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Diff: TARGET_DISCO_F407VG/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_ll_i2c.h
- Revision:
- 161:aa5281ff4a02
- Child:
- 163:e59c8e839560
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_DISCO_F407VG/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_ll_i2c.h Fri Feb 16 16:16:41 2018 +0000 @@ -0,0 +1,1910 @@ +/** + ****************************************************************************** + * @file stm32f4xx_ll_i2c.h + * @author MCD Application Team + * @version V1.7.1 + * @date 14-April-2017 + * @brief Header file of I2C LL module. + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2017 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 __STM32F4xx_LL_I2C_H +#define __STM32F4xx_LL_I2C_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx.h" + +/** @addtogroup STM32F4xx_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 + * @{ + */ + +/* Defines used to perform compute and check in the macros */ +#define LL_I2C_MAX_SPEED_STANDARD 100000U +#define LL_I2C_MAX_SPEED_FAST 400000U +/** + * @} + */ + +/* 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 ClockSpeed; /*!< Specifies the clock frequency. + This parameter must be set to a value lower than 400kHz (in Hz) + + This feature can be modified afterwards using unitary function @ref LL_I2C_SetClockPeriod() + or @ref LL_I2C_SetDutyCycle() or @ref LL_I2C_SetClockSpeedMode() or @ref LL_I2C_ConfigSpeed(). */ + + uint32_t DutyCycle; /*!< Specifies the I2C fast mode duty cycle. + This parameter can be a value of @ref I2C_LL_EC_DUTYCYCLE + + This feature can be modified afterwards using unitary function @ref LL_I2C_SetDutyCycle(). */ + +#if defined(I2C_FLTR_ANOFF)&&defined(I2C_FLTR_DNF) + 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(). */ + +#endif + 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_GET_FLAG Get Flags Defines + * @brief Flags defines which can be used with LL_I2C_ReadReg function + * @{ + */ +#define LL_I2C_SR1_SB I2C_SR1_SB /*!< Start Bit (master mode) */ +#define LL_I2C_SR1_ADDR I2C_SR1_ADDR /*!< Address sent (master mode) or + Address matched flag (slave mode) */ +#define LL_I2C_SR1_BTF I2C_SR1_BTF /*!< Byte Transfer Finished flag */ +#define LL_I2C_SR1_ADD10 I2C_SR1_ADD10 /*!< 10-bit header sent (master mode) */ +#define LL_I2C_SR1_STOPF I2C_SR1_STOPF /*!< Stop detection flag (slave mode) */ +#define LL_I2C_SR1_RXNE I2C_SR1_RXNE /*!< Data register not empty (receivers) */ +#define LL_I2C_SR1_TXE I2C_SR1_TXE /*!< Data register empty (transmitters) */ +#define LL_I2C_SR1_BERR I2C_SR1_BERR /*!< Bus error */ +#define LL_I2C_SR1_ARLO I2C_SR1_ARLO /*!< Arbitration lost */ +#define LL_I2C_SR1_AF I2C_SR1_AF /*!< Acknowledge failure flag */ +#define LL_I2C_SR1_OVR I2C_SR1_OVR /*!< Overrun/Underrun */ +#define LL_I2C_SR1_PECERR I2C_ISR_PECERR /*!< PEC Error in reception (SMBus mode) */ +#define LL_I2C_SR1_TIMEOUT I2C_ISR_TIMEOUT /*!< Timeout detection flag (SMBus mode) */ +#define LL_I2C_SR1_SMALERT I2C_ISR_SMALERT /*!< SMBus alert (SMBus mode) */ +#define LL_I2C_SR2_MSL I2C_SR2_MSL /*!< Master/Slave flag */ +#define LL_I2C_SR2_BUSY I2C_SR2_BUSY /*!< Bus busy flag */ +#define LL_I2C_SR2_TRA I2C_SR2_TRA /*!< Transmitter/receiver direction */ +#define LL_I2C_SR2_GENCALL I2C_SR2_GENCALL /*!< General call address (Slave mode) */ +#define LL_I2C_SR2_SMBDEFAULT I2C_SR2_SMBDEFAULT /*!< SMBus Device default address (Slave mode) */ +#define LL_I2C_SR2_SMBHOST I2C_SR2_SMBHOST /*!< SMBus Host address (Slave mode) */ +#define LL_I2C_SR2_DUALF I2C_SR2_DUALF /*!< Dual flag (Slave mode) */ +/** + * @} + */ + +/** @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_CR2_ITEVTEN I2C_CR2_ITEVTEN /*!< Events interrupts enable */ +#define LL_I2C_CR2_ITBUFEN I2C_CR2_ITBUFEN /*!< Buffer interrupts enable */ +#define LL_I2C_CR2_ITERREN I2C_CR2_ITERREN /*!< Error interrupts enable */ +/** + * @} + */ + +#if defined(I2C_FLTR_ANOFF) +/** @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_FLTR_ANOFF /*!< Analog filter is disabled.*/ +/** + * @} + */ + +#endif +/** @defgroup I2C_LL_EC_OWNADDRESS1 Own Address 1 Length + * @{ + */ +#define LL_I2C_OWNADDRESS1_7BIT 0x00004000U /*!< Own address 1 is a 7-bit address. */ +#define LL_I2C_OWNADDRESS1_10BIT (uint32_t)(I2C_OAR1_ADDMODE | 0x00004000U) /*!< Own address 1 is a 10-bit address. */ +/** + * @} + */ + +/** @defgroup I2C_LL_EC_DUTYCYCLE Fast Mode Duty Cycle + * @{ + */ +#define LL_I2C_DUTYCYCLE_2 0x00000000U /*!< I2C fast mode Tlow/Thigh = 2 */ +#define LL_I2C_DUTYCYCLE_16_9 I2C_CCR_DUTY /*!< I2C fast mode Tlow/Thigh = 16/9 */ +/** + * @} + */ + +/** @defgroup I2C_LL_EC_CLOCK_SPEED_MODE Master Clock Speed Mode + * @{ + */ +#define LL_I2C_CLOCK_SPEED_STANDARD_MODE 0x00000000U /*!< Master clock speed range is standard mode */ +#define LL_I2C_CLOCK_SPEED_FAST_MODE I2C_CCR_FS /*!< Master clock speed range is fast mode */ +/** + * @} + */ + +/** @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 (uint32_t)(I2C_CR1_SMBUS | I2C_CR1_SMBTYPE | I2C_CR1_ENARP) /*!< SMBus Host address acknowledge */ +#define LL_I2C_MODE_SMBUS_DEVICE I2C_CR1_SMBUS /*!< SMBus Device default mode (Default address not acknowledge) */ +#define LL_I2C_MODE_SMBUS_DEVICE_ARP (uint32_t)(I2C_CR1_SMBUS | I2C_CR1_ENARP) /*!< SMBus Device Default address acknowledge */ +/** + * @} + */ + +/** @defgroup I2C_LL_EC_I2C_ACKNOWLEDGE Acknowledge Generation + * @{ + */ +#define LL_I2C_ACK I2C_CR1_ACK /*!< ACK is sent after current received byte. */ +#define LL_I2C_NACK 0x00000000U /*!