请帮忙看看下面的万年历程序，为什么键盘不能用？O(∩_∩)O谢谢
#include<reg52.h>#define uint unsigned int
#define uchar unsigned char
uchar temp1,a,ri,yue,nian,week,flag,key1n,temp,key1n;
char miao,shi,fen;
#define yh 0x80 //第一行
#define er 0x80+0x40 //第二行
sbit rs=P0^0;
sbit en=P0^2;
sbit rw=P0^1; //如果硬件上rw接地，就不用写这句和后面的rw=0了
//DS1302时钟芯片引脚连接定义
sbit IO=P3^4;
sbit SCLK=P3^3;
sbit RST=P3^5;
sbit ACC0=ACC^0;
sbit ACC7=ACC^7;
//校时按键与C51的引脚连接定义
//sbit rd=P2^4;
//sbit key1=P2^0; //设置键
//sbit key2=P2^1; //加键
//sbit key3=P2^2; //减键
//sbit buzzer=P2^3; //蜂鸣器，通过三极管9012驱动，端口低电平响
/**************************************************************/
uchar code tab1[]={"2015-11-11"}; //年显示的固定字符
uchar code tab2[]={"11:11:11"}; //时间显示的固定字符
//延时函数，后面经常调用
void delay(uint xms) //延时函数，有参函数
{
uint x,y;
for(x=xms;x>0;x--)
for(y=110;y>0;y--);
}
/********液晶写入指令函数与写入数据函数，以后可调用**************/
write_1602com(uchar com) //****液晶写入指令函数****
{
P0=(P0&0x0f)|(com&0xf0);//高四位
rs=0;
rw=0;
delay(10);
en=1;
delay(10);
en=0;
com=com<<4;
P0=(P0&0x0f)|(com&0xf0);//低四位
rs=0;
rw=0;
delay(10);
en=1;
delay(10);
en=0; //en由高变低，产生下降沿，液晶执行命令
}
write_1602dat(uchar dat) //***液晶写入数据函数****
{
P0=(P0&0x0f)|(dat&0xf0);
rs=1;
rw=0;
delay(10);
en=1;
delay(10);
en=0;
dat=dat<<4;
P0=(P0&0x0f)|(dat&0xf0);
rs=1;
rw=0;
delay(10);
en=1;
delay(10);
en=0;
}
lcd_init() //***液晶初始化函数****
{
write_1602com(0x38); //设置液晶工作模式，意思：16*2行显示，5*7点阵，8位数据
write_1602com(0x0c); //开显示不显示光标
write_1602com(0x06); //整屏不移动，光标自动右移
write_1602com(0x01); //清显示
write_1602com(yh); //日历显示固定符号从第一行第1个位置之后开始显示
for(a=0;a<10;a++)
{
write_1602dat(tab1[a]); //向液晶屏写日历显示的固定符号部分
delay(5);
}
write_1602com(er); //时间显示固定符号写入位置，从第2个位置后开始显示
for(a=0;a<8;a++)
{
write_1602dat(tab2[a]); //写显示时间固定符号，两个冒号
delay(5);
}
}
/*********************over***********************/
/***************DS1302有关子函数********************/
void write_byte(uchar dat)//写一个字节
{
ACC=dat;
RST=1;
for(a=8;a>0;a--)
{
IO=ACC0;
SCLK=0;
SCLK=1;
ACC=ACC>>1;
}
}
uchar read_byte() //读一个字节
{
RST=1;
for(a=8;a>0;a--)
{
ACC7=IO;
SCLK=1;
SCLK=0;
ACC=ACC>>1;
}
return (ACC);
}
//----------------------------------------
void write_1302(uchar add,uchar dat) //向1302芯片写函数，指定写入地址，数据
{
RST=0;
SCLK=0;
RST=1;
write_byte(add);
write_byte(dat);
SCLK=1;
RST=0;
}
uchar read_1302(uchar add) //从1302读数据函数，指定读取数据来源地址
{
uchar temp;
RST=0;
SCLK=0;
RST=1;
write_byte(add);
temp=read_byte();
SCLK=1;
RST=0;
return(temp);
}
uchar BCD_Decimal(uchar bcd) //BCD码转十进制函数，输入BCD，返回十进制
{
uchar Decimal;
Decimal=bcd>>4;
return(Decimal=Decimal*10+(bcd&=0x0F));
}
//--------------------------------------
void ds1302_init() //1302芯片初始化子函数(2015-01-01,00:00:00,week4)
