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/**
******************************************************************************
* @file stm32l0xx_ll_i2c.h
* @author MCD Application Team
* @brief Header file of I2C LL module.
******************************************************************************
* @attention
*
* Copyright (c) 2016 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 STM32L0xx_LL_I2C_H
#define STM32L0xx_LL_I2C_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (I2C1) || defined (I2C2) || defined (I2C3)
/** @defgroup I2C_LL I2C
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup I2C_LL_Private_Constants I2C Private Constants
* @{
*/
/**
* @}
*/
/* 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 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 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 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 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 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 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 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 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 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 0x00000000U
/*!< Don't Generate Stop and Start condition. */
#define LL_I2C_GENERATE_STOP (uint32_t)(0x80000000U | I2C_CR2_STOP)
/*!< Generate Stop condition (Size should be set to 0). */
#define LL_I2C_GENERATE_START_READ (uint32_t)(0x80000000U | I2C_CR2_START | I2C_CR2_RD_WRN)
/*!< Generate Start for read request. */
#define LL_I2C_GENERATE_START_WRITE (uint32_t)(0x80000000U | I2C_CR2_START)
/*!< Generate Start for write request. */
#define LL_I2C_GENERATE_RESTART_7BIT_READ (uint32_t)(0x80000000U | I2C_CR2_START | I2C_CR2_RD_WRN)
/*!< Generate Restart for read request, slave 7Bit address. */
#define LL_I2C_GENERATE_RESTART_7BIT_WRITE (uint32_t)(0x80000000U | I2C_CR2_START)
/*!< Generate Restart for write request, slave 7Bit address. */
#define LL_I2C_GENERATE_RESTART_10BIT_READ (uint32_t)(0x80000000U | 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 (uint32_t)(0x80000000U | I2C_CR2_START)
/*!< Generate Restart for write request, slave 10Bit address.*/
/**
* @}
*/
/** @defgroup I2C_LL_EC_DIRECTION Read Write Direction
* @{
*/
#define LL_I2C_DIRECTION_WRITE 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 0x00000000U /*!< Get address of data register used for
transmission */
#define LL_I2C_DMA_REG_DATA_RECEIVE 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 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 __SETUP_TIME__ This parameter must be a value between Min_Data=0 and Max_Data=0xF.
(tscldel = (SCLDEL+1)xtpresc)
* @param __HOLD_TIME__ This parameter must be a value between Min_Data=0 and Max_Data=0xF.
(tsdadel = SDADELxtpresc)
* @param __SCLH_PERIOD__ This parameter must be a value between Min_Data=0 and Max_Data=0xFF.
(tsclh = (SCLH+1)xtpresc)
* @param __SCLL_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__, __SETUP_TIME__, __HOLD_TIME__, __SCLH_PERIOD__, __SCLL_PERIOD__) \
((((uint32_t)(__PRESCALER__) << I2C_TIMINGR_PRESC_Pos) & I2C_TIMINGR_PRESC) | \
(((uint32_t)(__SETUP_TIME__) << I2C_TIMINGR_SCLDEL_Pos) & I2C_TIMINGR_SCLDEL) | \
(((uint32_t)(__HOLD_TIME__) << I2C_TIMINGR_SDADEL_Pos) & I2C_TIMINGR_SDADEL) | \
(((uint32_t)(__SCLH_PERIOD__) << I2C_TIMINGR_SCLH_Pos) & I2C_TIMINGR_SCLH) | \
(((uint32_t)(__SCLL_PERIOD__) << I2C_TIMINGR_SCLL_Pos) & 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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_PE) == (I2C_CR1_PE)) ? 1UL : 0UL);
}
/**
* @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_CR1_DNF_Pos));
}
/**
* @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_CR1_DNF_Pos);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return (uint32_t)(READ_BIT(I2Cx->CR1, I2C_CR1_DNF) >> I2C_CR1_DNF_Pos);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_ANFOFF) != (I2C_CR1_ANFOFF)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_TXDMAEN) == (I2C_CR1_TXDMAEN)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_RXDMAEN) == (I2C_CR1_RXDMAEN)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx, uint32_t Direction)
{
uint32_t data_reg_addr;
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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_NOSTRETCH) != (I2C_CR1_NOSTRETCH)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_SBC) == (I2C_CR1_SBC)) ? 1UL : 0UL);
}
/**
* @brief Enable Wakeup from STOP.
