這個單片機程序定義沒怎么看懂，H,M,L沒懂什么意思，還有就是為什么要乘100000,100...

ID:551568 · 發表于 2019-6-1 00:50

void READS()
{
      uchar Mileage_H,Mileage_M,Mileage_L;
      delay(10);
      RADIUS=read_add(0x01);
      delay(10);
      SAFE_SPEED=read_add(0x02);

      delay(10);
      Mileage_H=read_add(0x03);
      delay(10);
      Mileage_M=read_add(0x04);
      delay(10);
      Mileage_L=read_add(0x05);

      Mileage=Mileage_H*100000+Mileage_M*1000+Mileage_L*10;
}

//寫初值
void SETS()
{
      delay(10);
      write_add(0x01,RADIUS);
      delay(10);
      write_add(0x02,SAFE_SPEED);

/*       Mileage_H=Mileage/10000;                      //123.4560
      Mileage_M=Mileage%10000/100;
      Mileage_L=Mileage%10000%100;       */
      delay(10);
      write_add(0x03,Mileage/100000);
      delay(10);
      write_add(0x04,Mileage%100000/1000);
      delay(10);
      write_add(0x05,Mileage%100000%1000/10);
}
我是一個單片機小白，希望各位大佬相助一下，

ID:511890 · 發表于 2019-6-1 03:59

程序不全。不知道為啥要這樣做，可能和讀取的位數有關，每次只能read_add兩個字符。按照你給的代碼。uchar應該是unsigned char類型。范圍為0~255的整數。而Mileage最大值應該是一個6-7位數以上的數，超出了unsigned char范圍。因此，Mileage_H表示第6位以上的數，Mileage_M表示第4位第5位，Mileage_L表示第2位第3位。

ID:552248 · 發表于 2019-6-1 07:28

從void SETS()可以看出，這是個用整形數據來處理浮點類型數據的函數， Mileage=Mileage_H*100000+Mileage_M*1000+Mileage_L*10;Mileage是最終浮點數據值用整形存儲的變量值，Mileage_H*100000是高位擴大100000倍作為記錄單元，其它*1000同理

ID:330198 · 發表于 2019-6-1 09:20

你這個估計是把數據存在EEPROM中的，乘100000是為了變成整數，好把每一位數值取出來單獨保存。

ID:160500 · 發表于 2019-6-1 10:49

H、M、L是高中低三個位段的數，乘100000,1000，10是分別擴大這么多倍的和賦值給Mileage。為什么要乘因為把原來的數分開時縮小了這么多的倍，恢復自然要再乘回來

ID:551568 · 發表于 2019-6-1 14:01

幻劍心發表于 2019-6-1 03:59
程序不全。不知道為啥要這樣做，可能和讀取的位數有關，每次只能read_add兩個字符。按照你給的代碼。uchar ...

那我可以把全部程序發給你看一下嗎就這里不怎么懂什么意思你的評論我覺得挺好的但是好像有什么24小時評分限制我明天再給評分謝謝了希望能回復一下實在是單片機小白想學習一下很多不懂的

ID:511890 · 發表于 2019-6-1 16:30

我的國兒發表于 2019-6-1 14:01
那我可以把全部程序發給你看一下嗎就這里不怎么懂什么意思你的評論我覺得挺好的但是好像有什么24 ...

