AHT20_ATY.h File Reference

Familiar functions of AHT20 for all embedded device. More...

#include "INCLUDE_ATY.h"
#include "HW_I2C_ATY.h"

Go to the source code of this file.

Macros
#define	ATH20_ADDRESS   0x38
#define	AHT20_SOFT_RST   0xBA
#define	AHT20_NOR_MODE   0xA8
#define	AHT20_INIT   0xBE
#define	AHT20_TRIG_MEASURE   0xAC
#define	AHT20_STATUS   0x00

Functions
uint8_t	AHT20_TemHumGet (uint16_t *ht)

Detailed Description

Familiar functions of AHT20 for all embedded device.

Parameters

Project

DEVICE_GENERAL_ATY_LIB

Author

ATY

Copyright

• Copyright 2017 - 2023 MZ-ATY
• This code follows:
  • MZ-ATY Various Contents Joint Statement - https://mengze.top/MZ-ATY_VCJS
  • CC 4.0 BY-NC-SA - https://creativecommons.org/licenses/by-nc-sa/4.0/
• Your use will be deemed to have accepted the terms of this statement.

Version

• 1_01_220804 > ATY
  1. Preliminary version, first Release

Definition in file AHT20_ATY.h.

Macro Definition Documentation

AHT20_INIT

#define AHT20_INIT   0xBE

Definition at line 41 of file AHT20_ATY.h.

AHT20_NOR_MODE

#define AHT20_NOR_MODE   0xA8

Definition at line 40 of file AHT20_ATY.h.

AHT20_SOFT_RST

#define AHT20_SOFT_RST   0xBA

Definition at line 39 of file AHT20_ATY.h.

AHT20_STATUS

#define AHT20_STATUS   0x00

Definition at line 43 of file AHT20_ATY.h.

AHT20_TRIG_MEASURE

#define AHT20_TRIG_MEASURE   0xAC

Definition at line 42 of file AHT20_ATY.h.

ATH20_ADDRESS

#define ATH20_ADDRESS   0x38

Definition at line 38 of file AHT20_ATY.h.

Function Documentation

AHT20_TemHumGet()

uint8_t AHT20_TemHumGet

(

uint16_t *

ht

)

Definition at line 271 of file AHT20_ATY.c.

{
    if(AHT20_InitFlag == 0)
    {
        if(AHT20_Init() == 1)
        {
            AHT20_InitFlag = 2;     // init fail
        }
        else
        {
            AHT20_InitFlag = 1;
        }
    }
    if(AHT20_InitFlag == 2)
    {
#ifdef __DEBUG_AHT20_ATY
        printf("\r\n0xFF");
#endif /* __DEBUG_AHT20_ATY */
        return 0xFF;
    }
    else if(AHT20_InitFlag == 1)
    {
        // Init success
        uint32_t tempHT_uint32[2] = {0};
        float tempHT_f[2] = {0};
        if(AHT20_ReadHT(tempHT_uint32) == 0)
        {
            if((tempHT_uint32[0] && tempHT_uint32[1]) != 0)
            {
                AHT20_CalcResult(tempHT_uint32, tempHT_f);
                ht[0] = ((tempHT_f[0] * 1000) + 5) / 10;
                ht[1] = ((tempHT_f[1] * 1000) + 5) / 10;
#ifdef __DEBUG_AHT20_ATY
                printf("\r\nHum: %.2f - Tem: %.2f", tempHT_f[0], tempHT_f[1] - 50);
#endif /* __DEBUG_AHT20_ATY */
            }
            else
            {
#ifdef __DEBUG_AHT20_ATY
                printf("\r\n0xFD");
#endif /* __DEBUG_AHT20_ATY */
                return 0xFD;
            }
        }
        else
        {
#ifdef __DEBUG_AHT20_ATY
            printf("\r\n0xFE");
#endif /* __DEBUG_AHT20_ATY */
            return 0xFE;
        }
    }
 
    return 0;
}