为什么闹钟响了之后秒数不会转动而且时间有时快有时慢?附单片机程序

ID:924233 · 发表于 2021-6-21 21:55

能不能帮我看一下,先谢谢
单片机源程序如下:

#include<reg51.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
#define LCD1602_DB P0 //定义1602的DB口为P0口
uchar code table[]="CurrentTime"; //当前时间
uchar code table1[]="00:00:00";
uchar key1Flag = 0;//定义按键关闭符
uchar key2Flag = 0;
uchar key3Flag = 0;
uchar key4Flag = 0;
uchar count = 0;
uchar sec = 57;//秒
uchar min = 59;//分
uchar hour = 9;//小时
uchar clockHour = 0;//闹钟小时
uchar clockMin = 0;//分
uchar clockFlag = 0;// 定义闹钟关闭符
uchar beepNum = 0;//声音
uchar temp=0;
uchar shijian=0;
sbit LCD1602_RS = P2^0; //指令1/数据0选择端
sbit LCD1602_RW = P2^1; //读1写0选择端
sbit LCD1602_E = P2^2; //读1写0使能端
sbit Key1 = P1^0;//定义键位符
sbit Key2 = P1^1;
sbit Key3 = P1^2;
sbit Key4 = P1^3;
sbit Speaker = P2^5;//定义蜂鸣器
sbit LED=P2^4;
void Delay1ms() //@12.000MHz
{
uchar i, j;
i = 12;
j = 169;
do
{
while (--j);
} while (--i);
}
void Delay20ms() //@12.000MHz
{
uchar i, j, k;
_nop_();
_nop_();
i = 1;
j = 234;
k = 113;
do
{
do
{
while (--k);
} while (--j);
} while (--i);
}
void delay()
{
unsigned int a;
while(a--);
}
void Beep() //蜂鸣器警报
{
Speaker = 0;
Delay20ms();
Speaker = 1;
}
void LcdWaitReady() //检查LCD忙函数
{
uchar sta;
LCD1602_DB = 0xFF;
LCD1602_RS = 0;
LCD1602_RW = 1;
do {
LCD1602_E = 1;
sta = LCD1602_DB;
LCD1602_E = 0;
}while(sta & 0x80);
}
void LcdWriteCmd(uchar cmd) //写命令函数
{
LcdWaitReady();
LCD1602_RS = 0;
LCD1602_RW = 0;
LCD1602_DB = cmd;
LCD1602_E = 1;
LCD1602_E = 0;
}
void LcdWriteDat(uchar dat) //写数据函数
{
LcdWaitReady();
LCD1602_RS = 1;
LCD1602_RW = 0;
LCD1602_DB = dat;
LCD1602_E = 1;
LCD1602_E = 0;
}
void LcdSetCursor(uchar x, uchar y)//时间设置
{
uchar addr;
if(y == 0)
addr = 0x00 + x;
else
addr = 0x40 + x;
LcdWriteCmd(addr | 0x80);
}
void LcdShowStr(uchar x, uchar y, uchar *str)
{
LcdSetCursor(x, y);
while(*str != '\0')
{
LcdWriteDat(*str++);
}
}
void InitLcd1602()//初始化LCD函数
{
LcdWriteCmd(0x01);
LcdWriteCmd(0x38);
LcdWriteCmd(0x0c);
LcdWriteCmd(0x06);
}
void WriteAddress(uchar x)
{
LcdWriteCmd(0x80 + x);
}
void DisplayMinTens() //显示分十位
{
WriteAddress(0x49);
LcdWriteDat((min / 10) + '0');
Delay1ms();
}
void DisplayMinUnits() //显示分个位
{
WriteAddress(0x4A);
LcdWriteDat((min % 10) + '0');
Delay1ms();
}
void DisplayHourTens() //显示时十位
{
WriteAddress(0x46);
LcdWriteDat((hour / 10) + '0');
Delay1ms();
}
void DisplayHourUnits()//显示时个位
{
WriteAddress(0x47);
LcdWriteDat((hour % 10) + '0');
Delay1ms();
}
void DisplayClkMinTens() //显示闹钟分十位
{
WriteAddress(0x49);
LcdWriteDat((clockMin / 10) + '0');
Delay1ms();
}
void DisplayClkMinUnits() //显示闹钟分个位
{
WriteAddress(0x4A);
LcdWriteDat((clockMin % 10) + '0');
Delay1ms();
}
void DisplayClkHourTens() //显示闹钟时十位
{
WriteAddress(0x46);
LcdWriteDat((clockHour / 10) + '0');
Delay1ms();
}
void DisplayClkHourUnits() //显示闹钟时个位
{
WriteAddress(0x47);
LcdWriteDat((clockHour % 10) + '0');
Delay1ms();
}
void DisplayClkSecTens() //显示秒十位
{
WriteAddress(0x4C);
LcdWriteDat((sec / 10) + '0');
Delay1ms();
}
void DisplayClkSecUnits() //显示秒个位
{
WriteAddress(0x4D);
LcdWriteDat((sec % 10) + '0');
Delay1ms();
}
void ScanKey4()
{
if((Key4 == 0)&(clockFlag ==1))
{
Delay20ms();
if((Key4 == 0)&(clockFlag ==1))
{
clockFlag = 0;
beepNum = 0;
key4Flag = 0;
}
}
}
void InitTimer0()//初始化定时器0
{
TMOD = 0x11;
TH0 = (65536 - 50000) / 256;
TL0 = (65536 - 50000) % 256;
TH1 = (65536 - 50000) / 256;
TL1 = (65536 - 50000) % 256;
ET1=1;
ET0=1;
EA = 1;
PT0=1;
TR0=1;
TR1=1;
}
void main()//主函数
{
InitLcd1602();
LcdShowStr(0,0,table);
LcdShowStr(6,1,table1);
InitTimer0();
while(1)
{
if(sec == 60)
{
sec = 0;
min++;
}
if(min == 60)
{
min = 0;
hour++;
}
if(hour == 24)
{
hour = 0;
}
LcdShowStr(0,0,table);
DisplayHourTens();
DisplayHourUnits();
LcdShowStr(8,1,":");
DisplayMinTens();
DisplayMinUnits();
LcdShowStr(11,1,":");
DisplayClkSecUnits();
DisplayClkSecTens();
//==============================================================
if((Key1 == 0)&(key1Flag == 0)) { //设置当前时间
Delay20ms();
if((Key1 == 0)&(key1Flag == 0)) {
TR0 = 0;
InitLcd1602();
LcdShowStr(0,0,"SetCurrentTime");
DisplayHourTens();
DisplayHourUnits();
