ds1302时钟用1602显示为什么控制时间的加减不管用？
时间：10-02
整理：3721RD
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#include<reg52.h> //包含头文件，一般情况不需要改动，头文件包含特殊功能寄存器的定义
#include "ds1302.h"
#define uchar unsigned char
#define uint unsigned int
uchar shi,fen,miao,snum;
sbit dula=P2^6;//定义锁存使能端口 段锁存
sbit wela=P2^7;// 位锁存
sbit RS=P2^1;
sbit RW=P1^5;
sbit E=P1^6;
sbit s1=P3^2;
sbit s2=P3^3;
bit ReadTimeFlag;//定义读时间标志
//unsigned char code DuanMa[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};// 显示段码值0~9
//unsigned char code WeiMa[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};//分别对应相应的数码管点亮,即位码
uchar TempData[8]; //存储显示值的全局变量
void keyscan();
void init_timer0()
{
TMOD=0x01;
EA=1;
ET0=1;
TR0=1;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
}
void delayus(uint t)
{
while(t--);
}
void delayms(uint t)
{
while(t--)
{
delayus(245);
delayus(245);
}
}
void wri_com(uchar com)
{
RS=0;
RW=0;
E=0;
delayms(5);
E=1;
delayms(5);
P0=com;
E=0;
}
void wri_data(uchar date)
{
RS=1;
RW=0;
E=0;
delayms(5);
E=1;
delayms(5);
P0=date;
E=0;
}
void wri_sfm(uchar add,uchar date)
{
uint shi,ge;
shi=date/10;
ge=date%10;
wri_com(0x80+0x40+add);
wri_data(0x30+shi);
wri_data(0x30+ge);
}
void wri_nyr(uchar add,uchar date)
{
uint shi,ge;
shi=date/10;
ge=date%10;
wri_com(0x80+add);
wri_data(0x30+shi);
wri_data(0x30+ge);
}
void init_led()
{
RS=0;
RW=0;
dula=0;
wela=0;
E=0;
snum=0;
wri_com(0x01);//清屏
wri_com(0x06);//输入方式设置 ac增一，画面不动
wri_com(0x0c);//显示开关控制 开闪
wri_com(0x38);//功能设置，两行 5*7
wri_com(0x80);
wri_com(0x80+0x40+5);
wri_data(':');
delayms(5);
wri_com(0x80+0x40+8);
wri_data(':');
delayms(5);
wri_com(0x80+4);
wri_data(':');
delayms(5);
wri_com(0x80+7);
wri_data(':');
delayms(5);
wri_com(0x80);
wri_data('2');
wri_com(0x81);
wri_data('0');
// wri_com(0x80+12);
// wri_data()
}
/*------------------------------------------------
主函数
------------------------------------------------*/
void main ()
{
init_timer0();
init_led();
Ds1302_Init();
//Ds1302_Write_Time();
while (1) //主循环
{
keyscan();
if(ReadTimeFlag==1)
{
ReadTimeFlag=0;
Ds1302_Read_Time();
wri_sfm(3,time_buf1[4]);//时
wri_sfm(6,time_buf1[5]);//分
wri_sfm(9,time_buf1[6]);//秒
wri_nyr(2,time_buf1[1]);//年
wri_nyr(5,time_buf1[2]);//月
wri_nyr(8,time_buf1[3]);//日
}
}
}
void timer0() interrupt 1
{
uint num;
TH0=(65536-200)/256; //重新赋值 2ms
TL0=(65536-200)%256;
num++;
if(num==50) //大致100ms
{
num=0;
ReadTimeFlag=1; //读标志位置1
}
}
void keyscan()
{
s1=1;
s2=1;
Ds1302_Write_Byte(ds1302_control_add,0x00);
if(！s1)
{
delayms(2);
if(s1==0)
{ TR0=0;
snum++;
while(！s1);
/* if(snum==1)
{
// TR0=0;
wri_com(0x80+0x40+9);//秒
wri_com(0x0f);
}*/
if(snum==2)
{
wri_com(0x80+0x40+6);//分
wri_com(0x0f);
}
if(snum==3)
{
wri_com(0x80+0x40+3);//时
wri_com(0x0f);
}
if(snum==4)
{
wri_com(0x80+8);//日
wri_com(0x0f);
}
if(snum==5)
{
