LCD1602显示时间温度.docx
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LCD1602显示时间温度
#include
#include
#defineucharunsignedchar
#defineuintunsignedint
#defineLCDIOP2
sbitDQ=P1^3;//ds18b20与单片机连接口
sbitrs=P1^0;
sbitrd=P1^1;
sbitlcden=P1^2;
sbitacc0=ACC^0;//移位时的第0位
sbitacc7=ACC^7;//移位时用的第7位
ucharsecond,minute,hour,day,month,year,week,count=0;
ucharReadValue,num,time;
uinttvalue;//温度值
uchartflag;
ucharcodetable[]={"2010-11-29MON"};
ucharcodetable1[]={"15:
45:
00000.0C"};
ucharcodetable2[]="THUFRISATSUNMONTUEWES";
uchardatadisdata[5];
sbitDATA=P0^1;//时钟数据接口
sbitRST=P0^2;
sbitSCLK=P0^0;
sbitmenu=P3^5;//菜单
sbitadd=P3^6;//加一
sbitdec=P3^7;//减一
voiddelay(uintz)
{
uintx,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
voiddelay1(uintz)
{
for(;z>0;z--);
}
voidwrite_com(ucharcom)
{
rs=0;
rd=0;
lcden=0;
P2=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
voidwrite_date(uchardate)
{
rs=1;
rd=0;
lcden=0;
P2=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
voidinit()
{
ucharnum;
lcden=0;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x80);
delay(5);
write_com(0x80);
for(num=0;num<15;num++)
{
write_date(table[num]);
delay(5);
}
write_com(0x80+0x40);
for(num=0;num<15;num++)
{
write_date(table1[num]);
delay(5);
}
}
voidWrite1302(uchardat)
{
uchari;
SCLK=0;//拉低SCLK,为脉冲上升沿写入数据做好准备
delay1
(2);//稍微等待,使硬件做好准备
for(i=0;i<8;i++)//连续写8个二进制位数据
{
DATA=dat&0x01;//取出dat的第0位数据写入1302
delay
(2);//稍微等待,使硬件做好准备
SCLK=1;//上升沿写入数据
delay1
(2);//稍微等待,使硬件做好准备
SCLK=0;//重新拉低SCLK,形成脉冲
dat>>=1;//将dat的各数据位右移1位,准备写入下一个数据位
}
}
voidWriteSet1302(ucharCmd,uchardat)
{
RST=0;//禁止数据传递
SCLK=0;//确保写数居前SCLK被拉低
RST=1;//启动数据传输
delay1
(2);//稍微等待,使硬件做好准备
Write1302(Cmd);//写入命令字
Write1302(dat);//写数据
SCLK=1;//将时钟电平置于已知状态
RST=0;//禁止数据传递
}
ucharRead1302(void)
{
uchari,dat;
delay
(2);//稍微等待,使硬件做好准备
for(i=0;i<8;i++)//连续读8个二进制位数据
{
dat>>=1;//将dat的各数据位右移1位,因为先读出的是字节的最低位
if(DATA==1)//如果读出的数据是1
dat|=0x80;//将1取出,写在dat的最高位
SCLK=1;//将SCLK置于高电平,为下降沿读出
delay1
(2);//稍微等待
SCLK=0;//拉低SCLK,形成脉冲下降沿
delay1
(2);//稍微等待
}
returndat;//将读出的数据返回
}
ucharReadSet1302(ucharCmd)
{
uchardat;
RST=0;//拉低RST
SCLK=0;//确保写数居前SCLK被拉低
RST=1;//启动数据传输
Write1302(Cmd);//写入命令字
dat=Read1302();//读出数据
SCLK=1;//将时钟电平置于已知状态
RST=0;//禁止数据传递
returndat;//将读出的数据返回
}
voidInit_DS1302(void)
{
WriteSet1302(0x8E,0x00);//根据写状态寄存器命令字,写入不保护指令
WriteSet1302(0x80,((0/10)<<4|(0%10)));//根据写秒寄存器命令字,写入秒的初始值
WriteSet1302(0x82,((45/10)<<4|(45%10)));//根据写分寄存器命令字,写入分的初始值
WriteSet1302(0x84,((15/10)<<4|(15%10)));//根据写小时寄存器命令字,写入小时的初始值
WriteSet1302(0x86,((29/10)<<4|(29%10)));//根据写日寄存器命令字,写入日的初始值
WriteSet1302(0x88,((11/10)<<4|(11%10)));//根据写月寄存器命令字,写入月的初始值
WriteSet1302(0x8c,((10/10)<<4|(10%10)));//nian
WriteSet1302(0x8a,((4/10)<<4|(4%10)));
}
voidDisplaySecond(ucharx)
{
uchari,j;
i=x/10;
j=x%10;
write_com(0xc7);
write_date(0x30+i);