可以，不過要晚上才有時間了。

ID:551568 · 發表于 2019-6-1 17:16

幻劍心發表于 2019-6-1 16:30
可以，不過要晚上才有時間了。

#include<reg52.h> //調用單片機頭文件
#include "DS18B20.h"
#include <stdio.h>
#define uchar unsigned char //無符號字符型宏定義變量范圍0~255
#define uint unsigned int //無符號整型宏定義變量范圍0~65535
#include "Data.h"
#include "DS1302.h"
#include "AT24C02.h"
sbit COUNT_IN=P3^2; //脈沖輸入端口
//定義1602相關管腳
sbit rs=P1^4; //寄存器選擇信號 H：數據 L:指令
sbit en=P1^0; //片選信號下降沿觸發
//鍵盤定義
sbit K1=P3^4; //設置時間
sbit K3=P3^6; //減按鍵
sbit K2=P3^5; //加按鍵
sbit K4=P3^7; //設置半徑安全距離
sbit BEEP=P3^0; //蜂鳴器外接端口
uint count;
unsigned long Velocity,Mileage;
uchar code tab1[]={" / / : "}; //時間年月日時分星期
uchar code tab2[]={" 0.000km 00 "}; //里程速度
uchar code tab3[]={"Wheel Radius cm"}; // 半徑
uchar code tab4[]={"Safe Speed km/h"}; // 安全速度
uchar code tab5[]={"Sec : "}; // 在按鍵設置的時候會顯示秒
uchar Display_Buff[30]; //顯示
uchar Mode=0;
uchar bike_set=0;
uchar a;
char RADIUS,SAFE_SPEED;
bit LED_SEC;
uchar before_sec;
//自定義字符RAM
uchar code num[]={
0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00,//1
0x1f,0x01,0x01,0x1f,0x10,0x10,0x1f,0x00,//2
0x1f,0x01,0x01,0x1f,0x01,0x01,0x1f,0x00,//3
0x11,0x11,0x11,0x1f,0x01,0x01,0x01,0x00,//4
0x1f,0x10,0x10,0x1f,0x01,0x01,0x1f,0x00,//5
0x1f,0x10,0x10,0x1f,0x11,0x11,0x1f,0x00,//6
0x1f,0x01,0x01,0x01,0x01,0x01,0x01,0x00,//7 顯示星期依次為周一到周日
};
void READS();
void SETS();
void delay(uint x)
{
uint i,j;
for(i=0;i<x;i++)
for(j=0;j<110;j++);
}
void init()
{
IT0=1; //INT0負跳變觸發
TMOD=0x01;//定時器工作于方式1
TH0=0x3c; //50ms
TL0=0xb0;
EA=1; //CPU開中斷總允許
ET0=1;//開定時中斷
EX0=1;//開外部INTO中斷
TR0=1;//啟動定時
}
/********液晶寫入指令函數與寫入數據函數，以后可調用**************/
void write_1602com(uchar com)//****液晶寫入指令函數****
{
rs=0;//把寄存器置為指令
P0=com;//送入數據
delay(1);
en=1;//拉高使能端，為制造有效的下降沿做準備
delay(1);
en=0;//en由高變低，產生下降沿，液晶執行命令
}
void write_1602dat(uchar dat)//***液晶寫入數據函數****
{
rs=1;//把寄存器置為數據
P0=dat;//送入數據
delay(1);
en=1; //en置高電平，為制造下降沿做準備
delay(1);
en=0; //en由高變低，產生下降沿，液晶執行命令
}
void write_1602_Str(uchar *Str)
{
uchar i = 0;
while (Str[i])
{
write_1602dat(Str[i++]);
}
}
//自定義字符集
void Lcd_ram() // 液晶寫數據。
{
uchar i,j,k=0;
uchar temp=0x40;//設定CGRAM地址指令01000000（DB5~DB0含義)
for(i=0;i<7;i++) //自定義7個字符
{
for(j=0;j<8;j++)
{
write_1602com(temp+j);
write_1602dat(num[k]); //分別寫入CGRAM的字模
k++;
}
temp=temp+8;
}
}
void lcd_init()//***液晶初始化函數****
{
Lcd_ram();
write_1602com(0x38);//設置液晶8位數據工作模式，2行，5×7
write_1602com(0x0c);//整體顯示、開光標、不閃爍
write_1602com(0x06);//設定輸入方式屏不移位
write_1602com(0x01);//清除屏幕顯示
write_1602com(0x80);//顯示固定符號從第一行第1個位置之后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab1[a]);//向液晶屏寫固定符號部分
}
write_1602com(0x80+0x40);//顯示固定符號寫入位置，從第2個位置后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab2[a]);//寫顯示固定符號
}
}
void display() //液晶顯示部分
{
if(Mode==0&&bike_set==0)
{
//讀時間
Ds1302_Read_Time();
//顯示時間
write_1602com(0x80);
write_1602dat(0x30+time_buf1[1]/10); //顯示設置
write_1602dat(0x30+time_buf1[1]%10);
write_1602com(0x80+3);
write_1602dat(0x30+time_buf1[2]/10);
write_1602dat(0x30+time_buf1[2]%10);
write_1602com(0x80+6);
write_1602dat(0x30+time_buf1[3]/10);
write_1602dat(0x30+time_buf1[3]%10);
write_1602com(0x80+9);
write_1602dat(0x30+time_buf1[4]/10);
write_1602dat(0x30+time_buf1[4]%10);
write_1602com(0x80+12);
write_1602dat(0x30+time_buf1[5]/10);
write_1602dat(0x30+time_buf1[5]%10);
write_1602com(0x80+15);
write_1602dat(time_buf1[7]-1);
if(before_sec!=time_buf1[6])
{
before_sec=time_buf1[6];
write_1602com(0x80+11);
write_1602dat(':');
LED_SEC=1;
}
if(LED_SEC==0)
{
write_1602com(0x80+11);
write_1602dat(' ');
}
write_1602com(0x80+0x40);
if(Mileage/1000000==0)
write_1602dat(' ');
else
write_1602dat(0x30+Mileage/1000000);//數字+0x30得到該數字的LCD1602顯示碼
if(Mileage%1000000/100000==0)
write_1602dat(' ');
else
write_1602dat(0x30+Mileage%1000000/100000);//數字+0x30得到該數字的LCD1602顯示碼
write_1602dat(0x30+Mileage%1000000%100000/10000);//數字+0x30得到該數字的LCD1602顯示碼
write_1602com(0x80+0x40+4);
write_1602dat(0x30+Mileage%1000000%100000%10000/1000);//數字+30得到該數字的LCD1602顯示碼
