stm32f10x_i2c.h

/**
  ******************************************************************************
  * @file    stm32f10x_i2c.h
  * @author  MCD Application Team
  * @version V3.1.0
  * @date    06/19/2009
  * @brief   This file contains all the functions prototypes for the I2C firmware 
  *          library.
  ******************************************************************************
  * @copy
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>
  */ 

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F10x_I2C_H
#define __STM32F10x_I2C_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"

/** @addtogroup STM32F10x_StdPeriph_Driver
  * @{
  */

/** @addtogroup I2C
  * @{
  */

/** @defgroup I2C_Exported_Types
  * @{
  */

/** 
  * @brief  I2C Init structure definition  
  */

typedef struct
{
  uint32_t I2C_ClockSpeed;          /*!< Specifies the clock frequency.
                                         This parameter must be set to a value lower than 400kHz */

  uint16_t I2C_Mode;                /*!< Specifies the I2C mode.
                                         This parameter can be a value of @ref I2C_mode */

  uint16_t I2C_DutyCycle;           /*!< Specifies the I2C fast mode duty cycle.
                                         This parameter can be a value of @ref I2C_duty_cycle_in_fast_mode */

  uint16_t I2C_OwnAddress1;         /*!< Specifies the first device own address.
                                         This parameter can be a 7-bit or 10-bit address. */

  uint16_t I2C_Ack;                 /*!< Enables or disables the acknowledgement.
                                         This parameter can be a value of @ref I2C_acknowledgement */

  uint16_t I2C_AcknowledgedAddress; /*!< Specifies if 7-bit or 10-bit address is acknowledged.
                                         This parameter can be a value of @ref I2C_acknowledged_address */
}I2C_InitTypeDef;

/**
  * @}
  */ 


/** @defgroup I2C_Exported_Constants
  * @{
  */

#define IS_I2C_ALL_PERIPH(PERIPH) (((PERIPH) == I2C1) || \
                                   ((PERIPH) == I2C2))
/** @defgroup I2C_mode 
  * @{
  */

#define I2C_Mode_I2C                    ((uint16_t)0x0000)
#define I2C_Mode_SMBusDevice            ((uint16_t)0x0002)  
#define I2C_Mode_SMBusHost              ((uint16_t)0x000A)
#define IS_I2C_MODE(MODE) (((MODE) == I2C_Mode_I2C) || \
                           ((MODE) == I2C_Mode_SMBusDevice) || \
                           ((MODE) == I2C_Mode_SMBusHost))
/**
  * @}
  */

/** @defgroup I2C_duty_cycle_in_fast_mode 
  * @{
  */

#define I2C_DutyCycle_16_9              ((uint16_t)0x4000) /*!< I2C fast mode Tlow/Thigh = 16/9 */
#define I2C_DutyCycle_2                 ((uint16_t)0xBFFF) /*!< I2C fast mode Tlow/Thigh = 2 */
#define IS_I2C_DUTY_CYCLE(CYCLE) (((CYCLE) == I2C_DutyCycle_16_9) || \
                                  ((CYCLE) == I2C_DutyCycle_2))
/**
  * @}
  */ 

/** @defgroup I2C_acknowledgement
  * @{
  */

#define I2C_Ack_Enable                  ((uint16_t)0x0400)
#define I2C_Ack_Disable                 ((uint16_t)0x0000)
#define IS_I2C_ACK_STATE(STATE) (((STATE) == I2C_Ack_Enable) || \
                                 ((STATE) == I2C_Ack_Disable))
/**
  * @}
  */

/** @defgroup I2C_transfer_direction 
  * @{
  */

#define  I2C_Direction_Transmitter      ((uint8_t)0x00)
#define  I2C_Direction_Receiver         ((uint8_t)0x01)
#define IS_I2C_DIRECTION(DIRECTION) (((DIRECTION) == I2C_Direction_Transmitter) || \
                                     ((DIRECTION) == I2C_Direction_Receiver))
/**
  * @}
  */

/** @defgroup I2C_acknowledged_address 
  * @{
  */

#define I2C_AcknowledgedAddress_7bit    ((uint16_t)0x4000)
#define I2C_AcknowledgedAddress_10bit   ((uint16_t)0xC000)
#define IS_I2C_ACKNOWLEDGE_ADDRESS(ADDRESS) (((ADDRESS) == I2C_AcknowledgedAddress_7bit) || \
                                             ((ADDRESS) == I2C_AcknowledgedAddress_10bit))
/**
  * @}
  */ 

