发布时间 : 星期日 文章电子万年历毕业设计(基于AT89C51单片机和DS1302时钟芯片)更新完毕开始阅读ff357f82ba4cf7ec4afe04a1b0717fd5360cb21c
{
shi=(((shi>>4)&0x03)*10+(shi&0x0f))-1;
if(shi==-1) { }
shi=23;
ds1302_write(0x84,((shi/10)<<4)+((shi)&0x0f));
}
else if(mod==2) {
fen=(((fen>>4)&0x07)*10+(fen&0x0f))-1;
if(fen==-1) {
fen=59;
}
ds1302_write(0x82,((fen/10)<<4)+((fen)&
0x0f));
else if(mod==3) {
nian=(((nian>>4)&0x0f)*10+(nian&0x0f))-1; if(nian==0)
{ }
nian=99;
}
ds1302_write(0x8c,((nian/10)<<4)+((nian
)&0x0f)); }
else if(mod==4) {
yue=(((yue>>4)&0x01)*10+(yue&0x0f))-1; if(yue==0)
{ }
yue=12;
ds1302_write(0x88,((yue/10)<<4)+((yue)&
0x0f));//yue }
else if(mod==5)
{
if((yue==1)||(yue==3)||(yue==5)||(yue==7)||(yue==8)||(yue==10)||(yue==12)) {
ri=(((ri>>4)&0x03)*10+(ri&0x0f))-1;
if(ri==0)
{ ri=31;}
}
if((yue==4)||(yue==6)||(yue==9)||(yue==11)) {
ri=(((ri>>4)&0x03)*10+(ri&0x0f))-1; if(ri==0) { ri=30; }