{
RST=0;
SCLK=0;
write_1302(0x8e,0x00); //允许写，禁止写保护
write_1302(0x80,0x50); //向DS1302内写秒寄存器80H写入初始秒数据00
write_1302(0x82,0x59); //向DS1302内写分寄存器82H写入初始分数据00
write_1302(0x84,0x23); //向DS1302内写小时寄存器84H写入初始小时数据00
write_1302(0x8a,0x01); //向DS1302内写周寄存器8aH写入初始周数据4
write_1302(0x86,0x11); //向DS1302内写日期寄存器86H写入初始日期数据01
write_1302(0x88,0x09); //向DS1302内写月份寄存器88H写入初始月份数据01
write_1302(0x8c,0x15); //向DS1302内写年份寄存器8cH写入初始年份数据15
write_1302(0x8e,0x80); //打开写保护
}
/*
//温度显示子函数
void write_temp(uchar add,uchar dat) //向LCD写温度数据,并指定显示位置
{
uchar gw,sw;
gw=dat%10; //取得个位数字
sw=dat/10; //取得十位数字
write_1602com(er+add); //er是头文件规定的值0x80+0x40
write_1602dat(0x30+sw); //数字+30得到该数字的LCD1602显示码
write_1602dat(0x30+gw); //数字+30得到该数字的LCD1602显示码
write_1602dat(0xdf); //显示温度的小圆圈符号，0xdf是液晶屏字符库的该符号地址码
write_1602dat(0x43); //显示"C"符号，0x43是液晶屏字符库里大写C的地址码
}
*/
//时分秒显示子函数
void write_sfm(uchar add,uchar dat) //向LCD写时分秒,有显示位置、显示数据，两个参数
{
uchar gw,sw;
gw=dat%10; //取得个位数字
sw=dat/10; //取得十位数字
write_1602com(er+add); //er是头文件规定的值0x80+0x40
write_1602dat(0x30+sw); //数字+30得到十位的LCD1602显示码
write_1602dat(0x30+gw); //数字+30得到个位的LCD1602显示码
}
//年月日显示子函数
void write_nyr(uchar add,uchar dat) //向LCD写年月日，有显示位置、显示数据，两个参数
{
uchar gw,sw;
gw=dat%10; //取得个位数字
sw=dat/10; //取得十位数字
write_1602com(yh+add); //设定显示位置为第一行第一个位置+add
write_1602dat(0x30+sw); //数字+30得到该数字的LCD1602显示码
write_1602dat(0x30+gw); //数字+30得到该数字的LCD1602显示码
}
void write_week(uchar week) //写星期函数
{
write_1602com(yh+0x0b); //星期字符的显示位置
switch(week)
{
case 1:write_1602dat('M'); //星期数为1时，显示
write_1602dat('O');
write_1602dat('N');
break;
case 2:write_1602dat('T'); //星期数据为2时显示
write_1602dat('U');
write_1602dat('E');
break;
case 3:write_1602dat('W'); //星期数据为3时显示
write_1602dat('E');
write_1602dat('D');
break;
case 4:write_1602dat('T'); //星期数据为4是显示
write_1602dat('H');
write_1602dat('U');
break;
case 5:write_1602dat('F'); //星期数据为5时显示
write_1602dat('R');
write_1602dat('I');
break;
case 6:write_1602dat('S'); //星期数据为6时显示
write_1602dat('T');
write_1602dat('A');
break;
case 7:write_1602dat('S'); //星期数据为7时显示
write_1602dat('U');
write_1602dat('N');
break;
}
}
//****************键盘扫描有关函数**********************
void keyscan()
{
P2=0xfe;
temp1=P2;
temp1=temp1&0xf0;
while(temp1!=0xf0)
{
delay(5);
temp1=P2;
temp1=temp1&0xf0;
while(temp1!=0xf0)
{
temp1=P2;
while(temp1!=0xf0)
{
temp1=P2;
temp1=temp1&0xf0;
}
}
if(temp1==0xee) //key1为功能键（设置键）
{
delay(10); //延时，用于消抖动
if(temp1==0xee) //延时后再次确认按键按下
{
while(temp1!=0xee);
key1n++;
if(key1n==9)
key1n=1; //设置按键共有秒、分、时、星期、日、月、年、返回，8个功能循环
switch(key1n)
{
case 1: TR0=0; //关闭定时器
write_1602com(er+7); //设置按键按动一次，秒位置显示光标
write_1602com(0x0f); //设置光标为闪烁