< NACK is sent after current received byte.*/ +/** + * @} + */ + +/** @defgroup I2C_LL_EC_DIRECTION Read Write Direction + * @{ + */ +#define LL_I2C_DIRECTION_WRITE I2C_SR2_TRA /*!< Bus is in write transfer */ +#define LL_I2C_DIRECTION_READ 0x00000000U /*!< Bus is in read transfer */ +/** + * @} + */ + +/** + * @} + */ + +/* 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_Exported_Macros_Helper Exported_Macros_Helper + * @{ + */ + +/** + * @brief Convert Peripheral Clock Frequency in Mhz. + * @param __PCLK__ This parameter must be a value of peripheral clock (in Hz). + * @retval Value of peripheral clock (in Mhz) + */ +#define __LL_I2C_FREQ_HZ_TO_MHZ(__PCLK__) (uint32_t)((__PCLK__)/1000000U) + +/** + * @brief Convert Peripheral Clock Frequency in Hz. + * @param __PCLK__ This parameter must be a value of peripheral clock (in Mhz). + * @retval Value of peripheral clock (in Hz) + */ +#define __LL_I2C_FREQ_MHZ_TO_HZ(__PCLK__) (uint32_t)((__PCLK__)*1000000U) + +/** + * @brief Compute I2C Clock rising time. + * @param __FREQRANGE__ This parameter must be a value of peripheral clock (in Mhz). + * @param __SPEED__ This parameter must be a value lower than 400kHz (in Hz). + * @retval Value between Min_Data=0x02 and Max_Data=0x3F + */ +#define __LL_I2C_RISE_TIME(__FREQRANGE__, __SPEED__) (uint32_t)(((__SPEED__) <= LL_I2C_MAX_SPEED_STANDARD) ? ((__FREQRANGE__) + 1U) : ((((__FREQRANGE__) * 300U) / 1000U) + 1U)) + +/** + * @brief Compute Speed clock range to a Clock Control Register (I2C_CCR_CCR) value. + * @param __PCLK__ This parameter must be a value of peripheral clock (in Hz). + * @param __SPEED__ This parameter must be a value lower than 400kHz (in Hz). + * @param __DUTYCYCLE__ This parameter can be one of the following values: + * @arg @ref LL_I2C_DUTYCYCLE_2 + * @arg @ref LL_I2C_DUTYCYCLE_16_9 + * @retval Value between Min_Data=0x004 and Max_Data=0xFFF, except in FAST DUTY mode where Min_Data=0x001. + */ +#define __LL_I2C_SPEED_TO_CCR(__PCLK__, __SPEED__, __DUTYCYCLE__) (uint32_t)(((__SPEED__) <= LL_I2C_MAX_SPEED_STANDARD)? \ + (__LL_I2C_SPEED_STANDARD_TO_CCR((__PCLK__), (__SPEED__))) : \ + (__LL_I2C_SPEED_FAST_TO_CCR((__PCLK__), (__SPEED__), (__DUTYCYCLE__)))) + +/** + * @brief Compute Speed Standard clock range to a Clock Control Register (I2C_CCR_CCR) value. + * @param __PCLK__ This parameter must be a value of peripheral clock (in Hz). + * @param __SPEED__ This parameter must be a value lower than 100kHz (in Hz). + * @retval Value between Min_Data=0x004 and Max_Data=0xFFF. + */ +#define __LL_I2C_SPEED_STANDARD_TO_CCR(__PCLK__, __SPEED__) (uint32_t)(((((__PCLK__)/((__SPEED__) << 1U)) & I2C_CCR_CCR) < 4U)? 4U:((__PCLK__) / ((__SPEED__) << 1U))) + +/** + * @brief Compute Speed Fast clock range to a Clock Control Register (I2C_CCR_CCR) value. + * @param __PCLK__ This parameter must be a value of peripheral clock (in Hz). + * @param __SPEED__ This parameter must be a value between Min_Data=100Khz and Max_Data=400Khz (in Hz). + * @param __DUTYCYCLE__ This parameter can be one of the following values: + * @arg @ref LL_I2C_DUTYCYCLE_2 + * @arg @ref LL_I2C_DUTYCYCLE_16_9 + * @retval Value between Min_Data=0x001 and Max_Data=0xFFF + */ +#define __LL_I2C_SPEED_FAST_TO_CCR(__PCLK__, __SPEED__, __DUTYCYCLE__) (uint32_t)(((__DUTYCYCLE__) == LL_I2C_DUTYCYCLE_2)? \ + (((((__PCLK__) / ((__SPEED__) * 3U)) & I2C_CCR_CCR) == 0U)? 1U:((__PCLK__) / ((__SPEED__) * 3U))) : \ + (((((__PCLK__) / ((__SPEED__) * 25U)) & I2C_CCR_CCR) == 0U)? 1U:((__PCLK__) / ((__SPEED__) * 25U)))) + +/** + * @brief Get the Least significant bits of a 10-Bits address. + * @param __ADDRESS__ This parameter must be a value of a 10-Bits slave address. + * @retval Value between Min_Data=0x00 and Max_Data=0xFF + */ +#define __LL_I2C_10BIT_ADDRESS(__ADDRESS__) ((uint8_t)((uint16_t)((__ADDRESS__) & (uint16_t)(0x00FF)))) + +/** + * @brief Convert a 10-Bits address to a 10-Bits header with Write direction. + * @param __ADDRESS__ This parameter must be a value of a 10-Bits slave address. + * @retval Value between Min_Data=0xF0 and Max_Data=0xF6 + */ +#define __LL_I2C_10BIT_HEADER_WRITE(__ADDRESS__) ((uint8_t)((uint16_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)(0x0300))) >> 7) | (uint16_t)(0xF0)))) + +/** + * @brief Convert a 10-Bits address to a 10-Bits header with Read direction. + * @param __ADDRESS__ This parameter must be a value of a 10-Bits slave address. + * @retval Value between Min_Data=0xF1 and Max_Data=0xF7 + */ +#define __LL_I2C_10BIT_HEADER_READ(__ADDRESS__) ((uint8_t)((uint16_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)(0x0300))) >> 7) | (uint16_t)(0xF1)))) + +/** + * @} + */ + +/** + * @} + */ + +/* 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). + * @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)); +} + +#if defined(I2C_FLTR_ANOFF)&&defined(I2C_FLTR_DNF) +/** + * @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 FLTR ANOFF LL_I2C_ConfigFilters\n + * FLTR 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*TPCLK1) + * This parameter is used to configure the digital noise filter on SDA and SCL input. The digital filter will suppress the spikes with a length of up to DNF[3:0]*TPCLK1. + * @retval None + */ +__STATIC_INLINE void LL_I2C_ConfigFilters(I2C_TypeDef *I2Cx, uint32_t AnalogFilter, uint32_t DigitalFilter) +{ + MODIFY_REG(I2Cx->FLTR, I2C_FLTR_ANOFF | I2C_FLTR_DNF, AnalogFilter | DigitalFilter); +} +#endif +#if defined(I2C_FLTR_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 FLTR 