write_date(0x30+j);
}
voidDisplayMinute(ucharx)
{
uchari,j;
i=x/10;
j=x%10;
write_com(0xc4);
write_date(0x30+i);
write_date(0x30+j);
}
voidDisplayHour(ucharx)
{
uchari,j;
i=x/10;
j=x%10;
write_com(0xc1);
write_date(0x30+i);
write_date(0x30+j);
}
voidDisplayDay(ucharx)
{
uchari,j;
i=x/10;
j=x%10;
write_com(0x89);
write_date(0x30+i);
write_date(0x30+j);
}
voidDisplayMonth(ucharx)
{
uchari,j;
i=x/10;
j=x%10;
write_com(0x86);
write_date(0x30+i);
write_date(0x30+j);
}
voidDisplayYear(ucharx)
{
uchari,j;
i=x/10;
j=x%10;
write_com(0x83);
write_date(0x30+i);
write_date(0x30+j);
}
voidDisplayWeek(ucharx)
{uchari;
x=x*3;
write_com(0x8c);
for(i=0;i<3;i++)
{
write_date(table2[x]);
x++;
}
}
voidread_date(void)
{
ReadValue=ReadSet1302(0x81);
second=((ReadValue&0x70)>>4)*10+(ReadValue&0x0F);
ReadValue=ReadSet1302(0x83);
minute=((ReadValue&0x70)>>4)*10+(ReadValue&0x0F);
ReadValue=ReadSet1302(0x85);
hour=((ReadValue&0x70)>>4)*10+(ReadValue&0x0F);
ReadValue=ReadSet1302(0x87);
day=((ReadValue&0x70)>>4)*10+(ReadValue&0x0F);
ReadValue=ReadSet1302(0x89);
month=((ReadValue&0x70)>>4)*10+(ReadValue&0x0F);
ReadValue=ReadSet1302(0x8d);
year=((ReadValue&0x70)>>4)*10+(ReadValue&0x0F);
ReadValue=ReadSet1302(0x8b);//读星期
week=ReadValue&0x07;
DisplaySecond(second);
DisplayMinute(minute);
DisplayHour(hour);
DisplayDay(day);
DisplayMonth(month);
DisplayYear(year);
DisplayWeek(week);
}
voidturn_val(charnewval,ucharflag,ucharnewaddr,uchars1num)
{
newval=ReadSet1302(newaddr);//读取当前时间
newval=((newval&0x70)>>4)*10+(newval&0x0f);//将bcd码转换成十进制
if(flag)//判断是加一还是减一
{
newval++;
switch(s1num)
{case1:
if(newval>99)newval=0;
DisplayYear(newval);
break;
case2:
if(newval>12)newval=1;
DisplayMonth(newval);
break;
case3:
if(newval>31)newval=1;
DisplayDay(newval);
break;
case4:
if(newval>6)newval=0;
DisplayWeek(newval);
break;
case5:
if(newval>23)newval=0;
DisplayHour(newval);
break;
case6:
if(newval>59)newval=0;
DisplayMinute(newval);
break;
case7:
if(newval>59)newval=0;
DisplaySecond(newval);
break;
default:
break;
}
}
else
{
newval--;
switch(s1num)
{case1:
if(newval==0)newval=99;
DisplayYear(newval);
break;
case2:
if(newval==0)newval=12;
DisplayMonth(newval);
break;
case3:
if(newval==0)newval=31;
DisplayDay(newval);
break;
case4:
if(newval<0)newval=6;
DisplayWeek(newval);
break;
case5:
if(newval<0)newval=23;
DisplayHour(newval);
break;
case6:
if(newval<0)newval=59;
DisplayMinute(newval);
break;
case7:
if(newval<0)newval=59;
DisplaySecond(newval);
break;
default:
break;
}
}
WriteSet1302((newaddr-1),((newval/10)<<4)|(newval%10));//将新数据写入寄存器
}
//键盘扫描程序
//*******************************************
voidkey_scan(void)
{ucharmiao,s1num=0;
if(menu==0)
{
delay(5);
if(menu==0)
{
while(!
menu);
s1num++;
while
(1)
{
if(menu==0)
{
delay(5);
if(menu==0)
{
while(!
