写一个基于M4 stm32f103的简易示波器的代码

以下是一个基于M4 stm32f103的简易示波器的代码，使用LCD显示屏和ADC模块收集来自示波器探头的信号，并将其显示在屏幕上：

#include "stm32f10x.h"
#include "lcd.h"

#define ADC1_DR_Address ((u32)0x4001244C)

__IO uint16_t ADC_ConvertedValue;

void RCC_Configuration(void)
{
  /* Enable ADC1 and GPIOA clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA, ENABLE);
}

void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Configure ADC Channel0 as analog input */
  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;

  /* ADC1 configuration */
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channel0 configuration */
  ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_55Cycles5);

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

  /* Enable ADC1 reset calibaration register */
  ADC_ResetCalibration(ADC1);
  /* Check the end of ADC1 reset calibration register */
  while (ADC_GetResetCalibrationStatus(ADC1));

  /* Start ADC1 calibaration */
  ADC_StartCalibration(ADC1);
  /* Check the end of ADC1 calibration */
  while (ADC_GetCalibrationStatus(ADC1));
}

void TIM_Configuration(void)
{
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  TIM_OCInitTypeDef  TIM_OCInitStructure;

  /* TIM2 clock enable */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

  /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = 59999;
  TIM_TimeBaseStructure.TIM_Prescaler = 71;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

  /* PWM1 Mode configuration: Channel1 */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 29999;
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OC1Init(TIM2, &TIM_OCInitStructure);

  TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Enable);

  /* TIM2 enable counter */
  TIM_Cmd(TIM2, ENABLE);
}

void ADC1_IRQHandler(void)
{
  if (ADC_GetITStatus(ADC1, ADC_IT_EOC) != RESET)
  {
    /* Get converted value */
    ADC_ConvertedValue = ADC_GetConversionValue(ADC1);
    ADC_ClearITPendingBit(ADC1, ADC_IT_EOC);
  }
}

int main(void)
{
  RCC_Configuration();
  GPIO_Configuration();
  ADC_Configuration();
  TIM_Configuration();
  LCD_Init();

  while(1)
  {
    /* Start ADC1 Software Conversion */
    ADC_SoftwareStartConvCmd(ADC1, ENABLE);

    /* Wait until end of conversion */
    while (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);

    /* Display the value on LCD */
    LCD_Clear();
    LCD_WriteString("Voltage: ");
    LCD_WriteInt(ADC_ConvertedValue * 3300 / 4096);
    LCD_WriteString("mV");
    delay_ms(100);
  }
}

请注意，这只是一个简单的代码示例，可能需要进行修改以适应您的实际应用程序。此外，还需要正确连接LCD显示屏和示波器探头。