51單片機計時器0-9999
proteus仿真原理圖:
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2017-5-9 23:07 上傳
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2017-5-9 23:06 上傳
單片機源碼:
- #include<reg51.h>
- #define uchar unsigned char
- #define uint unsigned int
- uchar table[]={
- 0x3f,0x06,0x5b,0x4f,
- 0x66,0x6d,0x7d,0x07,
- 0x7f,0x6f,0x77,0x7c,
- 0x39,0x5e,0x79,0x71
- };
- uint i=0, cnt = 9998;
- void IntConfiguration();
- void TimeConfig();
- void display(uint,uint,uint,uint);
- void delay(int);
- void main()
- {
- IP = 0x04;
- IntConfiguration();
- TimeConfig();
- while(1)
- {
- display(cnt/1000,(cnt%1000)/100,((cnt%1000)%100)/10,((cnt%1000)%100)%10);
- }
- }
- void display(uint a,uint b,uint c,uint d)
- {
- P2=0x0e;
- P0=table[a];
- delay(1);
- P2=0x0d;
- P0=table[b];
- delay(1);
- P2=0x0b;
- P0=table[c];
- delay(1);
- P2=0x07;
- P0=table[d];
- delay(1);
- }
- void delay(int z)
- {
- uint x,y;
- for(x=z;x>0;x--)
- for(y=110;y>0;y--);
- }
- void IntConfiguration()
- {
- IT0=0;
- EX0=1;
- IT1=0;
- EX1=1;
- EA=1;
- }
- void TimeConfig()
- {
- // TMOD = 0x10;
- // TH1 = (65536-10000)/256;
- // TL1 = (65536-10000)%256;
- TMOD = 0x01;
- TH0 = (65536-10000)/256;
- TL0 = (65536-10000)%256;
- EA = 1;
- // ET1 = 1;
- // TR1 = 1;
- ET0 = 1;
- TR0 = 1;
- }
- void Int0() interrupt 0
- {
- cnt = 0;
- }
- void Int1() interrupt 2
- {
- cnt = 1111;
- }
- void mytimer() interrupt 1
- {
- uint flag = 0;
- // TH1 = (65536-10000)/256;
- // TL1 = (65536-10000)%256;
- TH0 = (65536-10000)/256;
- TL0 = (65536-10000)%256;
- i++;
- if(i >= 100)
- {
- i = 0;
- …………限于本文篇幅 余下代碼請從51黑下載附件…………
復制代碼
全部資料下載:
計時器.rar
(60.13 KB, 下載次數: 100)
2017-5-9 20:24 上傳
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