STM32數(shù)字示波器+詳細(xì)注釋+上位機(jī)C#程序+硬件PCB原理圖 - ELEOK

#include "stm32f10x.h"
#include "adc.h"
#include "oscilloscope.h"
#include "ucos_ii.h"
#include "tft_api.h"
/*-----------------------------------------
聲明變量
------------------------------------------*/
extern WaveType WaveInfo;
extern WaveMode WaveCtrl;
volatile u16 ADCConvertedValue[SAMPDEPTH];//AD轉(zhuǎn)換緩沖區(qū),占用RAM 0.8KB
/*-----------------------------------------
ADC1端口初始化
------------------------------------------*/
void ADC1_GPIO_Init(void)
{
GPIO_InitTypeDef IO_Init;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOC,ENABLE);
//C1模擬輸入
IO_Init.GPIO_Pin = GPIO_Pin_1;
IO_Init.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOC,&IO_Init);
}
/* #define ADC1_DR_Address ((unsigned int)0x40012400+0x4c) */
/* unsigned short int ADC1_DMA_Value; */
/*--------------------------------------------------
函數(shù)說明:配置ADC1完成AD采集,是本示波器最核心的部分.
配置方案:ADC1由TIM3提供的觸發(fā)事件進(jìn)行觸發(fā)AD轉(zhuǎn)換,控
制TIM3的速率就可以完成采樣率的改變.同時(shí)采
用DMA完成數(shù)據(jù)傳輸,注入通道1完成內(nèi)部溫度傳
感器AD采集.
--------------------------------------------------*/
void ADC1_Mode_Config(void)
{
//配置DMA
DMA_InitTypeDef DMA_csh;
ADC_InitTypeDef ADC_csh;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
DMA_DeInit(DMA1_Channel1); //DMA復(fù)位,通道1
DMA_csh.DMA_PeripheralBaseAddr = ADC1_DR_Address; //ADC1地址
DMA_csh.DMA_MemoryBaseAddr = (unsigned int)ADCConvertedValue; //內(nèi)存地址
DMA_csh.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_csh.DMA_BufferSize = SAMPDEPTH; //緩沖大小為采樣深度
DMA_csh.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外設(shè)地址固定
DMA_csh.DMA_MemoryInc = DMA_MemoryInc_Enable; //內(nèi)存地址自增
DMA_csh.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_csh.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_csh.DMA_Mode = DMA_Mode_Circular; //循環(huán)傳輸
DMA_csh.DMA_Priority = DMA_Priority_High; //DMA優(yōu)先級高
DMA_csh.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1,&DMA_csh); //寫入DMA1配置參數(shù)
DMA_Cmd(DMA1_Channel1,ENABLE); //使能DMA1通道1
DMA_ITConfig(DMA1_Channel1,DMA_IT_TC,ENABLE); //使能DMA CH1中斷
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//配置TIM3工作在18MHz,為AD提供觸發(fā)
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = 1;
TIM_TimeBaseStructure.TIM_Prescaler = 99; //工作在18M，每格最大值時(shí)，不至于溢出
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStructure);
TIM_SelectOutputTrigger(TIM3,TIM_TRGOSource_Update); //使用TIM3事件更新作為ADC觸發(fā)
//配置ADC
ADC_csh.ADC_Mode = ADC_Mode_Independent; //獨(dú)立ADC模式
