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/****************************************************************************//**
* @file nu_i2c.h
* @brief I2C driver header file
*
* SPDX-License-Identifier: Apache-2.0
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#ifndef __NU_I2C_H__
#define __NU_I2C_H__
#ifdef __cplusplus
extern "C"
{
#endif
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup I2C_Driver I2C Driver
@{
*/
/** @addtogroup I2C_EXPORTED_CONSTANTS I2C Exported Constants
@{
*/
/*---------------------------------------------------------------------------------------------------------*/
/* I2C_CTL constant definitions. */
/*---------------------------------------------------------------------------------------------------------*/
#define I2C_CTL_STA_SI 0x28UL /*!< I2C_CTL setting for I2C control bits. It would set STA and SI bits \hideinitializer */
#define I2C_CTL_STA_SI_AA 0x2CUL /*!< I2C_CTL setting for I2C control bits. It would set STA, SI and AA bits \hideinitializer */
#define I2C_CTL_STO_SI 0x18UL /*!< I2C_CTL setting for I2C control bits. It would set STO and SI bits \hideinitializer */
#define I2C_CTL_STO_SI_AA 0x1CUL /*!< I2C_CTL setting for I2C control bits. It would set STO, SI and AA bits \hideinitializer */
#define I2C_CTL_SI 0x08UL /*!< I2C_CTL setting for I2C control bits. It would set SI bit \hideinitializer */
#define I2C_CTL_SI_AA 0x0CUL /*!< I2C_CTL setting for I2C control bits. It would set SI and AA bits \hideinitializer */
#define I2C_CTL_STA 0x20UL /*!< I2C_CTL setting for I2C control bits. It would set STA bit \hideinitializer */
#define I2C_CTL_STO 0x10UL /*!< I2C_CTL setting for I2C control bits. It would set STO bit \hideinitializer */
#define I2C_CTL_AA 0x04UL /*!< I2C_CTL setting for I2C control bits. It would set AA bit \hideinitializer */
/*---------------------------------------------------------------------------------------------------------*/
/* I2C GCMode constant definitions. */
/*---------------------------------------------------------------------------------------------------------*/
#define I2C_GCMODE_ENABLE 1 /*!< Enable I2C GC Mode \hideinitializer */
#define I2C_GCMODE_DISABLE 0 /*!< Disable I2C GC Mode \hideinitializer */
/*@}*/ /* end of group I2C_EXPORTED_CONSTANTS */
/** @addtogroup 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
* @param[in] u8Ctrl A byte writes to I2C control register
*
* @return None
*
* @details Set I2C_CTL register to control I2C bus conditions of START, STOP, SI, ACK.
* \hideinitializer
*/
#define I2C_SET_CONTROL_REG(i2c, u8Ctrl) ((i2c)->CTL0 = ((i2c)->CTL0 & ~0x3c) | (u8Ctrl))
/**
* @brief The macro is used to set START condition of I2C Bus
*
* @param[in] i2c Specify I2C port
*
* @return None
*
* @details Set the I2C bus START condition in I2C_CTL register.
* \hideinitializer
*/
#define I2C_START(i2c) ((i2c)->CTL0 = ((i2c)->CTL0 & ~I2C_CTL0_SI_Msk) | I2C_CTL0_STA_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, the SI flag will be set in I2C_CTL register.
* \hideinitializer
*/
#define I2C_WAIT_READY(i2c) while(!((i2c)->CTL0 & I2C_CTL0_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 register.
* \hideinitializer
*/
#define I2C_GET_DATA(i2c) ((i2c)->DAT)
/**
* @brief Write a Data to I2C Data Register
*
* @param[in] i2c Specify I2C port
* @param[in] u8Data A byte that writes to data register
*
* @return None
*
* @details When write a data to I2C_DAT register, the I2C controller will shift it to I2C bus.
* \hideinitializer
*/
#define I2C_SET_DATA(i2c, u8Data) ((i2c)->DAT = (u8Data))
/**
* @brief Get I2C Bus status code
*
* @param[in] i2c Specify I2C port
*
* @return I2C status code
*
* @details To get this status code to monitor I2C bus event.
* \hideinitializer
*/
#define I2C_GET_STATUS(i2c) ((i2c)->STATUS0)
/**
* @brief Get Time-out flag from I2C Bus
*
* @param[in] i2c Specify I2C port
*
* @retval 0 I2C Bus time-out is not happened
* @retval 1 I2C Bus time-out is happened
*
* @details When I2C bus occurs time-out event, the time-out flag will be set.
* \hideinitializer
*/
#define I2C_GET_TIMEOUT_FLAG(i2c) ( ((i2c)->TOCTL & I2C_TOCTL_TOIF_Msk) == I2C_TOCTL_TOIF_Msk ? 1:0 )
/**
* @brief To get wake-up flag from I2C Bus
*
* @param[in] i2c Specify I2C port
*
* @retval 0 Chip is not woken-up from power-down mode
* @retval 1 Chip is woken-up from power-down mode
*
* @details I2C bus occurs wake-up event, wake-up flag will be set.
* \hideinitializer
*/
#define I2C_GET_WAKEUP_FLAG(i2c) ( ((i2c)->WKSTS & I2C_WKSTS_WKIF_Msk) == I2C_WKSTS_WKIF_Msk ? 1:0 )
/**
* @brief To clear wake-up flag
*
* @param[in] i2c Specify I2C port
*
* @return None
*
* @details If wake-up flag is set, use this macro to clear it.
* \hideinitializer
*/
#define I2C_CLEAR_WAKEUP_FLAG(i2c) ((i2c)->WKSTS = I2C_WKSTS_WKIF_Msk)
/**
* @brief Enable RX PDMA function.
