基于stm32的信号发生器和示波器的代码

对于基于STM32的信号发生器和示波器的代码，以下是一个简单的示例：

信号发生器代码：

#include "stm32f4xx.h"

#define DAC_CHANNEL    DAC_Channel_1
#define DAC_DHR12R1_ADDRESS 0x40007408

void DAC_Config(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    DAC_InitTypeDef DAC_InitStructure;

    // 使能GPIOA时钟
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

    // 配置PA4为模拟输出
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // 使能DAC时钟
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);

    // 配置DAC通道1
    DAC_InitStructure.DAC_Trigger = DAC_Trigger_None;
    DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
    DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
    DAC_Init(DAC_Channel_1, &DAC_InitStructure);

    // 使能DAC
    DAC_Cmd(DAC_Channel_1, ENABLE);
}

void DAC_SetVoltage(uint16_t value)
{
    // 设置DAC输出电压值
    *(volatile uint32_t*)DAC_DHR12R1_ADDRESS = value;
}

int main(void)
{
    // 初始化系统时钟等
    SystemInit();

    // 配置DAC
    DAC_Config();

    while (1)
    {
        // 此处添加信号生成代码
        // 例如：产生正弦波信号
        for (uint16_t i = 0; i < 360; i++)
        {
            uint16_t value = (uint16_t)((sin(i * 3.14159 / 180) + 1) * 2048);
            DAC_SetVoltage(value);
            for (volatile uint32_t delay = 0; delay < 10000; delay++);
        }
    }
}

示波器代码：

#include "stm32f4xx.h"

#define ADC_CHANNEL    ADC_Channel_0
#define ADC_DR_ADDRESS ((uint32_t)0x4001204C)

void ADC_Config(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    ADC_InitTypeDef ADC_InitStructure;
    DMA_InitTypeDef DMA_InitStructure;

    // 使能GPIOA时钟
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

    // 配置PA0为模拟输入
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // 使能DMA2时钟
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);

    // 配置DMA2 Stream0
    DMA_InitStructure.DMA_Channel = DMA_Channel_0;
    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC_DR_ADDRESS;
    DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADC_Value;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
    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_FIFOMode = DMA_FIFOMode_Disable;
    DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
    DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
    DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
    DMA_Init(DMA2_Stream0, &DMA_InitStructure);

    // 使能DMA2 Stream0
    DMA_Cmd(DMA2_Stream0, ENABLE);

    // 使能DMA请求
    ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);

    // 使能GPIOC时钟
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);

    // 配置PC0为模拟输入
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOC, &GPIO_InitStructure);

    // 使能ADC时钟
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

    // 配置ADC
    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_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfConversion = 1;
    ADC_Init(ADC1, &ADC_InitStructure);

    // 配置ADC通道0
    ADC_RegularChannelConfig(ADC1, ADC_CHANNEL, 1, ADC_SampleTime_3Cycles);

    // 使能ADC DMA
    ADC_DMACmd(ADC1, ENABLE);

    // 使能ADC
    ADC_Cmd(ADC1, ENABLE);

    // 启动ADC转换
    ADC_SoftwareStartConv(ADC1);
}

int main(void)
{
    // 初始化系统时钟等
    SystemInit();

    // 配置ADC
    ADC_Config();

    while (1)
    {
        // 此处添加示波器代码
        // 例如：读取ADC采样值并处理
        uint16_t adcValue = ADC_Value;
        // 处理adcValue的值，例如显示到LCD等
    }
}

这只是一个简单的示例代码，你可以根据自己的需求进行修改和扩展。