/** @defgroup I2C_registers 
  * @{
  */

#define I2C_Register_CR1                ((uint8_t)0x00)
#define I2C_Register_CR2                ((uint8_t)0x04)
#define I2C_Register_OAR1               ((uint8_t)0x08)
#define I2C_Register_OAR2               ((uint8_t)0x0C)
#define I2C_Register_DR                 ((uint8_t)0x10)
#define I2C_Register_SR1                ((uint8_t)0x14)
#define I2C_Register_SR2                ((uint8_t)0x18)
#define I2C_Register_CCR                ((uint8_t)0x1C)
#define I2C_Register_TRISE              ((uint8_t)0x20)
#define IS_I2C_REGISTER(REGISTER) (((REGISTER) == I2C_Register_CR1) || \
                                   ((REGISTER) == I2C_Register_CR2) || \
                                   ((REGISTER) == I2C_Register_OAR1) || \
                                   ((REGISTER) == I2C_Register_OAR2) || \
                                   ((REGISTER) == I2C_Register_DR) || \
                                   ((REGISTER) == I2C_Register_SR1) || \
                                   ((REGISTER) == I2C_Register_SR2) || \
                                   ((REGISTER) == I2C_Register_CCR) || \
                                   ((REGISTER) == I2C_Register_TRISE))
/**
  * @}
  */

/** @defgroup I2C_SMBus_alert_pin_level 
  * @{
  */

#define I2C_SMBusAlert_Low              ((uint16_t)0x2000)
#define I2C_SMBusAlert_High             ((uint16_t)0xDFFF)
#define IS_I2C_SMBUS_ALERT(ALERT) (((ALERT) == I2C_SMBusAlert_Low) || \
                                   ((ALERT) == I2C_SMBusAlert_High))
/**
  * @}
  */

/** @defgroup I2C_PEC_position 
  * @{
  */

#define I2C_PECPosition_Next            ((uint16_t)0x0800)
#define I2C_PECPosition_Current         ((uint16_t)0xF7FF)
#define IS_I2C_PEC_POSITION(POSITION) (((POSITION) == I2C_PECPosition_Next) || \
                                       ((POSITION) == I2C_PECPosition_Current))
/**
  * @}
  */ 

/** @defgroup I2C_interrupts_definition 
  * @{
  */

#define I2C_IT_BUF                      ((uint16_t)0x0400)
#define I2C_IT_EVT                      ((uint16_t)0x0200)
#define I2C_IT_ERR                      ((uint16_t)0x0100)
#define IS_I2C_CONFIG_IT(IT) ((((IT) & (uint16_t)0xF8FF) == 0x00) && ((IT) != 0x00))
/**
  * @}
  */ 

/** @defgroup I2C_interrupts_definition 
  * @{
  */

#define I2C_IT_SMBALERT                 ((uint32_t)0x01008000)
#define I2C_IT_TIMEOUT                  ((uint32_t)0x01004000)
#define I2C_IT_PECERR                   ((uint32_t)0x01001000)
#define I2C_IT_OVR                      ((uint32_t)0x01000800)
#define I2C_IT_AF                       ((uint32_t)0x01000400)
#define I2C_IT_ARLO                     ((uint32_t)0x01000200)
#define I2C_IT_BERR                     ((uint32_t)0x01000100)
#define I2C_IT_TXE                      ((uint32_t)0x06000080)
#define I2C_IT_RXNE                     ((uint32_t)0x06000040)
#define I2C_IT_STOPF                    ((uint32_t)0x02000010)
#define I2C_IT_ADD10                    ((uint32_t)0x02000008)
#define I2C_IT_BTF                      ((uint32_t)0x02000004)
#define I2C_IT_ADDR                     ((uint32_t)0x02000002)
#define I2C_IT_SB                       ((uint32_t)0x02000001)

#define IS_I2C_CLEAR_IT(IT) ((((IT) & (uint16_t)0x20FF) == 0x00) && ((IT) != (uint16_t)0x00))

