【STEVAL-STWINKT1B测评】使用Micro SD卡记录传感器数据

只看该作者 · 2024-8-12 23:12

1、STWINKT1B上有一个SD卡接口可用于电池供电的时候将数据方便的保存到存储卡里面，这里我们就可以把STWINKT1B方便的用于各种场景下数据记录。

TF卡数据接口如下

TF卡使用SDIO进口进行通信，能够进行高速的数据读写。文件系统使用开源的FATFS。

void DATALOG_SD_Init(void)

{

  BSP_SD_Detect_Init();      

  if(FATFS_LinkDriver(&SD_Driver, SDPath) == 0)

  {

    /* Register the file system object to the FatFs module */

    if(f_mount(&SDFatFs, (TCHAR const*)SDPath, 0) != FR_OK)

    {

      /* FatFs Initialization Error */

    }

  }

}

再对TF卡初始化完成之后，创建一个csv文件用于存储各个传感器的数据

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uint8_t DATALOG_SD_Log_Enable(void)

{

  static uint16_t sdcard_file_counter = 0;

  char header[] = "T [ms],AccX [mg],AccY [mg],AccZ [mg],GyroX [mdps],GyroY [mdps],GyroZ [mdps],MagX [mgauss],MagY [mgauss],MagZ [mgauss],P [mB],T [degrees],H [%]\r\n";

  uint32_t byteswritten; /* written byte count */

  char file_name[30] = {0};

 

  sprintf(file_name, "%s%.3d%s", "ind", sdcard_file_counter, ".csv");  

  

  sdcard_file_counter++;



  HAL_Delay(100);



  if(f_open(&MyFile, (char const*)file_name, FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)

  {

    sdcard_file_counter--;

    return 0;

  }

  

  if(f_write(&MyFile, (const void*)&header, sizeof(header)-1, (void *)&byteswritten) != FR_OK)

  {

    return 0;

  }

  

  return 1;

  

}

然后是对各个传感器进行数据读取

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int32_t getSensorsData( T_SensorsData *mptr)

{

  int32_t ret = BSP_ERROR_NONE;

  mptr->ms_counter = HAL_GetTick();

  

#ifdef USE_IIS2DH

  

  if ( BSP_MOTION_SENSOR_GetAxes( IIS2DH_0, MOTION_ACCELERO, &mptr->acc ) == BSP_ERROR_COMPONENT_FAILURE )

  {

    mptr->acc.x = 0;

    mptr->acc.y = 0;

    mptr->acc.z = 0;

    ret = BSP_ERROR_COMPONENT_FAILURE;

  }

#elif USE_ISM330DHCX

  

  if ( BSP_MOTION_SENSOR_GetAxes( ISM330DHCX_0, MOTION_ACCELERO, &mptr->acc ) == BSP_ERROR_COMPONENT_FAILURE )

  {

    mptr->acc.x = 0;

    mptr->acc.y = 0;

    mptr->acc.z = 0;

    ret = BSP_ERROR_COMPONENT_FAILURE;

  }

  

#endif



  if ( BSP_MOTION_SENSOR_GetAxes(ISM330DHCX_0, MOTION_GYRO, &mptr->gyro ) == BSP_ERROR_COMPONENT_FAILURE )

  {

    mptr->gyro.x = 0;

    mptr->gyro.y = 0;

    mptr->gyro.z = 0;

    ret = BSP_ERROR_COMPONENT_FAILURE;

  }

  

  if ( BSP_MOTION_SENSOR_GetAxes(IIS2MDC_0, MOTION_MAGNETO, &mptr->mag ) == BSP_ERROR_COMPONENT_FAILURE )

  {

    mptr->mag.x = 0;

    mptr->mag.y = 0;

    mptr->mag.z = 0;

    ret = BSP_ERROR_COMPONENT_FAILURE;

  }

  

  if ( BSP_ENV_SENSOR_GetValue(LPS22HH_0, ENV_PRESSURE, &mptr->pressure ) == BSP_ERROR_COMPONENT_FAILURE )

  {

    mptr->pressure = 0.0f;

    ret = BSP_ERROR_COMPONENT_FAILURE;

  }

  

  if ( BSP_ENV_SENSOR_GetValue(STTS751_0, ENV_TEMPERATURE, &mptr->temperature ) == BSP_ERROR_COMPONENT_FAILURE )

  {

    mptr->temperature = 0.0f;

    ret = BSP_ERROR_COMPONENT_FAILURE;

  }

  

  if ( BSP_ENV_SENSOR_GetValue(HTS221_0, ENV_HUMIDITY, &mptr->humidity ) == BSP_ERROR_COMPONENT_FAILURE )//ENV_HUMIDITY &mptr->humidity

  {

    mptr->humidity = 0.0f;

    ret = BSP_ERROR_COMPONENT_FAILURE;

  }

  

  return ret;

}

2秒更新写一次数据

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DATALOG_SD_Init();   

  MX_X_CUBE_MEMS1_Init();

  DATALOG_SD_Log_Enable();

  while(1)

  {

      HAL_Delay(2000);

      getSensorsData(&my_mptr);

      writeSensorsData();

      cnt++;

      if(cnt  == 90)

      {

        DATALOG_SD_Log_Disable();

        while(1);

      }     

  }