stm32f103 adc 查询方式 基于HAL库

下面是使用HAL库进行STM32F103 ADC查询的步骤：

1. 初始化ADC：

ADC_HandleTypeDef hadc;

hadc.Instance = ADC1;
hadc.Init.ScanConvMode = DISABLE;
hadc.Init.ContinuousConvMode = DISABLE;
hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc.Init.NbrOfConversion = 1;
HAL_ADC_Init(&hadc);

2. 配置ADC通道：

ADC_ChannelConfTypeDef sConfig;

sConfig.Channel = ADC_CHANNEL_0;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
HAL_ADC_ConfigChannel(&hadc, &sConfig);

3. 启动ADC转换：

HAL_ADC_Start(&hadc);

4. 等待转换完成：

HAL_ADC_PollForConversion(&hadc, 100);

5. 读取转换值：

uint16_t adc_value = HAL_ADC_GetValue(&hadc);

完整代码示例：

ADC_HandleTypeDef hadc;
ADC_ChannelConfTypeDef sConfig;

void MX_ADC1_Init(void)
{
  hadc.Instance = ADC1;
  hadc.Init.ScanConvMode = DISABLE;
  hadc.Init.ContinuousConvMode = DISABLE;
  hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc.Init.NbrOfConversion = 1;
  HAL_ADC_Init(&hadc);

  sConfig.Channel = ADC_CHANNEL_0;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);
}

uint16_t adc_read(void)
{
  uint16_t adc_value = 0;
  HAL_ADC_Start(&hadc);
  HAL_ADC_PollForConversion(&hadc, 100);
  adc_value = HAL_ADC_GetValue(&hadc);
  return adc_value;
}