stm32f103zet6 adc采集方波三角波正弦波 标准库代码

以下是基于STM32F103ZET6芯片，使用标准库的ADC采集方波、三角波、正弦波的代码示例：

#include "stm32f10x.h"
#include <math.h>

#define ADC1_DR_Address    ((uint32_t)0x4001244C)

void RCC_Configuration(void);
void GPIO_Configuration(void);
void ADC_Configuration(void);
void DMA_Configuration(void);
void TIM_Configuration(void);
void DAC_Configuration(void);
void Waveform_Generation(void);

uint16_t ADC_ConvertedValue[3];

int main(void)
{
    RCC_Configuration();
    GPIO_Configuration();
    ADC_Configuration();
    DMA_Configuration();
    TIM_Configuration();
    DAC_Configuration();
    Waveform_Generation();

    while(1)
    {
    }
}

void RCC_Configuration(void)
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_ADC1 | RCC_APB2Periph_TIM1, ENABLE);
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
}

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void ADC_Configuration(void)
{
    ADC_InitTypeDef ADC_InitStructure;

    ADC_DeInit(ADC1);
    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 = 3;
    ADC_Init(ADC1, &ADC_InitStructure);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_55Cycles5);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_55Cycles5);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_55Cycles5);
    ADC_DMACmd(ADC1, ENABLE);
    ADC_Cmd(ADC1, ENABLE);
    ADC_ResetCalibration(ADC1);
    while(ADC_GetResetCalibrationStatus(ADC1));
    ADC_StartCalibration(ADC1);
    while(ADC_GetCalibrationStatus(ADC1));
}

void DMA_Configuration(void)
{
    DMA_InitTypeDef DMA_InitStructure;

    DMA_DeInit(DMA1_Channel1);
    DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
    DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_ConvertedValue;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
    DMA_InitStructure.DMA_BufferSize = 3;
    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    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);
    DMA_Cmd(DMA1_Channel1, ENABLE);
}

void TIM_Configuration(void)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

    TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
    TIM_TimeBaseStructure.TIM_Prescaler = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseStructure.TIM_Period = 719;
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
    TIM_Cmd(TIM1, ENABLE);
}

void DAC_Configuration(void)
{
    DAC_InitTypeDef DAC_InitStructure;

    DAC_InitStructure.DAC_Trigger = DAC_Trigger_T2_TRGO;
    DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
    DAC_Init(DAC_Channel_1, &DAC_InitStructure);
    DAC_Cmd(DAC_Channel_1, ENABLE);
}

void Waveform_Generation(void)
{
    uint16_t i;

    while(1)
    {
        for(i = 0; i < 360; i++)
        {
            DAC_SetChannel1Data(DAC_Align_12b_R, (uint16_t)(2048 + 2047 * sin(i * 3.1415926 / 180.0)));
            TIM_SetCompare1(TIM1, i);
            while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));
            DMA_ClearFlag(DMA1_FLAG_TC1);
        }
        for(i = 360; i > 0; i--)
        {
            DAC_SetChannel1Data(DAC_Align_12b_R, (uint16_t)(2048 + 2047 * sin(i * 3.1415926 / 180.0)));
            TIM_SetCompare1(TIM1, i);
            while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));
            DMA_ClearFlag(DMA1_FLAG_TC1);
        }
        for(i = 0; i < 360; i++)
        {
            DAC_SetChannel1Data(DAC_Align_12b_R, (uint16_t)(i * 12));
            TIM_SetCompare1(TIM1, i);
            while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));
            DMA_ClearFlag(DMA1_FLAG_TC1);
        }
        for(i = 360; i > 0; i--)
        {
            DAC_SetChannel1Data(DAC_Align_12b_R, (uint16_t)(i * 12));
            TIM_SetCompare1(TIM1, i);
            while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));
            DMA_ClearFlag(DMA1_FLAG_TC1);
        }
        for(i = 0; i < 360; i++)
        {
            DAC_SetChannel1Data(DAC_Align_12b_R, (uint16_t)(i * 11));
            TIM_SetCompare1(TIM1, i);
            while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));
            DMA_ClearFlag(DMA1_FLAG_TC1);
        }
        for(i = 360; i > 0; i--)
        {
            DAC_SetChannel1Data(DAC_Align_12b_R, (uint16_t)(i * 11));
            TIM_SetCompare1(TIM1, i);
            while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));
            DMA_ClearFlag(DMA1_FLAG_TC1);
        }
    }
}

这段代码使用了ADC采集模拟信号，并通过DMA传输到内存中，再由DAC输出到模拟输出端口。其中，TIM1用于生成PWM波形，通过改变TIM1的占空比来改变输出信号的幅值。同时，程序中还使用了sine函数来生成正弦波。需要注意的是，这里使用了DMA传输数据，因此需要在main函数的while(1)中加入一个空循环，以让程序不退出。