DS1802HE LCD1602实现万年历和温度显示(不用时间芯片)

#include

#include

#include

#define uchar unsigned char

#define uint unsigned int

uchar code table[]="--Figo";

//uchar code table1[]="https://www.360docs.net/doc/0410994813.html,";

sbit lcden=P3^4;

sbit lcdrs=P3^5;

sbit dula=P2^6;

sbit wela=P2^7;

sbit ds=P1^7;

sbit key1=P1^0;

sbit key2=P1^1;

sbit key3=P1^2;

sbit key4=P1^3;

int tempValue;

int s_1=1000;

unsigned char FunKeyFlag=6,keypress;

#define key_vaule1 0x01

#define key_vaule2 0x02

#define key_vaule3 0x03

#define key_vaule4 0x04

uchar num;

int ms_10=10;

int flag=0;

int s_1_1=1000;

uint sec=55;

uint min=9;

uint hour=22;

uint nian=2014;

uint yue=8;

uint ri=20;

uint xingqi=3;

//延时函数, 对于11.0592MHz时钟, 例i=10,则大概延时10ms. void delay_wendu(unsigned int i)

{

unsigned int j;

while(i--)

{

for(j = 0; j < 125; j++);

}

}

//初始化DS18B20

//让DS18B20一段相对长时间低电平, 然后一段相对非常短时间高电平, 即可启动void dsInit()

{

//对于11.0592MHz时钟, unsigned int型的i, 作一个i++操作的时间大于?us unsigned int i;

ds = 0;

i = 100; //拉低约800us, 符合协议要求的480us以上

while(i>0) i--;

ds = 1; //产生一个上升沿, 进入等待应答状态

i = 4;

while(i>0) i--;

}

void dsWait()

{

unsigned int i;

while(ds);

while(~ds);//检测到应答脉冲

i = 4;

while(i > 0) i--;

}

//向DS18B20读取一位数据

//读一位, 让DS18B20一小周期低电平, 然后两小周期高电平,

//之后DS18B20则会输出持续一段时间的一位数据

bit readBit()

{

unsigned int i;

bit b;

ds = 0;

i++;//延时约8us, 符合协议要求至少保持1us

ds = 1;

i++; i++;//延时约16us, 符合协议要求的至少延时15us以上

b = ds;

i = 8;

while(i>0) i--; //延时约64us, 符合读时隙不低于60us要求

return b;

}

//读取一字节数据, 通过调用readBit()来实现

unsigned char readByte()

unsigned int i;

unsigned char j, dat;

dat = 0;

for(i=0; i<8; i++)

{

j = readBit();

//最先读出的是最低位数据

dat = (j << 7) | (dat >> 1);

}

return dat;

}

//向DS18B20写入一字节数据

void writeByte(unsigned char dat)

{

unsigned int i;

unsigned char j;

bit b;

for(j = 0; j < 8; j++)

{

b = dat & 0x01;

dat >>= 1;

//写"1", 将DQ拉低15us后, 在15us~60us内将DQ拉高, 即完成写1

if(b)

{

ds = 0;

i++;

i++; //拉低约16us, 符号要求15~60us内

ds = 1;

i = 8;

while(i>0)

i--; //延时约64us, 符合写时隙不低于60us要求

}

else //写"0", 将DQ拉低60us~120us

ds = 0;

i = 8; while(i>0) i--;//拉低约64us, 符号要求

ds = 1;

i++;

i++;//整个写0时隙过程已经超过60us, 这里就不用像写1那样, 再延时64us了

}

}

//向DS18B20发送温度转换命令

void sendChangeCmd()

dsInit(); //初始化DS18B20, 无论什么命令, 首先都要发起初始化

dsWait(); //等待DS18B20应答

delay_wendu(1); //延时1ms, 因为DS18B20会拉低DQ 60~240us作为应答信号

writeByte(0xcc); //写入跳过序列号命令字Skip Rom

writeByte(0x44); //写入温度转换命令字Convert T

}

//向DS18B20发送读取数据命令

void sendReadCmd()

