[活动专区] 【杰发科技AC7802x测评】11.硬件IIC读取HS3003温湿度传感器数据

/*

@hehung

2023-6-30

email: 1398660197@qq.com

wechat: hehung95

reproduced and please indicate the source @hehung

*/





#include "app_hs3003.h"

#include "app_hw_i2c.h"







#define HS300x_I2C_SLAVE_ADDR_7BIT           (0x44U)



#define HS300X_DATA_VALID                    (0x00U)

#define HS300X_DATA_STALE                    (0x01U)

#define HS300X_STATUS_MASK                   (0xC0000000U)

#define HS300X_STATUS_POS                    (30U)



#define HS300X_DATA_MASK                     (0x3FFFFFFCU)

#define HS300X_HUMI_DATA_MASK                (0x3FFF0000U)

#define HS300X_HUMI_DATA_POS                 (16U)

#define HS300X_TEMP_DATA_MASK                (0x0000FFFCU)

#define HS300X_TEMP_DATA_POS                 (2U)



/* calculation formula, 2^14 - 1 */

#define HS300X_DATA_FACTOR                   (16383U)







static uint8_t Hs300x_DataConvert(uint32_t read_data, s_Hs300xDataType *cal_result);







static uint8_t Hs300x_DataConvert(uint32_t read_data, s_Hs300xDataType *cal_result)

{

    uint32_t humi_data;

    uint32_t temp_data;



    if (((read_data & HS300X_STATUS_MASK) >> HS300X_STATUS_POS) == HS300X_DATA_VALID)

    {

        // Data is valid

        humi_data = (read_data & HS300X_HUMI_DATA_MASK) >> HS300X_HUMI_DATA_POS;

        temp_data = (read_data & HS300X_TEMP_DATA_MASK) >> HS300X_TEMP_DATA_POS;



        // Calculate the humidity: humi_data/(2^14-1) * 100

        cal_result->humi = (double)humi_data/(double)(HS300X_DATA_FACTOR) * 100.0;

        // Calculate the temperature: temp_data/(2^14-1) * 165 - 40

        cal_result->temp = (double)temp_data/(double)(HS300X_DATA_FACTOR) * 165.0 - 40;

#ifdef HS300X_DEBUG

        printf("humidity:%f, temperature:%f\n", cal_result->humi, cal_result->temp);

#endif

    

        return 1;

    }

    else

    {

        return 0;

    }

}



void Hs300x_Init(void)

{

    // Do not settings, keep default settings in sensor device

}



void Hs300x_StartSample(void)

{

    uint8_t data = 0;



    // Only send the address to start HS300X convert

    I2C_MasterTransmitPoll(I2C0, HS300x_I2C_SLAVE_ADDR_7BIT, &data, 0, ENABLE);

}



s_Hs300xDataType Hs300x_ReadData(void)

{

    uint8_t data[4];  // one address + 4bytes data

    uint32_t data_u32;

    s_Hs300xDataType humi_temp;



//  Read measurement from sensor HS300X

    I2C_MasterReceivePoll(I2C0, HS300x_I2C_SLAVE_ADDR_7BIT, data, 4);

    // Convert the data to 32bit

    data_u32 = (uint32_t)((data[0] << 24U) | 

                          (data[1] << 16U) | 

                          (data[2] << 8U) | 

                          (data[3]));

    // Read the temperature and hunidity

    (void)Hs300x_DataConvert(data_u32, &humi_temp);



//#ifdef HS300X_DEBUG

    printf ("HS300X origin data1:%x%x%x%x\r\n", data[0],data[1],data[2],data[3]);

    // printf("HS300X origin data2:%x\n", data_u32);

    printf ("Temp:%f--Humi:%f\r\n", humi_temp.temp, humi_temp.humi);

//#endif



    return humi_temp;

}

/*

@hehung

2023-6-30

email: 1398660197@qq.com

wechat: hehung95

reproduced and please indicate the source @hehung

*/



#ifndef APP_HS3003_H__

#define APP_HS3003_H__







typedef struct 

{

    double humi;

    double temp;

} s_Hs300xDataType;



extern void Hs300x_Init(void);

extern s_Hs300xDataType Hs300x_ReadData(void);

extern void Hs300x_StartSample(void);





#endif

        Hs300x_StartSample();

        mdelay(40);

        Hs300x_ReadData();

        mdelay(1000);