STM32双重ADC快速交叉模式采集一个通道数据，库函数

在STM32的库函数中，使用双重ADC快速交叉模式采集一个通道数据的代码如下：

#include "stm32f4xx.h"

#define ADC_CHANNEL       ADC_Channel_0
#define ADC_SAMPLE_TIME   ADC_SampleTime_15Cycles

void ADC_Config(void)
{
  ADC_CommonInitTypeDef ADC_CommonInitStructure;
  ADC_InitTypeDef ADC_InitStructure;

  /* Enable ADC1 and ADC2 clocks */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_ADC2, ENABLE);

  /* Configure common settings for both ADCs */
  ADC_CommonInitStructure.ADC_Mode = ADC_DualMode_RegSimult;
  ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
  ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
  ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
  ADC_CommonInit(&ADC_CommonInitStructure);

  /* Configure ADC1 */
  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfConversion = 1;
  ADC_Init(ADC1, &ADC_InitStructure);

  /* Configure ADC2 */
  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfConversion = 1;
  ADC_Init(ADC2, &ADC_InitStructure);

  /* Configure ADC channel */
  ADC_RegularChannelConfig(ADC1, ADC_CHANNEL, 1, ADC_SAMPLE_TIME);
  ADC_RegularChannelConfig(ADC2, ADC_CHANNEL, 1, ADC_SAMPLE_TIME);

  /* Enable ADC1 and ADC2 */
  ADC_Cmd(ADC1, ENABLE);
  ADC_Cmd(ADC2, ENABLE);

  /* Wait for ADCs to be ready */
  while (!ADC_GetFlagStatus(ADC1, ADC_FLAG_RDY) || !ADC_GetFlagStatus(ADC2, ADC_FLAG_RDY));

  /* Start ADCs */
  ADC_StartConversion(ADC1);
  ADC_StartConversion(ADC2);
}

uint16_t ADC_Read(void)
{
  while (!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)); // Wait for conversion to complete
  return ADC_GetConversionValue(ADC1);
}

在上述代码中，首先需要配置双重ADC的通用设置，如模式、预分频、DMA访问模式等。然后分别配置ADC1和ADC2的分辨率、扫描转换模式、连续转换模式等参数。接着配置ADC channel，指定采集的通道和采样时间。最后使能ADC1和ADC2，等待ADCs准备好后启动转换，并在ADC_Read函数中获取ADC1的转换结果。值得注意的是，由于使用了双重ADC快速交叉模式，所以ADC2的转换结果可以忽略不计。