mirror of https://github.com/ARMmbed/mbed-os.git
182 lines
5.2 KiB
C
182 lines
5.2 KiB
C
/****************************************************************************//**
|
|
* @file i2c.h
|
|
* @version V1.00
|
|
* $Revision: 5 $
|
|
* $Date: 15/06/05 5:06p $
|
|
* @brief Nano100 series I2C driver header file
|
|
*
|
|
* @note
|
|
* Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
|
|
*****************************************************************************/
|
|
#ifndef __I2C_H__
|
|
#define __I2C_H__
|
|
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
|
|
/** @addtogroup NANO100_Device_Driver NANO100 Device Driver
|
|
@{
|
|
*/
|
|
|
|
/** @addtogroup NANO100_I2C_Driver I2C Driver
|
|
@{
|
|
*/
|
|
|
|
/** @addtogroup NANO100_I2C_EXPORTED_CONSTANTS I2C Exported Constants
|
|
@{
|
|
*/
|
|
|
|
#define I2C_STA 0x08 /*!< I2C START bit value */
|
|
#define I2C_STO 0x04 /*!< I2C STOP bit value*/
|
|
#define I2C_SI 0x10 /*!< I2C SI bit value */
|
|
#define I2C_AA 0x02 /*!< I2C ACK bit value */
|
|
|
|
#define I2C_GCMODE_ENABLE 1 /*!< Enable I2C GC Mode */
|
|
#define I2C_GCMODE_DISABLE 0 /*!< Disable I2C GC Mode */
|
|
|
|
/*@}*/ /* end of group NANO100_I2C_EXPORTED_CONSTANTS */
|
|
|
|
|
|
/** @addtogroup NANO100_I2C_EXPORTED_FUNCTIONS I2C Exported Functions
|
|
@{
|
|
*/
|
|
|
|
/**
|
|
* @brief This macro sets the I2C control register at one time.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @param[in] u8Ctrl is the register value of I2C control register.
|
|
* @return none
|
|
* \hideinitializer
|
|
*/
|
|
#define I2C_SET_CONTROL_REG(i2c, u8Ctrl) ( (i2c)->CON = ((i2c)->CON & ~0x1e) | u8Ctrl )
|
|
|
|
/**
|
|
* @brief This macro only set START bit to the control register of I2C module.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @return none
|
|
* \hideinitializer
|
|
*/
|
|
#define I2C_START(i2c) ( (i2c)->CON = ((i2c)->CON & ~I2C_CON_I2C_STS_Msk) | I2C_CON_START_Msk )
|
|
|
|
/**
|
|
* @brief This macro only set STOP bit to the control register of I2C module.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @return none
|
|
* \hideinitializer
|
|
*/
|
|
static __INLINE void I2C_STOP(I2C_T *i2c)
|
|
{
|
|
i2c->CON |= (I2C_CON_I2C_STS_Msk | I2C_CON_STOP_Msk);
|
|
while(i2c->CON & I2C_CON_STOP_Msk);
|
|
}
|
|
|
|
/**
|
|
* @brief This macro will return when I2C module is ready.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @return none
|
|
* \hideinitializer
|
|
*/
|
|
static __INLINE void I2C_WAIT_READY(I2C_T *i2c)
|
|
{
|
|
while(!(i2c->INTSTS & I2C_INTSTS_INTSTS_Msk));
|
|
i2c->INTSTS |= I2C_INTSTS_INTSTS_Msk;
|
|
}
|
|
|
|
/**
|
|
* @brief This macro returns the data stored in data register of I2C module.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @return Data.
|
|
* \hideinitializer
|
|
*/
|
|
#define I2C_GET_DATA(i2c) ( (i2c)->DATA )
|
|
|
|
/**
|
|
* @brief This macro writes the data to data register of I2C module.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @param[in] u8Data is the data which will be write to data register of I2C module.
|
|
* @return none
|
|
* \hideinitializer
|
|
*/
|
|
#define I2C_SET_DATA(i2c, u8Data) ( (i2c)->DATA = u8Data )
|
|
|
|
/**
|
|
* @brief This macro returns the status of I2C module.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @return Status.
|
|
* \hideinitializer
|
|
*/
|
|
#define I2C_GET_STATUS(i2c) ( (i2c)->STATUS )
|
|
|
|
/**
|
|
* @brief This macro returns timeout flag.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @return Status.
|
|
* @retval 0 Flag is not set.
|
|
* @retval 1 Flag is set.
|
|
* \hideinitializer
|
|
*/
|
|
#define I2C_GET_TIMEOUT_FLAG(i2c) ( ((i2c)->INTSTS & I2C_INTSTS_TIF_Msk) == I2C_INTSTS_TIF_Msk ? 1:0 )
|
|
|
|
/**
|
|
* @brief This macro clears timeout flag.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @return none
|
|
* \hideinitializer
|
|
*/
|
|
#define I2C_CLEAR_TIMEOUT_FLAG(i2c) ( (i2c)->INTSTS |= I2C_INTSTS_TIF_Msk )
|
|
|
|
/**
|
|
* @brief This macro returns wakeup flag.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @return Status.
|
|
* @retval 0 Flag is not set.
|
|
* @retval 1 Flag is set.
|
|
* \hideinitializer
|
|
*/
|
|
#define I2C_GET_WAKEUP_FLAG(i2c) ( ((i2c)->WKUPSTS & I2C_WKUPSTS_WKUPIF_Msk) == I2C_WKUPSTS_WKUPIF_Msk ? 1:0 )
|
|
|
|
/**
|
|
* @brief This macro clears wakeup flag.
|
|
* @param[in] i2c is the base address of I2C module.
|
|
* @return none
|
|
* \hideinitializer
|
|
*/
|
|
#define I2C_CLEAR_WAKEUP_FLAG(i2c) ( (i2c)->WKUPSTS |= I2C_WKUPSTS_WKUPIF_Msk )
|
|
|
|
uint32_t I2C_Open(I2C_T *i2c, uint32_t u32BusClock);
|
|
void I2C_Close(I2C_T *i2c);
|
|
void I2C_ClearTimeoutFlag(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_SetBusClockFreq(I2C_T *i2c, uint32_t u32BusClock);
|
|
uint32_t I2C_GetIntFlag(I2C_T *i2c);
|
|
void I2C_ClearIntFlag(I2C_T *i2c);
|
|
uint32_t I2C_GetStatus(I2C_T *i2c);
|
|
uint32_t I2C_GetData(I2C_T *i2c);
|
|
void I2C_SetData(I2C_T *i2c, uint8_t u8Data);
|
|
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);
|
|
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);
|
|
|
|
/*@}*/ /* end of group NANO100_I2C_EXPORTED_FUNCTIONS */
|
|
|
|
/*@}*/ /* end of group NANO100_I2C_Driver */
|
|
|
|
/*@}*/ /* end of group NANO100_Device_Driver */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif //__I2C_H__
|
|
|
|
/*** (C) COPYRIGHT 2014 Nuvoton Technology Corp. ***/
|