{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.xiaopingtou.cn//data/attach/topic/topicKPo7gB.jpg', '推荐 y7575 的文章《RTC时间在LCD上显示需注意的问题》','https://www.xiaopingtou.net/article-63212.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
unsigned char displayTime[2];
rtc->day = ReadRtc();//从RTC寄存器读取时间
displayTime[0] = 0x30+(rtc->day / 16);
displayTime[1] = 0x30+(rtc->day % 16);
DisPlayTime(1,0,displayTime);//LCD显示时间函数
BCD码转十进制：(rtc->day / 16);
(rtc->day % 16);
十进制转ASCII码：0x30+(rtc->day / 16);
0x30+(rtc->day % 16);
也可这样写：
unsigned char displayTime[2];
rtc->day = ReadRtc();//从RTC寄存器读取时间
displayTime[0] = 0x30+(rtc->day >> 4);
displayTime[1] = 0x30+(rtc->day & 0x0f);
DisPlayTime(1,0,displayTime);//LCD显示时间函数