单片机的数字时钟

最新推荐文章于 2023-01-03 11:14:43 发布

iteye_7884

最新推荐文章于 2023-01-03 11:14:43 发布

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文章标签：嵌入式

Code:

#include<reg52.h>
#include<absacc.h>
#defineunitunsignedint
#defineucharunsignedchar
/*定义字型字位口*/
#defineDIGPORTXBYTE[0x8000]
#defineWORDPORTXBYTE[0x4000]
/*定义P1口各管脚*/
sbitK0=P1^0;
sbitK1=P1^1;
sbitK2=P1^2;
sbitBEEP=P1^3;
sbitL0=P1^4;
sbitL1=P1^5;
sbitL2=P1^6;
sbitL3=P1^7;
uchardataBUFFER[2]={0,0};/*显示缓冲区(依次为低位,高位)*/
uchardataCLOCK[4]={0,0,0,0};/*存放时钟时间(依次为百分秒,秒,分和时位)*/
uchardataSECOND[2]={0,0};/*存放秒表时间(依次为百分秒,秒)*/
uchardataREVERSE[4]={0,0,0,0};/*存放倒计时时间(依次为百分秒,秒,分和时位)*/
/*定义运行状态*/
uchardataSTATE=0;
/*STATE=0,秒表*/
/*STATE=1,倒计时分调整*/
/*STATE=2,倒计时小时调整*/
/*STATE=3,倒计时运行*/
/*STATE=4or7,时钟运行*/
/*STATE=5,时钟分调整*/
/*STATE=6,时钟时调整*/
bitbdataSND=0;/*秒表START*/
bitbdataRST=0;/*秒表RESET*/
bitbdataSTP=0;/*倒计时STOP*/
/*数码管显示编码"0"－"9","A","-"*/
ucharcodeTABLE[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x40};
voiddisplay(void)
{
uchari;/*显示缓冲区首址*/
uchardelay;/*显示延时*/
uchardisp;/*显示内容*/
uchardigit;/*定义数码管显示位*/
digit=0x08;
for(i=0;i<2;i++)/*秒表,显示百分秒和秒*/
{
if(BUFFER[i]>100)disp=BUFFER[i]%10+10;
elsedisp=BUFFER[i]%10;
DIGPORT=digit;
WORDPORT=TABLE[disp];
for(delay=0;delay<=200;delay++);
digit=digit>>1;
disp=BUFFER[i]/10;
DIGPORT=digit;
WORDPORT=TABLE[disp];
for(delay=0;delay<=200;delay++);
digit=digit>>1;
}
}
voidtimer0(void)interrupt1using1
{
/*重置定时初值*/
TH0=-5000/256;
TL0=-5000%256;
/*时钟处理*/
CLOCK[0]=CLOCK[0]+1;
if((CLOCK[0]==50)&&(STATE>=4))
{
L0=!L0;
}
if(CLOCK[0]==100)
{
if(STATE>=4)L0=!L0;
CLOCK[0]=0;
CLOCK[1]=CLOCK[1]+1;
if(CLOCK[1]==60)
{
CLOCK[1]=0;
CLOCK[2]=CLOCK[2]+1;
if(CLOCK[2]==60)
{
CLOCK[2]=0;
CLOCK[3]=CLOCK[3]+1;
if(CLOCK[3]==24)
{
CLOCK[3]=0;
}
}
}
}
}
voidtimer2(void)interrupt5using3
{
TF2=0;
TH2=-5000/256;
TL2=-5000%256;
/*秒表处理*/
if(STATE==0)
{
SECOND[0]=SECOND[0]+1;
if(SECOND[0]==50)
{
L1=!L1;
}
if(SECOND[0]==100)
{
L1=!L1;
SECOND[0]=0;
SECOND[1]=SECOND[1]+1;
if(SECOND[1]==100)
{
SECOND[1]=0;
}
}
}
/*倒计时处理*/
if(STATE==3)
{
REVERSE[0]=REVERSE[0]+1;
if(REVERSE[0]==50)
{
L2=!L2;
}
if(REVERSE[0]==100)
{
L2=!L2;
REVERSE[0]=0;
REVERSE[1]=REVERSE[1]+1;
if(REVERSE[1]==60)
{
REVERSE[1]=00;
REVERSE[2]=REVERSE[2]-1;
if((REVERSE[2]==0)&&(REVERSE[3]==0))
