倒计时显示程序
程序:
#include
#include
#define uchar unsigned char //将unsigned char定义为uchar,简化输写。提高编程速度
#define uint unsigned int //将unsigned char定义为uint,简化输写。提高编程速度
sbit lcdrs=P1^0; //数据命令选择控制
sbit lcdrw=P1^1; //读/写选择控制
sbit lcden=P1^2; //使能信号
sbit SCL2=P1^3; //SCL2定义为P1口的第3位脚,连接DS1302SCL 和ADC0831SCL脚
sbit SDA2=P1^4; //SDA2定义为P1口的第4位脚,连接DS1302SCL 和ADC0831SDA脚
sbit RST = P1^5; // DS1302片选脚
sbit H1=P0^4; //高四位分别对应P04-P07
sbit H2=P0^5;
sbit H3=P0^6;
sbit H4=P0^7;
sbit D=P1^7;
unsigned char l_tmpdate[8]={0x00,0x06,0x03,0x18,0x0c,0x07,0x06,0}; unsigned char l_tmpdisplay[8]={0x40,0x40,0x40,0x40,0x40,0x40,0x40,0}; code unsigned char write_rtc_address[7]={0x80,0x82,0x84,0x86,0x88,0x8a,0x8c};
code unsigned char read_rtc_address[7]={0x81,0x83,0x85,0x87,0x89,0x8b,0x8d};
uchar t0[]=" - - ";
uchar t1[]=" : : ";
uchar wendu[]="0123456789";
uchar shi,ge;
uchar nian,yue,ri,shi,fen;
uchar key,num;
long number;
uchar j;
uchar flag,m,n;
uchar qian2,bai2,shi2,ge2; void delay1(uchar z)
{
uchar x,y;
for(x=1000;x>1;x--)
for(y=z;y>1;y--);
}
void delay(uchar z)
{
uchar x,y;
for(x=1000;x>1;x--)
for(y=z;y>1;y--);
}
void write_com(uchar com) {
lcdrs=0;
P2=com;
delay1(5);
lcden=1;
delay1(5);
lcden=0;
}
void write_date(uchar date) {
lcdrs=1;
P2=date;
delay1(5);
lcden=1;
delay1(5);
lcden=0;
}
void init_lcd()
{
uchar i;
lcden=0;
lcdrw=0;
write_com(0x38);
write_com(0x01);
write_com(0x0c);
write_com(0x06);
write_com(0x80);
for(i=0;i<16;i++)
{
write_date(t0[i]);
delay(0);
}
write_com(0x80+0x40);
for(i=0;i<16;i++)
{
write_date(t1[i]);
delay(0);
}
}
/**************************DS1302************************************ */
void Write_Ds1302_Byte(unsigned char temp)
{
unsigned char i;
for (i=0;i<8;i++) //循环8次写入数据
{
SCL2=0;
SDA2=temp&0x01; //每次传输低字节
temp>>=1; //右移一位
SCL2=1;
}
}
/******************************************************************** ********/
void Write_Ds1302( unsigned char address,unsigned char dat ) {
RST=0;
_nop_();
SCL2=0;
_nop_();
RST=1;
_nop_(); //启动
Write_Ds1302_Byte(address); //发送地址
Write_Ds1302_Byte(dat); //发送数据
RST=0; //恢复
}
/******************************************************************** ********/
unsigned char Read_Ds1302 ( unsigned char address )
{
unsigned char i,temp=0x00;
RST=0;
_nop_();
SCL2=0;
_nop_();
RST=1;
_nop_();
Write_Ds1302_Byte(address);
for (i=0;i<8;i++) //循环8次读取数据
{
if(SDA2)
temp|=0x80; //每次传输低字节
SCL2=0;
temp>>=1; //右移一位
SCL2=1;
}
RST=0;
_nop_(); //以下为DS1302复位的稳定时间
RST=0;
SCL2=0;
_nop_();
SCL2=1;
_nop_();
SDA2=0;
_nop_();
SDA2=1;
_nop_();
return (temp); //返回
