

#ifndef __CH59x_I2C_H__
#define __CH59x_I2C_H__

#ifdef __cplusplus
extern "C" {
#endif

/* I2C_transfer_direction */
#define I2C_Direction_Transmitter    ((uint8_t)0x00)
#define I2C_Direction_Receiver       ((uint8_t)0x01)

/* I2C ADD0 mask */
#define OADDR1_ADD0_Set              ((uint16_t)0x0001)
#define OADDR1_ADD0_Reset            ((uint16_t)0xFFFE)

/* I2C_NACK_position */
#define I2C_NACKPosition_Next        ((uint16_t)RB_I2C_POS)
#define I2C_NACKPosition_Current     ((uint16_t)~RB_I2C_POS)

/* I2C_PEC_position */
#define I2C_PECPosition_Next         ((uint16_t)RB_I2C_POS)
#define I2C_PECPosition_Current      ((uint16_t)~RB_I2C_POS)

/* I2C_SMBus_alert_pin_level */
#define I2C_SMBusAlert_Low           ((uint16_t)RB_I2C_ALERT)
#define I2C_SMBusAlert_High          ((uint16_t)~RB_I2C_ALERT)

/* I2C FLAG mask */
#define FLAG_Mask                    ((uint32_t)0x00FFFFFF)

/* I2C Interrupt Enable mask */
#define ITEN_Mask                    ((uint32_t)0x07000000)

/* I2C_mode */
typedef enum
{
    I2C_Mode_I2C = 0x0000,
    I2C_Mode_SMBusDevice = 0x0002,
    I2C_Mode_SMBusHost = 0x000A,
} I2C_ModeTypeDef;

/* I2C_duty_cycle_in_fast_mode */
typedef enum
{
    I2C_DutyCycle_16_9 = RB_I2C_DUTY, /* I2C fast mode Tlow/Thigh = 16/9 */
    I2C_DutyCycle_2 = 0x0000,         /* I2C fast mode Tlow/Thigh = 2 */
} I2C_DutyTypeDef;

/* I2C_acknowledgement - Enables or disables the acknowledgement.*/
typedef enum
{
    I2C_Ack_Enable = RB_I2C_ACK,
    I2C_Ack_Disable = 0x0000,
} I2C_AckTypeDef;

/* I2C_acknowledged_address - Specifies if 7-bit or 10-bit address is acknowledged. */
typedef enum
{
    I2C_AckAddr_7bit = 0x4000,
    I2C_AckAddr_10bit = 0xC000,
} I2C_AckAddrTypeDef;

/* I2C_interrupts_definition */
typedef enum
{
    I2C_IT_BUF = 0x0400, /* Buffer interrupt mask. */
    I2C_IT_EVT = 0x0200, /* Event interrupt mask. */
    I2C_IT_ERR = 0x0100, /* Error interrupt mask. */
} I2C_ITTypeDef;

/* 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)

/* 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)

/* 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)

/****************I2C Master Events (Events grouped in order of communication)********************/

#define I2C_EVENT_MASTER_MODE_SELECT                         ((uint32_t)0x00030001) /* BUSY, MSL and SB flag */
#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 */
#define I2C_EVENT_MASTER_MODE_ADDRESS10                      ((uint32_t)0x00030008) /* BUSY, MSL and ADD10 flags */
#define I2C_EVENT_MASTER_BYTE_RECEIVED                       ((uint32_t)0x00030040) /* BUSY, MSL and RXNE flags */
#define I2C_EVENT_MASTER_BYTE_TRANSMITTING                   ((uint32_t)0x00070080) /* TRA, BUSY, MSL, TXE flags */
#define I2C_EVENT_MASTER_BYTE_TRANSMITTED                    ((uint32_t)0x00070084) /* TRA, BUSY, MSL, TXE and BTF flags */

/******************I2C Slave Events (Events grouped in order of communication)******************/

