利用单片机的数码管模拟时钟的显示时间
Posted 风尘璞
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#include <reg52.h>
#define SEGPORT P0
sbit seg_select = P2^1;
sbit bit_select = P2^0;
unsigned char duanma[10] = 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;
unsigned char weima[8] = 0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f;
unsigned char TempData[8];
unsigned char shi = 20, fen = 54, miao = 55;
void display()
static unsigned char i = 0;
SEGPORT = 0x0;
seg_select = 1;
seg_select = 0;
SEGPORT = 0xff;
bit_select = 1;
bit_select = 0;
SEGPORT = TempData[i];
seg_select = 1;
seg_select = 0;
SEGPORT = weima[i];
bit_select = 1;
bit_select = 0;
i++;
if(8 == i)
i = 0;
void time0_init(void)
EA = 1; //打开总中断
TMOD |= 0x01; //设置定时器工作方式
TH0 = (65536 - 20000) / 256;
TL0 = (65536 - 20000) % 256; //设置定时器初值
ET0 = 1; //打开定时器中断
TR0 = 1;
void timer0_isr() interrupt 1
static unsigned char i = 0;
TH0 = (65536 - 20000) / 256;
TL0 = (65536 - 20000) % 256; //设置定时器初值,
i++;
if(50 == i)
i = 0;
miao++;
if(60 == miao)
miao = 0;
fen++;
if(60 == fen)
fen = 0;
shi++;
if(24 == shi)
shi = 0;
TempData[0] = duanma[shi / 10];
TempData[1] = duanma[shi % 10];
TempData[2] = 0x40;
TempData[3] = duanma[fen / 10];
TempData[4] = duanma[fen % 10];
TempData[5] = 0x40;
TempData[6] = duanma[miao / 10];
TempData[7] = duanma[miao % 10];
void time1_init(void)
EA = 1;
TMOD |= 0x10;
TH1 = (65536 - 20000) / 256;
TL1 = (65536 - 20000) % 256;
ET1 = 1;
TR1 = 1;
void time1_isr() interrupt 3
TH1 = (65536 - 1000) / 256;
TL1 = (65536 - 1000) % 256;
display();
void main()
time0_init();
time1_init();
while(1)
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