write_1602dat(0x30+Mileage%1000000%100000%10000%1000/100);//數字+30得到該數字的LCD1602顯示碼
write_1602dat(0x30+Mileage%1000000%100000%10000%1000%100/10);//數字+30得到該數字的LCD1602顯示碼
SETS();
write_1602com(0x80+0x40+10);
write_1602dat(0x30+Velocity/10);
write_1602dat(0x30+Velocity%10);//數字+30得到該數字的LCD1602顯示碼
write_1602com(0x80+0x40+13);
sprintf(Display_Buff, "%dC", Temperature);
write_1602_Str(Display_Buff);
}
else if(Mode!=0)
{
switch(Mode)
{
case 1:
write_1602com(0x80+0x40);//顯示固定符號寫入位置
for(a=0;a<16;a++)
{
write_1602dat(tab5[a]);//寫顯示固定符號
}
write_1602com(0x80+0x40+14);
write_1602dat(0x30+time_buf1[6]/10);
write_1602dat(0x30+time_buf1[6]%10);
write_1602com(0x0F); //打開閃爍
write_1602com(0x80+1);
break;
case 2:
write_1602com(0x80+4);
break;
case 3:
write_1602com(0x80+7);
break;
case 4:
write_1602com(0x80+10);
break;
case 5:
write_1602com(0x80+13);
break;
case 6:
write_1602com(0x80+0x40+15);
break;
case 7:
write_1602com(0x80+15);
break;
case 8:
write_1602com(0x0c);
write_1602com(0x80);//顯示固定符號從第一行第1個位置之后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab1[a]);//向液晶屏寫固定符號部分
}
write_1602com(0x80+0x40);//顯示固定符號寫入位置，從第2個位置后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab2[a]);//寫顯示固定符號
}
break;
}
}
else if(bike_set!=0)
{
switch(bike_set)
{
case 1:
write_1602com(0x80);//顯示固定符號寫入位置
for(a=0;a<16;a++)
{
write_1602dat(tab3[a]);//寫顯示固定符號
}
write_1602com(0x80+0x40);//顯示固定符號寫入位置
for(a=0;a<16;a++)
{
write_1602dat(tab4[a]);//寫顯示固定符號
}
write_1602com(0x80+12);
write_1602dat(0x30+RADIUS/10); //車輪半徑
write_1602dat(0x30+RADIUS%10);
write_1602com(0x80+0x40+10);
write_1602dat(0x30+SAFE_SPEED/10); //安全速度
write_1602dat(0x30+SAFE_SPEED%10);
write_1602com(0x0F); //打開光標閃爍
write_1602com(0x80+13);
break;
case 2:
write_1602com(0x80+0x40+11);
break;
case 3:
write_1602com(0x0c);
write_1602com(0x80);//顯示固定符號從第一行第1個位置之后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab1[a]);//向液晶屏寫固定符號部分
}
write_1602com(0x80+0x40);//顯示固定符號寫入位置，從第2個位置后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab2[a]);//寫顯示固定符號
}
break;
}
}
}
void KEY()
{
if(bike_set==0&&K1==0) //按鍵部分與蜂鳴器
{
delay(20);
if(bike_set==0&&K1==0)
{
BEEP=0;
delay(50);
BEEP=1;
Mode++;
display();
if(Mode>=8)
{
Mode=0;
Ds1302_Write_Time();
}
}
while(bike_set==0&&K1==0);
}
if(K4==0&&Mode==0)
{
delay(20);
if(K4==0&&Mode==0)
{
BEEP=0;
delay(50);
BEEP=1;
bike_set++;
display();
if(bike_set>=3)
{
bike_set=0;
SETS();
}
}
while(Mode==0&&K4==0);
}
//+
if(K2==0&&(Mode!=0||bike_set!=0))
{
delay(20);
//調時
if(K2==0&&(Mode!=0||bike_set!=0))
{
BEEP=0;
delay(50);
BEEP=1;
switch(Mode)
{
case 1:
time_buf1[1]++;
if(time_buf1[1]>=100)
time_buf1[1]=0;
write_1602com(0x80);
write_1602dat(0x30+time_buf1[1]/10);
write_1602dat(0x30+time_buf1[1]%10);
write_1602com(0x80+1);
break;
case 2:
time_buf1[2]++;
if(time_buf1[2]>=13)
time_buf1[2]=1;
write_1602com(0x80+3);
write_1602dat(0x30+time_buf1[2]/10);
write_1602dat(0x30+time_buf1[2]%10);
write_1602com(0x80+4);
break;
case 3:
time_buf1[3]++;
if(time_buf1[3]>=YDay(time_buf1[1],time_buf1[2])+1)
time_buf1[3]=1;
write_1602com(0x80+6);
write_1602dat(0x30+time_buf1[3]/10);
write_1602dat(0x30+time_buf1[3]%10);
write_1602com(0x80+7);
break;
case 4:
time_buf1[4]++;
if(time_buf1[4]>=24)
time_buf1[4]=0;
write_1602com(0x80+9);
write_1602dat(0x30+time_buf1[4]/10);
write_1602dat(0x30+time_buf1[4]%10);
write_1602com(0x80+10);
break;
case 5:
time_buf1[5]++;
if(time_buf1[5]>=60)
time_buf1[5]=0;
write_1602com(0x80+12);
write_1602dat(0x30+time_buf1[5]/10);
write_1602dat(0x30+time_buf1[5]%10);
write_1602com(0x80+13);
break;
case 6:
time_buf1[6]++;
if(time_buf1[6]>=60)
time_buf1[6]=0;
write_1602com(0x80+0x40+14);
write_1602dat(0x30+time_buf1[6]/10);
write_1602dat(0x30+time_buf1[6]%10);
write_1602com(0x80+0x40+15);
break;
case 7:
time_buf1[7]++;
if(time_buf1[7]>=8)
time_buf1[7]=1;
write_1602com(0x80+15);
write_1602dat(time_buf1[7]-1);
write_1602com(0x80+15);
break;
}