wri_com(0x80+5);//月
wri_com(0x0f);
}
if(snum==6)
{
wri_com(0x80+2);//年
wri_com(0x0f);
}
if(snum==7)
{
snum=0;
wri_com(0x0c);
TR0=1;
}
}
}
if(！snum)
{
if(snum==1)
{
if(s2==0)
{
delayms(5);
if(s2==0);
while(！s2);
time_buf1[6]++;
if(time_buf1[6]==60);
time_buf1[6]=0;
Ds1302_Write_Time();
}
}
if(snum==2)
{
if(！s2)
{
delayms(5);
if(s2==0);
while(！s2);
time_buf1[5]++;
if(time_buf1[5]==60);
time_buf1[5]=0;
Ds1302_Write_Time();
}
}
if(snum==3)
{
if(！s2)
{
delayms(5);
if(s2==0);
while(！s2);
time_buf1[4]++;
if(time_buf1[4]==24);
time_buf1[4]=0;
Ds1302_Write_Time();
}
}
if(snum==4)
{
if(！s2)
{
delayms(5);
if(s2==0);
while(！s2);
time_buf1[3]++;
if(time_buf1[3]==30);
time_buf1[3]=0;
Ds1302_Write_Time();
}
}
if(snum==5)
{
if(！s2)
{
delayms(5);
if(s2==0);
while(！s2);
time_buf1[2]++;
if(time_buf1[2]==12);
time_buf1[2]=0;
Ds1302_Write_Time();
}
}
if(snum==1)
{
if(！s2)
{
delayms(5);
if(s2==0);
while(s2);
time_buf1[1]++;
if(time_buf1[1]==20);
time_buf1[1]=0;
Ds1302_Write_Time();
}
}
}
}
#include "ds1302.h"
unsigned char time_buf1[8] ={20,10,6,5,12,0,0,6};//空年月日时分秒周
unsigned char time_buf[8] ; //空年月日时分秒周
/*------------------------------------------------
向DS1302写入一字节数据
------------------------------------------------*/
void Ds1302_Write_Byte(unsigned char addr, unsigned char d)
{
unsigned char i;
RST_SET;
//写入目标地址：addr
addr = addr & 0xFE; //最低位置零
for (i = 0; i < 8; i ++)
{
if (addr & 0x01)
{
IO_SET;
}
else
{
IO_CLR;
}
SCK_SET;
SCK_CLR;
addr = addr >> 1;
}
//写入数据：d
for (i = 0; i < 8; i ++)
{
if (d & 0x01)
{
IO_SET;
}
else
{
IO_CLR;
}
SCK_SET;
SCK_CLR;
d = d >> 1;
}
RST_CLR; //停止DS1302总线
}
/*------------------------------------------------
从DS1302读出一字节数据
------------------------------------------------*/
unsigned char Ds1302_Read_Byte(unsigned char addr)
{
unsigned char i;
unsigned char temp;
RST_SET;
//写入目标地址：addr
addr = addr | 0x01;//最低位置高
for (i = 0; i < 8; i ++)
{
if (addr & 0x01)
{
IO_SET;
}
else
{
IO_CLR;
}
SCK_SET;
SCK_CLR;
addr = addr >> 1;
}
//输出数据：temp
for (i = 0; i < 8; i ++)
{
temp = temp >> 1;
if (IO_R)
{
temp |= 0x80;
}
else
{
temp &= 0x7F;
}
SCK_SET;
SCK_CLR;
}
RST_CLR; //停止DS1302总线
_nop_(); //以下为DS1302复位的稳定时间
RST=0;
SCK=0;
_nop_();
SCK=1;
_nop_();
SDA=0;
_nop_();
SDA=1;
_nop_();
return temp;
}
/*------------------------------------------------
向DS1302写入时钟数据
------------------------------------------------*/
void Ds1302_Write_Time(void)
{
unsigned char i,tmp;
for(i=0;i<8;i++)
{ //BCD处理 由10进制转换成16进制
tmp=time_buf1[i]/10;
time_buf[i]=time_buf1[i]%10;
time_buf[i]=time_buf[i]+tmp*16;
}
Ds1302_Write_Byte(ds1302_control_add,0x00); //关闭写保护
Ds1302_Write_Byte(ds1302_sec_add,0x80); //暂停
// Ds1302_Write_Byte(ds1302_charger_add,0xa9); //涓流充电
Ds1302_Write_Byte(ds1302_year_add,time_buf[1]); //年
Ds1302_Write_Byte(ds1302_month_add,time_buf[2]); //月
