一個單片機實現1602屏顯示萬年歷同時數碼管顯示溫度

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ID:140725 發表于 2016-12-2 01:37 | 只看該作者 |只看大圖回帖獎勵

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只用一個51單片機實現2個屏同時顯示，下面是仿真原理圖：

下面是源程序：

#include <reg52.h>
#include <stdio.h>
sbit beep=P1^6;
sbit led=P1^5;
sbit rs=P3^6;
sbit rw=P3^5;
sbit e=P3^7;
unsigned char code screen[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x83,0xf8,0x80,0x98,0xbf,0x86,0xaf,0xa3}; //0~9,'-','E','r'
unsigned char wei[5]={0xbf,0xbf,0xbf,0xbf};
unsigned char yy,mm,dd,h,m,s,*chp;
void Flash_Scr(unsigned int times);
void DS_Init();
void DS_StartTrans();
unsigned int DS_GetTemp();
/****LCDPin assignment*****/
#define LCD_DATAPORT P0
#define LCD_Delay 200
void LCD_Cmd(unsigned char);
void LCD_Data(unsigned char);
void LCD_SetCursor(unsigned char,unsigned char);
void LCD_Init(void);
void LCD_Printf(const char string[]);
void UpdateSCR(void);
void IncTime(void);
unsigned short MaxDay(void);
enum
{
Cursor_on = 0x0e,
Cursor_off = 0x0c,
Cursor_Shake = 0x0f
}LCDCMD;
enum{
Firstline,
Secondline
}LCD_Currentline=Firstline;
void Timer0Init(void) //50ms@12.000MHz
{
TMOD = 0x11;
TL0 = 0xB0;
TH0 = 0x3C;
TF0 = 0;
TR0 = 1;
TR1 = 1;
ET0=1;
ET1=1;
EA=1;
}
unsigned short MaxV,MinV;
unsigned char Mod=0;
unsigned char code CsP[2][6]={{0,0,0,1,1,1},{6,9,12,5,8,11}};
void AdjustNum(bit inc)
{
if(Mod!=0)
{
if(inc==1)
{
if(*chp<MaxV)
{
(*chp)++;
}
else
{
*chp=MinV;
}
}
else
{
if(*chp>MinV)
{
(*chp)--;
}
else
{
*chp=MaxV;
}
}
}
if(dd>MaxDay())
{
dd=MaxDay();
}
UpdateSCR();
LCD_SetCursor(CsP[0][Mod-1],CsP[1][Mod-1]);
}
void ChangeMode(void)
{
MinV=0;
switch(Mod)
{
case 0:
{
TR0=0;
LCD_Cmd(Cursor_Shake);
MaxV=255;
MinV=0;
chp=&yy;
break;
}
case 1:MaxV=12;MinV=1;chp=&mm;break;
case 2:MaxV=MaxDay();MinV=1;chp=ⅆbreak;
case 3:MaxV=23;chp=&h;break;
case 4:MaxV=59;chp=&m;break;
case 5:MaxV=59;chp=&s;break;
default:Mod=0;TR0=1;LCD_Cmd(Cursor_off);
}
if(dd>MaxDay())
{
dd=MaxDay();
UpdateSCR();
}
LCD_SetCursor(CsP[0][Mod],CsP[1][Mod]);
Mod++;
}
sbit KM=P1^1;
sbit KP=P1^0;
sbit KN=P1^2;
void main(void)
{
LCD_Init();
LCD_SetCursor(0,0);
LCD_Cmd(Cursor_off);
yy=46;
mm=11;
dd=30;
h=12;
m=23;
s=0;
DS_Init();
DS_StartTrans();
UpdateSCR();
Timer0Init();
while(1)
{
while((P1&0x07)==0x07)
{
Flash_Scr(1);
}
if(KM==0)
{
ChangeMode();
}
if(KP==0)
{
AdjustNum(1);
}
if(KN==0)
{
AdjustNum(0);
}
while((P1&0x07)!=0x07)
{
Flash_Scr(1);
}
}
}
void Timer(void) interrupt 1
{
static unsigned char div=0;
TL0 = 0xB0;
TH0 = 0x3C;
if(div<19)
{
div++;
}
else
{
div=0;
IncTime();
UpdateSCR();
}
}
void DSTimer(void) interrupt 3
{
static unsigned char div=0;
unsigned short temp;
if(div<19)
{
div++;
}
else
{
temp=DS_GetTemp();
if(((temp>>4)>35)||((temp>>4)<20))
{
beep=0;
}
else
{
beep=1;
}
if((temp&0x1000)!=0)
{
wei[3]=screen[10];
temp=(~temp)+1;
div=0;
}
else
{
div=1;
wei[3]=0xff;
wei[0]=screen[((int)((temp%0x10)*6.25)%10)];
}
wei[div++]=screen[((int)((temp%0x10)*0.625))];
temp>>=4;