LcdShowStr(8,1,":");
DisplayMinTens();
DisplayMinUnits();
key1Flag = 1;
}
}
while(key1Flag == 1)
{
if(Key1 == 0) {
Delay20ms();
if(Key1 == 0)
{
hour++;
if(hour == 24)
{
hour = 0;
}
DisplayHourTens();
DisplayHourUnits();
LcdShowStr(8,1,":");
DisplayMinTens();
DisplayMinUnits();
}
}
if(Key2 == 0)
{
Delay20ms();
if(Key2 == 0)
{
min++;
if(min == 60)
{
min = 0;
hour++;
}
DisplayHourTens();
DisplayHourUnits();
LcdShowStr(8,1,":");
DisplayMinTens();
DisplayMinUnits();
}
}
if((Key3 == 0)&(key1Flag == 1)) { //退出设置当前时间
Delay20ms();
if((Key3 == 0)&(key1Flag == 1)) {
InitLcd1602();
LcdShowStr(0,0,table);
DisplayHourTens();
DisplayHourUnits();
LcdShowStr(8,1,":");
DisplayMinTens();
DisplayMinUnits();
LcdShowStr(11,1,":");
DisplayClkSecUnits();
DisplayClkSecTens();
key1Flag = 0;
TR0 = 1;
}
}
}
//==============================================================
if((min==0)&(sec<5)) //时间到整点
{
LED=0;
delay();
Beep();
Beep();
Delay20ms();
}
if((min==0)&(sec>=5))
{
LED=1;
}
//==============================================================
if((Key2 == 0)&(key2Flag == 0))
{ //显示闹钟时间
Delay20ms();
if((Key2 == 0)&(key2Flag == 0))
{
key2Flag = 1;
InitLcd1602();
while(key2Flag == 1)
{
LcdShowStr(0,0,"Clock Time");
DisplayClkHourTens();
DisplayClkHourUnits();
LcdShowStr(8,1,":");
DisplayClkMinTens();
DisplayClkMinUnits();
if(Key2 == 0)
{
Delay20ms();
if(Key2 == 0)
{
key2Flag = 0;
InitLcd1602();
DisplayHourTens();
DisplayHourUnits();
LcdShowStr(8,1,":");
DisplayMinTens();
DisplayMinUnits();
LcdShowStr(11,1,":");
DisplayClkSecUnits();
DisplayClkSecTens();
}
}
}
}
}
//==============================================================
if((Key3 == 0)&(key3Flag == 0)) //设置闹钟时间
{
Delay20ms();
if((Key3 == 0)&(key3Flag == 0))
{
TR0 = 0;
InitLcd1602();
LcdShowStr(0,0,"SetClockTime");
DisplayClkHourTens();
DisplayClkHourUnits();
LcdShowStr(8,1,":");
DisplayClkMinTens();
DisplayClkMinUnits();
key3Flag = 1;
}
}
while(key3Flag == 1)
{
if(Key1 == 0)
{
Delay20ms();
if(Key1 == 0)
{
clockHour++;
if(clockHour == 24)
{
clockHour = 0;
}
DisplayClkHourTens();
DisplayClkHourUnits();
LcdShowStr(8,1,":");
DisplayClkMinTens();
DisplayClkMinUnits();
}
}
if(Key2 == 0)
{
Delay20ms();
if(Key2 == 0)
{
clockMin++;
if(clockMin == 60)
{
clockHour++;
clockMin = 0;
}
DisplayClkHourTens();
DisplayClkHourUnits();
LcdShowStr(8,1,":");
DisplayClkMinTens();
DisplayClkMinUnits();
}
}
if(Key3 == 0)
{ //退出设置闹钟时间
Delay20ms();
if(Key3 == 0)
{
key3Flag = 0;
InitLcd1602();
TR0 = 1;
DisplayHourTens();
DisplayHourUnits();
LcdShowStr(8,1,":");
DisplayMinTens();
DisplayMinUnits();
LcdShowStr(11,1,":");
DisplayClkSecUnits();
DisplayClkSecTens();
}
}
}
//==============================================================
if((Key4 == 0)&(key4Flag == 0)) //闹钟ON/OFF位设置
{
Delay20ms();
if((Key4 == 0)&(key4Flag == 0))
{
key4Flag = 1;
InitLcd1602();
LcdShowStr(0,0,"Clock ON");
Delay20ms();
Delay20ms();
Delay20ms();
Delay20ms();
Delay20ms();
}
}
if((Key4 == 0)&(key4Flag == 1)) //闹钟ON/OFF位设置
{
Delay20ms();
if((Key4 == 0)&(key4Flag == 1))
{
key4Flag = 0;
InitLcd1602();
LcdShowStr(0,0,"Clock OFF");
Delay20ms();
Delay20ms();
Delay20ms();
Delay20ms();
}
}
//==============================================================
if((key4Flag == 1)&(hour == clockHour)&(min == clockMin))
{
clockFlag = 1; //闹钟时间到
InitLcd1602();
LcdShowStr(0,0,table);
LcdShowStr(0,0,"Time's up");
DisplayHourTens();
DisplayHourUnits();
LcdShowStr(8,1,":");
DisplayMinTens();
DisplayMinUnits();
LcdShowStr(11,1,":");
DisplayClkSecUnits();
DisplayClkSecTens();
while(clockFlag == 1)
{
LED=!LED;
Beep();
ScanKey4();
Delay20ms();
ScanKey4();
Delay20ms();
ScanKey4();
Delay20ms();
ScanKey4();
Delay20ms();
ScanKey4();
Delay20ms();
ScanKey4();
Delay20ms();
ScanKey4();
Delay20ms();
ScanKey4();
Delay20ms();
ScanKey4();
beepNum++;
if(beepNum == 20)
{
clockFlag = 0;
beepNum = 0;
key4Flag = 0;
LED=1;
}
}
}
}
}
void Timer0() interrupt 1
{
temp++;
if(temp == 20)
{
sec++;
temp = 0;
}
TH0 = (65536 - 50000) / 256;
TL0 = (65536 - 50000) % 256;
}
void Timer1() interrupt 3
{
TH1=(65536-50000)/256;
TL1=(65536-50000)%256;
}

