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#include <reg52.h> #define uchar unsigned char #define uint unsigned int sbit we = P2^7; sbit du = P2^6; sbit LED1=P1^0; uchar counter,time_counter,n; uchar code leddata[]={ 0x3F, //"0" 0x06, //"1" 0x5B, //"2" 0x4F, //"3" 0x66, //"4" 0x6D, //"5" 0x7D, //"6" 0x07, //"7" 0x7F, //"8" 0x6F, //"9" 0x77, //"A" 0x7C, //"B" 0x39, //"C" 0x5E, //"D" 0x79, //"E" 0x71, //"F" 0x76, //"H" 0x38, //"L" 0x37, //"n" 0x3E, //"u" 0x73, //"P" 0x5C, //"o" 0x40, //"-" 0x00, //熄滅 0x00 //自定義 }; void delay(uint z) { uint x,y; for(x = z; x > 0; x--) for(y = 114; y > 0 ; y--); } void display(uchar i) { uchar ge,shi; ge=i%10; shi=i/10; P0 = 0xff; we = 1; P0 = 0xfe;//點(diǎn)亮第一位數(shù)碼管 we = 0; du = 1; P0 = leddata[shi]; du = 0; delay(1); P0=0xff; we = 1; P0 = 0xfd;//點(diǎn)亮第二位數(shù)碼管 we = 0; du = 1; P0 = leddata[ge]; du = 0; delay(1); } void dingshi() { TMOD=0x11; //定時(shí)器0，1； 工作模式1； TH0=TH1=0x4b; TL0=TL1=0xfd; //50ms TR0=TR1=1; //啟動(dòng)定時(shí)器 0，1 ET0=ET1=1; //開定時(shí)器中斷 EA=1; //開總中斷 } void main() { dingshi(); while(1) { if(time_counter==60) time_counter=0; display(time_counter); } } /*定時(shí)器0中斷程序*/ void dingshi0() interrupt 1 { TH0=0x4b; TL0=0xfd; counter++; if(counter==4) { LED1=~LED1; counter=0; } } /*定時(shí)器1中斷程序*/ void dingshi1() interrupt 3 { TH1=0x4b; TL1=0xfd; n++; if(n==20) { n=0; time_counter++; } } |
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