ADC_csh.ADC_ScanConvMode = DISABLE; //關(guān)閉掃描模式
ADC_csh.ADC_ContinuousConvMode = DISABLE; //連續(xù)AD轉(zhuǎn)換開啟
ADC_csh.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T3_TRGO; //由TIM3提供的觸發(fā)事件進(jìn)行觸發(fā)AD轉(zhuǎn)換
ADC_csh.ADC_DataAlign = ADC_DataAlign_Right; //數(shù)據(jù)右對齊
ADC_csh.ADC_NbrOfChannel = 1; //要轉(zhuǎn)換的通道數(shù)目1
ADC_Init(ADC1,&ADC_csh); //寫入ADC1配置參數(shù)
ADC_RegularChannelConfig(ADC1,ADC_Channel_11,1,ADC_SampleTime_1Cycles5);//采樣速率1M
ADC_DMACmd(ADC1,ENABLE); //使能ADC1 DMA
ADC_ExternalTrigConvCmd(ADC1,ENABLE); //打開ADC1外部觸發(fā)
ADC_InjectedChannelConfig(ADC1,ADC_Channel_16,1,ADC_SampleTime_239Cycles5); //配置ADC1通道16為注入通道1
ADC_ExternalTrigInjectedConvConfig(ADC1,ADC_ExternalTrigInjecConv_None); //軟件觸發(fā)注入通道的轉(zhuǎn)換
ADC_TempSensorVrefintCmd(ENABLE); //使能溫度傳感器
ADC_Cmd(ADC1,ENABLE); //使能ADC1
ADC_ResetCalibration(ADC1); //復(fù)位校準(zhǔn)寄存器
while(ADC_GetResetCalibrationStatus(ADC1)); //等待校準(zhǔn)寄存器復(fù)位完成
ADC_StartCalibration(ADC1); //開始校準(zhǔn)
while(ADC_GetCalibrationStatus(ADC1)); //等待校準(zhǔn)完成
TIM_Cmd(TIM3,ENABLE);
}
/*-----------------------------------------
函數(shù)說明:通過注入通道1轉(zhuǎn)換內(nèi)部溫度傳感器
AD值,讀取10次有效數(shù)據(jù)取平均返回
------------------------------------------*/
u16 GetTempSensor(void)
{
u16 temp=0,i,k=0;
for(i=0; i<10; )
{
ADC_SoftwareStartInjectedConvCmd(ADC1,ENABLE); //軟件觸發(fā)注入通道的轉(zhuǎn)換
k = (0x6EE - ADC_GetInjectedConversionValue(ADC1,ADC_InjectedChannel_1)) / 0x05 + 25;
if(k>0 && k<100)
{
temp += k;
i++;
}
}
temp /= 10;
return temp;
}
/*-----------------------------------------
函數(shù)說明:ADC1初始化
------------------------------------------*/
void ADC1_Init(void)
{
ADC1_GPIO_Init();
ADC1_Mode_Config();
}
/*-----------------------------------------
函數(shù)說明:ADC傳輸DMA通道1中斷服務(wù)程序
DMA把AD值傳輸?shù)骄彌_區(qū)完成后關(guān)閉定
時(shí)器3(作為觸發(fā)AD轉(zhuǎn)換的定時(shí)器)同時(shí)
置更新完成標(biāo)志位為1,開定時(shí)器3在應(yīng)
用中開啟.
------------------------------------------*/
void DMA1_Channel1_IRQHandler()
{
OSIntNesting++;
DMA_ClearFlag(DMA1_FLAG_TC1); //清除DMA傳輸完成中斷
TIM_Cmd(TIM3,DISABLE); //關(guān)閉TIM3
WaveCtrl.UpdatTrue = 1; //已經(jīng)完成一次波形FIFO,可以批量讀出數(shù)據(jù)
OSIntExit();
}
/*-----------------------------------------
函數(shù)說明:擦除AD緩沖區(qū)
------------------------------------------*/
void Earse_AD_FIFO(void)
{
uint32_t i;
for(i=0; i<sampdepth; i++)
{
ADCConvertedValue[i] = 0;
}
}
++++++完整密碼詳見附件+++++++

復(fù)制代碼

国产免费AV|泡泡玛特欧洲总部将设在伦敦|中文天堂网www新版资源在线|一本久道综合在线中文|国精产品一二三产区的使用方法|香蕉鱼在线观看|www.27eee

ELEOK