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鸽子
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847天前#include<reg52.h> |
#define ui unsigned int |
#define uc unsigned char |
sbit clk=P3^6;// ds1302 端口 |
sbit io=P3^4; |
sbit rst=P3^5; |
sbit rs=P2^6;//1602液晶 端口 |
sbit en=P2^7; |
sbit rw=P2^5; |
sbit DQ=P3^7;//ds18b20 端口 |
uc code table[]= "20 - -"; |
uc code table1[]=" : : . c"; |
uc shi,fen,miao,shi1,shi2,fen1,fen2,nian,yue,ri,count,flag,flag1; |
uc a,b,c,d,e,m,n,s,num,nling,count; |
int t1,t2; |
float tt; |
uint ;temph=30; |
uint ;templ=0; |
///////////////////**延时部分**//////////////////// |
void delay1(ui i) //us延时函数 |
{ |
while(i--); |
} |
void delay(ui z) //ms延时函数 |
{ |
ui x,y; |
for(x=z;x>0;x--) |
for(y=110;y>0;y--); |
} |
///////////////////**1602液晶**//////////////////// |
void write_1602(uc d,uc date) |
{ |
rs=d; //d=0写命令 d=1写数据 |
P0=date; |
delay(2); |
en=1; |
delay(2); |
en=0; |
} |
void wadd_1602s(uc add,uc date)//往lcd指定地址写两位数据 |
{ |
uc shi,ge; |
shi=date/10; |
ge=date%10; |
write_1602(0,add); |
write_1602(1,0x30+shi); |
write_1602(1,0x30+ge); |
} |
void wadd_1602z(uc add1,uc date1,uc date2,uc date3) // 指定地址写三位字符 |
{ |
write_1602(0,add1); |
write_1602(1,date1); |
write_1602(1,date2); |
write_1602(1,date3); |
} |
void init_1602() //1602初始化 |
{ |
uc a; |
rw=0; |
write_1602(0,0x38); |
write_1602(0,0x0c); |
write_1602(0,0x06); |
write_1602(0,0x01); |
for(a=0;a<=7;a++) |
{ |
write_1602(1,table[a]); |
} |
write_1602(0,0x80+0x40); |
for(a=0;a<=16;a++) |
{ |
write_1602(1,table1[a]); |
} |
} |
////////////////////**ds1302时钟**//////////////////// |
void write_1302(uc date) //写数据 |
{ |
ui i,k; |
k=date; |
for(i=0;i<8;i++) |
{ |
io=k&0x01; |
clk=1; |
clk=0; |
k=k>>1; |
} |
} |
uc read_1302() //读数据 |
{ |
ui i,k; |
for(i=0;i<8;i++) |
{ |
k=k>>1; |
if(io==1)k=k+0x80; |
clk=1; |
clk=0; |
} |
return k; |
} |
void wadd_1302(uc add,uc date) //指定地址写数据 |
{ |
rst=0; |
clk=0; |
rst=1; |
write_1302(add); |
write_1302(date); |
clk=1; |
rst=0; |
} |
uc radd_1302(uc add) //指定地址读数据 |
{ |
uc d; |
rst=0; |
clk=0; |
rst=1; |
write_1302(add|0x01); |
d=read_1302(); |
clk=1; |
rst=0; |
return d; |
} |
void Initial_DS1302(void) //时钟芯片初始化 |
{ |
wadd_1302(0x8e,0x00); |
wadd_1302(0x80,0x00); |
wadd_1302(0x82,0x45); |
wadd_1302(0x84,0x16); |
wadd_1302(0x86,0x20); |
wadd_1302(0x88,0x07); |
wadd_1302(0x8c,0x12); |
wadd_1302(0x8e,0x80); |
} |
|
////////////////////**18b20测温**////////////////// |
void init_ds18b20() //18b20初始化函数 |
{ |
uc x=0; |
DQ = 1; //DQ复位 |
delay1(8); //稍做延时 |
DQ = 0; //单片机将DQ拉低 |
delay1(80); //精确延时 大于 480us |
DQ = 1; //拉高总线 |
delay1(10); |
x=DQ; //稍做延时后 如果x=0则初始化成功 x=1则初始化失败 |
delay1(5); |
} |
uc ReadOneChar() //读一个字节 |
{ |
uc i; |
uc 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; |
delay1(5); |
} |
return(dat); |
} |
void WriteOneChar(uc dat)//写一个字节 |
{ |
uc i; |
for (i=8; i>0; i--) |
{ |
DQ = 0; |
DQ = dat&0x01; |
delay1(5); |
DQ = 1; |
dat>>=1; |
} |
delay1(5); |
} |
void ReadTem()//读取温度 |
{ |
init_ds18b20(); |
WriteOneChar(0xcc); // 跳过读序号列号的操作 |
WriteOneChar(0x44); // 启动温度转换 |
delay1(200); |
init_ds18b20(); |
WriteOneChar(0xcc); //跳过读序号列号的操作 |
WriteOneChar(0xbe); //读取温度寄存器等 |
a=ReadOneChar(); |
b=ReadOneChar(); |
t1=b; |
t1<<=8; |
t1=t1|a; |
if(tt>=35) |
nling=1; |
else if(tt<=10) |
nling=1; |
} |
|
///////////////////////显示部分//////////////////////// |
void display() |
{ |
ReadTem(); //温度 |
if(t1<0){t2=~t1+1; write_1602(0,0x80+0x40+9);write_1602(1,'-');} |
else {t2=t1;write_1602(0,0x80+0x40+9);write_1602(1,' ');} |
tt=t2*0.0625; //将温度的高位与低位合并 |
t2=tt*10+0.5; //对结果进行4舍5入 |
write_1602(0,0x80+0x40+10); |
write_1602(1,0x30+(t2/100)%10); |
write_1602(1,0x30+(t2/10)%10); |
write_1602(1,'.'); |
write_1602(1,0x30+(t2%10)); |
write_1602(1,0xdf); |
write_1602(1,'C'); |
shi=(radd_1302(0x84)>>4)*10+(radd_1302(0x84)&0x0f); |
fen=(radd_1302(0x82)>>4)*10+(radd_1302(0x82)&0x0f); |
miao=(radd_1302(0x80)>>4)*10+(radd_1302(0x80)&0x0f); |
wadd_1602s(0x80+0x40,shi); |
wadd_1602s(0x80+0x43,fen); |
wadd_1602s(0x80+0x46,miao); //时间 |
nian=(radd_1302(0x8c)>>4)*10+(radd_1302(0x8c)&0x0f); |
yue=(radd_1302(0x88)>>4)*10+(radd_1302(0x88)&0x0f); |
ri=(radd_1302(0x86)>>4)*10+(radd_1302(0x86)&0x0f); |
wadd_1602s(0x82,nian); |
wadd_1602s(0x85,yue); |
wadd_1602s(0x88,ri); //日期 |
} |
//*******************主函数****************** |
void main() |
{ |
|
init_1602(); |
init_ds18b20(); |
Initial_DS1302(); |
while(1) |
{ |
if(flag1==0) |
display(); |
delay(100); |
} |
} |
