99 lines
3.0 KiB
C
99 lines
3.0 KiB
C
#ifndef _MYI2C_h_
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#define _MYI2C_h_
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#define ARM32 //定义该行为ARM类型,注释为C51类型
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#ifdef ARM32
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#include "ch32f20x.h"
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#define IIC_SDA_PORT GPIOB
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#define SDA_Pin GPIO_Pin_7
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#define IIC_SCL_PORT GPIOB
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#define SCL_Pin GPIO_Pin_6
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#else
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#include "STC12C5A60S2.h"
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#define IIC_SDA_PIN P03
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#define IIC_SCL_PIN P02
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#endif
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//用户修改区
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#define MYI2C_delay_us_cnt 16//延迟1微秒，所需的计数，请根据MCU调整
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#define MYI2C_Tick 10//定时调用时间，单位:毫秒，请根据定时调用时间设置，定时调用时间设置范围1-100ms
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#define MYI2C_Buffer_Size 20//接收缓冲数组大小，最大读取字节数
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//内部定义，请勿擅自修改
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#define Wait_Ack_time 199//等待ACK应答时间，单位:微秒
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#define MinReadTim 500//读取传感器最小间隔时间，单位:毫秒
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#define PowerOnTim 10//上电延迟10毫秒
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#define MeasureTim 150//等待测量结果延迟150毫秒
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#define SDA_OUT 0 //SDA设置为输出
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#define SDA_IN 1 //SDA设置为输入
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#define SCL_OUT 2 //SCL设置为输出
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#define SDA_R 0 //读取SDA数据
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#define SCL_H 1
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#define SCL_L 2
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#define SDA_H 3
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#define SDA_L 4
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#define SENSOR_IDLE 0 //
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#define SENSOR_MEASURE 1 //
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#define SENSOR_COMPLETE 2 //
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#define MYI2C_SCK_OD_Mode MYI2C_GPIO_MODE(SCL_OUT)
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#define MYI2C_SDA_OD_Mode MYI2C_GPIO_MODE(SDA_OUT)
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#define MYI2C_SDA_IN_Mode MYI2C_GPIO_MODE(SDA_IN)
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#define MYI2C_SCK_Clr() MYI2C_GPIO_DATA(SCL_L);MYI2C_Delay_us(2)
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#define MYI2C_SCK_Set() MYI2C_GPIO_DATA(SCL_H);MYI2C_Delay_us(4)
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#define MYI2C_SDA_Clr() MYI2C_GPIO_DATA(SDA_L);MYI2C_Delay_us(2)
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#define MYI2C_SDA_Set() MYI2C_GPIO_DATA(SDA_H);MYI2C_Delay_us(2)
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#define I2C_SDA_PIN P03
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#define I2C_SCL_PIN P02
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typedef struct
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{
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unsigned char Adrr;
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unsigned int timcnt;
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unsigned char ErrFlag;
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unsigned char Step;
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unsigned int SetRTim;
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unsigned char SendByte[MYI2C_Buffer_Size];
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unsigned char ReadByte[MYI2C_Buffer_Size];
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float RH;//湿度
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float T;//温度
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}MYI2C_Struct;
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extern MYI2C_Struct SENx;
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/* Exported functions ------------------------------------------------------- */
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void MYI2C_Init(MYI2C_Struct *pst,unsigned int ReadTimMS,unsigned char xAddr);
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void MYI2C_Handle(MYI2C_Struct *pst);
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/* Private functions ---------------------------------------------------------*/
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void MYI2C_Delay_us(unsigned long nTim);
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void MYI2C_IIC_Start(void);
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void MYI2C_IIC_Stop(void);
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void MYI2C_IIC_Ack(unsigned char ack);
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unsigned char MYI2C_IIC_Wait_Ack(unsigned int wait_time);
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void MYI2C_Write_IIC_Byte(unsigned char dat);
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unsigned char MYI2C_Read_IIC_Byte(void);
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//void MYI2C_Reset(void);
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unsigned char MYI2C_READ_FUNC (MYI2C_Struct *pst,unsigned char device_addr,unsigned char register_addr,unsigned char *pDat,unsigned char len);
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unsigned char MYI2C_WRITE_FUNC(MYI2C_Struct *pst,unsigned char device_addr,unsigned char register_addr,unsigned char *pDat,unsigned char len);
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void MYI2C_GPIO_MODE(unsigned char TYP);
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unsigned char MYI2C_GPIO_DATA(unsigned char TYP);
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unsigned char CheckCrc8(unsigned char *pDat,unsigned char Lenth);
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#endif //_MYI2C_h_
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