{

dsInit();

dsWait();

delay_wendu(1);

writeByte(0xcc); //写入跳过序列号命令字Skip Rom

writeByte(0xbe); //写入读取数据令字Read Scratchpad

}

//获取当前温度值

int getTmpValue()

{

unsigned int tmpvalue;

int value; //存放温度数值

float t;

unsigned char low, high;

sendReadCmd();

//连续读取两个字节数据

low = readByte();

high = readByte();

//将高低两个字节合成一个整形变量

//计算机中对于负数是利用补码来表示的

//若是负值, 读取出来的数值是用补码表示的, 可直接赋值给int型的value

tmpvalue = high;

tmpvalue <<= 8;

tmpvalue |= low;

value = tmpvalue;

//使用DS18B20的默认分辨率12位, 精确度为0.0625度, 即读回数据的最低位代表0.0625度

t = value * 0.0625;

//将它放大100倍, 使显示时可显示小数点后两位, 并对小数点后第三进行4舍5入

//如t=11.0625, 进行计数后, 得到value = 1106, 即11.06 度

//如t=-11.0625, 进行计数后, 得到value = -1106, 即-11.06 度

value = t * 100 + (value > 0 ? 0.5 : -0.5); //大于0加0.5, 小于0减0.5

return value;

}

void HandleKeyPress() ;

void KeyScan() //按键扫描

{

static unsigned char state=0;

unsigned char temp;

if (key1==0) temp=key_vaule1;

else if (key2==0) temp=key_vaule2;

else if (key3==0) temp=key_vaule3;

else if (key4==0) temp=key_vaule4;

else temp=0;

switch (state)

{

case 0: if(temp!=0) state=1;break;

case 1: state=2; break;

case 2: if(temp!=0) {state=3;keypress=temp;} else state=0; break;

case 3: if(temp==0) {HandleKeyPress();state=0;} break;

}

}

void HandleKeyPress() //按键功能的设置

{ if (keypress==key_vaule1) //功能键的设置

{

FunKeyFlag=(FunKeyFlag+1)%7;

}

else if (keypress==key_vaule2) //第二个按键的设置

{

switch (FunKeyFlag)

{

case 0:hour++;if(hour>23)hour=0;break;

case 1:min++;if(min>59)min=0;break;

case 2:sec++;if(sec>59)min=0;break;

case 3:ri++;xingqi++;if(ri>30)ri=1;if(xingqi>7)xingqi=1;break;

case 4:yue++;if(yue>12)yue=1;break;

case 5:nian++;break;

}

}

else if (keypress==key_vaule3) //第三个按键的设置

{

switch (FunKeyFlag)

{

case 0:hour--;if(hour<0)hour=23;break;

case 1:min--;if(min<0)min=59;break;

case 2:sec--;if(sec<0)sec=59;break;

case 3:ri--;xingqi--;if(ri<1)ri=31;if(xingqi<1)xingqi=1;break;

case 4:yue--;if(yue<1)yue=12;break;

case 5:nian--;break;

}

}

else if (keypress==key_vaule4) //第四个按键的设置{

switch (FunKeyFlag)

{

case 0:hour=0;break;

case 1:min=0;break;

case 2:sec=0;break;

case 3:ri=1;xingqi=1;break;

case 4:yue=1;break;

case 5:nian=2000;break;

}

}

}

void delay(uint z)

{

uint x,y;

for(x=z;x>0;x--)

for(y=110;y>0;y--);

}

void write_com(uchar com)

{

lcdrs=0;

P0=com;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

void write_data(uchar date)

{

lcdrs=1;

P0=date;

flag=1;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

shijian_show(uchar wei,shijian )

{

uchar shi,ge;

shi=shijian/10;

ge=shijian%10;

write_com(0x80+0x40+wei);

write_data(0x30+shi);

write_data(0x30+ge);

}

rili_show(uchar wei,rili )

{

uchar shi,ge;

shi=rili/10;

ge=rili%10;

write_com(0x80+wei);

write_data(0x30+shi);

write_data(0x30+ge);

