hal库adc单通道采集电压

好的，您可以参考以下代码实现HAL库ADC单通道采集电压：

首先，需要初始化ADC模块：

/* 初始化ADC */
ADC_HandleTypeDef hadc1;
ADC_ChannelConfTypeDef sConfig = {0};

/* 配置ADC参数 */
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.ScanConvMode = DISABLE;
hadc1.Init.ContinuousConvMode = ENABLE;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.NbrOfDiscConversion = 0;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.NbrOfConversion = 1;
hadc1.Init.DMAContinuousRequests = DISABLE;
hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
  Error_Handler();
}

/* 配置ADC通道 */
sConfig.Channel = ADC_CHANNEL_0;
sConfig.Rank = 1;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.SamplingTime = ADC_SAMPLETIME_480CYCLES;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
  Error_Handler();
}

然后，可以通过以下代码启动ADC采集：

/* 启动ADC采集 */
if (HAL_ADC_Start(&hadc1) != HAL_OK)
{
  Error_Handler();
}

/* 等待ADC采集完成 */
if (HAL_ADC_PollForConversion(&hadc1, 100) != HAL_OK)
{
  Error_Handler();
}

/* 读取ADC采样值 */
uint16_t adcValue = HAL_ADC_GetValue(&hadc1);

最后，可以通过以下公式将ADC采样值转换为电压值：

float voltage = adcValue * 3.3 / 4096;