复制代码

ID:752974 · 发表于 2021-6-22 08:28

在使用单片机时，有一个重要的概念：叫做“实时性”。

ID:924233 · 发表于 2021-6-22 08:33

munuc_w 发表于 2021-6-22 08:28
在使用单片机时，有一个重要的概念：叫做“实时性”。

能够指点一下吗不是很懂

ID:811711 · 发表于 2021-6-22 09:21

找例程看一下把，代码太长看不懂啊

ID:94031 · 发表于 2021-6-22 09:59

定时1中断就没用，为什么初始化要开定时1中断。

ID:924233 · 发表于 2021-6-22 10:06

xuyaqi 发表于 2021-6-22 09:59
定时1中断就没用，为什么初始化要开定时1中断。

因为想用这个定时1中断去使闹钟程序响了之后秒数能够继续转动，不会用就放在那里了

ID:123289 · 发表于 2021-6-22 13:46

记住：CPU在任何时刻只能做一件事，
当时钟该走的时候CPU没有让它走，它就不走了。
如果你的程序能不用DELAY，估计问题就解决了。
我猜你离开了DELAY就不会延时了。即搞不定！

ID:924233 · 发表于 2021-6-22 22:01

yzwzfyz 发表于 2021-6-22 13:46
记住：CPU在任何时刻只能做一件事，
当时钟该走的时候CPU没有让它走，它就不走了。
如果你的程序能不用DE ...

是的之前就想过是因为delay太多导致那个闹钟秒数不走延时完之后就继续走了想用两个定时器解决但是不会【笑哭】

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