* @note The macro 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 The macro 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 The macro 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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_WUPEN) == (I2C_CR1_WUPEN)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_GCEN) == (I2C_CR1_GCEN)) ? 1UL : 0UL);
}
/**
* @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(const 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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->OAR1, I2C_OAR1_OA1EN) == (I2C_OAR1_OA1EN)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->OAR2, I2C_OAR2_OA2EN) == (I2C_OAR2_OA2EN)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_PRESC) >> I2C_TIMINGR_PRESC_Pos);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SCLL) >> I2C_TIMINGR_SCLL_Pos);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SCLH) >> I2C_TIMINGR_SCLH_Pos);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SDADEL) >> I2C_TIMINGR_SDADEL_Pos);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SCLDEL) >> I2C_TIMINGR_SCLDEL_Pos);
}
/**
* @brief Configure peripheral mode.
* @note The macro IS_SMBUS_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 The macro IS_SMBUS_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(const 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 The macro IS_SMBUS_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 The macro IS_SMBUS_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 The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_ALERTEN) == (I2C_CR1_ALERTEN)) ? 1UL : 0UL);
}
/**
* @brief Enable SMBus Packet Error Calculation (PEC).
* @note The macro IS_SMBUS_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 The macro IS_SMBUS_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 The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_PECEN) == (I2C_CR1_PECEN)) ? 1UL : 0UL);
}
/**
* @brief Configure the SMBus Clock Timeout.
* @note The macro IS_SMBUS_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_TIMEOUTR_TIMEOUTB_Pos));
}
/**
* @brief Configure the SMBus Clock TimeoutA (SCL low timeout or SCL and SDA high timeout depends on TimeoutA mode).
* @note The macro IS_SMBUS_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 The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx)
{
return (uint32_t)(READ_BIT(I2Cx->TIMEOUTR, I2C_TIMEOUTR_TIMEOUTA));
}
/**
* @brief Set the SMBus Clock TimeoutA mode.
* @note The macro IS_SMBUS_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 The macro IS_SMBUS_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(const 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 The macro IS_SMBUS_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_TIMEOUTR_TIMEOUTB_Pos);
}
/**
* @brief Get the SMBus Extended Cumulative Clock TimeoutB setting.
* @note The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx)
{
return (uint32_t)(READ_BIT(I2Cx->TIMEOUTR, I2C_TIMEOUTR_TIMEOUTB) >> I2C_TIMEOUTR_TIMEOUTB_Pos);
}
/**
* @brief Enable the SMBus Clock Timeout.
* @note The macro IS_SMBUS_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 The macro IS_SMBUS_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 The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx, uint32_t ClockTimeout)
{
return ((READ_BIT(I2Cx->TIMEOUTR, (I2C_TIMEOUTR_TIMOUTEN | I2C_TIMEOUTR_TEXTEN)) == \
(ClockTimeout)) ? 1UL : 0UL);
}
/**
* @}
*/
/** @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_TXIE) == (I2C_CR1_TXIE)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_RXIE) == (I2C_CR1_RXIE)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_ADDRIE) == (I2C_CR1_ADDRIE)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_NACKIE) == (I2C_CR1_NACKIE)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_STOPIE) == (I2C_CR1_STOPIE)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_TCIE) == (I2C_CR1_TCIE)) ? 1UL : 0UL);
}
/**
* @brief Enable Error interrupts.
