基於單片機51系列及DS1302時鐘芯片數字電子鐘的制作。求電路總原理圖、PCB圖、程序以及元件清單。
這是1602電路，和時鐘電路。
元件基本差不多。電路如圖
#include?<intrins.h>
#define?uchar?unsigned?char
#define?uint?unsigned?int
sbit?ds1302_RST?=P2^0;
sbit?ds1302_IO? =P2^1;
sbit?ds1302_SCLK=P2^2;
sbit?ACC0=ACC^0;
sbit?ACC7=ACC^7;
sbit?A1=P3^0;
sbit?A2=P3^1;
sbit?A3=P3^2;
sbit?A4=P3^3;
sbit?A5=P3^4;
sbit?A6=P3^5;
sbit?key1=P3^6;
sbit?key2=P3^7;
uchar?now_time[3],wei,d[3]={0,0,0};
uchar?code?s[]={?0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e
};
void?delay(uint?x)
{
uchar?i; for(x;x>0;x--)for(i=0;i<100;i++);
}
void?disp()
{
P1=s[now_time[2]/16];
A1=d[2]; delay(5); A1=1; P1=s[now_time[2]%16]; A2=d[2]; delay(5); A2=1; P1=s[now_time[1]/16]; A3=d[1]; delay(5); A3=1; P1=s[now_time[1]%16]; A4=d[1]; delay(5); A4=1; P1=s[now_time[0]/16]; A5=d[0]; delay(5); A5=1; P1=s[now_time[0]%16]; A6=d[0]; delay(5); A6=1;}
/***********************************************************************/
uchar? read_Byte()
{
uchar?i;
for(i=8;i>0;i--)
{
?ACC=ACC>>1;
?ACC7=ds1302_IO;
?ds1302_SCLK=1;
?ds1302_SCLK=0; ?
}?
return(ACC);
}
void? write_Byte(uchar?tdata)
{
uchar?i;
ACC=tdata;
for(i=8;i>0;i--)
{
?ds1302_IO=ACC0;
?ds1302_SCLK=1;
?ds1302_SCLK=0;
?ACC=ACC>>1;
}
}
/***********************************************************************************/
void?write_data_ds1302(uchar?taddr,uchar?tdata)
{
ds1302_RST=0;
ds1302_SCLK=0;
ds1302_RST=1;
write_Byte(taddr);
write_Byte(tdata);?
ds1302_RST=0;
ds1302_SCLK=1;
}
uchar?read_data_ds1302(uchar?taddr)
{?
uchar?tdata;
ds1302_RST=0;
ds1302_SCLK=0;
ds1302_RST=1;
write_Byte(taddr);
tdata=read_Byte();?
ds1302_RST=0;
ds1302_SCLK=1;
return(tdata);
}
/***********************************************************************************/
void?get_ds1302()?
{
uchar?k;
uchar?taddr?=?0x81;
for?(k=0;?k<3;?k++)
{
now_time[k]?=?read_data_ds1302(taddr);
taddr+=2;
}
}
/***********************************************************************************/
void?init_ds1302()
{
ds1302_RST=0;
ds1302_SCLK=0;
A1=1; A2=1; A3=1; A4=1; A5=1; A6=1;? write_data_ds1302(0x80,0x00);}
/***********************************************************************************/
void? Time();
/***********************************************************************************/
main()
{?
init_ds1302();
while(1){
disp();
get_ds1302();
if(key1==0);
? {?delay(10);
if(key1==0)
Time();
? }
}?
}
void?timer()?interrupt?3
{
uchar?i;i++;
TH1=(65535-50000)/256;
TL2=(65535-50000)%256;
if(i==50) {d[wei]=1;
} if(i==100) {?i=0;d[wei]=0;
}}
/***********************************************************************************/ void Time() {?uchar?temp;
uint?r=0,p=1;?
wei=2;
TMOD=0x01;
EA=1;
ET1=1;
TH1=(65535-50000)/256;
TL2=(65535-50000)%256;
TR1=1;
for(r=0;r<50;r++)
disp(); while(?key1?){?
wei=2;
disp();
if(key2==0)
{
disp();
if(key2==0)
{
temp=now_time[2]/16*10+now_time[2]%16;
?temp++;
?if(temp>=24)
? temp=0;
?now_time[2]=temp/10*16+temp%10;
?write_data_ds1302(0x84,now_time[2]);?
}
while(!key2);
}?
}?
? wei=1;
?d[2]=0;
for(r=0;r<50;r++)disp();
?
while(key1?){?disp();
if(key2==0)
{?
?disp();
?if(key2==0)
? {
temp=now_time[1]/16*10+now_time[1]%16;
temp++;
if(temp>=60)
temp=0;
now_time[1]=temp/10*16+temp%10;
write_data_ds1302(0x82,now_time[1]);?
? }
while(!key2);
}?
}? wei=0;
d[1]=0;
for(r=0;r<50;r++)disp();
while(key1?){
disp();
if(key2==0)
{
?now_time[0]=0;
?write_data_ds1302(0x80,now_time[0]);?
}?
} TR1=0;d[0]=0;
for(r=0;r<30;r++)disp();
}按圖安裝即可，祝妳成功。