#define IS_I2C_GET_IT(IT) (((IT) == I2C_IT_SMBALERT) || ((IT) == I2C_IT_TIMEOUT) || \
                           ((IT) == I2C_IT_PECERR) || ((IT) == I2C_IT_OVR) || \
                           ((IT) == I2C_IT_AF) || ((IT) == I2C_IT_ARLO) || \
                           ((IT) == I2C_IT_BERR) || ((IT) == I2C_IT_TXE) || \
                           ((IT) == I2C_IT_RXNE) || ((IT) == I2C_IT_STOPF) || \
                           ((IT) == I2C_IT_ADD10) || ((IT) == I2C_IT_BTF) || \
                           ((IT) == I2C_IT_ADDR) || ((IT) == I2C_IT_SB))
/**
  * @}
  */

/** @defgroup I2C_flags_definition 
  * @{
  */

/** 
  * @brief  SR2 register flags  
  */

#define I2C_FLAG_DUALF                  ((uint32_t)0x00800000)
#define I2C_FLAG_SMBHOST                ((uint32_t)0x00400000)
#define I2C_FLAG_SMBDEFAULT             ((uint32_t)0x00200000)
#define I2C_FLAG_GENCALL                ((uint32_t)0x00100000)
#define I2C_FLAG_TRA                    ((uint32_t)0x00040000)
#define I2C_FLAG_BUSY                   ((uint32_t)0x00020000)
#define I2C_FLAG_MSL                    ((uint32_t)0x00010000)

/** 
  * @brief  SR1 register flags  
  */

#define I2C_FLAG_SMBALERT               ((uint32_t)0x10008000)
#define I2C_FLAG_TIMEOUT                ((uint32_t)0x10004000)
#define I2C_FLAG_PECERR                 ((uint32_t)0x10001000)
#define I2C_FLAG_OVR                    ((uint32_t)0x10000800)
#define I2C_FLAG_AF                     ((uint32_t)0x10000400)
#define I2C_FLAG_ARLO                   ((uint32_t)0x10000200)
#define I2C_FLAG_BERR                   ((uint32_t)0x10000100)
#define I2C_FLAG_TXE                    ((uint32_t)0x10000080)
#define I2C_FLAG_RXNE                   ((uint32_t)0x10000040)
#define I2C_FLAG_STOPF                  ((uint32_t)0x10000010)
#define I2C_FLAG_ADD10                  ((uint32_t)0x10000008)
#define I2C_FLAG_BTF                    ((uint32_t)0x10000004)
#define I2C_FLAG_ADDR                   ((uint32_t)0x10000002)
#define I2C_FLAG_SB                     ((uint32_t)0x10000001)

#define IS_I2C_CLEAR_FLAG(FLAG) ((((FLAG) & (uint16_t)0x20FF) == 0x00) && ((FLAG) != (uint16_t)0x00))

#define IS_I2C_GET_FLAG(FLAG) (((FLAG) == I2C_FLAG_DUALF) || ((FLAG) == I2C_FLAG_SMBHOST) || \
                               ((FLAG) == I2C_FLAG_SMBDEFAULT) || ((FLAG) == I2C_FLAG_GENCALL) || \
                               ((FLAG) == I2C_FLAG_TRA) || ((FLAG) == I2C_FLAG_BUSY) || \
                               ((FLAG) == I2C_FLAG_MSL) || ((FLAG) == I2C_FLAG_SMBALERT) || \
                               ((FLAG) == I2C_FLAG_TIMEOUT) || ((FLAG) == I2C_FLAG_PECERR) || \
                               ((FLAG) == I2C_FLAG_OVR) || ((FLAG) == I2C_FLAG_AF) || \
                               ((FLAG) == I2C_FLAG_ARLO) || ((FLAG) == I2C_FLAG_BERR) || \
                               ((FLAG) == I2C_FLAG_TXE) || ((FLAG) == I2C_FLAG_RXNE) || \
                               ((FLAG) == I2C_FLAG_STOPF) || ((FLAG) == I2C_FLAG_ADD10) || \
                               ((FLAG) == I2C_FLAG_BTF) || ((FLAG) == I2C_FLAG_ADDR) || \
                               ((FLAG) == I2C_FLAG_SB))
/**
  * @}
  */