* @note The macro IS_SMBUS_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 The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR1, I2C_CR1_ERRIE) == (I2C_CR1_ERRIE)) ? 1UL : 0UL);
}
/**
* @}
*/
/** @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_TXE) == (I2C_ISR_TXE)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_TXIS) == (I2C_ISR_TXIS)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_RXNE) == (I2C_ISR_RXNE)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_ADDR) == (I2C_ISR_ADDR)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_NACKF) == (I2C_ISR_NACKF)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_STOPF) == (I2C_ISR_STOPF)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_TC) == (I2C_ISR_TC)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_TCR) == (I2C_ISR_TCR)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_BERR) == (I2C_ISR_BERR)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_ARLO) == (I2C_ISR_ARLO)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_OVR) == (I2C_ISR_OVR)) ? 1UL : 0UL);
}
/**
* @brief Indicate the status of SMBus PEC error flag in reception.
* @note The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_PECERR) == (I2C_ISR_PECERR)) ? 1UL : 0UL);
}
/**
* @brief Indicate the status of SMBus Timeout detection flag.
* @note The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_TIMEOUT) == (I2C_ISR_TIMEOUT)) ? 1UL : 0UL);
}
/**
* @brief Indicate the status of SMBus alert flag.
* @note The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_ALERT) == (I2C_ISR_ALERT)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->ISR, I2C_ISR_BUSY) == (I2C_ISR_BUSY)) ? 1UL : 0UL);
}
/**
* @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 The macro IS_SMBUS_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 The macro IS_SMBUS_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 The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR2, I2C_CR2_AUTOEND) == (I2C_CR2_AUTOEND)) ? 1UL : 0UL);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR2, I2C_CR2_RELOAD) == (I2C_CR2_RELOAD)) ? 1UL : 0UL);
}
/**
* @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_CR2_NBYTES_Pos);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return (uint32_t)(READ_BIT(I2Cx->CR2, I2C_CR2_NBYTES) >> I2C_CR2_NBYTES_Pos);
}
/**
* @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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR2, I2C_CR2_HEAD10R) != (I2C_CR2_HEAD10R)) ? 1UL : 0UL);
}
/**
* @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(const 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(const 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)
{
/* Declaration of tmp to prevent undefined behavior of volatile usage */
uint32_t tmp = ((uint32_t)(((uint32_t)SlaveAddr & I2C_CR2_SADD) | \
((uint32_t)SlaveAddrSize & I2C_CR2_ADD10) | \
(((uint32_t)TransferSize << I2C_CR2_NBYTES_Pos) & I2C_CR2_NBYTES) | \
(uint32_t)EndMode | (uint32_t)Request) & (~0x80000000U));
/* update CR2 register */
MODIFY_REG(I2Cx->CR2, I2C_CR2_SADD | I2C_CR2_ADD10 |
(I2C_CR2_RD_WRN & (uint32_t)(Request >> (31U - I2C_CR2_RD_WRN_Pos))) |
I2C_CR2_START | I2C_CR2_STOP | I2C_CR2_RELOAD |
I2C_CR2_NBYTES | I2C_CR2_AUTOEND | I2C_CR2_HEAD10R,
tmp);
}
/**
* @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(const 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(const I2C_TypeDef *I2Cx)
{
return (uint32_t)(READ_BIT(I2Cx->ISR, I2C_ISR_ADDCODE) >> I2C_ISR_ADDCODE_Pos << 1);
}
/**
* @brief Enable internal comparison of the SMBus Packet Error byte (transmission or reception mode).
* @note The macro IS_SMBUS_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 The macro IS_SMBUS_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(const I2C_TypeDef *I2Cx)
{
return ((READ_BIT(I2Cx->CR2, I2C_CR2_PECBYTE) == (I2C_CR2_PECBYTE)) ? 1UL : 0UL);
}
/**
* @brief Get the SMBus Packet Error byte calculated.
* @note The macro IS_SMBUS_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(const 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(const 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
* @{
*/
ErrorStatus LL_I2C_Init(I2C_TypeDef *I2Cx, const LL_I2C_InitTypeDef *I2C_InitStruct);
ErrorStatus LL_I2C_DeInit(const I2C_TypeDef *I2Cx);
void LL_I2C_StructInit(LL_I2C_InitTypeDef *I2C_InitStruct);
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/**
* @}
*/
/**
* @}
*/
#endif /* I2C1 || I2C2 || I2C3 */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* STM32L0xx_LL_I2C_H */