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/*
程序名稱：溫顯萬年歷
程序操作：把LCD1602連接到學習板上；連接J11，J10的4和6，3和5使能DS1302；使用杜邦線連接J7的中間線與J8的中間線使能18B20；連接18B20模塊。
程序效果： LCD1602會變成可以顯示年月日時分秒，溫度的萬年歷，使用S19-22調節，S19-選擇調節項目，S20-加1，S21-減1，S22-確定
*/
#include <REG51.H>
#include <intrins.h>
#define uint unsigned int
#define uchar unsigned char
sbit DS1302_CLK = P3^6; //實時時鐘時鐘線引腳
sbit DS1302_IO = P3^7; //實時時鐘數據線引腳
sbit DS1302_RST = P1^4; //實時時鐘復位線引腳
sbit ACC0 = ACC^0;
sbit ACC7 = ACC^7;
char hide_sec,hide_min,hide_hour,hide_day,hide_week,hide_month,hide_year; //秒,分,時到日,月,年位閃的計數
sbit Set = P2^0; //模式切換鍵
sbit Up = P2^1; //加法按鈕
sbit Down = P2^2; //減法按鈕
sbit out = P2^3; //立刻跳出調整模式按鈕
sbit DQ = P3^5; //溫度傳送數據IO口
char done,count,temp,flag,up_flag,down_flag;
uchar temp_value; //溫度值
uchar TempBuffer[5],week_value[2];
void show_time(); //液晶顯示程序
/***********1602液晶顯示部分子程序****************/
sbit LcdRs = P1^0; //LCD1602的RS，RW，E端口設定
sbit LcdRw = P1^1;
sbit LcdEn = P1^2;
sfr DBPort = 0x80; //P0=0x80,P1=0x90,P2=0xA0,P3=0xB0.數據端口
//內部等待函數************************************
unsigned char LCD_Wait(void)
{
LcdRs=0;
LcdRw=1; _nop_();
LcdEn=1; _nop_();
LcdEn=0;
return DBPort;
}
//向LCD寫入命令或數據*****************************
#define LCD_COMMAND 0 // Command
#define LCD_DATA 1 // Data
#define LCD_CLEAR_SCREEN 0x01 // 清屏
#define LCD_HOMING 0x02 // 光標返回原點
void LCD_Write(bit style, unsigned char input)
{
LcdEn=0;
LcdRs=style;
LcdRw=0; _nop_();
DBPort=input; _nop_(); //注意順序
LcdEn=1; _nop_(); //注意順序
LcdEn=0; _nop_();
LCD_Wait();
}
//設置顯示模式************************************
#define LCD_SHOW 0x04 //顯示開
#define LCD_HIDE 0x00 //顯示關
#define LCD_CURSOR 0x02 //顯示光標
#define LCD_NO_CURSOR 0x00 //無光標
#define LCD_FLASH 0x01 //光標閃動
#define LCD_NO_FLASH 0x00 //光標不閃動
void LCD_SetDisplay(unsigned char DisplayMode)
{
LCD_Write(LCD_COMMAND, 0x08|DisplayMode);
}
//設置輸入模式************************************
#define LCD_AC_UP 0x02
#define LCD_AC_DOWN 0x00 // default
#define LCD_MOVE 0x01 // 畫面可平移
#define LCD_NO_MOVE 0x00 //default
void LCD_SetInput(unsigned char InputMode)
{
LCD_Write(LCD_COMMAND, 0x04|InputMode);
}
//初始化LCD***************************************
void LCD_Initial()
{
LcdEn=0;
LCD_Write(LCD_COMMAND,0x38); //8位數據端口,2行顯示,5*7點陣
LCD_Write(LCD_COMMAND,0x38);
LCD_SetDisplay(LCD_SHOW|LCD_NO_CURSOR); //開啟顯示, 無光標
LCD_Write(LCD_COMMAND,LCD_CLEAR_SCREEN); //清屏
LCD_SetInput(LCD_AC_UP|LCD_NO_MOVE); //AC遞增, 畫面不動
}
//液晶字符輸入的位置******************************
void GotoXY(unsigned char x, unsigned char y)
{
if(y==0)
LCD_Write(LCD_COMMAND,0x80|x);
if(y==1)
LCD_Write(LCD_COMMAND,0x80|(x-0x40));
}
//將字符輸出到液晶顯示
void Print(unsigned char *str)
{
while(*str!='\0')
{
LCD_Write(LCD_DATA,*str);
str++;
}
}
/***********DS1302時鐘部分子程序******************/
typedef struct __SYSTEMTIME__
{
unsigned char Second;
unsigned char Minute;
unsigned char Hour;
unsigned char Week;
unsigned char Day;
unsigned char Month;
unsigned char Year;
unsigned char DateString[11];
unsigned char TimeString[9];
}SYSTEMTIME; //定義的時間類型
SYSTEMTIME CurrentTime;
#define AM(X) X
#define PM(X) (X+12) // 轉成24小時制
#define DS1302_SECOND 0x80 //時鐘芯片的寄存器位置,存放時間
