STM32双重ADC快速交叉模式采集一个规则组通道数据，采用定时器触发主ADC，软件触发从ADC，库函数编写

下面是采用定时器触发主ADC，软件触发从ADC的库函数编写代码：

#include "stm32f10x.h"

/* 定义ADC采样时间 */
#define ADC_SAMPLE_TIME ADC_SampleTime_239Cycles5

/* 定义ADC转换结果存储数组 */
__IO uint16_t ADC_ConvertedValue[2];

int main(void)
{
  /* 定义GPIO初始化结构体 */
  GPIO_InitTypeDef GPIO_InitStructure;

  /* 定义NVIC初始化结构体 */
  NVIC_InitTypeDef NVIC_InitStructure;

  /* 定义定时器初始化结构体 */
  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

  /* 定义ADC初始化结构体 */
  ADC_InitTypeDef ADC_InitStructure;

  /* 定义DMA初始化结构体 */
  DMA_InitTypeDef DMA_InitStructure;

  /* 使能GPIOA和DMA1时钟 */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

  /* 配置GPIOA.0和GPIOA.1为模拟输入 */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* 使能DMA1通道1时钟 */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

  /* 配置DMA1通道1 */
  DMA_DeInit(DMA1_Channel1);
  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t) &ADC1->DR;
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t) &ADC_ConvertedValue[1];
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_BufferSize = 1;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  DMA_Init(DMA1_Channel1, &DMA_InitStructure);

  /* 配置定时器2 */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
  TIM_TimeBaseStructure.TIM_Period = 35999; // 定时器周期为36000
  TIM_TimeBaseStructure.TIM_Prescaler = 0;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

  /* 配置NVIC中断优先级 */
  NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* 配置ADC1 */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
  ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_TRGO;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);

  /* 配置ADC1规则通道0 */
  ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SAMPLE_TIME);

  /* 配置ADC2 */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE);
  ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_CC2;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC2, &ADC_InitStructure);

  /* 配置ADC2规则通道1 */
  ADC_RegularChannelConfig(ADC2, ADC_Channel_1, 1, ADC_SAMPLE_TIME);

  /* 使能DMA1通道1中断 */
  DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);

  /* 使能DMA1通道1 */
  DMA_Cmd(DMA1_Channel1, ENABLE);

  /* 启动定时器2 */
  TIM_Cmd(TIM2, ENABLE);

  /* 启动ADC1 */
  ADC_Cmd(ADC1, ENABLE);

  /* 启动ADC2 */
  ADC_Cmd(ADC2, ENABLE);

  while (1)
  {
    /* 等待DMA1通道1中断 */
    while (DMA_GetITStatus(DMA1_IT_TC1) == RESET);

    /* 清除DMA1通道1中断标志位 */
    DMA_ClearITPendingBit(DMA1_IT_TC1);

    /* 交换ADC转换结果存储数组指针 */
    if (ADC_ConvertedValue[0] > ADC_ConvertedValue[1])
    {
      ADC_ConvertedValue[0] = ADC_ConvertedValue[1];
    }
  }
}

/* DMA1通道1中断服务函数 */
void DMA1_Channel1_IRQHandler(void)
{
  /* 清除DMA1通道1中断标志位 */
  DMA_ClearITPendingBit(DMA1_IT_TC1);
  /* 触发ADC2转换 */
  ADC_SoftwareStartConv(ADC2);
}

代码中使用了定时器2作为主ADC的触发信号，每次定时器溢出后触发一次主ADC转换；同时，使用软件触发从ADC的转换，当主ADC转换完成后，通过DMA将转换结果存储到数组中，并触发从ADC的转换。在主函数中，通过比较两个通道的转换结果，选择较小的值作为最终结果。需要注意的是，为了保证双重ADC的同步采样，需要将两个ADC的配置参数设置为相同。