58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
#ifndef _AHT20_H
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#define _AHT20_H
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#include "user.h"
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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
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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 SENSOR_IDLE 0 //
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#define SENSOR_MEASURE 1 //
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#define SENSOR_COMPLETE 2 //
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typedef struct
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{
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uint8_t Adrr;
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uint16_t timcnt;
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uint8_t ErrFlag;
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uint8_t Step;
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uint16_t SetRTim;
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uint8_t SendByte[MYI2C_Buffer_Size];
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uint8_t 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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uint8_t AHT20_READ_FUNC(MYI2C_Struct *pst,uint8_t device_addr,uint8_t register_addr,uint8_t *pDat,uint8_t len);
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uint8_t AHT20_WRITE_FUNC(MYI2C_Struct *pst,uint8_t device_addr,uint8_t register_addr,uint8_t *pDat,uint8_t len);
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uint8_t CheckCrc8(uint8_t *pDat,uint8_t Lenth);
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/* Exported functions ------------------------------------------------------- */
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void AHT20_Init(MYI2C_Struct *pst,uint16_t ReadTimMS,uint16_t xAddr);
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void AHT20_Handle(MYI2C_Struct *pst);
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#endif
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