基于1302芯片的小时钟用1602显示

#include<reg52.h> #define uchar unsigned char #define uint unsigned int sbit dsio=P2^0; /*ds1302的IO口*/ sbit dssclk=P2^1;/*ds1302的时钟线*/ sbit dsres=P2^2;/*ds1302的res端口*/ sbit left=P2^3; sbit set=P2^4; sbit right=P2^5; sbit lcdrs=P2^6;/*lcd1602的res端口*/ sbit lcden=P2^7;/*lcd1602的en端口*/ sbit ACC_7=ACC^7; uchar miao0,fen0,shi0,ri0,yue0,nian0,miao1, fen1,shi1,ri1,yue1,nian1,miao,fen,shi, ri,yue,nian, i,k; void delay(uint z); void lcdinit(); void dsinit(); void xie(uchar addr,uchar byte); uchar du(uchar addr); void write_data(uchar date); void write_order(uchar order); void dsread(); void dswrite(); void lcdwrite1(); void lcdwrite2(); void int_0(); void int_1(); void init(); void yiwei(); void set1(); void set2(); void main() { dsinit(); lcdinit(); init(); while(1) { while(k==0) { write_order(0x0c); dsread(); lcdwrite1(); if(k!=0) { write_order(0x84); write_order(0x0e); break; } } while(k==1) { yiwei(); set1(); if(k!=1) { write_order(0x0c); lcdwrite2(); write_order(0x84); write_order(0x0e); break; } } while(k==2) { yiwei(); set2(); if(k!=2) break; } while(k==3) { k=0; dswrite(); break; } } } void delay(uint z)/*延时子函数*/ { uint x,y; for(x=z;x>0;x--) for(y=100;y>0;y--); } void yiwei()/*right和left按键检测功能函数*/ { if(right==0) delay(110); if(right==0) { i++; if(i==7) i=1; if(i==1) write_order(0x84); if(i==2) write_order(0x85); if(i==3) write_order(0x87); if(i==4) write_order(0x88); if(i==5) write_order(0x8a); if(i==6) write_order(0x8b); } if(left==0) delay(110); if(left==0) { i--; if(i==0) i=6; if(i==1) write_order(0x84); if(i==2) write_order(0x85); if(i==3) write_order(0x87); if(i==4) write_order(0x88); if(i==5) write_order(0x8a); if(i==6) write_order(0x8b); } } void set1()/*当前为设置时分秒状态set键功能设定*/ { if(set==0) delay(110); if(set==0) { if(i==1) { shi1++; if(shi1==2) shi0=0; if(shi1==3) shi1=0; write_order(0x84); write_data(48+shi1); write_order(0x84); } if(i==2) { shi0++; if(shi1==2 && shi0==4) shi0=0; if(shi0==10) shi0=0; write_order(0x85); write_data(48+shi0); write_order(0x85); } if(i==3) { fen1++; if(fen1==6) fen1=0; write_order(0x87); write_data(48+fen1); write_order(0x87); } if(i==4) { fen0++; if(fen0==10) fen0=0; write_order(0x88); write_data(48+fen0); write_order(0x88); } if(i==5) { miao1++; if(miao1==6) miao1=0; write_order(0x8a); write_data(48+miao1); write_order(0x8a); } if(i==6) { miao0++; if(miao0==10) miao0=0; write_order(0x8b); write_data(48+miao0); write_order(0x8b); } } } void set2()/*当前设置年月日状态set功能键的定义*/ { if(set==0) delay(110); if(set==0) { if(i==1) { nian1++; if(nian1==10) nian1=0; write_order(0x84); write_data(48+nian1); write_order(0x84); } if(i==2) { nian0++; if(nian0==10) nian0=0; write_order(0x85); write_data(48+nian0); write_order(0x85); } if(i==3) { yue1++; if(yue1==2) yue1=0; write_order(0x87); write_data(48+yue1); write_order(0x87); } if(i==4) { yue0++; if(yue1==1 && yue0==3) yue0=0; if(yue0==10) yue0=0; write_order(0x88); write_data(48+yue0); write_order(0x88); } if(i==5) { ri1++; if(ri1==4) ri1=0; write_order(0x8a); write_data(48+ri1); write_order(0x8a); } if(i==6) { ri0++; if(ri0==10) ri0=0; write_order(0x8b); write_data(48+ri0); write_order(0x8b); } } } void lcdinit()/*lcd1602初始化程序*/ { lcden=0; write_order(0x01);/*清屏幕*/ write_order(0x06);/*光标加1整屏不移动*/ write_order(0x0c);/*开显示关光标*/ write_order(0x38); write_order(0x84);/*写地址首位*/ } void dsinit()/*ds1302的初始化程序*/ { dssclk=0; dsres=0; dsres=1; xie(0x8e,0x00); dsres=0; dsres=1; xie(0x80,0x00); dsres=0; } void xie(uchar addr,uchar byte)/* 写一个字节的数据到时钟芯片*/ { uchar j; dsres=0; dssclk=0; dsres=1; for(j = 0; j < 8; ++j) { dssclk=0; dsio= 0; if(addr & 0x01) dsio=1; dssclk = 1; addr >>= 1; } for(j = 0; j < 8; ++j) { dssclk=0; dsio= 0; if(byte & 0x01) dsio= 1; dssclk = 1; byte >>= 1; } dsres=0; } void dswrite() /*向ds1302写入数据年月日时分秒*/ { uchar *p; miao=miao0+miao1*16; p=&miao; xie(0x80,*p); p=&fen; fen=fen0+fen1*16; xie(0x82,*p); p=&shi; shi=shi0+shi1*16; xie(0x84,*p); p=&ri; ri=ri0+ri1*16; xie(0x86,*p); p=&yue; yue=yue0+yue1*16; xie(0x88,*p); p=&nian; nian=nian0+nian1*16; xie(0x8c,*p); } uchar du(uchar addr) /* 读芯片返回一个字节十进制的数据 */ { uchar i; uchar dd,du,du1,du2; dsres=0; dssclk=0; dsres=1; for(i = 0; i < 8; i++) { dssclk=0; dsio=0; if(addr & 0x01) dsio= 1; dssclk = 1; addr >>= 1; } dsio=1;/*此处作为数据口读入数据拉高电平不可缺少*/ for(i = 0; i < 8; i++) { ACC=ACC>>1; dssclk=0; if(dsio==0) ACC_7=0; else ACC_7=1; dssclk=1; } dsres=0; dd=ACC; du1=dd/16; du2=dd%16; du=du1*10+du2; return du; } void dsread()/*向ds1302读取数据年月日时分秒*/ { miao=du(0x81); miao0=miao%10; miao1=miao/10; fen=du(0x83); fen0=fen%10; fen1=fen/10; shi=du(0x85); shi0=shi%10; shi1=shi/10; ri=du(0x87); ri0=ri%10; ri1=ri/10; yue=du(0x89); yue0=yue%10; yue1=yue/10; nian=du(0x8d); nian0=nian%10; nian1=nian/10; } void write_order(uchar order) /*1602写入命令函数*/ { lcdrs=0; P1=order; delay(5); lcden=1; delay(5); lcden=0; } void write_data(uchar date)/*1602写数据函数*/ { lcdrs=1; P1=date; delay(5); lcden=1; delay(5); lcden=0; } void lcdwrite1()/*1602从第五位开始写入时：分：秒信息*/ { write_order(0x84); write_data(48+shi1); write_data(48+shi0); write_data(58); write_data(48+fen1); write_data(48+fen0); write_data(58); write_data(48+miao1); write_data(48+miao0); } void lcdwrite2()/*1602从第五位开始写入年：月：日信息*/ { write_order(0x84); write_data(48+nian1); write_data(48+nian0); write_data(58); write_data(48+yue1); write_data(48+yue0); write_data(58); write_data(48+ri1); write_data(48+ri0); } void init() { EA=1; /*开启中断*/ EX0=1; IT0=0; EX1=1; IT1=0; i=1;/*变量给初值*/ k=0; right=1; left=1; set=1; xie(0x80,0x00); /*初始化时间*/ xie(0x82,0x00); xie(0x84,0x12); xie(0x86,0x01); xie(0x88,0x01); xie(0x8c,0x10); } void int_0() interrupt 0/*中断0函数作用是reset复位*/ { dsinit(); lcdinit(); init(); } void int_1() interrupt 2/*中断1函数作用是检测mode功能键*/ { k++; delay(500); }