}
/*读取日历*/
void Read_RTC(void)
{
unsigned char i,*p;
p=read_rtc_address; //地址传递
for(i=0;i<7;i++) //分7次读取年月日时分秒星期
{
l_tmpdate[i]=Read_Ds1302(*p);
p++;
}
}
/*设定日历*/
void Set_RTC(void)
{
unsigned char i,*p,tmp;
for(i=0;i<7;i++){
tmp=l_tmpdate[i]/10;
l_tmpdate[i]=l_tmpdate[i]%10;
l_tmpdate[i]=l_tmpdate[i]+tmp*16;
}
Write_Ds1302(0x8e,0x00);
p=write_rtc_address; //传地址
for(i=0;i<7;i++) //7次写入年月日时分秒星期{
Write_Ds1302(*p,l_tmpdate[i]);
p++;
}
Write_Ds1302(0x80,0x00);
}
void jiaoshi()
{
switch(j)
{
case 0:break;
case 1:{nian=num/10*16+num%10;
Write_Ds1302(0x8c,nian);//年
break;}
case 2:{yue=num/10*16+num%10;
Write_Ds1302(0x88,yue); //月
break;}
case 3:{ri=num/10*16+num%10;
Write_Ds1302(0x86,ri); //日
break;}
case 4:{shi=num/10*16+num%10;
Write_Ds1302(0x84,shi); //时
break;}
case 5:{fen=num/10*16+num%10;
Write_Ds1302(0x82,fen); //分
break;}
}
}
void display()
{
uchar nians,niang,yues,yueg,ris,rig;
uchar shis,shig,fens,feng,miaos,miaog;
uchar qian1,bai1,shi1,ge1;
nians=l_tmpdate[6]/16;
niang=l_tmpdate[6]&0x0f;
yues=l_tmpdate[4]/16;
yueg=l_tmpdate[4]&0x0f;
ris=l_tmpdate[3]/16;
rig=l_tmpdate[3]&0x0f;
shis=l_tmpdate[2]/16/10;
shig=l_tmpdate[2]&0x0f;
fens=l_tmpdate[1]/16;
feng=l_tmpdate[1]&0x0f;
miaos=l_tmpdate[0]/16;
miaog=l_tmpdate[0]&0x0f;
if(shis==0&&shig==0&&fens==0&&feng==0&&miaos==0&&miaog==0)number--;
if(number==0) D=0;
write_com(0x80+4);
write_date(wendu[nians]);
write_com(0x80+5);
write_date(wendu[niang]);
write_com(0x80+7);
write_date(wendu[yues]);
write_com(0x80+8);
write_date(wendu[yueg]);
write_com(0x80+10);
write_date(wendu[ris]);
write_com(0x80+11);
write_date(wendu[rig]);
write_com(0x80+0x40);
write_date(wendu[shis]);
write_com(0x80+0x40+1); write_date(wendu[shig]);
write_com(0x80+0x40+3); write_date(wendu[fens]);
write_com(0x80+0x40+4); write_date(wendu[feng]);
write_com(0x80+0x40+6); write_date(wendu[miaos]);
write_com(0x80+0x40+7); write_date(wendu[miaog]);
qian1=number/1000;
bai1=number%1000/100;
shi1=number%1000%100/10;
ge1=number%10;
write_com(0x80+0x40+10); write_date(wendu[qian1]);
write_com(0x80+0x40+11); write_date(wendu[bai1]);
write_com(0x80+0x40+12);
write_date(wendu[shi1]);
write_com(0x80+0x40+13);
write_date(wendu[ge1]);
}
void Init()
{
EA=1; //首先开启总中断
EX0=1; //开启外部中断 0
IT0=1; // 设置成下降沿触发方式
EX1=1; //开启外部中断 0
IT1=1;
}
/***************************键盘*************************************/
uchar saomiao()
{
P0=0xfe;
if(H1==0){key=1;} //按键盘S1,显示"0"
if(H2==0){key=2;} //按键盘S2,显示"1"
if(H3==0){key=3;} //按键盘S3,显示"2"
if(H4==0){key=4;} //按键盘S4,显示"3"
