STM32F103 定时器+ADC+DMA中断+双缓存+实现数据采集

功能

TIM1_CC1触发ADC1进行采样，采样使用DMA进行数据传输，DMA启用半满和全满中断，在中断中进行数据保存到其他Buff，方便进行处理。

完整工程下载：http://download.csdn.net/detail/u014124220/9451323

环境

硬件平台：STM32F103ZE
开发环境：MDK 4.70
操作系统：Windows 10

代码

ADCongif.h

#ifndef __ADCONFIG_H_#define __ADCONFIG_H_void ADC_Configuration(void);void ADC1_Init(void);void ADC1_DMA1_Init(void);void ADC1_ExternalTrig_T1_CC1_Init(void);void ADC1_GPIO_Config(void);#endif

ADConfig.c

/**************************************************  *  文件名: ADConfig.c file *  描述：  ADC配置文件 *------------------------------------------------ * 作者: xbotao * 创建时间：2016-03-02 * 最后修改：2016-03-02 *  * Copyright (c) 2016 Xbotao *  *************************************************/#include <stdio.h>#include "string.h"#include "stm32f10x.h"#include "ADConfig.h"#define ADC_BUFF_LEN    200#define ADC1_DR_Address    ((uint32_t)0x4001244C)uint16_t ADC_ConvertedValue[ADC_BUFF_LEN];uint16_t WriteBuff[ADC_BUFF_LEN];void ADC_Configuration(void){    ADC1_GPIO_Config();    ADC1_ExternalTrig_T1_CC1_Init();    ADC1_DMA1_Init();    ADC1_Init();}void ADC1_GPIO_Config(void){    GPIO_InitTypeDef GPIO_InitStructure;    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC, ENABLE);    /* Configure TIM1_CH1 (PA8) as alternate function push-pull */    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;    GPIO_Init(GPIOA, &GPIO_InitStructure);    /* Configure PC.01 and PC.04 (ADC Channel11 and Channel14) as analog input */    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_4;    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;    GPIO_Init(GPIOC, &GPIO_InitStructure);}void ADC1_Init(void){    ADC_InitTypeDef ADC_InitStructure;    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);    /* ADC1 configuration ------------------------------------------------------*/    ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;    ADC_InitStructure.ADC_ScanConvMode = DISABLE;    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;    ADC_InitStructure.ADC_NbrOfChannel = 1;    ADC_Init(ADC1, &ADC_InitStructure);    ADC_TempSensorVrefintCmd(ENABLE);    ADC_RegularChannelConfig(ADC1, ADC_Channel_16, 1, ADC_SampleTime_13Cycles5);    ADC_Cmd(ADC1, ENABLE);    ADC_ExternalTrigConvCmd(ADC1, ENABLE);    ADC_DMACmd(ADC1, ENABLE);    ADC_ResetCalibration(ADC1);    while(ADC_GetResetCalibrationStatus(ADC1));    ADC_StartCalibration(ADC1);    while(ADC_GetCalibrationStatus(ADC1));  }void ADC1_DMA1_Init(void){    DMA_InitTypeDef DMA_InitStructure;    NVIC_InitTypeDef NVIC_InitStructure;    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);    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);    /* DMA1 Channel1 Configuration ----------------------------------------------*/    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 = ADC_BUFF_LEN;    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_ITConfig(DMA1_Channel1, DMA_IT_TC | DMA_IT_HT, ENABLE);    /* Enable DMA1 channel1 */    DMA_Cmd(DMA1_Channel1, ENABLE);}void ADC1_ExternalTrig_T1_CC1_Init(void){    TIM_TimeBaseInitTypeDef   TIM_TimeBaseStructure;    TIM_OCInitTypeDef         TIM_OCInitStructure;    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);    /* Time Base configuration */    TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);     TIM_TimeBaseStructure.TIM_Period = 1000-1;              TIM_TimeBaseStructure.TIM_Prescaler = 72-1;           TIM_TimeBaseStructure.TIM_ClockDivision = 0x00;        TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;      TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);    /* TIM1 channel1 configuration in PWM mode */    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;     TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;                    TIM_OCInitStructure.TIM_Pulse = 500;     TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;             TIM_OC1Init(TIM1, &TIM_OCInitStructure);    TIM_CtrlPWMOutputs(TIM1, ENABLE);    TIM_Cmd(TIM1, DISABLE);}void ADC1_DMA1_IT_Hander(void){    if(DMA_GetFlagStatus(DMA1_FLAG_HT1))    {        DMA_ClearITPendingBit(DMA_IT_HT);        memcpy(WriteBuff, ADC_ConvertedValue, ADC_BUFF_LEN*sizeof(uint16_t)/2);    }    if(DMA_GetFlagStatus(DMA1_FLAG_TC1))    {        DMA_ClearITPendingBit(DMA1_FLAG_TC1);        memcpy(WriteBuff+ADC_BUFF_LEN/2, ADC_ConvertedValue+ADC_BUFF_LEN/2, ADC_BUFF_LEN*sizeof(uint16_t)/2);//此处可以增加标志位    }}

main.c

#include "stm32f10x.h"#include "ADConfig.h"int main(void){    ADC_Configuration();    TIM_Cmd(TIM1, ENABLE);    while (1)    {    }}