Ds1302_Write_Byte(ds1302_date_add,time_buf[3]); //日
Ds1302_Write_Byte(ds1302_day_add,time_buf[7]); //周
Ds1302_Write_Byte(ds1302_hr_add,time_buf[4]); //时
Ds1302_Write_Byte(ds1302_min_add,time_buf[5]); //分
Ds1302_Write_Byte(ds1302_sec_add,time_buf[6]); //秒
Ds1302_Write_Byte(ds1302_day_add,time_buf[7]); //周
Ds1302_Write_Byte(ds1302_control_add,0x80); //打开写保护
}
/*------------------------------------------------
从DS1302读出时钟数据
------------------------------------------------*/
void Ds1302_Read_Time(void)
{
unsigned char i,tmp;
time_buf[1]=Ds1302_Read_Byte(ds1302_year_add); //年
time_buf[2]=Ds1302_Read_Byte(ds1302_month_add); //月
time_buf[3]=Ds1302_Read_Byte(ds1302_date_add); //日
time_buf[4]=Ds1302_Read_Byte(ds1302_hr_add); //时
time_buf[5]=Ds1302_Read_Byte(ds1302_min_add); //分
time_buf[6]=(Ds1302_Read_Byte(ds1302_sec_add))&0x7F;//秒
time_buf[7]=Ds1302_Read_Byte(ds1302_day_add); //周
for(i=0;i<8;i++)
{ //BCD处理 16进制转换成10进制
tmp=time_buf[i]/16;
time_buf1[i]=time_buf[i]%16;
time_buf1[i]=time_buf1[i]+tmp*10;
}
}
/*------------------------------------------------
DS1302初始化
------------------------------------------------*/
void Ds1302_Init(void)
{
RST_CLR; //RST脚置低
SCK_CLR; //SCK脚置低
Ds1302_Write_Byte(ds1302_sec_add,0x00);
}
#ifndef __DS1302_H__
#define __DS1302_H__
#include <reg52.h>
#include<intrins.h>
sbit SCK=P3^4;
sbit SDA=P3^6;
sbit RST=P3^5;
//复位脚
#define RST_CLR RST=0//电平置低
#define RST_SET RST=1//电平置高
//双向数据
#define IO_CLR SDA=0//电平置低
#define IO_SET SDA=1//电平置高
#define IO_R SDA //电平读取
//时钟信号
#define SCK_CLR SCK=0//时钟信号
#define SCK_SET SCK=1//电平置高
#define ds1302_sec_add 0x80 //秒数据地址
#define ds1302_min_add 0x82 //分数据地址
#define ds1302_hr_add 0x84 //时数据地址
#define ds1302_date_add 0x86 //日数据地址
#define ds1302_month_add 0x88 //月数据地址
#define ds1302_day_add 0x8a //星期数据地址
#define ds1302_year_add 0x8c //年数据地址
#define ds1302_control_add 0x8e //控制数据地址
#define ds1302_charger_add 0x90
#define ds1302_clkburst_add 0xbe
extern unsigned char time_buf1[8];//空年月日时分秒周
extern unsigned char time_buf[8] ;//空年月日时分秒周
/*------------------------------------------------
向DS1302写入一字节数据
------------------------------------------------*/
void Ds1302_Write_Byte(unsigned char addr, unsigned char d);
/*------------------------------------------------
从DS1302读出一字节数据
------------------------------------------------*/
unsigned char Ds1302_Read_Byte(unsigned char addr) ;
/*------------------------------------------------
向DS1302写入时钟数据
------------------------------------------------*/
void Ds1302_Write_Time(void) ;
/*------------------------------------------------
从DS1302读出时钟数据
------------------------------------------------*/
void Ds1302_Read_Time(void) ;
/*------------------------------------------------
DS1302初始化
------------------------------------------------*/
