uchar read_1302(uchar add)//从1302读数据函数，指定读取数据来源地址 { }
uchar BCD_Decimal(uchar bcd)//BCD码转十进制函数，输入BCD，返回十进制 {
uchar Decimal; Decimal=bcd>>4;
return(Decimal=Decimal*10+(bcd&=0x0F)); }
//--------------------------------------
void ds1302_init() //1302芯片初始化子函数(2010-01-07,12:00:00,week4) { RST=0; SCLK=0;
write_1302(0x8e,0x00); //允许写，禁止写保护
//write_1302(0x80,0x00); //向DS1302内写秒寄存器80H写入初始秒数据00 //write_1302(0x82,0x00);//向DS1302内写分寄存器82H写入初始分数据00 //write_1302(0x84,0x12);//向DS1302内写小时寄存器84H写入初始小时数据12 //write_1302(0x8a,0x04);//向DS1302内写周寄存器8aH写入初始周数据4
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uchar temp; RST=0; SCLK=0; RST=1; write_byte(add); temp=read_byte(); SCLK=1; RST=0; return(temp);
//write_1302(0x86,0x07);//向DS1302内写日期寄存器86H写入初始日期数据07 //write_1302(0x88,0x01);//向DS1302内写月份寄存器88H写入初始月份数据01 //write_1302(0x8c,0x10);//向DS1302内写年份寄存器8cH写入初始年份数据10 write_1302(0x8e,0x80); //打开写保护 }
//----------------------------------- //时分秒显示子函数
void write_sfm(uchar add,uchar dat)//向LCD写时分秒,有显示位置加、现示数据，两个参数 { }
//------------------------------------- //年月日显示子函数
void write_nyr(uchar add,uchar dat)//向LCD写年月日，有显示位置加数、显示数据，两个参数 { }
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uchar gw,sw;
gw=dat;//取得个位数字 sw=dat/10;//取得十位数字
write_1602com(er+add);//er是头文件规定的值0x80+0x40 write_1602dat(0x30+sw);//数字+30得到该数字的LCD1602显示码 write_1602dat(0x30+gw);//数字+30得到该数字的LCD1602显示码
uchar gw,sw;
gw=dat;//取得个位数字 sw=dat/10;//取得十位数字
write_1602com(yh+add);//设定显示位置为第一个位置+add write_1602dat(0x30+sw);//数字+30得到该数字的LCD1602显示码 write_1602dat(0x30+gw);//数字+30得到该数字的LCD1602显示码
//------------------------------------------- void write_week(uchar week)//写星期函数 {
write_1602com(yh+0x0c);//星期字符的显示位置 switch(week) {
case 1:write_1602dat('M');//星期数为1时，显示
write_1602dat('O'); write_1602dat('N'); break;
case 2:write_1602dat('T');//星期数据为2时显示
write_1602dat('U'); write_1602dat('E'); break;
case 3:write_1602dat('W');//星期数据为3时显示
write_1602dat('E'); write_1602dat('D'); break;
case 4:write_1602dat('T');//星期数据为4是显示
write_1602dat('H'); write_1602dat('U'); break;
case 5:write_1602dat('F');//星期数据为5时显示
write_1602dat('R'); write_1602dat('I'); break;
case 6:write_1602dat('S');//星期数据为6时显示
write_1602dat('T'); write_1602dat('A');
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} }
break;
case 7:write_1602dat('S');//星期数据为7时显示
write_1602dat('U'); write_1602dat('N'); break;
//****************键盘扫描有关函数********************** void keyscan() {
if(key1==0)//---------------key1为功能键（设置键）-------------------- {
delay(9);//延时，用于消抖动
if(key1==0)//延时后再次确认按键按下 {
buzzer=0;//蜂鸣器短响一次 delay(20); buzzer=1;
while(!key1); key1n++; if(key1n==9)
key1n=1;//设置按键共有秒、分、时、星期、日、月、年、返回，8个功能循环
switch(key1n) {
case 1: TR0=0;//关闭定时器
//TR1=0;
write_1602com(er+0x09);//设置按键按动一次，秒位置显示光标
write_1602com(0x0f);//设置光标为闪烁
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temp=(miao)/10*16+(miao);//秒数据写入DS1302 write_1302(0x8e,0x00);
write_1302(0x80,0x80|temp);//miao write_1302(0x8e,0x80); break;
case 2: write_1602com(er+6);//按2次fen位置显示光标
//write_1602com(0x0f);
break;
case 3: write_1602com(er+3);//按动3次，shi
//write_1602com(0x0f);
break;
case 4: write_1602com(yh+0x0e);//按动4次，week
//write_1602com(0x0f);
break;
case 5: write_1602com(yh+0x0a);//按动5次，ri
//write_1602com(0x0f);
break;
case 6: write_1602com(yh+0x07);//按动6次，yue
//write_1602com(0x0f);
break;
case 7: write_1602com(yh+0x04);//按动7次，nian
//write_1602com(0x0f);
break;
case 8:
write_1602com(0x0c);//按动到第8次，设置光标不闪烁 TR0=1;//打开定时器
write_1302(0x8e,0x00);
write_1302(0x80,0x00|temp);//miao数据写入DS1302
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