P0=0xfd;
if(H1==0){key=5;} //按键盘S5,显示"4"
if(H2==0){key=6;} //按键盘S6,显示"5"
if(H3==0){key=7;} //按键盘S7,显示"6"
if(H4==0){key=8;} //按键盘S8,显示"7"
P0=0xfb;
if(H1==0){key=9;} //按键盘S9,显示"8"
if(H2==0){key=0;} //按键盘S10,显示"9"
P0=0xf0;
if((H1==1)&&(H2==1)&&(H3==1)&&(H4==1))
{key=100;}
return(key);
}
/**************************键盘扫描***************************************/
uchar jianpan()
{
num=0;
if(m==1)
{
if(j<=5)
{
n=j;
if(j==1)write_com(0x80+4);
if(j==2)write_com(0x80+7);
if(j==3)write_com(0x80+10);
if(j==4)write_com(0x80+0x40);
if(j==5)write_com(0x80+0x40+3);
while((saomiao()==100)&&m==1&&(j-n==0));
while((saomiao()!=100)&&m==1&&(j-n==0))
{
shi=saomiao();
if(j==1)
{
write_com(0x80+4);
write_date(wendu[shi]);
}
if(j==2)
{
write_com(0x80+7);
write_date(wendu[shi]);
}
if(j==3)
{
write_com(0x80+10);
write_date(wendu[shi]);
}
if(j==4)
{
write_com(0x80+0x40);
write_date(wendu[shi]);
}
if(j==5)
{
write_com(0x80+0x40+3);
write_date(wendu[shi]);
}
}
while((saomiao()==100)&&m==1&&(j-n==0)); while((saomiao()!=100)&&m==1&&(j-n==0)) {
ge=saomiao();
if(j==1)
{
write_com(0x80+5);
write_date(wendu[ge]);
write_com(0x80+4);
}
if(j==2)
{
write_com(0x80+8);
write_date(wendu[ge]);
write_com(0x80+7);
}
if(j==3)
{
write_com(0x80+11);
write_date(wendu[ge]);
write_com(0x80+10);
}
if(j==4)
{
write_com(0x80+0x40+1);
write_date(wendu[ge]);
write_com(0x80+0x40);
}
if(j==5)
{
write_com(0x80+0x40+4);
write_date(wendu[ge]);
write_com(0x80+0x40+3);
}
num=shi*10+ge;
}
}
if(j==6)
{
write_com(0x80+0x40+10);
while((saomiao()==100)&&m==1);
while((saomiao()!=100)&&m==1)
{
qian2=saomiao();
write_com(0x80+0x40+10);
write_date(wendu[qian2]);
}
while((saomiao()==100)&&m==1);
while((saomiao()!=100)&&m==1)
{
bai2=saomiao();
write_com(0x80+0x40+11);
write_date(wendu[bai2]);
}
while((saomiao()==100)&&m==1);
while((saomiao()!=100)&&m==1)
{
shi2=saomiao();
write_com(0x80+0x40+12);
write_date(wendu[shi2]);
}
while((saomiao()==100)&&m==1);
while((saomiao()!=100)&&m==1)
{
ge2=saomiao();
write_com(0x80+0x40+13);
write_date(wendu[ge2]);
}
number=qian2*1000+bai2*100+shi2*10+ge2;
}
}
return(num);
}
void main()
{ D=1;
Init();
init_lcd();
Set_RTC();
number=1234;
j=0;m=0;
while(1)
{
num=jianpan();
jiaoshi();
if(m==0)
{
Read_RTC();
display();
delay1(10);
}
}
}
void INTI0() interrupt 0
{
m=0;j=0;
Write_Ds1302(0x80,0x00);
Write_Ds1302(0x8e,0x80); //写保护,禁止写
write_com(0x0c);
delay(50);
}
void INTI1() interrupt 2
{
Write_Ds1302(0x8e,0x00); //1302写保护,允许写Write_Ds1302(0x80,0x80);
m=1;j++;
write_com(0x0f);
if(j==7)
{
j=1;
}
delay(50);
}