switch(bike_set)
{
case 1:
RADIUS++;
if(RADIUS>=71)
RADIUS=0;
write_1602com(0x80+12);
write_1602dat(0x30+RADIUS/10);
write_1602dat(0x30+RADIUS%10);
write_1602com(0x80+13);
break;
case 2:
SAFE_SPEED++;
if(SAFE_SPEED>=100)
SAFE_SPEED=0;
write_1602com(0x80+0x40+10);
write_1602dat(0x30+SAFE_SPEED/10);
write_1602dat(0x30+SAFE_SPEED%10);
write_1602com(0x80+0x40+11);
break;
}
}
while(K2==0);
}
//-
if(K3==0&&(Mode!=0||bike_set!=0))
{
delay(20);
//調時
if(K3==0&&(Mode!=0||bike_set!=0))
{
BEEP=0;
delay(50);
BEEP=1;
switch(Mode)
{
case 1:
time_buf1[1]--;
if(time_buf1[1]<0)
time_buf1[1]=99;
write_1602com(0x80);
write_1602dat(0x30+time_buf1[1]/10);
write_1602dat(0x30+time_buf1[1]%10);
write_1602com(0x80+1);
break;
case 2:
time_buf1[2]--;
if(time_buf1[2]<=0)
time_buf1[2]=12;
write_1602com(0x80+3);
write_1602dat(0x30+time_buf1[2]/10);
write_1602dat(0x30+time_buf1[2]%10);
write_1602com(0x80+4);
break;
case 3:
time_buf1[3]--;
if(time_buf1[3]<=0)
time_buf1[3]=YDay(time_buf1[1],time_buf1[2]);
write_1602com(0x80+6);
write_1602dat(0x30+time_buf1[3]/10);
write_1602dat(0x30+time_buf1[3]%10);
write_1602com(0x80+7);
break;
case 4:
time_buf1[4]--;
if(time_buf1[4]<0)
time_buf1[4]=23;
write_1602com(0x80+9);
write_1602dat(0x30+time_buf1[4]/10);
write_1602dat(0x30+time_buf1[4]%10);
write_1602com(0x80+10);
break;
case 5:
time_buf1[5]--;
if(time_buf1[5]<0)
time_buf1[5]=59;
write_1602com(0x80+12);
write_1602dat(0x30+time_buf1[5]/10);
write_1602dat(0x30+time_buf1[5]%10);
write_1602com(0x80+13);
break;
case 6:
time_buf1[6]--;
if(time_buf1[6]<0)
time_buf1[6]=59;
write_1602com(0x80+0x40+14);
write_1602dat(0x30+time_buf1[6]/10);
write_1602dat(0x30+time_buf1[6]%10);
write_1602com(0x80+0x40+15);
break;
case 7:
time_buf1[7]--;
if(time_buf1[7]<1)
time_buf1[7]=7;
write_1602com(0x80+15);
write_1602dat(time_buf1[7]-1);
write_1602com(0x80+15);
break;
}
switch(bike_set)
{
case 1:
RADIUS--;
if(RADIUS<0)
RADIUS=70;
write_1602com(0x80+12);
write_1602dat(0x30+RADIUS/10);
write_1602dat(0x30+RADIUS%10);
write_1602com(0x80+13);
break;
case 2:
SAFE_SPEED--;
if(SAFE_SPEED<0)
SAFE_SPEED=99;
write_1602com(0x80+0x40+10);
write_1602dat(0x30+SAFE_SPEED/10);
write_1602dat(0x30+SAFE_SPEED%10);
write_1602com(0x80+0x40+11);
break;
}
}
while(K3==0);
}
if(K2==0&&K3==0&&Mode==0&bike_set==0)
{
BEEP=0;
delay(100);
BEEP=1;
delay(100);
BEEP=0;
delay(100);
BEEP=1;
delay(100);
Mileage=0;
SETS();
while(K2==0&&K3==0);
}
}
void BJ_SAFE()
{
if(Velocity>SAFE_SPEED)
{
BEEP=0; //蜂鳴器響
}
else
{
BEEP=1; //蜂鳴器不響
}
}
void main()
{
//初始化
Ds1302_Init();
lcd_init();
initeeprom();
//讀取初始參數
READS();
//定時器初始化
// InitTimer0();
init();
lcd_init();
before_sec=time_buf1[6];
Temp_Get(); // 第一次采集是錯誤數據
delay(200);
Temp_Get(); // 第一次采集是錯誤數據
delay(200);
Temp_Get(); // 第一次采集是錯誤數據
delay(200);
Temp_Get(); // 第一次采集是錯誤數據
delay(200);
Temp_Get(); // 第一次采集是錯誤數據
while(1) //等待定時器中斷
{
if(Mode==0&&bike_set==0)
{
display();
BJ_SAFE();
}
KEY();
Temp_Handle();
}
}
void EXINT0() interrupt 0
{
count++;
}
void time0() interrupt 1
{
uchar m,n;
TH0=0x3c;
TL0=0xb0; //50ms
m++;
if(LED_SEC==1)
{
n++;
if(n>=10)
{
n=0;
LED_SEC=0;
}
}
if(m>=10)
{
m=0;
Mileage=Mileage+count*2*3.14*RADIUS/20/10;//里程數mileage=里程+記數值*輪周長/脈沖數/10
Velocity=count*2*3.14*RADIUS/100000*3600*2/20;//總定時500ms
count=0;
}
} // 處理數據，并顯示里程和速度
//讀初值
void READS()
{
uchar Mileage_H,Mileage_M,Mileage_L;
delay(10);
RADIUS=read_add(0x01);
delay(10);
SAFE_SPEED=read_add(0x02);
delay(10);
Mileage_H=read_add(0x03);
delay(10);
Mileage_M=read_add(0x04);
delay(10);
Mileage_L=read_add(0x05);
Mileage=Mileage_H*100000+Mileage_M*1000+Mileage_L*10;
}
//寫初值
void SETS()
{
delay(10);
write_add(0x01,RADIUS);
delay(10);
write_add(0x02,SAFE_SPEED);
/* Mileage_H=Mileage/10000; //123.4560
Mileage_M=Mileage%10000/100;
Mileage_L=Mileage%10000%100; */
delay(10);
write_add(0x03,Mileage/100000);
delay(10);
write_add(0x04,Mileage%100000/1000);
delay(10);
write_add(0x05,Mileage%100000%1000/10);
}