void Ds1302_Init(void);
#endif
#include "ds1302.h"
#define uchar unsigned char
#define uint unsigned int
uchar shi,fen,miao,snum;
sbit dula=P2^6;//定义锁存使能端口 段锁存
sbit wela=P2^7;// 位锁存
sbit RS=P2^1;
sbit RW=P1^5;
sbit E=P1^6;
sbit s1=P3^2;
sbit s2=P3^3;
bit ReadTimeFlag;//定义读时间标志
//unsigned char code DuanMa[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};// 显示段码值0~9
//unsigned char code WeiMa[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};//分别对应相应的数码管点亮,即位码
uchar TempData[8]; //存储显示值的全局变量
void keyscan();
void init_timer0()
{
TMOD=0x01;
EA=1;
ET0=1;
TR0=1;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
}
void delayus(uint t)
{
while(t--);
}
void delayms(uint t)
{
while(t--)
{
delayus(245);
delayus(245);
}
}
void wri_com(uchar com)
{
RS=0;
RW=0;
E=0;
delayms(5);
E=1;
delayms(5);
P0=com;
E=0;
}
void wri_data(uchar date)
{
RS=1;
RW=0;
E=0;
delayms(5);
E=1;
delayms(5);
P0=date;
E=0;
}
void wri_sfm(uchar add,uchar date)
{
uint shi,ge;
shi=date/10;
ge=date%10;
wri_com(0x80+0x40+add);
wri_data(0x30+shi);
wri_data(0x30+ge);
}
void wri_nyr(uchar add,uchar date)
{
uint shi,ge;
shi=date/10;
ge=date%10;
wri_com(0x80+add);
wri_data(0x30+shi);
wri_data(0x30+ge);
}
void init_led()
{
RS=0;
RW=0;
dula=0;
wela=0;
E=0;
snum=0;
wri_com(0x01);//清屏
wri_com(0x06);//输入方式设置 ac增一，画面不动
wri_com(0x0c);//显示开关控制 开闪
wri_com(0x38);//功能设置，两行 5*7
wri_com(0x80);
wri_com(0x80+0x40+5);
wri_data(':');
delayms(5);
wri_com(0x80+0x40+8);
wri_data(':');
delayms(5);
wri_com(0x80+4);
wri_data(':');
delayms(5);
wri_com(0x80+7);
wri_data(':');
delayms(5);
wri_com(0x80);
wri_data('2');
wri_com(0x81);
wri_data('0');
// wri_com(0x80+12);
// wri_data()
}
/*------------------------------------------------
主函数
------------------------------------------------*/
void main ()
{
init_timer0();
init_led();
Ds1302_Init();
//Ds1302_Write_Time();
while (1) //主循环
{
keyscan();
if(ReadTimeFlag==1)
{
ReadTimeFlag=0;
Ds1302_Read_Time();
wri_sfm(3,time_buf1[4]);//时
wri_sfm(6,time_buf1[5]);//分
wri_sfm(9,time_buf1[6]);//秒
wri_nyr(2,time_buf1[1]);//年
wri_nyr(5,time_buf1[2]);//月
wri_nyr(8,time_buf1[3]);//日
}
}
}
void timer0() interrupt 1
{
uint num;
TH0=(65536-200)/256; //重新赋值 2ms
TL0=(65536-200)%256;
num++;
if(num==50) //大致100ms
{
num=0;
ReadTimeFlag=1; //读标志位置1
}
}
void keyscan()
{
s1=1;
s2=1;
Ds1302_Write_Byte(ds1302_control_add,0x00);
if(！s1)
{
delayms(2);
if(s1==0)
{ TR0=0;
snum++;
while(！s1);
/* if(snum==1)
{
// TR0=0;
wri_com(0x80+0x40+9);//秒
wri_com(0x0f);
}*/
if(snum==2)
{
wri_com(0x80+0x40+6);//分
wri_com(0x0f);
}
if(snum==3)
{
wri_com(0x80+0x40+3);//时
wri_com(0x0f);
}
if(snum==4)
{
wri_com(0x80+8);//日
wri_com(0x0f);
}
if(snum==5)
{
wri_com(0x80+5);//月
wri_com(0x0f);
}
if(snum==6)
{
wri_com(0x80+2);//年
wri_com(0x0f);
}
if(snum==7)
{
snum=0;
wri_com(0x0c);