* @param[in] i2c The pointer of the specified I2C module.
* @return None.
* @details Set RXPDMAEN bit of I2C_CTL1 register to enable RX PDMA transfer function.
* \hideinitializer
*/
#define I2C_ENABLE_RX_PDMA(i2c) ((i2c)->CTL1 |= I2C_CTL1_RXPDMAEN_Msk)
/**
* @brief Enable TX PDMA function.
* @param[in] i2c The pointer of the specified I2C module.
* @return None.
* @details Set TXPDMAEN bit of I2C_CTL1 register to enable TX PDMA transfer function.
* \hideinitializer
*/
#define I2C_ENABLE_TX_PDMA(i2c) ((i2c)->CTL1 |= I2C_CTL1_TXPDMAEN_Msk)
/**
* @brief Disable RX PDMA transfer.
* @param[in] i2c The pointer of the specified I2C module.
* @return None.
* @details Clear RXPDMAEN bit of I2C_CTL1 register to disable RX PDMA transfer function.
* \hideinitializer
*/
#define I2C_DISABLE_RX_PDMA(i2c) ((i2c)->CTL1 &= ~I2C_CTL1_RXPDMAEN_Msk)
/**
* @brief Disable TX PDMA transfer.
* @param[in] i2c The pointer of the specified I2C module.
* @return None.
* @details Clear TXPDMAEN bit of I2C_CTL1 register to disable TX PDMA transfer function.
* \hideinitializer
*/
#define I2C_DISABLE_TX_PDMA(i2c) ((i2c)->CTL1 &= ~I2C_CTL1_TXPDMAEN_Msk)
/**
* @brief Enable PDMA stretch function.
* @param[in] i2c The pointer of the specified I2C module.
* @return None.
* @details Enable this function is to stretch bus by hardware after PDMA transfer is done if SI is not cleared.
* \hideinitializer
*/
#define I2C_ENABLE_PDMA_STRETCH(i2c) ((i2c)->CTL1 |= I2C_CTL1_PDMASTR_Msk)
/**
* @brief Disable PDMA stretch function.
* @param[in] i2c The pointer of the specified I2C module.
* @return None.
* @details I2C will send STOP after PDMA transfers done automatically.
* \hideinitializer
*/
#define I2C_DISABLE_PDMA_STRETCH(i2c) ((i2c)->CTL1 &= ~I2C_CTL1_PDMASTR_Msk)
/**
* @brief Reset PDMA function.
* @param[in] i2c The pointer of the specified I2C module.
* @return None.
* @details I2C PDMA engine will be reset after this function is called.
* \hideinitializer
*/
#define I2C_DISABLE_RST_PDMA(i2c) ((i2c)->CTL1 |= I2C_CTL1_PDMARST_Msk)
/*---------------------------------------------------------------------------------------------------------*/
/* inline functions */
/*---------------------------------------------------------------------------------------------------------*/
/* Declare these inline functions here to avoid MISRA C 2004 rule 8.1 error */
__STATIC_INLINE void I2C_STOP(I2C_T *i2c);
/**
* @brief The macro is used to set STOP condition of I2C Bus
*
* @param[in] i2c Specify I2C port
*
* @return None
*
* @details Set the I2C bus STOP condition in I2C_CTL register.
*/
__STATIC_INLINE void I2C_STOP(I2C_T *i2c)
{
(i2c)->CTL0 |= (I2C_CTL0_SI_Msk | I2C_CTL0_STO_Msk);
while (i2c->CTL0 & I2C_CTL0_STO_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_SetBusClockFreq(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);
uint8_t I2C_WriteByte(I2C_T *i2c, uint8_t u8SlaveAddr, uint8_t data);
uint32_t I2C_WriteMultiBytes(I2C_T *i2c, uint8_t u8SlaveAddr, uint8_t data[], uint32_t u32wLen);
uint8_t I2C_WriteByteOneReg(I2C_T *i2c, uint8_t u8SlaveAddr, uint8_t u8DataAddr, uint8_t data);
uint32_t I2C_WriteMultiBytesOneReg(I2C_T *i2c, uint8_t u8SlaveAddr, uint8_t u8DataAddr, uint8_t data[], uint32_t u32wLen);
uint8_t I2C_WriteByteTwoRegs(I2C_T *i2c, uint8_t u8SlaveAddr, uint16_t u16DataAddr, uint8_t data);
uint32_t I2C_WriteMultiBytesTwoRegs(I2C_T *i2c, uint8_t u8SlaveAddr, uint16_t u16DataAddr, uint8_t data[], uint32_t u32wLen);
uint8_t I2C_ReadByte(I2C_T *i2c, uint8_t u8SlaveAddr);
uint32_t I2C_ReadMultiBytes(I2C_T *i2c, uint8_t u8SlaveAddr, uint8_t rdata[], uint32_t u32rLen);
uint8_t I2C_ReadByteOneReg(I2C_T *i2c, uint8_t u8SlaveAddr, uint8_t u8DataAddr);
uint32_t I2C_ReadMultiBytesOneReg(I2C_T *i2c, uint8_t u8SlaveAddr, uint8_t u8DataAddr, uint8_t rdata[], uint32_t u32rLen);
uint8_t I2C_ReadByteTwoRegs(I2C_T *i2c, uint8_t u8SlaveAddr, uint16_t u16DataAddr);
uint32_t I2C_ReadMultiBytesTwoRegs(I2C_T *i2c, uint8_t u8SlaveAddr, uint16_t u16DataAddr, uint8_t rdata[], uint32_t u32rLen);
/*@}*/ /* end of group I2C_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group I2C_Driver */
/*@}*/ /* end of group Standard_Driver */
#ifdef __cplusplus
}
#endif
#endif
|
