📄 clock_1201_2.c
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/*
以写内容：初始化液晶后读时钟将时钟写入液晶，按键中断中setupint=1时读取
年数据然后写向0x80+0x40;读取液晶值已经完成。08-11-29
加入按键设置时间共五键设置向上向下完成取消加入温度DS18B20
*/
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit rs=P1^0;
sbit lcde=P1^1;
sbit lcdrw=P1^6;
sbit dscs=P1^2;
sbit dsas=P1^3;
sbit dsrw=P1^4;
sbit dsds=P1^5;
sbit complete=P3^4;
sbit cancle=P3^5;
sbit setweek=P3^6;
sbit up=P3^0;
sbit down=P3^1;
sbit DQ=P3^7;//ds18b20与单片机连接口
uchar code nyr[]=" 20 - -";
uchar code sfm[]=" : : . C";
uchar code addnyr[]={0x83,0x86,0x89,0x8c,0xc0,0xc3,0xc6};
uchar code addc[]={0x09,0x08,0x07,0x06,0x04,0x02,0x00};
uchar code week[]="SunMonTueWedThuFriSta";
uchar data clockdata[5];
uchar setupint,readc;
uchar data disdata[5];
uint tvalue;//温度值
uchar tflag;//温度正负标志
void delay(uchar x)
{
uchar j,i;
for(i=x;i>0;i--)
for(j=110;j>0;j--);
}
/***********************液晶程序*******************************/
void Lcd_write_com(uchar command)
{
lcdrw=0;
rs=0;
lcde=0;
P0=command;
delay(5);
lcde=1;
delay(5);
lcde=0;
}
uchar Lcd_readtime(uchar radd)
{
uchar rclock,rclock1,rclock2;
Lcd_write_com(radd);
rs=1;
lcdrw=1;
lcde=1;
P0=0xff;
delay(5);
rclock1=P0;
delay(5);
Lcd_write_com(radd+1);
rs=1;
lcdrw=1;
lcde=1;
P0=0xff;
delay(5);
rclock2=P0;
delay(5);
rclock=(rclock1-0x30)*10+(rclock2-0x30);
return rclock;
}
void Lcd_write_data(uchar date)
{
lcdrw=0;
rs=1;
lcde=0;
P0=date;
delay(5);
lcde=1;
delay(5);
lcde=0;
}
void init()
{
uchar i;
EA=1;
EX0=1;
IT0=1;
Lcd_write_com(0x38);
Lcd_write_com(0x08);
Lcd_write_com(0x01);
Lcd_write_com(0x06);
Lcd_write_com(0x0c);
Lcd_write_com(0x80);
for(i=0;i<9;i++)
{
Lcd_write_data(nyr[i]);
}
Lcd_write_com(0x80+0x40);
for(i=0;i<16;i++)
{
Lcd_write_data(sfm[i]);
}
}
uchar ds12887_read(uchar add)
{
uchar dsdate;
dsas=1;
dsds=1;
dsrw=1;
dscs=0;
P2=add;
dsas=0;
dsds=0;
P2=0xff;
dsdate=P2;
dsds=1;
dsas=1;
dscs=1;
return dsdate;
}
void ds12887_writeLCD()
{
uchar temp,si,ge,i,j;
for(i=0;i<7;i++)
{
temp=ds12887_read(addc[i]);
si=temp/10;
ge=temp%10;
Lcd_write_com(addnyr[i]);
if(i==3)
{
for(j=0;j<3;j++)
{
Lcd_write_data(week[ge*3+j]);
}
}
else
{
Lcd_write_data(0x30+si);
Lcd_write_data(0x30+ge);
}
}
}
void ds12887_keys_num(uchar cadd,uchar num)
{
uchar r1,r2;
r1=num/10;
r2=num%10;
Lcd_write_com(cadd);
Lcd_write_data(0x30+r1);
Lcd_write_data(0x30+r2);
Lcd_write_com(cadd+1);
}
void ds12887_write()
{
uchar i,j;
j=0;
//设置禁止更新时间
dscs=0;
dsas=1;
dsds=1;
dsrw=1;
P2=0x0b;
dsas=0;
dsrw=0;
P2=0x86;
dsrw=1;
dsas=1;
dscs=1;
for(i=0;i<6;i++)
{
dsas=1;
dsds=1;
dsrw=1;
dscs=0;
P2=addc[j];
dsas=0;
dsrw=0;
P2=clockdata[i];
dsrw=1;
dsas=1;
dscs=1;
j++;
if(j==3)j=4;
}
//开始更新时间
dscs=0;
dsas=1;
dsds=1;
dsrw=1;
P2=0x0b;
dsas=0;
dsrw=0;
P2=0x06;
dsrw=1;
dsas=1;
dscs=1;
Lcd_write_com(0x0c);//关闭光标
setupint=0;
}
void ds12887_keys()
{
Lcd_write_com(0x0d);
switch(setupint)
{
case 1:
clockdata[0]=Lcd_readtime(addnyr[0]);
while(setupint==1)
{
if(up==0)
{
delay(50);
clockdata[0]++;
ds12887_keys_num(addnyr[0],clockdata[0]);
while(up==0);
delay(50);
}
if(down==0)
{
delay(50);
clockdata[0]--;
ds12887_keys_num(addnyr[0],clockdata[0]);
while(down==0);
delay(50);
}
if(cancle==0)setupint=0;
if(complete==0)
{ds12887_write();while(complete==0);}
}
break;
case 2:
clockdata[1]=Lcd_readtime(addnyr[1]);
while(setupint==2)
{
if(up==0)
{
delay(50);
clockdata[1]++;
ds12887_keys_num(addnyr[1],clockdata[1]);
while(up==0);
delay(50);
}
if(down==0)
{
delay(50);
clockdata[1]--;
ds12887_keys_num(addnyr[1],clockdata[1]);