/* temp=(miao)/10*16+(miao)%10; //秒数据写入DS1302
write_1302(0x8e,0x00);
write_1302(0x80,0x80|temp);//miao
write_1302(0x8e,0x80); */
break;
case 2: write_1602com(er+4); //按2次fen位置显示光标
write_1602com(0x0f);
break;
case 3: write_1602com(er+1); //按动3次，shi
write_1602com(0x0f);
break;
case 4: write_1602com(yh+0x0e); //按动4次，week
write_1602com(0x0f);
break;
case 5: write_1602com(yh+0x0a); //按动5次，ri
write_1602com(0x0f);
break;
case 6: write_1602com(yh+0x07); //按动6次，yue
write_1602com(0x0f);
break;
case 7: write_1602com(yh+0x04); //按动7次，nian
write_1602com(0x0f);
break;
case 8:
write_1602com(0x0c); //按动到第8次，设置光标不闪烁
TR0=1;//打开定时器
break;
}
}
}
//------------------------------加键key2----------------------------
if(key1n!=0) //当key1按下以下。再按以下键才有效（按键次数不等于零）
{
if(temp1==0xde) //上调键
{
delay(10);
if(temp1==0xde)
{
while(temp1!=0xde);
switch(key1n)
{
case 1:miao++; //设置键按动1次，调秒
if(miao==60)
miao=0;
write_sfm(0x06,miao);
temp=(miao)/10*16+(miao)%10;//转为16进制
write_1302(0x8e,0x00);
write_1302(0x80,temp);
write_1302(0x8e,0x80);
write_1602com(er+0x07);
//write_1602com(0x0b);
break;
case 2:fen++;
if(fen==60)
fen=0;
write_sfm(0x03,fen);
temp=(fen)/10*16+(fen)%10;
write_1302(0x8e,0x00);
write_1302(0x82,temp);
write_1302(0x8e,0x80);
write_1602com(er+4);
break;
case 3:shi++;
if(shi==24)
shi=0;
write_sfm(0x00,shi);
temp=(shi)/10*16+(shi)%10;
write_1302(0x8e,0x00);
write_1302(0x84,temp);
write_1302(0x8e,0x80);
write_1602com(er+1);
break;
case 4:week++;
if(week==8)
week=1;
write_1602com(yh+0x0b) ;
write_week(week);
temp=(week)/10*16+(week)%10;
write_1302(0x8e,0x00);
write_1302(0x8a,temp);
write_1302(0x8e,0x80);
write_1602com(yh+0x0c);
break;
case 5:ri++;
if(ri==32)
ri=1;
write_nyr(8,ri);
temp=(ri)/10*16+(ri)%10;
write_1302(0x8e,0x00);
write_1302(0x86,temp);
write_1302(0x8e,0x80);
write_1602com(yh+9);
break;
case 6:yue++;
if(yue==13)
yue=1;
write_nyr(5,yue);
temp=(yue)/10*16+(yue)%10;
write_1302(0x8e,0x00);
write_1302(0x88,temp);
write_1302(0x8e,0x80);
write_1602com(yh+6);
break;
case 7:nian++;
if(nian==100)
nian=0;
write_nyr(2,nian);
temp=(nian)/10*16+(nian)%10;
write_1302(0x8e,0x00);
write_1302(0x8c,temp);
write_1302(0x8e,0x80);
write_1602com(yh+3);
break;
}
}
}
//------------------减键key3，各句功能参照'加键'注释---------------
if(temp1==0xbe)
{
delay(10); //调延时，消抖动
if(temp1==0xde)
{
while(temp1!=0xde);
switch(key1n)
{
case 1:miao--;
if(miao==-1)
miao=59;
write_sfm(0x06,miao);
temp=(miao)/10*16+(miao)%10;
write_1302(0x8e,0x00);
write_1302(0x80,temp);
write_1302(0x8e,0x80);
write_1602com(er+0x07);
//write_1602com(0x0b);
break;
case 2:fen--;
if(fen==-1)
fen=59;
write_sfm(3,fen);
