#ifndef  _AHT20_H
#define  _AHT20_H

#include "user.h"





#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
#define	MYI2C_Buffer_Size	 20


#define Wait_Ack_time        199//等待ACK应答时间，单位:微秒
#define MinReadTim           500//读取传感器最小间隔时间，单位:毫秒
#define PowerOnTim           10//上电延迟10毫秒
#define MeasureTim           150//等待测量结果延迟150毫秒



#define SENSOR_IDLE      0  //
#define SENSOR_MEASURE   1  //
#define SENSOR_COMPLETE  2  //


typedef struct
{

	uint8_t 	Adrr;
	uint16_t  	timcnt;
	uint8_t 	ErrFlag;
	uint8_t 	Step;	
	uint16_t  	SetRTim;

	uint8_t SendByte[MYI2C_Buffer_Size];
	uint8_t ReadByte[MYI2C_Buffer_Size];	
	float RH;//湿度
	float T;//温度
}MYI2C_Struct;

extern  MYI2C_Struct SENx;


uint8_t AHT20_READ_FUNC(MYI2C_Struct *pst,uint8_t device_addr,uint8_t register_addr,uint8_t *pDat,uint8_t len);
uint8_t AHT20_WRITE_FUNC(MYI2C_Struct *pst,uint8_t device_addr,uint8_t register_addr,uint8_t *pDat,uint8_t len);
uint8_t  CheckCrc8(uint8_t *pDat,uint8_t Lenth);

/* Exported functions ------------------------------------------------------- */
void  AHT20_Init(MYI2C_Struct *pst,uint16_t ReadTimMS,uint16_t xAddr);
void  AHT20_Handle(MYI2C_Struct *pst);





#endif