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/********************************** (C) COPYRIGHT *******************************
* File Name : ch32f20x_i2c.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/08/08
* Description : This file contains all the functions prototypes for the
* I2C firmware library.
*******************************************************************************/
#ifndef __CH32F20x_I2C_H
#define __CH32F20x_I2C_H
#ifdef __cplusplus
extern "C" {
#endif
#include "ch32f20x.h"
/* 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;
/* I2C_mode */
#define I2C_Mode_I2C ((uint16_t)0x0000)
#define I2C_Mode_SMBusDevice ((uint16_t)0x0002)
#define I2C_Mode_SMBusHost ((uint16_t)0x000A)
/* 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 */
/* I2C_acknowledgement */
#define I2C_Ack_Enable ((uint16_t)0x0400)
#define I2C_Ack_Disable ((uint16_t)0x0000)
/* I2C_transfer_direction */
#define I2C_Direction_Transmitter ((uint8_t)0x00)
#define I2C_Direction_Receiver ((uint8_t)0x01)
/* I2C_acknowledged_address */
#define I2C_AcknowledgedAddress_7bit ((uint16_t)0x4000)
#define I2C_AcknowledgedAddress_10bit ((uint16_t)0xC000)
/* I2C_registers */
#define I2C_Register_CTLR1 ((uint8_t)0x00)
#define I2C_Register_CTLR2 ((uint8_t)0x04)
#define I2C_Register_OADDR1 ((uint8_t)0x08)
#define I2C_Register_OADDR2 ((uint8_t)0x0C)
#define I2C_Register_DATAR ((uint8_t)0x10)
#define I2C_Register_STAR1 ((uint8_t)0x14)
#define I2C_Register_STAR2 ((uint8_t)0x18)
#define I2C_Register_CKCFGR ((uint8_t)0x1C)
#define I2C_Register_RTR ((uint8_t)0x20)
/* I2C_SMBus_alert_pin_level */
#define I2C_SMBusAlert_Low ((uint16_t)0x2000)
#define I2C_SMBusAlert_High ((uint16_t)0xDFFF)
/* I2C_PEC_position */
#define I2C_PECPosition_Next ((uint16_t)0x0800)
#define I2C_PECPosition_Current ((uint16_t)0xF7FF)
/* I2C_NACK_position */
#define I2C_NACKPosition_Next ((uint16_t)0x0800)
#define I2C_NACKPosition_Current ((uint16_t)0xF7FF)
/* I2C_interrupts_definition */
#define I2C_IT_BUF ((uint16_t)0x0400)
#define I2C_IT_EVT ((uint16_t)0x0200)
#define I2C_IT_ERR ((uint16_t)0x0100)
/* 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_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_NACKPositionConfig(I2C_TypeDef* I2Cx, uint16_t I2C_NACKPosition);
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);
/****************************************************************************************
* I2C State Monitoring Functions
****************************************************************************************/
ErrorStatus I2C_CheckEvent(I2C_TypeDef* I2Cx, uint32_t I2C_EVENT);
uint32_t I2C_GetLastEvent(I2C_TypeDef* I2Cx);
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
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