TR0=1;
}
}
}
if(！snum)
{
if(snum==1)
{
if(s2==0)
{
delayms(5);
if(s2==0);
while(！s2);
time_buf1[6]++;
if(time_buf1[6]==60);
time_buf1[6]=0;
Ds1302_Write_Time();
}
}
if(snum==2)
{
if(！s2)
{
delayms(5);
if(s2==0);
while(！s2);
time_buf1[5]++;
if(time_buf1[5]==60);
time_buf1[5]=0;
Ds1302_Write_Time();
}
}
if(snum==3)
{
if(！s2)
{
delayms(5);
if(s2==0);
while(！s2);
time_buf1[4]++;
if(time_buf1[4]==24);
time_buf1[4]=0;
Ds1302_Write_Time();
}
}
if(snum==4)
{
if(！s2)
{
delayms(5);
if(s2==0);
while(！s2);
time_buf1[3]++;
if(time_buf1[3]==30);
time_buf1[3]=0;
Ds1302_Write_Time();
}
}
if(snum==5)
{
if(！s2)
{
delayms(5);
if(s2==0);
while(！s2);
time_buf1[2]++;
if(time_buf1[2]==12);
time_buf1[2]=0;
Ds1302_Write_Time();
}
}
if(snum==1)
{
if(！s2)
{
delayms(5);
if(s2==0);
while(s2);
time_buf1[1]++;
if(time_buf1[1]==20);
time_buf1[1]=0;
Ds1302_Write_Time();
}
}
}
}
#include "ds1302.h"
unsigned char time_buf1[8] ={20,10,6,5,12,0,0,6};//空年月日时分秒周
unsigned char time_buf[8] ; //空年月日时分秒周
/*------------------------------------------------
向DS1302写入一字节数据
------------------------------------------------*/
void Ds1302_Write_Byte(unsigned char addr, unsigned char d)
{
unsigned char i;
RST_SET;
//写入目标地址：addr
addr = addr & 0xFE; //最低位置零
for (i = 0; i < 8; i ++)
{
if (addr & 0x01)
{
IO_SET;
}
else
{
IO_CLR;
}
SCK_SET;
SCK_CLR;
addr = addr >> 1;
}
//写入数据：d
for (i = 0; i < 8; i ++)
{
if (d & 0x01)
{
IO_SET;
}
else
{
IO_CLR;
}
SCK_SET;
SCK_CLR;
d = d >> 1;
}
RST_CLR; //停止DS1302总线
}
/*------------------------------------------------
从DS1302读出一字节数据
------------------------------------------------*/
unsigned char Ds1302_Read_Byte(unsigned char addr)
{
unsigned char i;
unsigned char temp;
RST_SET;
//写入目标地址：addr
addr = addr | 0x01;//最低位置高
for (i = 0; i < 8; i ++)
{
if (addr & 0x01)
{
IO_SET;
}
else
{
IO_CLR;
}
SCK_SET;
SCK_CLR;
addr = addr >> 1;
}
//输出数据：temp
for (i = 0; i < 8; i ++)
{
temp = temp >> 1;
if (IO_R)
{
temp |= 0x80;
}
else
{
temp &= 0x7F;
}
SCK_SET;
SCK_CLR;
}
RST_CLR; //停止DS1302总线
_nop_(); //以下为DS1302复位的稳定时间
RST=0;
SCK=0;
_nop_();
SCK=1;
_nop_();
SDA=0;
_nop_();
SDA=1;
_nop_();
return temp;
}
/*------------------------------------------------
向DS1302写入时钟数据
------------------------------------------------*/
void Ds1302_Write_Time(void)
{
unsigned char i,tmp;
for(i=0;i<8;i++)
{ //BCD处理 由10进制转换成16进制
tmp=time_buf1[i]/10;
time_buf[i]=time_buf1[i]%10;
time_buf[i]=time_buf[i]+tmp*16;
}
Ds1302_Write_Byte(ds1302_control_add,0x00); //关闭写保护
Ds1302_Write_Byte(ds1302_sec_add,0x80); //暂停
// Ds1302_Write_Byte(ds1302_charger_add,0xa9); //涓流充电
Ds1302_Write_Byte(ds1302_year_add,time_buf[1]); //年
Ds1302_Write_Byte(ds1302_month_add,time_buf[2]); //月
Ds1302_Write_Byte(ds1302_date_add,time_buf[3]); //日
Ds1302_Write_Byte(ds1302_day_add,time_buf[7]); //周