temp=(fen)/10*16+(fen)%10;
write_1302(0x8e,0x00);
write_1302(0x82,temp);
write_1302(0x8e,0x80);
write_1602com(er+4);
break;
case 3:shi--;
if(shi==-1)
shi=23;
write_sfm(0,shi);
temp=(shi)/10*16+(shi)%10;
write_1302(0x8e,0x00);
write_1302(0x84,temp);
write_1302(0x8e,0x80);
write_1602com(er+1);
break;
case 4:week--;
if(week==0)
week=7;
write_1602com(yh+0x0b);
write_week(week);
temp=(week)/10*16+(week)%10;
write_1302(0x8e,0x00);
write_1302(0x8a,temp);
write_1302(0x8e,0x80);
write_1602com(yh+0x0c);
break;
case 5:ri--;
if(ri==0)
ri=31;
write_nyr(8,ri);
temp=(ri)/10*16+(ri)%10;//十进制转换成DS1302要求的DCB码
write_1302(0x8e,0x00);//允许写，禁止写保护
write_1302(0x86,temp);//向DS1302内写日期寄存器86H写入调整后的日期数据BCD码
write_1302(0x8e,0x80);//打开写保护
write_1602com(yh+9);//因为设置液晶的模式是写入数据后，指针自动加一，所以需要光标回位
break;
case 6:yue--;
if(yue==0)
yue=12;
write_nyr(5,yue);
temp=(yue)/10*16+(yue)%10;//十进制转换成DS1302要求的DCB码
write_1302(0x8e,0x00);//允许写，禁止写保护
write_1302(0x88,temp);//向DS1302内写月份寄存器88H写入调整后的月份数据BCD码
write_1302(0x8e,0x80);//打开写保护
write_1602com(yh+6);//因为设置液晶的模式是写入数据后，指针自动加一，所以需要光标回位
break;
case 7:nian--;
if(nian==-1)
nian=99;
write_nyr(2,nian);
temp=(nian)/10*16+(nian)%10;//十进制转换成DS1302要求的DCB码
write_1302(0x8e,0x00);//允许写，禁止写保护
write_1302(0x8c,temp);//向DS1302内写年份寄存器8cH写入调整后的年份数据BCD码
write_1302(0x8e,0x80);//打开写保护
write_1602com(yh+3);//因为设置液晶的模式是写入数据后，指针自动加一，所以需要光标回位
break;
}
}
}
}
}
}
void init() //定时器、计数器设置函数
{
TMOD=0x01; //指定定时/计数器的工作方式为1
TH0=(65536-100000)/256; //对T0定时器装值
TL0=(65536-100000)%256;
EA=1; //系统允许有开放的中断
ET0=1; //允许T0中断
TR0=1; //开启中断，启动定时器
}
void main()
{
lcd_init(); //调用液晶屏初始化子函数
ds1302_init(); //调用DS1302时钟的初始化子函数
init(); //调用定时计数器的设置子函数
// led=0; //打开LCD的背光电源
key1n=1;
// buzzer=0; //蜂鸣器长响一次
// delay(80);
// buzzer=1;
while(1) //无限循环下面的语句：
{
keyscan(); //调用键盘扫描子函数
}
}
void timer0() interrupt 1 //取得并显示日历和时间
{
TH0=(65536-100000)/256; //对T0定时器重装初值
TL0=(65536-100000)%256;
//it_DS18B20(); //温度传感器DS18b2初始化子函数，在头文件中
// flag=ReadTemperature(); //将18b2头文件运行返回的函数结果送到变量flag中，用于显示
//读取秒时分周日月年七个数据（DS1302的读寄存器与写寄存器不一样）：
miao = BCD_Decimal(read_1302(0x81));
fen = BCD_Decimal(read_1302(0x83));
shi = BCD_Decimal(read_1302(0x85));
ri = BCD_Decimal(read_1302(0x87));
yue = BCD_Decimal(read_1302(0x89));
nian=BCD_Decimal(read_1302(0x8d));
week=BCD_Decimal(read_1302(0x8b));
//显示温度、秒、时、分数据：
// write_temp(9,flag);//显示温度，从第二行第9个字符后开始显示
write_sfm(6,miao);//秒，从第二行第6个字后开始显示（调用时分秒显示子函数）
write_sfm(3,fen);//分，从第二行第3个字符后开始显示
write_sfm(0,shi);//小时，从第二行第1个字符后开始显示
//显示日、月、年数据：
write_nyr(8,ri);//日期，从第二行第8个字符后开始显示
write_nyr(5,yue);//月份，从第二行第5个字符后开始显示
write_nyr(2,nian);//年，从第二行第2个字符后开始显示
write_week(week);
}