}

nian_show(uchar wei,shijian )

{

uchar shi,ge,qian,bai;

qian=shijian/1000;

bai=shijian%1000/100;

shi=shijian%100/10;

ge=shijian%10;

write_com(0x80+wei);

write_data(0x30+qian);

write_data(0x30+bai);

write_data(0x30+shi);

write_data(0x30+ge);

}

wendu_show(uchar wei,int wendu ) {

uchar shi,ge,qian,bai,xiao;

qian=wendu/10000;

bai=wendu%10000/1000;

shi=wendu%1000/100;

ge=wendu%100/10;

xiao=wendu%10;

write_com(0x80+0x40+wei);

write_data(0x30+qian);

write_data(0x30+bai);

write_data(0x30+shi);

// write_com(0x80+0x40+wei+1);

write_data(0xdf);

write_data(0x30+ge);

write_data(0x30+xiao);

}

void init()

{

P0=0;

dula=0;

wela=0;

lcden=0;

write_com(0x38);

write_com(0x0c);

write_com(0x06);

write_com(0x01);

}

void week_show() //星期的显示{

write_com(0x80+12);

switch (xingqi)

{

case 1:{

write_data('M');

write_data('o');

write_data('n');

}break;

case 2:{

write_data('T');

write_data('u');

write_data('e');

}break;

case 3:{

write_data('W');

write_data('e');

write_data('d');

}break;

case 4:{

write_data('T');

write_data('h');

write_data('u');

}break;

case 5:{

write_data('F');

write_data('r');

write_data('i');

}break;

case 6:{

write_data('S');

write_data('a');

write_data('t');

}break;

case 7:{

write_data('S');

write_data('u');

write_data('n');

}break;

}

}

void main()

{

TMOD = 0x01;

TH0 = (65536-1000)/256;

TL0 = (65536-1000)%256;

EA = 1;

ET0 = 1;

TR0 = 1;

init();

while(1)

{

nian_show(1,nian);

rili_show(6,yue);

rili_show(9,ri);

shijian_show(0,hour);

shijian_show(3,min);

shijian_show(6,sec);

write_com(0x80+5);

write_data(0x2d);

write_com(0x80+8);

write_data(0x2d);

write_com(0x80+0x40+2);

write_data(0x3A);

write_com(0x80+0x40+5);

write_data(0x3A);

week_show();

wendu_show(10,tempValue);

}

}

void time() interrupt 1

{

TH0 = (65536-1000)/256;

TL0 = (65536-1000)%256;

ms_10--;

s_1_1--;

if(s_1_1<=0)

{

s_1_1=1000; sendChangeCmd();

//显示5次

tempValue = getTmpValue(); //计算温度}

if(ms_10<=0) //按键扫描

{

ms_10=10;

KeyScan();

}

s_1--;

if(s_1<=0)

{

s_1=1000;

sec++;

if(sec>59)

{

sec=0;

min++;

if(min>59)

{

min=0;

hour++;

if(hour>23)

{

hour=0;

ri++;

xingqi++;

if(xingqi>7)

{

xingqi=1;

}

if((yue==1||yue==3||yue==5||yue==7||yue==8||yue==10||yue==12)&&ri>31)

{

ri=1;

yue++;

}

else if(yue==2)

{

if(nian%100!=0)

{

if(nian%4==0)

{

if(ri>29)

{

ri=1;

yue++;

}

}

else if(nian%4!=0)

{

if(ri>28)

{

ri=1;

yue++;

}

}

}

else if(nian%100==0)

{

if(nian%400==0)

{

if(ri>29)

{

ri=1;

yue++;

}

}

else if(nian%400!=0)

{

if(ri>28)

{

ri=1;

yue++;

}

}

}

}

else if((yue==4||yue==6||yue==9||yue==11)&&ri>30)

{

ri=1;

yue++;

}

if(yue>12)

{

nian++;

yue=1;

}

}

}

}

}

}