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*TPCLK1) + * This parameter is used to configure the digital noise filter on SDA and SCL input. The digital filter will suppress the spikes with a length of up to DNF[3:0]*TPCLK1. + * @retval None + */ +__STATIC_INLINE void LL_I2C_SetDigitalFilter(I2C_TypeDef *I2Cx, uint32_t DigitalFilter) +{ + MODIFY_REG(I2Cx->FLTR, I2C_FLTR_DNF, DigitalFilter); +} + +/** + * @brief Get the current Digital Noise Filter configuration. + * @rmtoll FLTR 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->FLTR, I2C_FLTR_DNF)); +} +#endif +#if defined(I2C_FLTR_ANOFF) + +/** + * @brief Enable Analog Noise Filter. + * @note This filter can only be programmed when the I2C is disabled (PE = 0). + * @rmtoll FLTR ANOFF LL_I2C_EnableAnalogFilter + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableAnalogFilter(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->FLTR, I2C_FLTR_ANOFF); +} + +/** + * @brief Disable Analog Noise Filter. + * @note This filter can only be programmed when the I2C is disabled (PE = 0). + * @rmtoll FLTR ANOFF LL_I2C_DisableAnalogFilter + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableAnalogFilter(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->FLTR, I2C_FLTR_ANOFF); +} + +/** + * @brief Check if Analog Noise Filter is enabled or disabled. + * @rmtoll FLTR ANOFF 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->FLTR, I2C_FLTR_ANOFF) == (I2C_FLTR_ANOFF)); +} +#endif + +/** + * @brief Enable DMA transmission requests. + * @rmtoll CR2 DMAEN LL_I2C_EnableDMAReq_TX + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableDMAReq_TX(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR2, I2C_CR2_DMAEN); +} + +/** + * @brief Disable DMA transmission requests. + * @rmtoll CR2 DMAEN LL_I2C_DisableDMAReq_TX + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableDMAReq_TX(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR2, I2C_CR2_DMAEN); +} + +/** + * @brief Check if DMA transmission requests are enabled or disabled. + * @rmtoll CR2 DMAEN 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->CR2, I2C_CR2_DMAEN) == (I2C_CR2_DMAEN)); +} + +/** + * @brief Enable DMA reception requests. + * @rmtoll CR2 DMAEN LL_I2C_EnableDMAReq_RX + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableDMAReq_RX(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR2, I2C_CR2_DMAEN); +} + +/** + * @brief Disable DMA reception requests. + * @rmtoll CR2 DMAEN LL_I2C_DisableDMAReq_RX + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableDMAReq_RX(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR2, I2C_CR2_DMAEN); +} + +/** + * @brief Check if DMA reception requests are enabled or disabled. + * @rmtoll CR2 DMAEN 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->CR2, I2C_CR2_DMAEN) == (I2C_CR2_DMAEN)); +} + +/** + * @brief Get the data register address used for DMA transfer. + * @rmtoll DR DR LL_I2C_DMA_GetRegAddr + * @param I2Cx I2C Instance. + * @retval Address of data register + */ +__STATIC_INLINE uint32_t LL_I2C_DMA_GetRegAddr(I2C_TypeDef *I2Cx) +{ + return (uint32_t) & (I2Cx->DR); +} + +/** + * @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 General Call. + * @note When enabled the Address 0x00 is ACKed. + * @rmtoll CR1 ENGC LL_I2C_EnableGeneralCall + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableGeneralCall(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR1, I2C_CR1_ENGC); +} + +/** + * @brief Disable General Call. + * @note When disabled the Address 0x00 is NACKed. + * @rmtoll CR1 ENGC LL_I2C_DisableGeneralCall + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableGeneralCall(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR1, I2C_CR1_ENGC); +} + +/** + * @brief Check if General Call is enabled or disabled. + * @rmtoll CR1 ENGC 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_ENGC) == (I2C_CR1_ENGC)); +} + +/** + * @brief Set the Own Address1. + * @rmtoll OAR1 ADD0 LL_I2C_SetOwnAddress1\n + * OAR1 ADD1_7 LL_I2C_SetOwnAddress1\n + * OAR1 ADD8_9 LL_I2C_SetOwnAddress1\n + * OAR1 ADDMODE 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_ADD0 | I2C_OAR1_ADD1_7 | I2C_OAR1_ADD8_9 | I2C_OAR1_ADDMODE, OwnAddress1 | OwnAddrSize); +} + +/** + * @brief Set the 7bits Own Address2. + * @note This action has no effect if own address2 is enabled. + * @rmtoll OAR2 ADD2 LL_I2C_SetOwnAddress2 + * @param I2Cx I2C Instance. + * @param OwnAddress2 This parameter must be a value between Min_Data=0 and Max_Data=0x7F. + * @retval None + */ +__STATIC_INLINE void LL_I2C_SetOwnAddress2(I2C_TypeDef *I2Cx, uint32_t OwnAddress2) +{ + MODIFY_REG(I2Cx->OAR2, I2C_OAR2_ADD2, OwnAddress2); +} + +/** + * @brief Enable acknowledge on Own Address2 match address. + * @rmtoll OAR2 ENDUAL LL_I2C_EnableOwnAddress2 + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableOwnAddress2(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->OAR2, I2C_OAR2_ENDUAL); +} + +/** + * @brief Disable acknowledge on Own Address2 match address. + * @rmtoll OAR2 ENDUAL LL_I2C_DisableOwnAddress2 + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableOwnAddress2(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->OAR2, I2C_OAR2_ENDUAL); +} + +/** + * @brief Check if Own Address1 acknowledge is enabled or disabled. + * @rmtoll OAR2 ENDUAL 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_ENDUAL) == (I2C_OAR2_ENDUAL)); +} + +/** + * @brief Configure the Peripheral clock frequency. + * @rmtoll CR2 FREQ LL_I2C_SetPeriphClock + * @param I2Cx