stm32的AD转换设置预制数组的代码

以下是基于STM32 HAL库的AD转换设置预制数组的代码示例：

#define ADC_CHANNEL_NUM 2
#define ADC_BUFFER_SIZE 10

ADC_HandleTypeDef hadc1;
uint16_t ad_buffer[ADC_CHANNEL_NUM][ADC_BUFFER_SIZE];

void adc_init(void)
{
  ADC_ChannelConfTypeDef sConfig = {0};

  hadc1.Instance = ADC1;
  hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
  hadc1.Init.Resolution = ADC_RESOLUTION_12B;
  hadc1.Init.ScanConvMode = ENABLE;
  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 = ADC_CHANNEL_NUM;
  hadc1.Init.DMAContinuousRequests = DISABLE;
  hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  HAL_ADC_Init(&hadc1);

  sConfig.SamplingTime = ADC_SAMPLETIME_480CYCLES;
  sConfig.Rank = 1;
  sConfig.Offset = 0;

  sConfig.Channel = ADC_CHANNEL_0;
  HAL_ADC_ConfigChannel(&hadc1, &sConfig);

  sConfig.Channel = ADC_CHANNEL_1;
  HAL_ADC_ConfigChannel(&hadc1, &sConfig);

  HAL_ADC_Start_DMA(&hadc1, (uint32_t *)ad_buffer, ADC_CHANNEL_NUM * ADC_BUFFER_SIZE);
}

上述代码中，我们预先定义了AD转换的通道数和每个通道的采样数组大小，并将这些数据定义为全局变量。在`adc_init()`函数中，我们使用了HAL库提供的函数进行ADC配置和启动DMA传输。在ADC转换完成后，我们的采样数据将存储在`ad_buffer`数组中。