/********************************** (C) COPYRIGHT ******************************* * File Name : ch32v30x_i2c.h * Author : WCH * Version : V1.0.0 * Date : 2021/06/06 * Description : This file contains all the functions prototypes for the * I2C firmware library. * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd. * SPDX-License-Identifier: Apache-2.0 *******************************************************************************/ #ifndef __CH32V30x_I2C_H #define __CH32V30x_I2C_H #ifdef __cplusplus extern "C" { #endif #include "ch32v30x.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