{
TR2=0;
STP=1;
BEEP=0;
}
elseif(REVERSE[2]==0xff)
{
REVERSE[2]=59;
REVERSE[3]=REVERSE[3]-1;
}
}
}
}
}
voidintsvr1(void)interrupt2using2
{
if(STATE==5)
{
CLOCK[2]=CLOCK[2]+1;
if(CLOCK[2]==60)CLOCK[2]=0;
}
if(STATE==6)
{
CLOCK[3]=CLOCK[3]+1;
if(CLOCK[3]==24)CLOCK[3]=0;
}
}
voidtimer1(void)interrupt3using3
{
if(STATE==0)
{
if(RST)
{
SECOND[0]=0;
SECOND[1]=0;
L1=1;
RST=0;
}
else
{
if(SND)TR2=1;
else
{
L1=1;
TR2=0;
RST=1;
}
SND=!SND;
}
}
elseif(STATE==1)
{
REVERSE[2]=REVERSE[2]+1;
if(REVERSE[2]==60)REVERSE[2]=0;
}
elseif(STATE==2)
{
REVERSE[3]=REVERSE[3]+1;
if(REVERSE[3]==24)REVERSE[3]=0;
}
else
{
if(STP)
{
BEEP=1;
L2=1;
STP=0;
}
elseTR2=0;
}
}
voidmain(void)
{
ucharstabak;/*上一次程序运行的状态*/
P1=0x0f;
EA=1;IT1=1;ET0=1;
TMOD=0x61;/*T1方式2计数，T0方式1计时*/
TH0=-5000/256;TL0=-5000%256;
TH1=0xff;TL1=0xff;
T2CON=0;TH2=-5000/256;TL2=-5000%256;
K0=1;K1=1;K2=1;
STATE=P1&0x07;
stabak=STATE;
for(;;)
{
switch(STATE)
{
case0:/*STATE=0,秒表*/
{
EX1=0;ET1=1;ET2=1;TR1=1;SND=1;
L1=1;L0=0;L2=0;
SECOND[0]=0;
SECOND[1]=0;
}break;
case1:/*STATE=1,倒计时分调整*/
{
EX1=0;ET1=1;ET2=1;TR1=1;TR2=0;
L2=1;L0=0;L1=0;
REVERSE[0]=0;
REVERSE[1]=0;
}break;
case2:/*STATE=2,倒计时小时调整*/
{
EX1=0;ET1=1;ET2=1;TR1=1;TR2=0;
L2=1;L0=0;L1=0;
REVERSE[0]=0;
REVERSE[1]=0;
}break;
case3:/*STATE=3,倒计时运行*/
{
EX1=0;ET1=1;ET2=1;TR1=1;
if((REVERSE[2]==0)&&(REVERSE[3]==0))L2=1;
elseTR2=1;
L0=0;L1=0;
}break;
case5:/*STATE=5,时钟分调整*/
{
IE1=0;EX1=1;ET1=0;ET2=1;TR0=0;
L0=1;L1=0;L2=0;
}break;
case6:/*STATE=6,时钟时调整*/
{
IE1=0;EX1=1;ET1=0;ET2=1;TR0=0;
L0=1;L1=0;L2=0;
}break;
default:/*STATE=4or7,时钟运行*/
{
EX1=0;ET1=0;ET2=1;TR0=1;
L1=0;L2=0;
}
}
while(STATE==stabak)
{
switch(STATE)
{
case0:/*STATE=0,秒表*/
{
BUFFER[0]=SECOND[0];
BUFFER[1]=SECOND[1];
}break;
case1:/*STATE=1,倒计时分调整*/
{
BUFFER[0]=REVERSE[2];
BUFFER[1]=101;/*A-*/
}break;
case2:/*STATE=2,倒计时小时调整*/
{
BUFFER[0]=110;/*-A*/
BUFFER[1]=REVERSE[3];
}break;
case3:/*STATE=3,倒计时运行*/
{
BUFFER[0]=REVERSE[2];
BUFFER[1]=REVERSE[3];
}break;
case5:/*STATE=5,时钟分调整*/
{
BUFFER[0]=CLOCK[2];
BUFFER[1]=101;/*A-*/
}break;
case6:/*STATE=6,时钟时调整*/
{
BUFFER[0]=110;/*-A*/
BUFFER[1]=CLOCK[3];
}break;
default:/*STATE=4or7,时钟运行*/
{
BUFFER[0]=CLOCK[2];
BUFFER[1]=CLOCK[3];
}
}
display();
K0=1;K1=1;K2=1;
STATE=P1&0x07;
}
stabak=STATE;
}
}