#define I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED             ((uint32_t)0x00020002) /* BUSY and ADDR flags */
#define I2C_EVENT_SLAVE_TRANSMITTER_ADDRESS_MATCHED          ((uint32_t)0x00060082) /* TRA, BUSY, TXE and ADDR flags */
#define I2C_EVENT_SLAVE_RECEIVER_SECONDADDRESS_MATCHED       ((uint32_t)0x00820000) /* DUALF and BUSY flags */
#define I2C_EVENT_SLAVE_TRANSMITTER_SECONDADDRESS_MATCHED    ((uint32_t)0x00860080) /* DUALF, TRA, BUSY and TXE flags */
#define I2C_EVENT_SLAVE_GENERALCALLADDRESS_MATCHED           ((uint32_t)0x00120000) /* GENCALL and BUSY flags */
#define I2C_EVENT_SLAVE_BYTE_RECEIVED                        ((uint32_t)0x00020040) /* BUSY and RXNE flags */
#define I2C_EVENT_SLAVE_STOP_DETECTED                        ((uint32_t)0x00000010) /* STOPF flag */
#define I2C_EVENT_SLAVE_BYTE_TRANSMITTED                     ((uint32_t)0x00060084) /* TRA, BUSY, TXE and BTF flags */
#define I2C_EVENT_SLAVE_BYTE_TRANSMITTING                    ((uint32_t)0x00060080) /* TRA, BUSY and TXE flags */
#define I2C_EVENT_SLAVE_ACK_FAILURE                          ((uint32_t)0x00000400) /* AF flag */

void I2C_Init(I2C_ModeTypeDef I2C_Mode, UINT32 I2C_ClockSpeed, I2C_DutyTypeDef I2C_DutyCycle,
              I2C_AckTypeDef I2C_Ack, I2C_AckAddrTypeDef I2C_AckAddr, UINT16 I2C_OwnAddress1);
void I2C_Cmd(FunctionalState NewState);
void I2C_GenerateSTART(FunctionalState NewState);
void I2C_GenerateSTOP(FunctionalState NewState);
void I2C_AcknowledgeConfig(FunctionalState NewState);
void I2C_OwnAddress2Config(uint8_t Address);
void I2C_DualAddressCmd(FunctionalState NewState);
void I2C_GeneralCallCmd(FunctionalState NewState);
void I2C_ITConfig(I2C_ITTypeDef I2C_IT, FunctionalState NewState);
void I2C_SendData(uint8_t Data);

uint8_t I2C_ReceiveData(void);

void I2C_Send7bitAddress(uint8_t Address, uint8_t I2C_Direction);
void I2C_SoftwareResetCmd(FunctionalState NewState);
void I2C_NACKPositionConfig(uint16_t I2C_NACKPosition);
void I2C_SMBusAlertConfig(uint16_t I2C_SMBusAlert);
void I2C_TransmitPEC(FunctionalState NewState);
void I2C_PECPositionConfig(uint16_t I2C_PECPosition);
void I2C_CalculatePEC(FunctionalState NewState);

uint8_t I2C_GetPEC(void);

void I2C_ARPCmd(FunctionalState NewState);
void I2C_StretchClockCmd(FunctionalState NewState);
void I2C_FastModeDutyCycleConfig(uint16_t I2C_DutyCycle);

/****************************************************************************************
 *                         I2C State Monitoring Functions
 ****************************************************************************************/
uint8_t    I2C_CheckEvent(uint32_t I2C_EVENT);
uint32_t   I2C_GetLastEvent(void);
FlagStatus I2C_GetFlagStatus(uint32_t I2C_FLAG);

void     I2C_ClearFlag(uint32_t I2C_FLAG);
ITStatus I2C_GetITStatus(uint32_t I2C_IT);
void     I2C_ClearITPendingBit(uint32_t I2C_IT);

#ifdef __cplusplus
}
#endif

#endif // __CH59x_I2C_H__
