stm32的示波器程序設計 DAC1輸出三角波

ID:587820 · 發表于 2019-7-24 13:33

基于stm32F1的示波器設計，外加三角波發生器

單片機源程序如下:

#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "lcd.h"
#include "usart.h"
#include "adc.h"
#include "dac.h"
#include "exti.h"
#include "stm32f10x_adc.h"
u16 buf[1000];
u16 table[50] ={0,25,50,75,100,125,150,175,200,225,250,275,300,325,350,375,400,425,450,475,500,525,550,575,600,625,650,675,700,725,750,775,800,825,850};
u16 table1[160] ={0,5,10,15,20,30,35,40,45,55,60,65,70,80,85,
90,95,105,110,115,120,130,135,140,145,155,
160,165,170,180,185,190,195,205,210,215,220,
230,235,240,245,250,255,260,265,270,275,280,285,290,295,300,305,
310,315,320,325,330,335,340,345,350,355,360,365,370,375,
380,385,390,395,400,405,410,415,420,425,430,435,440,445,450,455,460,465,470,475,
480,485,490,495,500,505,510,515,520,525,530,535,540,545,550,555,560,565,570,575,
580,585,590,595,600,605,610,615,620,625,630,635,640,645,650,655,660,665,670,675,
680,685,690,695,700,705,710,715,720,725};
u16 Ypos1=100,Ypos2=100,Xpos1,Xpos2;
u16 adcx,dsl;
float temp1;
u16 t=75;
float p;
u16 h=3;
u16 d=13;
u32 tim=1;
u32 bei=1;
u16 Yinit=75;
u8 a;
u8 len;
void drawgaid() //畫網格
{
u16 x,y;
for(x=0;x<301;x=x+25)
for(y=0;y<201;y=y+5)
{
LCD_Fast_DrawPoint(x,y,BLUE );
}
for(y=0;y<201;y=y+25)
for(x=0;x<301;x=x+5)
{
LCD_Fast_DrawPoint(x,y,BLUE );
}
}
void clear_point(u16 hang)//更新顯示屏當前列
{
float index_clear_lie = 50;
POINT_COLOR = BLACK ;
for(index_clear_lie = 50;index_clear_lie <426;index_clear_lie=index_clear_lie+1)
{
LCD_DrawPoint(hang,index_clear_lie );
LCD_DrawPoint(hang+1,index_clear_lie );
LCD_DrawPoint(hang+2,index_clear_lie );
LCD_DrawPoint(hang+3,index_clear_lie );
LCD_DrawPoint(hang+4,index_clear_lie );
}
if(hang==table[h])//判斷hang是否為25的倍數
{
for(index_clear_lie = 50;index_clear_lie <426;index_clear_lie=index_clear_lie+5)
{
LCD_Fast_DrawPoint(hang ,index_clear_lie, GREEN );
}
h++;
if(h>29) h=3;
}
if(hang ==table1[d])//判斷hang是否為5的倍數
{
for(index_clear_lie = 50;index_clear_lie <426;index_clear_lie=index_clear_lie+25)//行數
{
LCD_Fast_DrawPoint(hang ,index_clear_lie,YELLOW );
}
d++;
if(d>135) d=13;//行長度
}
POINT_COLOR=RED;
}
void DrawOscillogram()//畫波形圖
{
for(t=15;t<146;t++)//存儲AD數值
{
buf[t] =Get_Adc(ADC_Channel_1);
if(tim>1)
delay_us(tim );//改變AD取樣間隔
}
for(t=15;t<146;t++)
{
p=t*5;
clear_point(p );
Ypos2=Yinit+buf[t]*100/4096;//轉換坐標
Ypos2=Ypos2*bei;
if(Ypos2 >450) Ypos2 =450; //超出范圍不顯示
LCD_DrawLine (5*t ,2*Ypos1+75 ,5*(t+1),2*Ypos2+75 );
Ypos1 =Ypos2 ;
}
}
float get_vpp(void) //獲取峰峰值
{
u32 max_data=buf[0];
u32 min_data=buf[0];
u32 n=0;
float Vpp=0;
for(n = 1;n<201;n++)
{
if(buf[n]>max_data)
{
max_data = buf[n];
}
if(buf[n]<min_data)
{
min_data = buf[n];
}
}
Vpp = (float)(max_data-min_data);
Vpp = Vpp*(3300.0/4095);
return Vpp;
}
int main(void)
{
u16 adcx;
float temp;
delay_init(); //延時函數初始化
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//設置中斷優先級分組為組2：2位搶占優先級，2位響應優先級
uart_init(115200); //串口初始化為115200
LED_Init(); //LED端口初始化
LCD_Init();
Adc_Init(); //ADC初始化
Dac1_Init(); //DAC初始化
KEY_Init ();
POINT_COLOR=RED;
LCD_Display_Dir(1);
//LCD_ShowString(0,210,200,24,24,"Vpp=0000mv");
//LCD_ShowxNum(284,220,tim ,3,16,0);
// POINT_COLOR=RED;//設置字體為紅色
//LCD_ShowString(60,50,200,16,16,"WarShip STM32");
//LCD_ShowString(60,70,200,16,16,"ADC TEST");
//LCD_ShowString(60,90,200,16,16,"ATOM@ALIENTEK");
//LCD_ShowString(60,110,200,16,16,"2015/1/14");
//顯示提示信息
//POINT_COLOR=BLUE;//設置字體為藍色
//LCD_ShowString(60,130,200,16,16,"ADC_CH0_VAL:");
//LCD_ShowString(60,150,200,16,16,"ADC_CH0_VOL:0.000V");
while(1)
{
adcx=Get_Adc_Average(ADC_Channel_1,10);
//LCD_ShowxNum(156,130,adcx,4,16,0);//顯示ADC的值
temp=(float)adcx*(3.3/4096);
adcx=temp;
//LCD_ShowxNum(156,150,adcx,1,16,0);//顯示電壓值
temp-=adcx;
temp*=1000;
//LCD_ShowxNum(172,150,temp,3,16,0X80);
DrawOscillogram();//畫波形
temp1=get_vpp();//峰峰值mv
LCD_ShowxNum(100,450,temp1,4,24,0); //顯示峰峰值mv
LED0=!LED0;//判斷程序是否運行
}
}

復制代碼

所有資料51hei提供下載:

單通道示波器+DAC1輸出三角波.7z (242.46 KB, 下載次數: 37)

帳號		自動登錄	找回密碼
密碼			立即注冊

久久久久久久999_99精品久久精品一区二区爱城_成人欧美一区二区三区在线播放_国产精品日本一区二区不卡视频_国产午夜视频_欧美精品在线观看免费

stm32的示波器程序設計 DAC1輸出三角波