I2C Instance. + * @param PeriphClock Peripheral Clock (in Hz) + * @retval None + */ +__STATIC_INLINE void LL_I2C_SetPeriphClock(I2C_TypeDef *I2Cx, uint32_t PeriphClock) +{ + MODIFY_REG(I2Cx->CR2, I2C_CR2_FREQ, __LL_I2C_FREQ_HZ_TO_MHZ(PeriphClock)); +} + +/** + * @brief Get the Peripheral clock frequency. + * @rmtoll CR2 FREQ LL_I2C_GetPeriphClock + * @param I2Cx I2C Instance. + * @retval Value of Peripheral Clock (in Hz) + */ +__STATIC_INLINE uint32_t LL_I2C_GetPeriphClock(I2C_TypeDef *I2Cx) +{ + return (uint32_t)(__LL_I2C_FREQ_MHZ_TO_HZ(READ_BIT(I2Cx->CR2, I2C_CR2_FREQ))); +} + +/** + * @brief Configure the Duty cycle (Fast mode only). + * @rmtoll CCR DUTY LL_I2C_SetDutyCycle + * @param I2Cx I2C Instance. + * @param DutyCycle This parameter can be one of the following values: + * @arg @ref LL_I2C_DUTYCYCLE_2 + * @arg @ref LL_I2C_DUTYCYCLE_16_9 + * @retval None + */ +__STATIC_INLINE void LL_I2C_SetDutyCycle(I2C_TypeDef *I2Cx, uint32_t DutyCycle) +{ + MODIFY_REG(I2Cx->CCR, I2C_CCR_DUTY, DutyCycle); +} + +/** + * @brief Get the Duty cycle (Fast mode only). + * @rmtoll CCR DUTY LL_I2C_GetDutyCycle + * @param I2Cx I2C Instance. + * @retval Returned value can be one of the following values: + * @arg @ref LL_I2C_DUTYCYCLE_2 + * @arg @ref LL_I2C_DUTYCYCLE_16_9 + */ +__STATIC_INLINE uint32_t LL_I2C_GetDutyCycle(I2C_TypeDef *I2Cx) +{ + return (uint32_t)(READ_BIT(I2Cx->CCR, I2C_CCR_DUTY)); +} + +/** + * @brief Configure the I2C master clock speed mode. + * @rmtoll CCR FS LL_I2C_SetClockSpeedMode + * @param I2Cx I2C Instance. + * @param ClockSpeedMode This parameter can be one of the following values: + * @arg @ref LL_I2C_CLOCK_SPEED_STANDARD_MODE + * @arg @ref LL_I2C_CLOCK_SPEED_FAST_MODE + * @retval None + */ +__STATIC_INLINE void LL_I2C_SetClockSpeedMode(I2C_TypeDef *I2Cx, uint32_t ClockSpeedMode) +{ + MODIFY_REG(I2Cx->CCR, I2C_CCR_FS, ClockSpeedMode); +} + +/** + * @brief Get the the I2C master speed mode. + * @rmtoll CCR FS LL_I2C_GetClockSpeedMode + * @param I2Cx I2C Instance. + * @retval Returned value can be one of the following values: + * @arg @ref LL_I2C_CLOCK_SPEED_STANDARD_MODE + * @arg @ref LL_I2C_CLOCK_SPEED_FAST_MODE + */ +__STATIC_INLINE uint32_t LL_I2C_GetClockSpeedMode(I2C_TypeDef *I2Cx) +{ + return (uint32_t)(READ_BIT(I2Cx->CCR, I2C_CCR_FS)); +} + +/** + * @brief Configure the SCL, SDA rising time. + * @note This bit can only be programmed when the I2C is disabled (PE = 0). + * @rmtoll TRISE TRISE LL_I2C_SetRiseTime + * @param I2Cx I2C Instance. + * @param RiseTime This parameter must be a value between Min_Data=0x02 and Max_Data=0x3F. + * @retval None + */ +__STATIC_INLINE void LL_I2C_SetRiseTime(I2C_TypeDef *I2Cx, uint32_t RiseTime) +{ + MODIFY_REG(I2Cx->TRISE, I2C_TRISE_TRISE, RiseTime); +} + +/** + * @brief Get the SCL, SDA rising time. + * @rmtoll TRISE TRISE LL_I2C_GetRiseTime + * @param I2Cx I2C Instance. + * @retval Value between Min_Data=0x02 and Max_Data=0x3F + */ +__STATIC_INLINE uint32_t LL_I2C_GetRiseTime(I2C_TypeDef *I2Cx) +{ + return (uint32_t)(READ_BIT(I2Cx->TRISE, I2C_TRISE_TRISE)); +} + +/** + * @brief Configure the SCL high and low period. + * @note This bit can only be programmed when the I2C is disabled (PE = 0). + * @rmtoll CCR CCR LL_I2C_SetClockPeriod + * @param I2Cx I2C Instance. + * @param ClockPeriod This parameter must be a value between Min_Data=0x004 and Max_Data=0xFFF, except in FAST DUTY mode where Min_Data=0x001. + * @retval None + */ +__STATIC_INLINE void LL_I2C_SetClockPeriod(I2C_TypeDef *I2Cx, uint32_t ClockPeriod) +{ + MODIFY_REG(I2Cx->CCR, I2C_CCR_CCR, ClockPeriod); +} + +/** + * @brief Get the SCL high and low period. + * @rmtoll CCR CCR LL_I2C_GetClockPeriod + * @param I2Cx I2C Instance. + * @retval Value between Min_Data=0x004 and Max_Data=0xFFF, except in FAST DUTY mode where Min_Data=0x001. + */ +__STATIC_INLINE uint32_t LL_I2C_GetClockPeriod(I2C_TypeDef *I2Cx) +{ + return (uint32_t)(READ_BIT(I2Cx->CCR, I2C_CCR_CCR)); +} + +/** + * @brief Configure the SCL speed. + * @note This bit can only be programmed when the I2C is disabled (PE = 0). + * @rmtoll CR2 FREQ LL_I2C_ConfigSpeed\n + * TRISE TRISE LL_I2C_ConfigSpeed\n + * CCR FS LL_I2C_ConfigSpeed\n + * CCR DUTY LL_I2C_ConfigSpeed\n + * CCR CCR LL_I2C_ConfigSpeed + * @param I2Cx I2C Instance. + * @param PeriphClock Peripheral Clock (in Hz) + * @param ClockSpeed This parameter must be a value lower than 400kHz (in Hz). + * @param DutyCycle This parameter can be one of the following values: + * @arg @ref LL_I2C_DUTYCYCLE_2 + * @arg @ref LL_I2C_DUTYCYCLE_16_9 + * @retval None + */ +__STATIC_INLINE void LL_I2C_ConfigSpeed(I2C_TypeDef *I2Cx, uint32_t PeriphClock, uint32_t ClockSpeed, + uint32_t DutyCycle) +{ + register uint32_t freqrange = 0x0U; + register uint32_t clockconfig = 0x0U; + + /* Compute frequency range */ + freqrange = __LL_I2C_FREQ_HZ_TO_MHZ(PeriphClock); + + /* Configure I2Cx: Frequency range register */ + MODIFY_REG(I2Cx->CR2, I2C_CR2_FREQ, freqrange); + + /* Configure I2Cx: Rise Time register */ + MODIFY_REG(I2Cx->TRISE, I2C_TRISE_TRISE, __LL_I2C_RISE_TIME(freqrange, ClockSpeed)); + + /* Configure Speed mode, Duty Cycle and Clock control register value */ + if (ClockSpeed > LL_I2C_MAX_SPEED_STANDARD) + { + /* Set Speed mode at fast and duty cycle for Clock Speed request in fast clock range */ + clockconfig = LL_I2C_CLOCK_SPEED_FAST_MODE | \ + __LL_I2C_SPEED_FAST_TO_CCR(PeriphClock, ClockSpeed, DutyCycle) | \ + DutyCycle; + } + else + { + /* Set Speed mode at standard for Clock Speed request in