復制代碼

這是主程序，這個程序主要用來測速，用的是光電傳感器，通過定時記脈沖來進行測速，用了一個外部存儲器，就是這里不怎么懂，希望大佬幫下忙，謝謝

ID:551568 · 發表于 2019-6-1 18:37

幻劍心發表于 2019-6-1 16:30
可以，不過要晚上才有時間了。

主要是還是太多不懂了，之前發了一份，不知道發成功沒用，我重新發一下

#include<reg52.h> //調用單片機頭文件
#include "DS18B20.h"
#include <stdio.h>
#define uchar unsigned char //無符號字符型宏定義變量范圍0~255
#define uint unsigned int //無符號整型宏定義變量范圍0~65535
#include "Data.h"
#include "DS1302.h"
#include "AT24C02.h"
sbit COUNT_IN=P3^2; //脈沖輸入端口
//定義1602相關管腳
sbit rs=P1^4; //寄存器選擇信號 H：數據 L:指令
sbit en=P1^0; //片選信號下降沿觸發
//鍵盤定義
sbit K1=P3^4; //設置時間
sbit K3=P3^6; //減按鍵
sbit K2=P3^5; //加按鍵
sbit K4=P3^7; //設置半徑安全距離
sbit BEEP=P3^0; //蜂鳴器外接端口
uint count;
unsigned long Velocity,Mileage;
uchar code tab1[]={" / / : "}; //時間年月日時分星期
uchar code tab2[]={" 0.000km 00 "}; //里程速度
uchar code tab3[]={"Wheel Radius cm"}; // 半徑
uchar code tab4[]={"Safe Speed km/h"}; // 安全速度
uchar code tab5[]={"Sec : "}; // 在按鍵設置的時候會顯示秒
uchar Display_Buff[30]; //顯示
uchar Mode=0;
uchar bike_set=0;
uchar a;
char RADIUS,SAFE_SPEED;
bit LED_SEC;
uchar before_sec;
//自定義字符RAM
uchar code num[]={
0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00,//1
0x1f,0x01,0x01,0x1f,0x10,0x10,0x1f,0x00,//2
0x1f,0x01,0x01,0x1f,0x01,0x01,0x1f,0x00,//3
0x11,0x11,0x11,0x1f,0x01,0x01,0x01,0x00,//4
0x1f,0x10,0x10,0x1f,0x01,0x01,0x1f,0x00,//5
0x1f,0x10,0x10,0x1f,0x11,0x11,0x1f,0x00,//6
0x1f,0x01,0x01,0x01,0x01,0x01,0x01,0x00,//7 顯示星期依次為周一到周日
};
void READS();
void SETS();
void delay(uint x)
{
uint i,j;
for(i=0;i<x;i++)
for(j=0;j<110;j++);
}
void init()
{
IT0=1; //INT0負跳變觸發
TMOD=0x01;//定時器工作于方式1
TH0=0x3c; //50ms
TL0=0xb0;
EA=1; //CPU開中斷總允許
ET0=1;//開定時中斷
EX0=1;//開外部INTO中斷
TR0=1;//啟動定時
}
/********液晶寫入指令函數與寫入數據函數，以后可調用**************/
void write_1602com(uchar com)//****液晶寫入指令函數****
{
rs=0;//把寄存器置為指令
P0=com;//送入數據
delay(1);
en=1;//拉高使能端，為制造有效的下降沿做準備
delay(1);
en=0;//en由高變低，產生下降沿，液晶執行命令
}
void write_1602dat(uchar dat)//***液晶寫入數據函數****
{
rs=1;//把寄存器置為數據
P0=dat;//送入數據
delay(1);
en=1; //en置高電平，為制造下降沿做準備
delay(1);
en=0; //en由高變低，產生下降沿，液晶執行命令
}
void write_1602_Str(uchar *Str)
{
uchar i = 0;
while (Str[i])
{
write_1602dat(Str[i++]);
}
}
//自定義字符集
void Lcd_ram() // 液晶寫數據。
{
uchar i,j,k=0;
uchar temp=0x40;//設定CGRAM地址指令01000000（DB5~DB0含義)
for(i=0;i<7;i++) //自定義7個字符
{
for(j=0;j<8;j++)
{
write_1602com(temp+j);
write_1602dat(num[k]); //分別寫入CGRAM的字模
k++;
}
temp=temp+8;
}
}
void lcd_init()//***液晶初始化函數****
{
Lcd_ram();
write_1602com(0x38);//設置液晶8位數據工作模式，2行，5×7
write_1602com(0x0c);//整體顯示、開光標、不閃爍
write_1602com(0x06);//設定輸入方式屏不移位
write_1602com(0x01);//清除屏幕顯示
write_1602com(0x80);//顯示固定符號從第一行第1個位置之后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab1[a]);//向液晶屏寫固定符號部分
}
write_1602com(0x80+0x40);//顯示固定符號寫入位置，從第2個位置后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab2[a]);//寫顯示固定符號
}
}
void display() //液晶顯示部分
{
if(Mode==0&&bike_set==0)
{
//讀時間
Ds1302_Read_Time();
//顯示時間
write_1602com(0x80);
write_1602dat(0x30+time_buf1[1]/10); //顯示設置
write_1602dat(0x30+time_buf1[1]%10);
write_1602com(0x80+3);
write_1602dat(0x30+time_buf1[2]/10);
write_1602dat(0x30+time_buf1[2]%10);
write_1602com(0x80+6);
write_1602dat(0x30+time_buf1[3]/10);
write_1602dat(0x30+time_buf1[3]%10);
write_1602com(0x80+9);
write_1602dat(0x30+time_buf1[4]/10);
write_1602dat(0x30+time_buf1[4]%10);
write_1602com(0x80+12);
write_1602dat(0x30+time_buf1[5]/10);
write_1602dat(0x30+time_buf1[5]%10);
write_1602com(0x80+15);
write_1602dat(time_buf1[7]-1);
if(before_sec!=time_buf1[6])
{
before_sec=time_buf1[6];
write_1602com(0x80+11);
write_1602dat(':');
LED_SEC=1;
}
if(LED_SEC==0)
{
write_1602com(0x80+11);
write_1602dat(' ');
}
write_1602com(0x80+0x40);
if(Mileage/1000000==0)
write_1602dat(' ');
else
write_1602dat(0x30+Mileage/1000000);//數字+0x30得到該數字的LCD1602顯示碼
if(Mileage%1000000/100000==0)
write_1602dat(' ');
else
write_1602dat(0x30+Mileage%1000000/100000);//數字+0x30得到該數字的LCD1602顯示碼
write_1602dat(0x30+Mileage%1000000%100000/10000);//數字+0x30得到該數字的LCD1602顯示碼
write_1602com(0x80+0x40+4);
