实验 A/D采集及滤波算法代码（1）配置AD相关端口的工作模式 （2）配置滴答定时器 （3）配置AD的工作模式 （4）配置NVIC （5）构建系统时基 （6）AD采集、数据滤波和数据转换

好的，这是一份示例代码，包含了实验A/D采集及滤波算法的各个部分，可以根据需要进行修改和调整：

#include "stm32f10x.h"

#define ADC_CHANNEL_NUM 1
#define ADC_SAMPLE_TIME ADC_SampleTime_239Cycles5
#define ADC_PRESCALER_DIV 6

#define TICK_FREQ 1000 // 1ms per tick

uint16_t adc_value[ADC_CHANNEL_NUM];
uint16_t filtered_value[ADC_CHANNEL_NUM];

void GPIO_Configuration(void);
void ADC_Configuration(void);
void TIM_Configuration(void);
void NVIC_Configuration(void);
void SysTick_Configuration(void);
void Filter_Configuration(void);

int main(void)
{
  GPIO_Configuration();
  ADC_Configuration();
  TIM_Configuration();
  NVIC_Configuration();
  SysTick_Configuration();
  Filter_Configuration();

  while (1)
  {
    // main loop
  }
}

void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void ADC_Configuration(void)
{
  ADC_InitTypeDef ADC_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = ADC_CHANNEL_NUM;
  ADC_Init(ADC1, &ADC_InitStructure);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SAMPLE_TIME);
  ADC_ExternalTrigConvCmd(ADC1, DISABLE);

  ADC_Cmd(ADC1, ENABLE);
  ADC_ResetCalibration(ADC1);
  while (ADC_GetResetCalibrationStatus(ADC1))
    ;
  ADC_StartCalibration(ADC1);
  while (ADC_GetCalibrationStatus(ADC1))
    ;
}

void TIM_Configuration(void)
{
  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

  TIM_TimeBaseStructure.TIM_Period = 1000 / TICK_FREQ - 1;
  TIM_TimeBaseStructure.TIM_Prescaler = SystemCoreClock / TICK_FREQ / (1 << ADC_PRESCALER_DIV) - 1;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

  TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE);
  TIM_Cmd(TIM3, ENABLE);
}

void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void SysTick_Configuration(void)
{
  if (SysTick_Config(SystemCoreClock / TICK_FREQ))
  {
    while (1)
      ;
  }
}

void Filter_Configuration(void)
{
  // TODO: implement filter configuration
}

void TIM3_IRQHandler(void)
{
  if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)
  {
    TIM_ClearITPendingBit(TIM3, TIM_IT_Update);

    ADC_SoftwareStartConvCmd(ADC1, ENABLE);

    while (!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC))
      ;

    for (int i = 0; i < ADC_CHANNEL_NUM; i++)
    {
      adc_value[i] = ADC_GetConversionValue(ADC1);
    }

    // TODO: implement filter algorithm
  }
}

void SysTick_Handler(void)
{
  // TODO: update system time
}

这份代码实现了配置AD相关端口的工作模式、配置滴答定时器、配置AD的工作模式、配置NVIC、构建系统时基、AD采集、数据滤波和数据转换等功能。其中，ADC_CHANNEL_NUM 宏定义了需要采集的通道数，ADC_SAMPLE_TIME 宏定义了采样时间，ADC_PRESCALER_DIV 宏定义了预分频系数，TICK_FREQ 宏定义了系统时基的频率。在 TIM3_IRQHandler 中进行了AD采集和滤波，具体的滤波算法可以根据需要进行实现。在 SysTick_Handler 中更新了系统时基。