standard clock range */ + clockconfig = LL_I2C_CLOCK_SPEED_STANDARD_MODE | \ + __LL_I2C_SPEED_STANDARD_TO_CCR(PeriphClock, ClockSpeed); + } + + /* Configure I2Cx: Clock control register */ + MODIFY_REG(I2Cx->CCR, (I2C_CCR_FS | I2C_CCR_DUTY | I2C_CCR_CCR), clockconfig); +} + +/** + * @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 SMBUS LL_I2C_SetMode\n + * CR1 SMBTYPE LL_I2C_SetMode\n + * CR1 ENARP 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_SMBUS | I2C_CR1_SMBTYPE | I2C_CR1_ENARP, 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 SMBUS LL_I2C_GetMode\n + * CR1 SMBTYPE LL_I2C_GetMode\n + * CR1 ENARP 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_SMBUS | I2C_CR1_SMBTYPE | I2C_CR1_ENARP)); +} + +/** + * @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 ALERT LL_I2C_EnableSMBusAlert + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableSMBusAlert(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR1, I2C_CR1_ALERT); +} + +/** + * @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 ALERT LL_I2C_DisableSMBusAlert + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableSMBusAlert(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR1, I2C_CR1_ALERT); +} + +/** + * @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 ALERT 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_ALERT) == (I2C_CR1_ALERT)); +} + +/** + * @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 ENPEC LL_I2C_EnableSMBusPEC + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableSMBusPEC(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR1, I2C_CR1_ENPEC); +} + +/** + * @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 ENPEC LL_I2C_DisableSMBusPEC + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableSMBusPEC(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR1, I2C_CR1_ENPEC); +} + +/** + * @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 ENPEC 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_ENPEC) == (I2C_CR1_ENPEC)); +} + +/** + * @} + */ + +/** @defgroup I2C_LL_EF_IT_Management IT_Management + * @{ + */ + +/** + * @brief Enable TXE interrupt. + * @rmtoll CR2 ITEVTEN LL_I2C_EnableIT_TX\n + * CR2 ITBUFEN LL_I2C_EnableIT_TX + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableIT_TX(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR2, I2C_CR2_ITEVTEN | I2C_CR2_ITBUFEN); +} + +/** + * @brief Disable TXE interrupt. + * @rmtoll CR2 ITEVTEN LL_I2C_DisableIT_TX\n + * CR2 ITBUFEN LL_I2C_DisableIT_TX + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableIT_TX(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR2, I2C_CR2_ITEVTEN | I2C_CR2_ITBUFEN); +} + +/** + * @brief Check if the TXE Interrupt is enabled or disabled. + * @rmtoll CR2 ITEVTEN LL_I2C_IsEnabledIT_TX\n + * CR2 ITBUFEN 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->CR2, I2C_CR2_ITEVTEN | I2C_CR2_ITBUFEN) == (I2C_CR2_ITEVTEN | I2C_CR2_ITBUFEN)); +} + +/** + * @brief Enable RXNE interrupt. + * @rmtoll CR2 ITEVTEN LL_I2C_EnableIT_RX\n + * CR2 ITBUFEN LL_I2C_EnableIT_RX + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableIT_RX(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR2, I2C_CR2_ITEVTEN | I2C_CR2_ITBUFEN); +} + +/** + * @brief Disable RXNE interrupt. + * @rmtoll CR2 ITEVTEN LL_I2C_DisableIT_RX\n + * CR2 ITBUFEN LL_I2C_DisableIT_RX + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableIT_RX(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR2, I2C_CR2_ITEVTEN | I2C_CR2_ITBUFEN); +} + +/** + * @brief Check if the RXNE Interrupt is enabled or disabled. + * @rmtoll CR2 ITEVTEN LL_I2C_IsEnabledIT_RX\n + * CR2 ITBUFEN 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->CR2, I2C_CR2_ITEVTEN | I2C_CR2_ITBUFEN) == (I2C_CR2_ITEVTEN | I2C_CR2_ITBUFEN)); +} + +/** + * @brief Enable Events interrupts. + * @note Any of these events will generate interrupt : + * Start Bit (SB) + * Address sent, Address matched (ADDR) + * 10-bit header sent (ADD10) + * Stop detection (STOPF) + * Byte transfer finished (BTF) + * + * @note Any of these events will generate interrupt if Buffer interrupts are enabled too(using unitary function @ref LL_I2C_EnableIT_BUF()) : + * Receive buffer not empty (RXNE) + * Transmit buffer empty (TXE) + * @rmtoll CR2 ITEVTEN LL_I2C_EnableIT_EVT + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableIT_EVT(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR2, I2C_CR2_ITEVTEN); +} + +/** + * @brief Disable Events interrupts. + * @note Any of these events will generate interrupt : + * Start Bit (SB) + * Address sent, Address matched (ADDR) + * 10-bit header sent (ADD10) + * Stop detection (STOPF) + * Byte transfer finished (BTF) + * Receive buffer not empty (RXNE) + * Transmit buffer empty (TXE) + * @rmtoll CR2 ITEVTEN LL_I2C_DisableIT_EVT + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableIT_EVT(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR2, I2C_CR2_ITEVTEN); +} + +/** + * @brief Check if Events interrupts are enabled or disabled. + * @rmtoll CR2 ITEVTEN LL_I2C_IsEnabledIT_EVT + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_EVT(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->CR2, I2C_CR2_ITEVTEN) == (I2C_CR2_ITEVTEN)); +} + +/** + * @brief Enable Buffer interrupts. + * @note Any of these Buffer events will generate interrupt if Events interrupts are enabled too(using unitary function @ref LL_I2C_EnableIT_EVT()) : + * Receive buffer not empty (RXNE) + * Transmit buffer empty (TXE) + * @rmtoll CR2 ITBUFEN LL_I2C_EnableIT_BUF + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableIT_BUF(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR2, I2C_CR2_ITBUFEN); +} + +/** + * @brief Disable Buffer interrupts. + * @note Any of these Buffer events will generate interrupt : + * Receive buffer not empty (RXNE) + * Transmit buffer empty (TXE) + * @rmtoll CR2 ITBUFEN LL_I2C_DisableIT_BUF + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableIT_BUF(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR2, I2C_CR2_ITBUFEN); +} + +/** + * @brief Check if Buffer interrupts are enabled or disabled. + * @rmtoll CR2 ITBUFEN LL_I2C_IsEnabledIT_BUF + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_BUF(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->CR2, I2C_CR2_ITBUFEN) == (I2C_CR2_ITBUFEN)); +} + +/** + * @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 : + * Bus Error detection (BERR) + * Arbitration Loss (ARLO) + * Acknowledge Failure(AF) + * Overrun/Underrun (OVR) + * SMBus Timeout detection (TIMEOUT) + * SMBus PEC error detection (PECERR) + * SMBus Alert pin event detection (SMBALERT) + * @rmtoll CR2 ITERREN LL_I2C_EnableIT_ERR + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableIT_ERR(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR2, I2C_CR2_ITERREN); +} + +/** + * @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 : + * Bus Error detection (BERR) + * Arbitration Loss (ARLO) + * Acknowledge Failure(AF) + * Overrun/Underrun (OVR) + * SMBus Timeout detection (TIMEOUT) + * SMBus PEC error detection (PECERR) + * SMBus Alert pin event detection (SMBALERT) + * @rmtoll CR2 ITERREN LL_I2C_DisableIT_ERR + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableIT_ERR(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR2, I2C_CR2_ITERREN); +} + +/** + * @brief Check if Error interrupts are enabled or disabled. + * @rmtoll CR2 ITERREN 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->CR2, I2C_CR2_ITERREN) == (I2C_CR2_ITERREN)); +} + +/** + * @} + */ + +/** @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 SR1 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->SR1, I2C_SR1_TXE) == (I2C_SR1_TXE)); +} + +/** + * @brief Indicate the status of Byte Transfer Finished flag. + * RESET: When Data byte transfer not done. + * SET: When Data byte transfer succeeded. + * @rmtoll SR1 BTF LL_I2C_IsActiveFlag_BTF + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_BTF(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->SR1, I2C_SR1_BTF) == (I2C_SR1_BTF)); +} + +/** + * @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 SR1 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->SR1, I2C_SR1_RXNE) == (I2C_SR1_RXNE)); +} + +/** + * @brief Indicate the status of Start Bit (master mode). + * @note RESET: When No Start condition. + * SET: When Start condition is generated. + * @rmtoll SR1 SB LL_I2C_IsActiveFlag_SB + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_SB(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->SR1, I2C_SR1_SB) == (I2C_SR1_SB)); +} + +/** + * @brief Indicate the status of Address sent (master mode) or Address matched flag (slave mode). + * @note RESET: Clear default value. + * SET: When the address is fully sent (master mode) or when the received slave address matched with one of the enabled slave address (slave mode). + * @rmtoll SR1 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->SR1, I2C_SR1_ADDR) == (I2C_SR1_ADDR)); +} + +/** + * @brief Indicate the status of 10-bit header sent (master mode). + * @note RESET: When no ADD10 event occured. + * SET: When the master has sent the first address byte (header). + * @rmtoll SR1 ADD10 LL_I2C_IsActiveFlag_ADD10 + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_ADD10(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->SR1, I2C_SR1_ADD10) == (I2C_SR1_ADD10)); +} + +/** + * @brief Indicate the status of Acknowledge failure flag. + * @note RESET: No acknowledge failure. + * SET: When an acknowledge failure is received after a byte transmission. + * @rmtoll SR1 AF LL_I2C_IsActiveFlag_AF + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_AF(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->SR1, I2C_SR1_AF) == (I2C_SR1_AF)); +} + +/** + * @brief Indicate the status of Stop detection flag (slave mode). + * @note RESET: Clear default value. + * SET: When a Stop condition is detected. + * @rmtoll SR1 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->SR1, I2C_SR1_STOPF) == (I2C_SR1_STOPF)); +} + +/** + * @brief Indicate the status of Bus error flag. + * @note RESET: Clear default value. + * SET: When a misplaced Start or Stop condition is detected. + * @rmtoll SR1 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->SR1, I2C_SR1_BERR) == (I2C_SR1_BERR)); +} + +/** + * @brief Indicate the status of Arbitration lost flag. + * @note RESET: Clear default value. + * SET: When arbitration lost. + * @rmtoll SR1 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->SR1, I2C_SR1_ARLO) == (I2C_SR1_ARLO)); +} + +/** + * @brief Indicate the status of Overrun/Underrun flag. + * @note RESET: Clear default value. + * SET: When an overrun/underrun error occurs (Clock Stretching Disabled). + * @rmtoll SR1 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->SR1, I2C_SR1_OVR) == (I2C_SR1_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. + * @rmtoll SR1 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->SR1, I2C_SR1_PECERR) == (I2C_SR1_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. + * @rmtoll SR1 