基于51单片机的闹钟设计

#include<reg51.h> #include"lcd.h" #include"intrins.h" #define uchar unsigned char #define uint unsigned int #define put_start 3 #define put_stop 4 void delay170us(void); void delay20ms(void); void InitTimer0(void); void beep(void); void disply_init(void); int key_scan(void); //--定义全局变量--// unsigned char table1[]="set time:00M-00s"; unsigned char table2[]="rea time:"; unsigned char table0[]="0123456789"; //unsigned int sec=0;//秒 //unsigned int min=0;//分 unsigned int fors=0; //unsigned int bep=0; sbit bee=P3^7; //????? sbit sec_add=P1^1; sbit sec_sub=P1^2; sbit min_add=P1^3; sbit min_sub=P1^4; sbit stop=P1^5; sbit start=P1^6; int sec_tar=0; int min_tar=0; unsigned int value=1; unsigned char flag=0; void main(void) {//1602 第一行80 第二行C0 LcdInit(); InitTimer0(); disply_init(); while(1) { if((sec_tar==0)&&(min_tar==0)&&(flag==1)) { beep(); if(flag==1) { EA=0; flag=0; } } value=key_scan(); if(value==put_start) { EA=1; /*将显示移到下一行*/ LcdWriteCom(0xC0); flag=1; //********************为了显示set time*****************************/ /***********显示分***********/ LcdWriteCom(0x89); LcdWriteData(table0[min_tar/10]); LcdWriteCom(0x8a); LcdWriteData(table0[min_tar%10]); /************** **显示M****************/ LcdWriteCom(0x8b); LcdWriteData(table1[11]); /******************显示 - *********************/ LcdWriteCom(0x8c); LcdWriteData(table1[12]); /*************显示秒*********/ LcdWriteCom(0x8d); LcdWriteData(table0[sec_tar/10]); LcdWriteCom(0x8e); LcdWriteData(table0[sec_tar%10]); /************** ****显示S**************/ LcdWriteCom(0x8F); LcdWriteData(table1[15]); /************** ****************/ /*****************************************************/ } if(value==put_stop) { EA=0; /*编辑上一行的时间*/ } /***********显示分***********/ LcdWriteCom(0xC9); LcdWriteData(table0[min_tar/10]); LcdWriteCom(0xCa); LcdWriteData(table0[min_tar%10]); /************** **显示M****************/ LcdWriteCom(0xCb); LcdWriteData(table1[11]); /******************显示 - *********************/ LcdWriteCom(0xCc); LcdWriteData(table1[12]); /*************显示秒*********/ LcdWriteCom(0xCd); LcdWriteData(table0[sec_tar/10]); LcdWriteCom(0xCe); LcdWriteData(table0[sec_tar%10]); /************** ****显示S**************/ LcdWriteCom(0xCF); LcdWriteData(table1[15]); /************** ****************/ } } int key_scan(void)//按键扫描与定时时间设置 { /*****************************************/ if(start==0)// { delay20ms(); if(start==0) { return put_start; } } /*****************************************/ if(stop==0)// { delay20ms(); if(stop==0) { return put_stop; } } /*****************************************/ if(sec_add==0) { delay20ms(); if(sec_add==0) { sec_tar++; } } /*****************************************/ if(sec_sub==0) { delay20ms(); if(sec_sub==0) { if(sec_tar==0) { sec_tar=0; } else sec_tar--; } } /*****************************************/ if(min_add==0) { delay20ms(); if(min_add==0) { min_tar++; } } /*****************************************/ if(min_add==0) { delay20ms(); if(min_sub==0) { if(min_tar==0) { min_tar=0; } else min_tar--; } } } void Timer0Interrupt(void) interrupt 1 { TH0 = 0x0FF; TL0 = 0x38; //add your code here! fors++; if(fors==5000)//1s { fors=0; if(sec_tar==0) { if(min_tar==0) { min_tar=0; sec_tar=0; } else { min_tar--; sec_tar=60; } } else sec_tar=sec_tar-1; } } void disply_init(void) { unsigned char ai; for(ai=0; ai<16; ai++) { LcdWriteData(table1[ai]); } LcdWriteCom(0xC0); for(ai=0; ai<9; ai++) { LcdWriteData(table2[ai]); } } void InitTimer0(void)//定时器0初始化 { TMOD = 0x01; TH0 = 0x0FF; TL0 = 0x38; EA = 0; ET0 = 1; TR0 = 1; } void delay20ms(void) //?? 0us { unsigned char a,b,c; for(c=2;c>0;c--) for(b=95;b>0;b--) for(a=209;a>0;a--); _nop_(); //if Keil,require use intrins.h } void beep(void)//蜂鸣器响 { uint i=0; for(;i<1500;i++)//响0.5s { delay170us(); bee=1; delay170us(); bee=0; } } void delay170us(void) { unsigned char a,b; for(b=1;b>0;b--) for(a=82;a>0;a--); }