單片機源程序如下:
- #include<reg52.h>
- #include<intrins.h>
- typedef unsigned char uchar;
- typedef unsigned int uint;
- #define date P0
- #define count 50000
- #define TH_0 (65536-count)/256
- #define TL_0 (65536-count)%256
- sbit ds=P0^1;
- sbit sh_cp=P0^0;
- sbit st_cp=P0^2;
- uchar diss[8];
- uchar code distab[17] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
- 0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x40};
- uint sec=0,min=0,hour=0;
- void delay(uint iii)
- {
- while(iii--);
- }
- void hc595(uchar dat)
- {
- uchar i;
- for(i=0;i<8;i++)
- {
- sh_cp=0;
- _nop_();
- _nop_();
-
- ds=dat>>7;
- dat=dat<<1;
-
- sh_cp=1;
- _nop_();
- _nop_();
- }
- }
- void ds_dat_txd()//鎖存發送
- {
- st_cp=0;
- _nop_();
- _nop_();
- st_cp=1;
- _nop_();
- _nop_();
- }
- void display()
- {
- uchar i=0,dat=0;
- for(dat=0xfe;dat!=0xff;dat=dat<<1|0x01)
- {
- hc595(dat);//先發送位碼
- hc595(distab[diss[i++]]);//段碼，
- ds_dat_txd(); //發送
- if(i==8)i=0;
- delay(100);
- hc595(0x00); //消隱
- ds_dat_txd();
- }
- }
- void disss()
- {
- diss[0]=hour/10;
- diss[1]=hour%10;
- diss[2]=16;
- diss[3]=min/10;
- diss[4]=min%10;
- diss[5]=16;
- diss[6]=sec/10;
- diss[7]=sec%10;
- }
- void timer0_init()
- {
- TMOD=0x01;
- EA=1;ET0=1;TR0=1;
- TH0=TH_0;TL0=TL_0;
- }
- void main()
- {
- timer0_init();
- while(1)
- {
- display();
- disss();
- }
- }
- void timer0() interrupt 1
- {
- static uchar j;
- TH0=TH_0;TL0=TL_0;
- if(++j==20)
- {
- j=0;
- sec++;
- if(sec==60)
- {
- sec=0;
- min++;
- if(min==60)
- {
- min=0;
- hour++;
- if(hour==24)
- {
- hour=0;
- }
- }
- }
- }
- }
所有資料51hei提供下載:
三個IO控制八位數碼管.zip
(127.8 KB, 下載次數: 68)
2020-3-9 21:12 上傳
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