Ds1302_Write_Byte(ds1302_hr_add,time_buf[4]); //时
Ds1302_Write_Byte(ds1302_min_add,time_buf[5]); //分
Ds1302_Write_Byte(ds1302_sec_add,time_buf[6]); //秒
Ds1302_Write_Byte(ds1302_day_add,time_buf[7]); //周
Ds1302_Write_Byte(ds1302_control_add,0x80); //打开写保护
}
/*------------------------------------------------
从DS1302读出时钟数据
------------------------------------------------*/
void Ds1302_Read_Time(void)
{
unsigned char i,tmp;
time_buf[1]=Ds1302_Read_Byte(ds1302_year_add); //年
time_buf[2]=Ds1302_Read_Byte(ds1302_month_add); //月
time_buf[3]=Ds1302_Read_Byte(ds1302_date_add); //日
time_buf[4]=Ds1302_Read_Byte(ds1302_hr_add); //时
time_buf[5]=Ds1302_Read_Byte(ds1302_min_add); //分
time_buf[6]=(Ds1302_Read_Byte(ds1302_sec_add))&0x7F;//秒
time_buf[7]=Ds1302_Read_Byte(ds1302_day_add); //周
for(i=0;i<8;i++)
{ //BCD处理 16进制转换成10进制
tmp=time_buf[i]/16;
time_buf1[i]=time_buf[i]%16;
time_buf1[i]=time_buf1[i]+tmp*10;
}
}
/*------------------------------------------------
DS1302初始化
------------------------------------------------*/
void Ds1302_Init(void)
{
RST_CLR; //RST脚置低
SCK_CLR; //SCK脚置低
Ds1302_Write_Byte(ds1302_sec_add,0x00);
}
#ifndef __DS1302_H__
#define __DS1302_H__
#include <reg52.h>
#include<intrins.h>
sbit SCK=P3^4;
sbit SDA=P3^6;
sbit RST=P3^5;
//复位脚
#define RST_CLR RST=0//电平置低
#define RST_SET RST=1//电平置高
//双向数据
#define IO_CLR SDA=0//电平置低
#define IO_SET SDA=1//电平置高
#define IO_R SDA //电平读取
//时钟信号
#define SCK_CLR SCK=0//时钟信号
#define SCK_SET SCK=1//电平置高
#define ds1302_sec_add 0x80 //秒数据地址
#define ds1302_min_add 0x82 //分数据地址
#define ds1302_hr_add 0x84 //时数据地址
#define ds1302_date_add 0x86 //日数据地址
#define ds1302_month_add 0x88 //月数据地址
#define ds1302_day_add 0x8a //星期数据地址
#define ds1302_year_add 0x8c //年数据地址
#define ds1302_control_add 0x8e //控制数据地址
#define ds1302_charger_add 0x90
#define ds1302_clkburst_add 0xbe
extern unsigned char time_buf1[8];//空年月日时分秒周
extern unsigned char time_buf[8] ;//空年月日时分秒周
/*------------------------------------------------
向DS1302写入一字节数据
------------------------------------------------*/
void Ds1302_Write_Byte(unsigned char addr, unsigned char d);
/*------------------------------------------------
从DS1302读出一字节数据
------------------------------------------------*/
unsigned char Ds1302_Read_Byte(unsigned char addr) ;
/*------------------------------------------------
向DS1302写入时钟数据
------------------------------------------------*/
void Ds1302_Write_Time(void) ;
/*------------------------------------------------
从DS1302读出时钟数据
------------------------------------------------*/
void Ds1302_Read_Time(void) ;
/*------------------------------------------------
DS1302初始化
------------------------------------------------*/
void Ds1302_Init(void);
#endif
时间是可以写入的，在控制时间的加减的时候，还是需要把你所希望的数值直接写进1302的寄存器中
写得也太长了吧，很难找的
单独测试一下按键响应这块程序