wei[div++]=screen[temp%10]-0x80;
if((temp/=10)!=0)
{
wei[div++]=screen[temp%10];
if((temp/=10)!=0)
wei[div]=screen[temp];
}
else
wei[div]=0xff;
div=0;
DS_StartTrans();
}
if(div<10)
{
led=1;
}
else
{
led=beep;
}
}
unsigned short MaxDay(void)
{
unsigned short ym;
switch(mm)
{
case 4:
case 6:
case 9:
case 11:
return 30;
case 2:
{
ym=yy+1970;
if(ym%100==0)
{
if(ym%400==0)
{
return 29;
}
return 28;
}
else
{
if(ym%4==0)
{
return 29;
}
return 28;
}
}
default: return 31;
}
}
void IncTime(void)
{
if(s<59)
{
s++;
}
else
{
s=0;
if(m<59)
{
m++;
}
else
{
m=0;
if(h<23)
{
h++;
}
else
{
h=0;
if(dd<MaxDay())
{
dd++;
}
else
{
dd=0;
if(mm<12)
{
mm++;
}
else
{
mm=0;
yy++;
}
}
}
}
}
}
void UpdateSCR(void)
{
char GRAM[11];
char *buf=GRAM;
unsigned short ym=yy+1970;
buf+=sprintf(buf,"%04d-",ym);
buf+=sprintf(buf,"%02d-",(unsigned short)mm);
buf+=sprintf(buf,"%02d",(unsigned short)dd);
LCD_SetCursor(0,3);
LCD_Printf(GRAM);
buf=GRAM;
buf+=sprintf(buf,"%02d:",(unsigned short)h);
buf+=sprintf(buf,"%02d:",(unsigned short)m);
buf+=sprintf(buf,"%02d",(unsigned short)s);
LCD_SetCursor(1,4);
LCD_Printf(GRAM);
}
void LCD_Data(unsigned char dat)
{
unsigned char etime;
e=0;
rw=0;
rs=1;
LCD_DATAPORT=dat;
e=1;
etime=LCD_Delay;
while(etime--);
e=0;
}
void LCD_Cmd(unsigned char cmd)
{
unsigned etime;
e=0;
rw=0;
rs=0;
LCD_DATAPORT=cmd;
e=1;
etime=LCD_Delay;
while(etime--);
e=0;
etime=170;
while(etime--);
}
void LCD_Init()
{
LCD_Cmd(0x38);
LCD_Cmd(0x38);
LCD_Cmd(0x38);
LCD_Cmd(0x38);
LCD_Cmd(0x08);
LCD_Cmd(0x01);
LCD_Cmd(0x06);
LCD_Cmd(0x0f);
}
void LCD_SetCursor(unsigned char Line,unsigned char Pos)
{
if(Line==0)
LCD_Cmd(0x80+Pos),LCD_Currentline=Firstline;
else if(Line==1)
LCD_Cmd(0xc0+Pos),LCD_Currentline=Secondline;
}
void LCD_Printf(const char *string)
{
int i=0;
while(string[i]!='\0')
{
if(string[i]=='\n')
{
if(LCD_Currentline==Firstline)
LCD_Cmd(0xc0);
else
LCD_Cmd(0x80);
}
else
LCD_Data(string[i]);
i++;
}
}
/**************************DS18B20********************/
void Flash_Scr(unsigned int times)
{
unsigned short i,a;
while(times--!=0)
for(i=0;i<4;i++) //???????
{
P2=wei[3-i];
P3|=(0x01<<i);
a=100;
while(a--);
P3&=0xf0;
}
}
void wait_us(unsigned char us)
{
us/=7;
while(us--);
}
sbit ds=P1^7;
void DS_Init()
{
unsigned char i;
ds=0;
wait_us(250);
wait_us(250);
wait_us(250);
ds=1;
i=100;
while(!ds);
wait_us(480);
}
unsigned char DS_ReadByte()
{
unsigned char i;
unsigned char dat=0;
ds=1;
wait_us(2);
for(i=0;i<8;i++)
{
ds=0;
wait_us(1);
ds=1;
wait_us(3);
if(ds==1)
dat=0x80|(dat>>1);
else
dat=0x7f&(dat>>1);
wait_us(30);
}
return dat;
}
void DS_WriteByte(unsigned char dat)
{
unsigned char i;
ds=1;
for(i=0;i<8;i++)
{
ds=0;
wait_us(5);
ds=dat&0x01;
wait_us(10);
ds=1;
dat>>=1;
wait_us(5);
}
}
void DS_StartTrans()
{
DS_Init();
DS_WriteByte(0xcc);
DS_WriteByte(0x44);
}
unsigned int DS_GetTemp()
{
unsigned int val=0;
DS_Init();
DS_WriteByte(0xcc);
DS_WriteByte(0xbe);
val=DS_ReadByte();
val|=DS_ReadByte()*0x100;
return val;
}