write_1602dat(0x30+Mileage%1000000%100000%10000/1000);//數字+30得到該數字的LCD1602顯示碼
write_1602dat(0x30+Mileage%1000000%100000%10000%1000/100);//數字+30得到該數字的LCD1602顯示碼
write_1602dat(0x30+Mileage%1000000%100000%10000%1000%100/10);//數字+30得到該數字的LCD1602顯示碼
SETS();
write_1602com(0x80+0x40+10);
write_1602dat(0x30+Velocity/10);
write_1602dat(0x30+Velocity%10);//數字+30得到該數字的LCD1602顯示碼
write_1602com(0x80+0x40+13);
sprintf(Display_Buff, "%dC", Temperature);
write_1602_Str(Display_Buff);
}
else if(Mode!=0)
{
switch(Mode)
{
case 1:
write_1602com(0x80+0x40);//顯示固定符號寫入位置
for(a=0;a<16;a++)
{
write_1602dat(tab5[a]);//寫顯示固定符號
}
write_1602com(0x80+0x40+14);
write_1602dat(0x30+time_buf1[6]/10);
write_1602dat(0x30+time_buf1[6]%10);
write_1602com(0x0F); //打開閃爍
write_1602com(0x80+1);
break;
case 2:
write_1602com(0x80+4);
break;
case 3:
write_1602com(0x80+7);
break;
case 4:
write_1602com(0x80+10);
break;
case 5:
write_1602com(0x80+13);
break;
case 6:
write_1602com(0x80+0x40+15);
break;
case 7:
write_1602com(0x80+15);
break;
case 8:
write_1602com(0x0c);
write_1602com(0x80);//顯示固定符號從第一行第1個位置之后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab1[a]);//向液晶屏寫固定符號部分
}
write_1602com(0x80+0x40);//顯示固定符號寫入位置，從第2個位置后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab2[a]);//寫顯示固定符號
}
break;
}
}
else if(bike_set!=0)
{
switch(bike_set)
{
case 1:
write_1602com(0x80);//顯示固定符號寫入位置
for(a=0;a<16;a++)
{
write_1602dat(tab3[a]);//寫顯示固定符號
}
write_1602com(0x80+0x40);//顯示固定符號寫入位置
for(a=0;a<16;a++)
{
write_1602dat(tab4[a]);//寫顯示固定符號
}
write_1602com(0x80+12);
write_1602dat(0x30+RADIUS/10); //車輪半徑
write_1602dat(0x30+RADIUS%10);
write_1602com(0x80+0x40+10);
write_1602dat(0x30+SAFE_SPEED/10); //安全速度
write_1602dat(0x30+SAFE_SPEED%10);
write_1602com(0x0F); //打開光標閃爍
write_1602com(0x80+13);
break;
case 2:
write_1602com(0x80+0x40+11);
break;
case 3:
write_1602com(0x0c);
write_1602com(0x80);//顯示固定符號從第一行第1個位置之后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab1[a]);//向液晶屏寫固定符號部分
}
write_1602com(0x80+0x40);//顯示固定符號寫入位置，從第2個位置后開始顯示
for(a=0;a<16;a++)
{
write_1602dat(tab2[a]);//寫顯示固定符號
}
break;
}
}
}
void KEY()
{
if(bike_set==0&&K1==0) //按鍵部分與蜂鳴器
{
delay(20);
if(bike_set==0&&K1==0)
{
BEEP=0;
delay(50);
BEEP=1;
Mode++;
display();
if(Mode>=8)
{
Mode=0;
Ds1302_Write_Time();
}
}
while(bike_set==0&&K1==0);
}
if(K4==0&&Mode==0)
{
delay(20);
if(K4==0&&Mode==0)
{
BEEP=0;
delay(50);
BEEP=1;
bike_set++;
display();
if(bike_set>=3)
{
bike_set=0;
SETS();
}
}
while(Mode==0&&K4==0);
}
//+
if(K2==0&&(Mode!=0||bike_set!=0))
{
delay(20);
//調時
if(K2==0&&(Mode!=0||bike_set!=0))
{
BEEP=0;
delay(50);
BEEP=1;
switch(Mode)
{
case 1:
time_buf1[1]++;
if(time_buf1[1]>=100)
time_buf1[1]=0;
write_1602com(0x80);
write_1602dat(0x30+time_buf1[1]/10);
write_1602dat(0x30+time_buf1[1]%10);
write_1602com(0x80+1);
break;
case 2:
time_buf1[2]++;
if(time_buf1[2]>=13)
time_buf1[2]=1;
write_1602com(0x80+3);
write_1602dat(0x30+time_buf1[2]/10);
write_1602dat(0x30+time_buf1[2]%10);
write_1602com(0x80+4);
break;
case 3:
time_buf1[3]++;
if(time_buf1[3]>=YDay(time_buf1[1],time_buf1[2])+1)
time_buf1[3]=1;
write_1602com(0x80+6);
write_1602dat(0x30+time_buf1[3]/10);
write_1602dat(0x30+time_buf1[3]%10);
write_1602com(0x80+7);
break;
case 4:
time_buf1[4]++;
if(time_buf1[4]>=24)
time_buf1[4]=0;
write_1602com(0x80+9);
write_1602dat(0x30+time_buf1[4]/10);
write_1602dat(0x30+time_buf1[4]%10);
write_1602com(0x80+10);
break;
case 5:
time_buf1[5]++;
if(time_buf1[5]>=60)
time_buf1[5]=0;
write_1602com(0x80+12);
write_1602dat(0x30+time_buf1[5]/10);
write_1602dat(0x30+time_buf1[5]%10);
write_1602com(0x80+13);
break;
case 6:
time_buf1[6]++;
if(time_buf1[6]>=60)
time_buf1[6]=0;
write_1602com(0x80+0x40+14);
write_1602dat(0x30+time_buf1[6]/10);
write_1602dat(0x30+time_buf1[6]%10);
write_1602com(0x80+0x40+15);
break;
case 7:
time_buf1[7]++;
if(time_buf1[7]>=8)
time_buf1[7]=1;
write_1602com(0x80+15);
write_1602dat(time_buf1[7]-1);