/** @defgroup I2C_Events 
  * @{
  */

/** 
  * @brief  EV1
  */

#define  I2C_EVENT_SLAVE_TRANSMITTER_ADDRESS_MATCHED       ((uint32_t)0x00060082) /* TRA, BUSY, TXE and ADDR flags */
#define  I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED          ((uint32_t)0x00020002) /* BUSY and ADDR flags */
#define  I2C_EVENT_SLAVE_TRANSMITTER_SECONDADDRESS_MATCHED ((uint32_t)0x00860080)  /* DUALF, TRA, BUSY and TXE flags */
#define  I2C_EVENT_SLAVE_RECEIVER_SECONDADDRESS_MATCHED    ((uint32_t)0x00820000)  /* DUALF and BUSY flags */
#define  I2C_EVENT_SLAVE_GENERALCALLADDRESS_MATCHED        ((uint32_t)0x00120000)  /* GENCALL and BUSY flags */

/** 
  * @brief  EV2  
  */

#define  I2C_EVENT_SLAVE_BYTE_RECEIVED                     ((uint32_t)0x00020040)  /* BUSY and RXNE flags */

/** 
  * @brief  EV3  
  */

#define  I2C_EVENT_SLAVE_BYTE_TRANSMITTED                  ((uint32_t)0x00060084)  /* TRA, BUSY, TXE and BTF flags */

/** 
  * @brief  EV4
  */

#define  I2C_EVENT_SLAVE_STOP_DETECTED                     ((uint32_t)0x00000010)  /* STOPF flag */

/** 
  * @brief  EV5
  */

#define  I2C_EVENT_MASTER_MODE_SELECT                      ((uint32_t)0x00030001)  /* BUSY, MSL and SB flag */

/** 
  * @brief  EV6
  */

#define  I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED        ((uint32_t)0x00070082)  /* BUSY, MSL, ADDR, TXE and TRA flags */
#define  I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED           ((uint32_t)0x00030002)  /* BUSY, MSL and ADDR flags */

/** 
  * @brief  EV7
  */

#define  I2C_EVENT_MASTER_BYTE_RECEIVED                    ((uint32_t)0x00030040)  /* BUSY, MSL and RXNE flags */

/** 
  * @brief  EV8
  */

#define I2C_EVENT_MASTER_BYTE_TRANSMITTING                 ((uint32_t)0x00070080) /* TRA, BUSY, MSL, TXE flags */

/** 
  * @brief  EV8_2
  */

#define  I2C_EVENT_MASTER_BYTE_TRANSMITTED                 ((uint32_t)0x00070084)  /* TRA, BUSY, MSL, TXE and BTF flags */

/** 
  * @brief  EV9
  */

#define  I2C_EVENT_MASTER_MODE_ADDRESS10                   ((uint32_t)0x00030008)  /* BUSY, MSL and ADD10 flags */

/** 
  * @brief  EV3_2
  */

#define  I2C_EVENT_SLAVE_ACK_FAILURE                       ((uint32_t)0x00000400)  /* AF flag */

#define IS_I2C_EVENT(EVENT) (((EVENT) == I2C_EVENT_SLAVE_TRANSMITTER_ADDRESS_MATCHED) || \
                             ((EVENT) == I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED) || \
                             ((EVENT) == I2C_EVENT_SLAVE_TRANSMITTER_SECONDADDRESS_MATCHED) || \
                             ((EVENT) == I2C_EVENT_SLAVE_RECEIVER_SECONDADDRESS_MATCHED) || \
                             ((EVENT) == I2C_EVENT_SLAVE_GENERALCALLADDRESS_MATCHED) || \
                             ((EVENT) == I2C_EVENT_SLAVE_BYTE_RECEIVED) || \
                             ((EVENT) == (I2C_EVENT_SLAVE_BYTE_RECEIVED | I2C_FLAG_DUALF)) || \
                             ((EVENT) == (I2C_EVENT_SLAVE_BYTE_RECEIVED | I2C_FLAG_GENCALL)) || \
                             ((EVENT) == I2C_EVENT_SLAVE_BYTE_TRANSMITTED) || \
                             ((EVENT) == (I2C_EVENT_SLAVE_BYTE_TRANSMITTED | I2C_FLAG_DUALF)) || \
                             ((EVENT) == (I2C_EVENT_SLAVE_BYTE_TRANSMITTED | I2C_FLAG_GENCALL)) || \
                             ((EVENT) == I2C_EVENT_SLAVE_STOP_DETECTED) || \
                             ((EVENT) == I2C_EVENT_MASTER_MODE_SELECT) || \
                             ((EVENT) == I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED) || \
                             ((EVENT) == I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED) || \
                             ((EVENT) == I2C_EVENT_MASTER_BYTE_RECEIVED) || \
                             ((EVENT) == I2C_EVENT_MASTER_BYTE_TRANSMITTED) || \
                             ((EVENT) == I2C_EVENT_MASTER_BYTE_TRANSMITTING) || \
                             ((EVENT) == I2C_EVENT_MASTER_MODE_ADDRESS10) || \
                             ((EVENT) == I2C_EVENT_SLAVE_ACK_FAILURE))
/**
  * @}
  */

