rt-thread-official/bsp/nuvoton_m05x/Libraries/StdDriver/inc/i2c.h

188 lines
6.7 KiB
C

/**************************************************************************//**
* @file I2C.h
* @version V3.0
* $Revision: 9 $
* $Date: 14/02/10 3:04p $
* @brief M051 Series I2C Driver Header File
*
* @note
* Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
*
******************************************************************************/
#ifndef __I2C_H__
#define __I2C_H__
#include "M051Series.h"
#ifdef __cplusplus
extern "C"
{
#endif
/** @addtogroup M051_Device_Driver M051 Device Driver
@{
*/
/** @addtogroup M051_I2C_Driver I2C Driver
@{
*/
/** @addtogroup M051_I2C_EXPORTED_CONSTANTS I2C Exported Constants
@{
*/
/*---------------------------------------------------------------------------------------------------------*/
/* I2CON constant definitions. */
/*---------------------------------------------------------------------------------------------------------*/
#define I2C_I2CON_STA_STO_SI 0x38UL /*!< I2CON setting for I2C control bits. It would set STA, STO and SI bits */
#define I2C_I2CON_STA_STO_SI_AA 0x3CUL /*!< I2CON setting for I2C control bits. It would set STA, STO, SI and AA bits */
#define I2C_I2CON_STA_SI 0x28UL /*!< I2CON setting for I2C control bits. It would set STA and SI bits */
#define I2C_I2CON_STA_SI_AA 0x2CUL /*!< I2CON setting for I2C control bits. It would set STA, SI and AA bits */
#define I2C_I2CON_STO_SI 0x18UL /*!< I2CON setting for I2C control bits. It would set STO and SI bits */
#define I2C_I2CON_STO_SI_AA 0x1CUL /*!< I2CON setting for I2C control bits. It would set STO, SI and AA bits */
#define I2C_I2CON_SI 0x08UL /*!< I2CON setting for I2C control bits. It would set SI bit */
#define I2C_I2CON_SI_AA 0x0CUL /*!< I2CON setting for I2C control bits. It would set SI and AA bits */
#define I2C_I2CON_STA 0x20UL /*!< I2CON setting for I2C control bits. It would set STA bit */
#define I2C_I2CON_STO 0x10UL /*!< I2CON setting for I2C control bits. It would set STO bit */
#define I2C_I2CON_AA 0x04UL /*!< I2CON setting for I2C control bits. It would set AA bit */
/*@}*/ /* end of group M051_I2C_EXPORTED_CONSTANTS */
/** @addtogroup M051_I2C_EXPORTED_FUNCTIONS I2C Exported Functions
@{
*/
/**
* @brief The macro is used to set I2C bus condition at One Time
*
* @param[in] i2c Specify I2C port
* @return None
*
* @details To control I2C bus conditions of START, STOP, SI, ACK.
*/
#define I2C_SET_CONTROL_REG(i2c, u8Ctrl) ((i2c)->I2CON = ((i2c)->I2CON & ~0x3c) | u8Ctrl)
/**
* @brief The macro is used to set START condition of I2C Bus
*
* @param[in] i2c Specify I2C port
* @return None
*
* @details To set the I2C bus START condition
*/
#define I2C_START(i2c) ((i2c)->I2CON = ((i2c)->I2CON & ~I2C_I2CON_SI_Msk) | I2C_I2CON_STA_Msk)
/**
* @brief The macro is used to set STOP condition of I2C Bus
*
* @param[in] i2c Specify I2C port
* @return None
*
* @details To set the I2C bus STOP condition
*/
#define I2C_STOP(i2c) ((i2c)->I2CON = ((i2c)->I2CON & ~I2C_I2CON_SI_Msk) | I2C_I2CON_STO_Msk)
/**
* @brief The macro is used to wait I2C bus status get ready
*
* @param[in] i2c Specify I2C port
* @return None
*
* @details When a new status is presented of I2C bus, SI flag will be set.