write_1602com(0x80+15);
break;
}
switch(bike_set)
{
case 1:
RADIUS++;
if(RADIUS>=71)
RADIUS=0;
write_1602com(0x80+12);
write_1602dat(0x30+RADIUS/10);
write_1602dat(0x30+RADIUS%10);
write_1602com(0x80+13);
break;
case 2:
SAFE_SPEED++;
if(SAFE_SPEED>=100)
SAFE_SPEED=0;
write_1602com(0x80+0x40+10);
write_1602dat(0x30+SAFE_SPEED/10);
write_1602dat(0x30+SAFE_SPEED%10);
write_1602com(0x80+0x40+11);
break;
}
}
while(K2==0);
}
//-
if(K3==0&&(Mode!=0||bike_set!=0))
{
delay(20);
//調時
if(K3==0&&(Mode!=0||bike_set!=0))
{
BEEP=0;
delay(50);
BEEP=1;
switch(Mode)
{
case 1:
time_buf1[1]--;
if(time_buf1[1]<0)
time_buf1[1]=99;
write_1602com(0x80);
write_1602dat(0x30+time_buf1[1]/10);
write_1602dat(0x30+time_buf1[1]%10);
write_1602com(0x80+1);
break;
case 2:
time_buf1[2]--;
if(time_buf1[2]<=0)
time_buf1[2]=12;
write_1602com(0x80+3);
write_1602dat(0x30+time_buf1[2]/10);
write_1602dat(0x30+time_buf1[2]%10);
write_1602com(0x80+4);
break;
case 3:
time_buf1[3]--;
if(time_buf1[3]<=0)
time_buf1[3]=YDay(time_buf1[1],time_buf1[2]);
write_1602com(0x80+6);
write_1602dat(0x30+time_buf1[3]/10);
write_1602dat(0x30+time_buf1[3]%10);
write_1602com(0x80+7);
break;
case 4:
time_buf1[4]--;
if(time_buf1[4]<0)
time_buf1[4]=23;
write_1602com(0x80+9);
write_1602dat(0x30+time_buf1[4]/10);
write_1602dat(0x30+time_buf1[4]%10);
write_1602com(0x80+10);
break;
case 5:
time_buf1[5]--;
if(time_buf1[5]<0)
time_buf1[5]=59;
write_1602com(0x80+12);
write_1602dat(0x30+time_buf1[5]/10);
write_1602dat(0x30+time_buf1[5]%10);
write_1602com(0x80+13);
break;
case 6:
time_buf1[6]--;
if(time_buf1[6]<0)
time_buf1[6]=59;
write_1602com(0x80+0x40+14);
write_1602dat(0x30+time_buf1[6]/10);
write_1602dat(0x30+time_buf1[6]%10);
write_1602com(0x80+0x40+15);
break;
case 7:
time_buf1[7]--;
if(time_buf1[7]<1)
time_buf1[7]=7;
write_1602com(0x80+15);
write_1602dat(time_buf1[7]-1);
write_1602com(0x80+15);
break;
}
switch(bike_set)
{
case 1:
RADIUS--;
if(RADIUS<0)
RADIUS=70;
write_1602com(0x80+12);
write_1602dat(0x30+RADIUS/10);
write_1602dat(0x30+RADIUS%10);
write_1602com(0x80+13);
break;
case 2:
SAFE_SPEED--;
if(SAFE_SPEED<0)
SAFE_SPEED=99;
write_1602com(0x80+0x40+10);
write_1602dat(0x30+SAFE_SPEED/10);
write_1602dat(0x30+SAFE_SPEED%10);
write_1602com(0x80+0x40+11);
break;
}
}
while(K3==0);
}
if(K2==0&&K3==0&&Mode==0&bike_set==0)
{
BEEP=0;
delay(100);
BEEP=1;
delay(100);
BEEP=0;
delay(100);
BEEP=1;
delay(100);
Mileage=0;
SETS();
while(K2==0&&K3==0);
}
}
void BJ_SAFE()
{
if(Velocity>SAFE_SPEED)
{
BEEP=0; //蜂鳴器響
}
else
{
BEEP=1; //蜂鳴器不響
}
}
void main()
{
//初始化
Ds1302_Init();
lcd_init();
initeeprom();
//讀取初始參數
READS();
//定時器初始化
// InitTimer0();
init();
lcd_init();
before_sec=time_buf1[6];
Temp_Get(); // 第一次采集是錯誤數據
delay(200);
Temp_Get(); // 第一次采集是錯誤數據
delay(200);
Temp_Get(); // 第一次采集是錯誤數據
delay(200);
Temp_Get(); // 第一次采集是錯誤數據
delay(200);
Temp_Get(); // 第一次采集是錯誤數據
while(1) //等待定時器中斷
{
if(Mode==0&&bike_set==0)
{
display();
BJ_SAFE();
}
KEY();
Temp_Handle();
}
}
void EXINT0() interrupt 0
{
count++;
}
void time0() interrupt 1
{
uchar m,n;
TH0=0x3c;
TL0=0xb0; //50ms
m++;
if(LED_SEC==1)
{
n++;
if(n>=10)
{
n=0;
LED_SEC=0;
}
}
if(m>=10)
{
m=0;
Mileage=Mileage+count*2*3.14*RADIUS/20/10;//里程數mileage=里程+記數值*輪周長/脈沖數/10
Velocity=count*2*3.14*RADIUS/100000*3600*2/20;//總定時500ms
count=0;
}
} // 處理數據，并顯示里程和速度
//讀初值
void READS()
{
uchar Mileage_H,Mileage_M,Mileage_L;
delay(10);
RADIUS=read_add(0x01);
delay(10);
SAFE_SPEED=read_add(0x02);
delay(10);
Mileage_H=read_add(0x03);
delay(10);
Mileage_M=read_add(0x04);
delay(10);
Mileage_L=read_add(0x05);
Mileage=Mileage_H*100000+Mileage_M*1000+Mileage_L*10;
}
//寫初值
void SETS()
{
delay(10);
write_add(0x01,RADIUS);
delay(10);
write_add(0x02,SAFE_SPEED);
/* Mileage_H=Mileage/10000; //123.4560
Mileage_M=Mileage%10000/100;
Mileage_L=Mileage%10000%100; */
delay(10);
write_add(0x03,Mileage/100000);
delay(10);
write_add(0x04,Mileage%100000/1000);
delay(10);
write_add(0x05,Mileage%100000%1000/10);
}

