clock_change.rar_51 Development Board_51可调时钟_串口调时

#include <reg51.h> #define BYTE unsigned char sbit sw4=P2^6; sbit sw3=P2^5; sbit sw2=P2^4; sbit a=P1^0; sbit P3_3=P3^3; sbit P3_2=P3^2; unsigned int sec=0,min=0,hour=0,t=0; code unsigned char dis_code[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90} ;//0--9段码表 BYTE led8[6] ; void delay(unsigned int DelayTime) { unsigned int j=0; for( ;DelayTime>0;DelayTime--) {for(j=0;j<2;j++) {;} } } void display_led(void) {P2=0xfb ; P0=dis_code[led8[0]]; delay(10); P2=0xf7 ; P0=dis_code[led8[1]]; delay(10); P2=0xef ; P0=dis_code[led8[2]]; delay(10); P2=0xdf ; P0=dis_code[led8[3]]; delay(10); P2=0xbf ; P0=dis_code[led8[4]]; delay(10); P2=0x7f; P0=dis_code[led8[5]]; delay(10); } void intt0(void)interrupt 0 using 2 { EA=0; if(sw2==0) {delay(6000) ; if(sw2==0) while(sw2==0) ; {if(sw2==1) { sec++; if(sec==60) {sec=0; sw2=1; } } } } if(sw3==0) {delay(6000) ; if(sw3==0) while(sw3==0) ; {if(sw3==1) { min++; if(min==60) {min=0; sw3=1; } } } } if(sw4==0) {delay(6000) ; if(sw4==0) while(sw4==0) ; {if(sw4==1) { hour++; if(hour==24) {hour=0; sw4=1; } } } } EA=1; } void time1(void)interrupt 1 using 1 //定时器0,每秒sec加1 { t++; TH0=0x3c; TL0=0xb0; if(t==20) { sec++; t=0; } } //秒,分,时循环;对数码管每位赋值;并把八段码送给P0口_______________________ void time_change() { unsigned int p; if(sec==60) {sec=0; min++; if(min==60) {min=0; hour++; if(hour==24) hour=0; } } ET0=0; led8[5]=hour/10; led8[4]=hour%10; led8[3]=min/10; led8[2]=min%10; led8[1]=sec/10; led8[0]=sec%10; ET0=1; for(p=0;p<3;p++) display_led(); } void set(bit sw) //检测按键子程序 {if(sw==0) { P3_3=0; P3_2=0; } if(sw==1) { P3_3=0; P3_2=1; } } void time_set() //检测按键 { set(sw2); set(sw3); set(sw4); } void initial() //处初始化 {EA=1; ET0=1; IT0=1; EX0=1; IP=0x01; TMOD=0x01; TH0=0x3c; TL0=0xb0; TR0=1; P0=0xff; P1=0xff; P2=0xff; P3_3=1; } main() {initial(); while(1) { time_change(); time_set(); } }