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->SR1, I2C_SR1_TIMEOUT) == (I2C_SR1_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. + * @rmtoll SR1 SMBALERT 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->SR1, I2C_SR1_SMBALERT) == (I2C_SR1_SMBALERT)); +} + +/** + * @brief Indicate the status of Bus Busy flag. + * @note RESET: Clear default value. + * SET: When a Start condition is detected. + * @rmtoll SR2 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->SR2, I2C_SR2_BUSY) == (I2C_SR2_BUSY)); +} + +/** + * @brief Indicate the status of Dual flag. + * @note RESET: Received address matched with OAR1. + * SET: Received address matched with OAR2. + * @rmtoll SR2 DUALF LL_I2C_IsActiveFlag_DUAL + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_DUAL(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->SR2, I2C_SR2_DUALF) == (I2C_SR2_DUALF)); +} + +/** + * @brief Indicate the status of SMBus Host address reception (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 RESET: No SMBus Host address + * SET: SMBus Host address received. + * @note This status is cleared by hardware after a STOP condition or repeated START condition. + * @rmtoll SR2 SMBHOST LL_I2C_IsActiveSMBusFlag_SMBHOST + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsActiveSMBusFlag_SMBHOST(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->SR2, I2C_SR2_SMBHOST) == (I2C_SR2_SMBHOST)); +} + +/** + * @brief Indicate the status of SMBus Device default address reception (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 RESET: No SMBus Device default address + * SET: SMBus Device default address received. + * @note This status is cleared by hardware after a STOP condition or repeated START condition. + * @rmtoll SR2 SMBDEFAULT LL_I2C_IsActiveSMBusFlag_SMBDEFAULT + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsActiveSMBusFlag_SMBDEFAULT(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->SR2, I2C_SR2_SMBDEFAULT) == (I2C_SR2_SMBDEFAULT)); +} + +/** + * @brief Indicate the status of General call address reception (Slave mode). + * @note RESET: No Generall call address + * SET: General call address received. + * @note This status is cleared by hardware after a STOP condition or repeated START condition. + * @rmtoll SR2 GENCALL LL_I2C_IsActiveFlag_GENCALL + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_GENCALL(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->SR2, I2C_SR2_GENCALL) == (I2C_SR2_GENCALL)); +} + +/** + * @brief Indicate the status of Master/Slave flag. + * @note RESET: Slave Mode. + * SET: Master Mode. + * @rmtoll SR2 MSL LL_I2C_IsActiveFlag_MSL + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_MSL(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->SR2, I2C_SR2_MSL) == (I2C_SR2_MSL)); +} + +/** + * @brief Clear Address Matched flag. + * @note Clearing this flag is done by a read access to the I2Cx_SR1 + * register followed by a read access to the I2Cx_SR2 register. + * @rmtoll SR1 ADDR LL_I2C_ClearFlag_ADDR + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_ClearFlag_ADDR(I2C_TypeDef *I2Cx) +{ + __IO uint32_t tmpreg; + tmpreg = I2Cx->SR1; + (void) tmpreg; + tmpreg = I2Cx->SR2; + (void) tmpreg; +} + +/** + * @brief Clear Acknowledge failure flag. + * @rmtoll SR1 AF LL_I2C_ClearFlag_AF + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_ClearFlag_AF(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->SR1, I2C_SR1_AF); +} + +/** + * @brief Clear Stop detection flag. + * @note Clearing this flag is done by a read access to the I2Cx_SR1 + * register followed by a write access to I2Cx_CR1 register. + * @rmtoll SR1 STOPF LL_I2C_ClearFlag_STOP\n + * CR1 PE LL_I2C_ClearFlag_STOP + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_ClearFlag_STOP(I2C_TypeDef *I2Cx) +{ + __IO uint32_t tmpreg; + tmpreg = I2Cx->SR1; + (void) tmpreg; + SET_BIT(I2Cx->CR1, I2C_CR1_PE); +} + +/** + * @brief Clear Bus error flag. + * @rmtoll SR1 BERR LL_I2C_ClearFlag_BERR + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_ClearFlag_BERR(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->SR1, I2C_SR1_BERR); +} + +/** + * @brief Clear Arbitration lost flag. + * @rmtoll SR1 ARLO LL_I2C_ClearFlag_ARLO + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_ClearFlag_ARLO(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->SR1, I2C_SR1_ARLO); +} + +/** + * @brief Clear Overrun/Underrun flag. + * @rmtoll SR1 OVR LL_I2C_ClearFlag_OVR + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_ClearFlag_OVR(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->SR1, I2C_SR1_OVR); +} + +/** + * @brief Clear SMBus PEC error flag. + * @rmtoll SR1 PECERR LL_I2C_ClearSMBusFlag_PECERR + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_ClearSMBusFlag_PECERR(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->SR1, I2C_SR1_PECERR); +} + +/** + * @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 SR1 TIMEOUT LL_I2C_ClearSMBusFlag_TIMEOUT + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_ClearSMBusFlag_TIMEOUT(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->SR1, I2C_SR1_TIMEOUT); +} + +/** + * @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 SR1 SMBALERT LL_I2C_ClearSMBusFlag_ALERT + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_ClearSMBusFlag_ALERT(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->SR1, I2C_SR1_SMBALERT); +} + +/** + * @} + */ + +/** @defgroup I2C_LL_EF_Data_Management Data_Management + * @{ + */ + +/** + * @brief Enable Reset of I2C peripheral. + * @rmtoll CR1 SWRST