(I2C_TypeDef *I2Cx)
+{
+ return (uint8_t)(READ_BIT(I2Cx->RXDR, I2C_RXDR_RXDATA));
+}
+
+/**
+ * @brief Write in Transmit Data Register .
+ * @rmtoll TXDR TXDATA LL_I2C_TransmitData8
+ * @param I2Cx I2C Instance.
+ * @param Data Value between Min_Data=0x00 and Max_Data=0xFF
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_TransmitData8(I2C_TypeDef *I2Cx, uint8_t Data)
+{
+ WRITE_REG(I2Cx->TXDR, Data);
+}
+
+/**
+ * @}
+ */
+
+#if defined(USE_FULL_LL_DRIVER)
+/** @defgroup I2C_LL_EF_Init Initialization and de-initialization functions
+ * @{
+ */
+
+uint32_t LL_I2C_Init(I2C_TypeDef *I2Cx, LL_I2C_InitTypeDef *I2C_InitStruct);
+uint32_t LL_I2C_DeInit(I2C_TypeDef *I2Cx);
+void LL_I2C_StructInit(LL_I2C_InitTypeDef *I2C_InitStruct);
+
+
+/**
+ * @}
+ */
+#endif /* USE_FULL_LL_DRIVER */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* I2C1 || I2C2 */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F0xx_LL_I2C_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
