ADXL345 HAL库 ，设置量程 分辨率

如果您想使用HAL库来控制ADXL345的量程和分辨率，可以按照以下步骤进行操作：

1. 配置I2C总线，初始化ADXL345。

I2C_HandleTypeDef hi2c1;

#define ADXL345_ADDRESS 0x53
#define ADXL345_TO_READ 6

void ADXL345_Init(void)
{
  uint8_t data[2];

  // 配置I2C总线
  hi2c1.Instance = I2C1;
  hi2c1.Init.ClockSpeed = 100000;
  hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
  hi2c1.Init.OwnAddress1 = 0;
  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  hi2c1.Init.OwnAddress2 = 0;
  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;

  if (HAL_I2C_Init(&hi2c1) != HAL_OK)
  {
    Error_Handler();
  }

  // 初始化ADXL345
  data[0] = 0x2D;
  data[1] = 0x00;
  HAL_I2C_Master_Transmit(&hi2c1, ADXL345_ADDRESS, data, 2, 1000);

  data[0] = 0x2D;
  data[1] = 0x16;
  HAL_I2C_Master_Transmit(&hi2c1, ADXL345_ADDRESS, data, 2, 1000);

  data[0] = 0x2D;
  data[1] = 0x08;
  HAL_I2C_Master_Transmit(&hi2c1, ADXL345_ADDRESS, data, 2, 1000);
}

2. 设置ADXL345的量程和分辨率。

void ADXL345_SetRange(uint8_t range)
{
  uint8_t data[2];

  switch (range) {
    case 2:
      data[0] = 0x31;
      data[1] = 0x00;
      HAL_I2C_Master_Transmit(&hi2c1, ADXL345_ADDRESS, data, 2, 1000);
      break;
    case 4:
      data[0] = 0x31;
      data[1] = 0x01;
      HAL_I2C_Master_Transmit(&hi2c1, ADXL345_ADDRESS, data, 2, 1000);
      break;
    case 8:
      data[0] = 0x31;
      data[1] = 0x02;
      HAL_I2C_Master_Transmit(&hi2c1, ADXL345_ADDRESS, data, 2, 1000);
      break;
    case 16:
      data[0] = 0x31;
      data[1] = 0x03;
      HAL_I2C_Master_Transmit(&hi2c1, ADXL345_ADDRESS, data, 2, 1000);
      break;
    default:
      break;
  }
}

void ADXL345_SetResolution(uint8_t resolution)
{
  uint8_t data[2];

  if (resolution == 10) {
    data[0] = 0x31;
    data[1] = 0x08;
    HAL_I2C_Master_Transmit(&hi2c1, ADXL345_ADDRESS, data, 2, 1000);
  } else if (resolution == 12) {
    data[0] = 0x31;
    data[1] = 0x09;
    HAL_I2C_Master_Transmit(&hi2c1, ADXL345_ADDRESS, data, 2, 1000);
  }
}

在上述代码中，`ADXL345_SetRange`函数用于设置量程，可选范围为±2g、±4g、±8g和±16g；`ADXL345_SetResolution`函数用于设置分辨率，可选为10位或12位。

通过以上代码，您就可以使用HAL库来控制ADXL345的量程和分辨率了。