復制代碼

ID:511890 · 發表于 2019-6-1 21:02

程序應該是一個里程計數器。外部應該還有霍爾之類的轉速傳感器。根據轉速傳感器得到count，然后根據車輪周長計算，累加成Mileage。通過uchar code tab3[]={"Wheel Radius  cm"};          // 半徑知道RADIUS是半徑。脈沖數20應該是車輪轉20分之1就會發出一次脈沖。再除以10，得到Mileage的單位為分米。
Mileage=Mileage+count*2*3.14*RADIUS/20/10;//里程數mileage=里程+記數值*輪周長/脈沖數/10

程序中READS()作用是單片機開機時從AT24C02讀出存儲在AT24C02中的歷史里程數。SETS()是存儲當前里程數。
根據SETS()中的存儲方式：首先假設Mileage = 6543210  由于AT24C02每次操作的地址或者數據都只是8位(即值范圍為：0~255)Mileage = 6543210遠大于255，所以要把它分開存儲。由前面知道Mileage的單位為分米，再舍掉個位，剛好得到米為單位的值。所以用一下方法存取：
低位：Mileage%100000%1000/10=21
中位：Mileage%100000/1000=43
高位：Mileage/100000=65

uchar code tab2[]={"  0.000km 00 "};       //里程速度
write_1602com(0x80+0x40);
                     if(Mileage/1000000==0)
                     write_1602dat(' ');
                     else
                     write_1602dat(0x30+Mileage/1000000);//數字+0x30得到該數字的LCD1602顯示碼
                     if(Mileage%1000000/100000==0)
                     write_1602dat(' ');
                     else
                     write_1602dat(0x30+Mileage%1000000/100000);//數字+0x30得到該數字的LCD1602顯示碼
                     write_1602dat(0x30+Mileage%1000000%100000/10000);//數字+0x30得到該數字的LCD1602顯示碼
                     write_1602com(0x80+0x40+4);
                     write_1602dat(0x30+Mileage%1000000%100000%10000/1000);//數字+30得到該數字的LCD1602顯示碼
                     write_1602dat(0x30+Mileage%1000000%100000%10000%1000/100);//數字+30得到該數字的LCD1602顯示碼
                     write_1602dat(0x30+Mileage%1000000%100000%10000%1000%100/10);//數字+30得到該數字的LCD1602顯示碼
這些代碼也證明了Mileage的單位是分米。

ID:551568 · 發表于 2019-6-3 01:27

幻劍心發表于 2019-6-1 21:02
程序應該是一個里程計數器。外部應該還有霍爾之類的轉速傳感器。根據轉速傳感器得到count，然后根據車輪周 ...

哥我再問一個問題哈，有點疑惑，如果里程的單位為分米的話，那么這上面寫千米的單位不是錯了嗎

ID:551568 · 發表于 2019-6-3 01:36

幻劍心發表于 2019-6-1 21:02
程序應該是一個里程計數器。外部應該還有霍爾之類的轉速傳感器。根據轉速傳感器得到count，然后根據車輪周 ...

哥我反應過來了反應太遲鈍了

ID:56665 · 發表于 2019-6-3 08:35

合并成10進制數

ID:325337 · 發表于 2020-5-25 10:47

幻劍心發表于 2019-6-1 21:02
程序應該是一個里程計數器。外部應該還有霍爾之類的轉速傳感器。根據轉速傳感器得到count，然后根據車輪周 ...

哥，我也想問一下就是這個公式 Velocity=count*2*3.14*RADIUS/100000*3600*2/20;他后邊/100000*3600*2/20是啥意思啊？

ID:325337 · 發表于 2020-5-25 10:52

我的國兒發表于 2019-6-3 01:27
哥我再問一個問題哈，有點疑惑，如果里程的單位為分米的話，那么這上面寫千米的單位不是錯了嗎

我也想說，那個是分米的話，顯示的是千米，那不是錯了嗎…兄弟你是咋想明白的

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這個單片機程序定義沒怎么看懂，H,M,L沒懂什么意思，還有就是為什么要乘100000,100...

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