/** @defgroup I2C_own_address1 
  * @{
  */

#define IS_I2C_OWN_ADDRESS1(ADDRESS1) ((ADDRESS1) <= 0x3FF)
/**
  * @}
  */

/** @defgroup I2C_clock_speed 
  * @{
  */

#define IS_I2C_CLOCK_SPEED(SPEED) (((SPEED) >= 0x1) && ((SPEED) <= 400000))
/**
  * @}
  */

/**
  * @}
  */

/** @defgroup I2C_Exported_Macros
  * @{
  */

/**
  * @}
  */

/** @defgroup I2C_Exported_Functions
  * @{
  */

void I2C_DeInit(I2C_TypeDef* I2Cx);
void I2C_Init(I2C_TypeDef* I2Cx, I2C_InitTypeDef* I2C_InitStruct);
void I2C_StructInit(I2C_InitTypeDef* I2C_InitStruct);
void I2C_Cmd(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_DMACmd(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_DMALastTransferCmd(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_GenerateSTART(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_GenerateSTOP(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_AcknowledgeConfig(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_OwnAddress2Config(I2C_TypeDef* I2Cx, uint8_t Address);
void I2C_DualAddressCmd(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_GeneralCallCmd(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_ITConfig(I2C_TypeDef* I2Cx, uint16_t I2C_IT, FunctionalState NewState);
void I2C_SendData(I2C_TypeDef* I2Cx, uint8_t Data);
uint8_t I2C_ReceiveData(I2C_TypeDef* I2Cx);
void I2C_Send7bitAddress(I2C_TypeDef* I2Cx, uint8_t Address, uint8_t I2C_Direction);
uint16_t I2C_ReadRegister(I2C_TypeDef* I2Cx, uint8_t I2C_Register);
void I2C_SoftwareResetCmd(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_SMBusAlertConfig(I2C_TypeDef* I2Cx, uint16_t I2C_SMBusAlert);
void I2C_TransmitPEC(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_PECPositionConfig(I2C_TypeDef* I2Cx, uint16_t I2C_PECPosition);
void I2C_CalculatePEC(I2C_TypeDef* I2Cx, FunctionalState NewState);
uint8_t I2C_GetPEC(I2C_TypeDef* I2Cx);
void I2C_ARPCmd(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_StretchClockCmd(I2C_TypeDef* I2Cx, FunctionalState NewState);
void I2C_FastModeDutyCycleConfig(I2C_TypeDef* I2Cx, uint16_t I2C_DutyCycle);
uint32_t I2C_GetLastEvent(I2C_TypeDef* I2Cx);
ErrorStatus I2C_CheckEvent(I2C_TypeDef* I2Cx, uint32_t I2C_EVENT);
FlagStatus I2C_GetFlagStatus(I2C_TypeDef* I2Cx, uint32_t I2C_FLAG);
void I2C_ClearFlag(I2C_TypeDef* I2Cx, uint32_t I2C_FLAG);
ITStatus I2C_GetITStatus(I2C_TypeDef* I2Cx, uint32_t I2C_IT);
void I2C_ClearITPendingBit(I2C_TypeDef* I2Cx, uint32_t I2C_IT);

#ifdef __cplusplus
}
#endif

#endif /*__STM32F10x_I2C_H */
/**
  * @}
  */ 

/**
  * @}
  */ 

/**
  * @}
  */ 

/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/