#include
#include
#define uchar unsigned char
#define uint unsigned int
#define uint unsigned int
uint sec=0; //秒变量
uint cnt=0; //计数变量
uint on=0; //启停状态变量
uint cnt=0; //计数变量
uint on=0; //启停状态变量
uchar str1[16]=”The time: sec”; //这儿一切字符串长度必定 ,以便消除不确定显现码指针跑偏导致显现反常
uchar start[16]=” start “;
uchar stop[16]=” stop “;
uchar start[16]=” start “;
uchar stop[16]=” stop “;
#include “1602.h”
void port_init()
{
PORTA=0xff;
DDRA=0xff;
PORTB=0xff;
DDRB=0xff;
PORTD=0xff;
DDRD=0xff;
}
{
PORTA=0xff;
DDRA=0xff;
PORTB=0xff;
DDRB=0xff;
PORTD=0xff;
DDRD=0xff;
}
void time0_init()
{
TCCR0=0x03;
TIMSK=0x01;
TCNT0=0x83;
}
{
TCCR0=0x03;
TIMSK=0x01;
TCNT0=0x83;
}
void showtime(uint time)
{
displayonechar(10,0,(time/10)+48);
displayonechar(11,0,(time%10)+48);
}
{
displayonechar(10,0,(time/10)+48);
displayonechar(11,0,(time%10)+48);
}
void main()
{
{
port_init();
//1602设备初始化
delay(15);
writecmd(0x38);
delay(5);
writecmd(0x38);
delay(5);
writecmd(0x38);
writecmd(0x80);
writecmd(0x01);
writecmd(0x06);
writecmd(0x0c);
delay(500);
//初始化完毕
delay(15);
writecmd(0x38);
delay(5);
writecmd(0x38);
delay(5);
writecmd(0x38);
writecmd(0x80);
writecmd(0x01);
writecmd(0x06);
writecmd(0x0c);
delay(500);
//初始化完毕
init();
time0_init();
while(1)
{
time0_init();
while(1)
{
displaychar(0,0,str1);
showtime(sec); //显现时刻值(秒) 重复掩盖这2位 到达显现作用
delay(20);
}
}
#pragma vector = 0x24 //守时器0 溢出 (守时秒)
__interrupt void time0()
{
TCNT0=0x83;
if(on==1) //发动标志
{
cnt++;
if(cnt==1000)
{
sec++;cnt=0;
}
if(sec>100)sec=0;
}
}
__interrupt void time0()
{
TCNT0=0x83;
if(on==1) //发动标志
{
cnt++;
if(cnt==1000)
{
sec++;cnt=0;
}
if(sec>100)sec=0;
}
}
#pragma vector = 0x04 //INT0中止服务程序
__interrupt void int0()
{
on=1;
writecmd(0x01); // 清屏
displaychar(0,1,start); //显现发动字符
displaychar(0,0,str1); //显现本来字符
showtime(sec);
__interrupt void int0()
{
on=1;
writecmd(0x01); // 清屏
displaychar(0,1,start); //显现发动字符
displaychar(0,0,str1); //显现本来字符
showtime(sec);
}
#pragma vector = 0x08 //INT1中止服务程序
__interrupt void int1()
{
on=0;
writecmd(0x01); //清屏
displaychar(0,1,stop); //显现中止字符
displaychar(0,0,str1); //显现本来字符
showtime(sec);
__interrupt void int1()
{
on=0;
writecmd(0x01); //清屏
displaychar(0,1,stop); //显现中止字符
displaychar(0,0,str1); //显现本来字符
showtime(sec);
}