while(down==0);
delay(50);
}
if(cancle==0)setupint=0;
if(complete==0)
{ds12887_write();while(complete==0);}
}
break;
case 3:
clockdata[2]=Lcd_readtime(addnyr[2]);
while(setupint==3)
{
if(up==0)
{
delay(50);
clockdata[2]++;
ds12887_keys_num(addnyr[2],clockdata[2]);
while(up==0);
delay(50);
}
if(down==0)
{
delay(50);
clockdata[2]--;
ds12887_keys_num(addnyr[2],clockdata[2]);
while(down==0);
delay(50);
}
if(cancle==0)setupint=0;
if(complete==0)
{ds12887_write();while(complete==0);}
}
break;
case 5:
clockdata[3]=Lcd_readtime(addnyr[4]);
while(setupint==5)
{
if(up==0)
{
delay(50);
clockdata[3]++;
ds12887_keys_num(addnyr[4],clockdata[3]);
while(up==0);
delay(50);
}
if(down==0)
{
delay(50);
clockdata[3]--;
ds12887_keys_num(addnyr[4],clockdata[3]);
while(down==0);
delay(50);
}
if(cancle==0)setupint=0;
if(complete==0)
{ds12887_write();while(complete==0);}
}
break;
case 6:
clockdata[4]=Lcd_readtime(addnyr[5]);
while(setupint==6)
{
if(up==0)
{
delay(50);
clockdata[4]++;
ds12887_keys_num(addnyr[5],clockdata[4]);
while(up==0);
delay(50);
}
if(down==0)
{
delay(50);
clockdata[4]--;
ds12887_keys_num(addnyr[5],clockdata[4]);
while(down==0);
delay(50);
}
if(cancle==0)setupint=0;
if(complete==0)
{ds12887_write();while(complete==0);}
}
break;
case 7:
clockdata[5]=Lcd_readtime(addnyr[6]);
while(setupint==7)
{
if(up==0)
{
delay(50);
clockdata[5]++;
ds12887_keys_num(addnyr[6],clockdata[5]);
while(up==0);
delay(50);
}
if(down==0)
{
delay(50);
clockdata[5]--;
ds12887_keys_num(addnyr[6],clockdata[5]);
while(down==0);
delay(50);
}
if(cancle==0)setupint=0;
if(complete==0)
{ds12887_write();while(complete==0);}
}
break;
}
if(cancle==0){setupint=0;}
}
/******************************ds1820程序***************************************/
void ds1820_delay(unsigned int i)//延时1微秒
{
while(i--);
}
void ds1820_reset()/*ds1820复位*/
{ unsigned char x=0;
DQ = 1; //DQ复位
ds1820_delay(4); //延时
DQ = 0; //DQ拉低
ds1820_delay(100); //精确延时大于480us
DQ = 1; //拉高
ds1820_delay(40);
}
void ds1820_write(uchar wdata)/*写数据*/
{unsigned char i=0;
for (i=8; i>0; i--)
{ DQ = 0;
DQ = wdata&0x01;
ds1820_delay(10);
DQ = 1;
wdata>>=1;
}
}
uchar ds1820_read()/*读数据*/
{ unsigned char i=0;
unsigned char dat = 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;
ds1820_delay(10);
}
return(dat);
}
ds1820_temp()/*读取温度值并转换*/
{uchar a,b;
ds1820_reset();
ds1820_write(0xcc);//*跳过读序列号*/
ds1820_write(0x44);//*启动温度转换*/
ds1820_reset();
ds1820_write(0xcc);//*跳过读序列号*/
ds1820_write(0xbe);//*读取温度*/
a=ds1820_read();
b=ds1820_read();
tvalue=b;
tvalue<<=8;
tvalue=tvalue|a;
if(tvalue<0x0fff)
tflag=0;
else
{tvalue=~tvalue+1;
tflag=1;
}
tvalue=tvalue*(0.625);//温度值扩大10倍，精确到1位小数
return(tvalue);
}
void ds1820_disp()//温度值显示
{ uchar flagdat;
disdata[0]=tvalue/1000+0x30;//百位数
disdata[1]=tvalue%1000/100+0x30;//十位数
disdata[2]=tvalue%100/10+0x30;//个位数
disdata[3]=tvalue%10+0x30;//小数位
if(tflag==0)
flagdat=0x20;//正温度不显示符号
else
flagdat=0x2d;//负温度显示负号:-
if(disdata[0]==0x30)
{disdata[0]=0x20;//如果百位为0，不显示
if(disdata[1]==0x30)
{disdata[1]=0x20;//如果百位为0，十位为0也不显示
}
}
Lcd_write_com(0xcb);
Lcd_write_data(disdata[1]);
Lcd_write_com(0xcc);
Lcd_write_data(disdata[2]);
Lcd_write_com(0xce);
Lcd_write_data(disdata[3]);
}
void main()
{
init();
while(1)
{
if(setupint==0)
{
ds12887_writeLCD();
ds1820_temp();
ds1820_disp();
}
else
{
ds12887_keys();
}
}
}
void ds12887_keys_init() interrupt 0
{
setupint++;
if(setupint>7)
setupint=1;
if(setupint==4)
setupint++;
}⌨️ 快捷键说明
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