STM32G070RBT6-MCU温度测量（ADC）方法详解

1、借助STM32CubeMX生成系统及外设相关初始化代码。




在以上配置后就可以生成相关初始化代码了。

/* ADC1 init function */
void MX_ADC1_Init(void)
{

  /* USER CODE BEGIN ADC1_Init 0 */

  /* USER CODE END ADC1_Init 0 */

  ADC_ChannelConfTypeDef sConfig = {0};

  /* USER CODE BEGIN ADC1_Init 1 */

  /* USER CODE END ADC1_Init 1 */

  /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
  */
  hadc1.Instance = ADC1;
  hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
  hadc1.Init.Resolution = ADC_RESOLUTION_12B;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
  hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  hadc1.Init.LowPowerAutoWait = DISABLE;
  hadc1.Init.LowPowerAutoPowerOff = DISABLE;
  hadc1.Init.ContinuousConvMode = ENABLE;
  hadc1.Init.NbrOfConversion = 1;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc1.Init.DMAContinuousRequests = DISABLE;
  hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
  hadc1.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_160CYCLES_5;
  hadc1.Init.SamplingTimeCommon2 = ADC_SAMPLETIME_160CYCLES_5;
  hadc1.Init.OversamplingMode = DISABLE;
  hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_1;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN ADC1_Init 2 */

  /* USER CODE END ADC1_Init 2 */

}
void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{

  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspInit 0 */

  /* USER CODE END ADC1_MspInit 0 */

  /** Initializes the peripherals clocks
  */
    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
    PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_SYSCLK;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    {
      Error_Handler();
    }

    /* ADC1 clock enable */
    __HAL_RCC_ADC_CLK_ENABLE();
  /* USER CODE BEGIN ADC1_MspInit 1 */

  /* USER CODE END ADC1_MspInit 1 */
  }
}

void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{

  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspDeInit 0 */

  /* USER CODE END ADC1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_ADC_CLK_DISABLE();
  /* USER CODE BEGIN ADC1_MspDeInit 1 */

  /* USER CODE END ADC1_MspDeInit 1 */
  }
}

//CPU 温度检测功能代码
float  TempDectect()
{
    float  Tmep1 = 0.284;
    uint32_t aDsUM = 0;
    uint32_t AdcVol = 0.0;
    int16_t  aDCvALUE = 0;
    HAL_ADC_Start(&hadc1);	//启动ADC转换
    HAL_ADC_PollForConversion(&hadc1,10);	//等待转换完成，10ms表示超时时间
    aDCvALUE = HAL_ADC_GetValue(&hadc1);	//读取ADC转换数据（12位数据）

    /*温度公式与参数释义：
    TMP = (TS_CAL2_TEMP - TS_CAL1_TEMP)/(TS_CAL2 - TS_CAL1) * (TS_DATA - TS_CAL1) + TS_CAL1_TEMP;
    TS_CAL2_TEMP:130°
    TS_CAL1_TEMP:30°
    TS_CAL2:0x56A(根据手册得知值存储在flash地址0x0x1FFF75CA - 0x1FFF75CB)需要读出来
    TS_CAL1:0x40A(根据手册得知值存储在flash地址0x0x1FFF75A8 - 0x1FFF75A9)需要读出来
    TS_DATA:是由 ADC 转换得到的实际温度传感器输出值
    */
    //Tmep1 = (130-30)/(1386-1034);   //计算一直为0，所以将其设为恒定值

    Tmep = (Tmep1 * (aDCvALUE - 1034)) + 30;

    return Tmep;
}