*/
#define I2C_WAIT_READY(i2c) while(!((i2c)->I2CON & I2C_I2CON_SI_Msk))
/**
* @brief The macro is used to Read I2C Bus Data Register
*
* @param[in] i2c Specify I2C port
* @return A byte of I2C data register
*
* @details I2C controller read data from bus and save it in I2CDAT
*/
#define I2C_GET_DATA(i2c) ((i2c)->I2CDAT)
/**
* @brief The macro is used to write a Data to I2C Data Register
*
* @param[in] i2c Specify I2C port
* @return None
*
* @details I2C controller send a byte data to bus.
*/
#define I2C_SET_DATA(i2c, u8Data) ((i2c)->I2CDAT = u8Data)
/**
* @brief The macro is used to get I2C Bus Status Code
*
* @param[in] i2c Specify I2C port
* @return I2C status code
*
* @details To get ths status code of I2C Bus.
*/
#define I2C_GET_STATUS(i2c) ((i2c)->I2CSTATUS)
/**
* @brief The macro is used to get time-out flag
*
* @param[in] i2c Specify I2C port
* @return Time-out flag status
* @retval 0 Bus time-out is not happened
* @retval 1 Bus time-out is happened
*
* @details To get time-out flag of I2C bus
*/
#define I2C_GET_TIMEOUT_FLAG(i2c) ( (i2c->I2CTOC & I2C_I2CTOC_TIF_Msk) == I2C_I2CTOC_TIF_Msk ? 1:0 )
/**
* @brief The macro is used to get wake-up flag
*
* @param[in] i2c Specify I2C port
* @return Wake-up flag status
* @retval 0 Chip is not woken-up from power-down mode
* @retval 1 Chip is woken-up from power-down mode
*
* @detail To get wake-up status of I2C bus
*/
#define I2C_GET_WAKEUP_FLAG(i2c) ( ((i2c)->I2CWKUPSTS & I2C_I2CWKUPSTS_WKUPIF_Msk) == I2C_I2CWKUPSTS_WKUPIF_Msk ? 1:0 )
/**
* @brief The macro is used to clear wake-up flag
*
* @param[in] i2c Specify I2C port
* @return None
*
* @detail To clear wake-up flag of I2C bus when wake-up flag is set.
*/
#define I2C_CLEAR_WAKEUP_FLAG(i2c) ((i2c)->I2CWKUPSTS |= I2C_I2CWKUPSTS_WKUPIF_Msk)
void I2C_ClearTimeoutFlag(I2C_T *i2c);
void I2C_Close(I2C_T *i2c);
void I2C_Trigger(I2C_T *i2c, uint8_t u8Start, uint8_t u8Stop, uint8_t u8Si, uint8_t u8Ack);
void I2C_DisableInt(I2C_T *i2c);
void I2C_EnableInt(I2C_T *i2c);
uint32_t I2C_GetBusClockFreq(I2C_T *i2c);
uint32_t I2C_GetIntFlag(I2C_T *i2c);
uint32_t I2C_GetStatus(I2C_T *i2c);
uint32_t I2C_Open(I2C_T *i2c, uint32_t u32BusClock);
uint8_t I2C_GetData(I2C_T *i2c);
void I2C_SetSlaveAddr(I2C_T *i2c, uint8_t u8SlaveNo, uint8_t u8SlaveAddr, uint8_t u8GCMode);
void I2C_SetSlaveAddrMask(I2C_T *i2c, uint8_t u8SlaveNo, uint8_t u8SlaveAddrMask);
uint32_t I2C_SetClockBusFreq(I2C_T *i2c, uint32_t u32BusClock);
void I2C_EnableTimeout(I2C_T *i2c, uint8_t u8LongTimeout);
void I2C_DisableTimeout(I2C_T *i2c);
void I2C_EnableWakeup(I2C_T *i2c);
void I2C_DisableWakeup(I2C_T *i2c);
void I2C_SetData(I2C_T *i2c, uint8_t u8Data);
/*@}*/ /* end of group M051_I2C_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group M051_I2C_Driver */
/*@}*/ /* end of group M051_Device_Driver */
#ifdef __cplusplus
}
#endif
#endif //__I2C_H__