LL_I2C_EnableReset + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableReset(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR1, I2C_CR1_SWRST); +} + +/** + * @brief Disable Reset of I2C peripheral. + * @rmtoll CR1 SWRST LL_I2C_DisableReset + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableReset(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR1, I2C_CR1_SWRST); +} + +/** + * @brief Check if the I2C peripheral is under reset state or not. + * @rmtoll CR1 SWRST LL_I2C_IsResetEnabled + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsResetEnabled(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->CR1, I2C_CR1_SWRST) == (I2C_CR1_SWRST)); +} + +/** + * @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 or Master mode. + * @rmtoll CR1 ACK 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->CR1, I2C_CR1_ACK, 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 CR1 START LL_I2C_GenerateStartCondition + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_GenerateStartCondition(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR1, I2C_CR1_START); +} + +/** + * @brief Generate a STOP condition after the current byte transfer (master mode). + * @rmtoll CR1 STOP LL_I2C_GenerateStopCondition + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_GenerateStopCondition(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR1, I2C_CR1_STOP); +} + +/** + * @brief Enable bit POS (master/host mode). + * @note In that case, the ACK bit controls the (N)ACK of the next byte received or the PEC bit indicates that the next byte in shift register is a PEC. + * @rmtoll CR1 POS LL_I2C_EnableBitPOS + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableBitPOS(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR1, I2C_CR1_POS); +} + +/** + * @brief Disable bit POS (master/host mode). + * @note In that case, the ACK bit controls the (N)ACK of the current byte received or the PEC bit indicates that the current byte in shift register is a PEC. + * @rmtoll CR1 POS LL_I2C_DisableBitPOS + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableBitPOS(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR1, I2C_CR1_POS); +} + +/** + * @brief Check if bit POS is enabled or disabled. + * @rmtoll CR1 POS LL_I2C_IsEnabledBitPOS + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsEnabledBitPOS(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->CR1, I2C_CR1_POS) == (I2C_CR1_POS)); +} + +/** + * @brief Indicate the value of transfer direction. + * @note RESET: Bus is in read transfer (peripheral point of view). + * SET: Bus is in write transfer (peripheral point of view). + * @rmtoll SR2 TRA 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->SR2, I2C_SR2_TRA)); +} + +/** + * @brief Enable DMA last transfer. + * @note This action mean that next DMA EOT is the last transfer. + * @rmtoll CR2 LAST LL_I2C_EnableLastDMA + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableLastDMA(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR2, I2C_CR2_LAST); +} + +/** + * @brief Disable DMA last transfer. + * @note This action mean that next DMA EOT is not the last transfer. + * @rmtoll CR2 LAST LL_I2C_DisableLastDMA + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableLastDMA(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR2, I2C_CR2_LAST); +} + +/** + * @brief Check if DMA last transfer is enabled or disabled. + * @rmtoll CR2 LAST LL_I2C_IsEnabledLastDMA + * @param I2Cx I2C Instance. + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_I2C_IsEnabledLastDMA(I2C_TypeDef *I2Cx) +{ + return (READ_BIT(I2Cx->CR2, I2C_CR2_LAST) == (I2C_CR2_LAST)); +} + +/** + * @brief Enable transfer or 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 compared, + * or by a START or STOP condition, it is also cleared by software. + * @rmtoll CR1 PEC LL_I2C_EnableSMBusPECCompare + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_EnableSMBusPECCompare(I2C_TypeDef *I2Cx) +{ + SET_BIT(I2Cx->CR1, I2C_CR1_PEC); +} + +/** + * @brief Disable transfer or 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. + * @rmtoll CR1 PEC LL_I2C_DisableSMBusPECCompare + * @param I2Cx I2C Instance. + * @retval None + */ +__STATIC_INLINE void LL_I2C_DisableSMBusPECCompare(I2C_TypeDef *I2Cx) +{ + CLEAR_BIT(I2Cx->CR1, I2C_CR1_PEC); +} + +/** + * @brief Check if the SMBus Packet Error byte transfer or 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 CR1 PEC 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->CR1, I2C_CR1_PEC) == (I2C_CR1_PEC)); +} + +/** + * @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 SR2 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->SR2, I2C_SR2_PEC) >> I2C_SR2_PEC_Pos); +} + +/** + * @brief Read Receive Data register. + * @rmtoll DR DR LL_I2C_ReceiveData8 + * @param I2Cx I2C Instance. + * @retval Value between Min_Data=0x0 and Max_Data=0xFF + */ +__STATIC_INLINE uint8_t LL_I2C_ReceiveData8(I2C_TypeDef *I2Cx) +{ + return (uint8_t)(READ_BIT(I2Cx->DR, I2C_DR_DR)); +} + +/** + * @brief Write in Transmit Data Register . + * @rmtoll DR DR LL_I2C_TransmitData8 + * @param I2Cx I2C Instance. + * @param Data Value between Min_Data=0x0 and Max_Data=0xFF + * @retval None + */ +__STATIC_INLINE void LL_I2C_TransmitData8(I2C_TypeDef *I2Cx, uint8_t Data) +{ + MODIFY_REG(I2Cx->DR, I2C_DR_DR, 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 || I2C3 */ + +/** + * @} + */ + +#ifdef __cplusplus +} +#endif + +#endif /* __STM32F4xx_LL_I2C_H */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/