menu);
s1num++;
}
}
rd=0;
miao=ReadSet1302(0x81);
second=miao;
WriteSet1302(0x80,miao|0x80);
write_com(0x0f);//光标闪射
if(s1num==1)
{year=ReadSet1302(0x8d);
write_com(0x80+4);//年光标
if(add==0)
{
delay(3);
if(add==0)
{while(!
add);
turn_val(year,1,0x8d,1);
}
}
if(dec==0)
{
delay(3);
if(dec==0)
{while(!
dec);
turn_val(year,0,0x8d,1);
}
}
}
if(s1num==2)
{
month=ReadSet1302(0x89);
write_com(0x80+7);//月光标
if(add==0)
{
delay(3);
if(add==0)
{while(!
add);
turn_val(month,1,0x89,2);
}
}
if(dec==0)
{
delay(3);
if(dec==0)
{while(!
dec);
turn_val(month,0,0x89,2);
}
}
}
if(s1num==3)
{day=ReadSet1302(0x87);
write_com(0x80+10);//日光标
if(add==0)
{
delay(3);
if(add==0)
{while(!
add);
turn_val(day,1,0x87,3);
}
}
if(dec==0)
{
delay(3);
if(dec==0)
{while(!
dec);
turn_val(day,0,0x87,3);//写入日寄存器
}
}
}
if(s1num==4)
{week=ReadSet1302(0x8b);
write_com(0x80+14);//星期光标
if(add==0)
{
delay(3);
if(add==0)
{while(!
add);
turn_val(week,1,0x8b,4);
}
}
if(dec==0)
{
delay(3);
if(dec==0)
{while(!
dec);
turn_val(week,0,0x8b,4);
}
}
}
if(s1num==5)
{hour=ReadSet1302(0x85);
write_com(0x80+0x40+2);//时光标
if(add==0)
{
delay(3);
if(add==0)
{while(!
add);
turn_val(hour,1,0x85,5);
}
}
if(dec==0)
{
delay(3);
if(dec==0)
{while(!
dec);
turn_val(hour,0,0x85,5);
}
}
}
if(s1num==6)//调时间分
{minute=ReadSet1302(0x83);
write_com(0x80+0x40+5);
if(add==0)
{
delay(5);
if(add==0)
{while(!
add);
turn_val(minute,1,0x83,6);//写入分寄存器
}
}
if(dec==0)
{
delay(3);
if(dec==0)
{while(!
dec);
turn_val(minute,0,0x83,6);//写入分寄存器
}
}
}
if(s1num==7)//调时间秒
{second=ReadSet1302(0x81);
write_com(0x80+0x40+8);//秒光标
if(add==0)
{
delay(3);
if(add==0)
{while(!
add);
if(second==0x60)
second=0x00;
turn_val(second,1,0x81,7);
}
}
if(dec==0)
{
delay(3);
if(dec==0)
{while(!
dec);
turn_val(second,0,0x81,7);
}
}
}
if(s1num==8)
{miao=ReadSet1302(0x81);
second=miao;
WriteSet1302(0x80,second&0x7f);
s1num=0;//s1num清零//
write_com(0x0c);//光标不闪烁//
break;
}
}
}
}
}
voiddelay_18B20(unsignedinti)//延时1微秒
{
while(i--);
}
voidds1820rst()/*ds1820复位*/
{unsignedcharx=0;
DQ=1;//DQ复位
delay_18B20(4);//延时
DQ=0;//DQ拉低
delay_18B20(100);//精确延时大于480us
DQ=1;//拉高
delay_18B20(40);
}
uchards1820rd()/*读数据*/
{unsignedchari=0;
unsignedchardat=0;
for(i=8;i>0;i--)
{DQ=0;//给脉冲信号
dat>>=1;
DQ=1;//给脉冲信号
if(DQ)
dat|=0x80;
delay_18B20(10);
}
return(dat);
}
voidds1820wr(ucharwdata)/*写数据*/
{unsignedchari=0;
for(i=8;i>0;i--)
{DQ=0;
DQ=wdata&0x01;
delay_18B20(10);
DQ=1;
wdata>>=1;
}
}
read_temp()/*读取温度值并转换*/
{uchara,b;
ds1820rst();
ds1820wr(0xcc);//*跳过读序列号*/
ds1820wr(0x44);//*启动温度转换*/
ds1820rst();
ds1820wr(0xcc);//*跳过读序列号*/
ds1820wr(0xbe);//*读取温度*/
a=ds1820rd();
b=ds1820rd();
tvalue=b;