#define DS1302_MINUTE 0x82
#define DS1302_HOUR 0x84
#define DS1302_WEEK 0x8A
#define DS1302_DAY 0x86
#define DS1302_MONTH 0x88
#define DS1302_YEAR 0x8C
void DS1302InputByte(unsigned char d) //實時時鐘寫入一字節(內部函數)
{
unsigned char i;
ACC = d;
for(i=8; i>0; i--)
{
DS1302_IO = ACC0; //相當于匯編中的 RRC
DS1302_CLK = 1;
DS1302_CLK = 0;
ACC = ACC >> 1;
}
}
unsigned char DS1302OutputByte(void) //實時時鐘讀取一字節(內部函數)
{
unsigned char i;
for(i=8; i>0; i--)
{
ACC = ACC >>1; //相當于匯編中的 RRC
ACC7 = DS1302_IO;
DS1302_CLK = 1;
DS1302_CLK = 0;
}
return(ACC);
}
void Write1302(unsigned char ucAddr, unsigned char ucDa) //ucAddr: DS1302地址, ucData: 要寫的數據
{
DS1302_RST = 0;
DS1302_CLK = 0;
DS1302_RST = 1;
DS1302InputByte(ucAddr); // 地址，命令
DS1302InputByte(ucDa); // 寫1Byte數據
DS1302_CLK = 1;
DS1302_RST = 0;
}
unsigned char Read1302(unsigned char ucAddr) //讀取DS1302某地址的數據
{
unsigned char ucData;
DS1302_RST = 0;
DS1302_CLK = 0;
DS1302_RST = 1;
DS1302InputByte(ucAddr|0x01); // 地址，命令
ucData = DS1302OutputByte(); // 讀1Byte數據
DS1302_CLK = 1;
DS1302_RST = 0;
return(ucData);
}
void DS1302_GetTime(SYSTEMTIME *Time) //獲取時鐘芯片的時鐘數據到自定義的結構型數組
{
unsigned char ReadValue;
ReadValue = Read1302(DS1302_SECOND);
Time->Second =((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue =Read1302(DS1302_MINUTE);
Time->Minute =((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue =Read1302(DS1302_HOUR);
Time->Hour = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_DAY);
Time->Day =((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_WEEK);
Time->Week =((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_MONTH);
Time->Month =((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_YEAR);
Time->Year =((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
}
void DateToStr(SYSTEMTIME *Time) //將時間年,月,日,星期數據轉換成液晶顯示字符串,放到數組里DateString[]
{ if(hide_year<2) //這里的if,else語句都是判斷位閃爍,<2顯示數據,>2就不顯示,輸出字符串為 2007/07/22
{
Time->DateString[0] = '2';
Time->DateString[1] = '0';
Time->DateString[2] = Time->Year/10 + '0';
Time->DateString[3] = Time->Year%10 + '0';
}
else
{
Time->DateString[0] = ' ';
Time->DateString[1] = ' ';
Time->DateString[2] = ' ';
Time->DateString[3] = ' ';
}
Time->DateString[4] = '/';
if(hide_month<2)
{
Time->DateString[5] = Time->Month/10 + '0';
Time->DateString[6] = Time->Month%10 + '0';
}
else
{
Time->DateString[5] = ' ';
Time->DateString[6] = ' ';
}
Time->DateString[7] = '/';
if(hide_day<2)
{
Time->DateString[8] = Time->Day/10 + '0';
Time->DateString[9] = Time->Day%10 + '0';
}
else
{
Time->DateString[8] = ' ';
Time->DateString[9] = ' ';
}
if(hide_week<2)
{
week_value[0] = Time->Week%10 + '0'; //星期的數據另外放到 week_value[]數組里,跟年,月,日的分開存放,因為等一下要在最后顯示
}
else
{
week_value[0] = ' ';
}
week_value[1] = '\0';
Time->DateString[10] = '\0'; //字符串末尾加 '\0' ,判斷結束字符
}
void TimeToStr(SYSTEMTIME *Time) //將時,分,秒數據轉換成液晶顯示字符放到數組 TimeString[];
{ if(hide_hour<2)
{
Time->TimeString[0] = Time->Hour/10 + '0';
Time->TimeString[1] = Time->Hour%10 + '0';
}
else
{
Time->TimeString[0] = ' ';
Time->TimeString[1] = ' ';
}
Time->TimeString[2] = ':';
if(hide_min<2)
{
Time->TimeString[3] = Time->Minute/10 + '0';
Time->TimeString[4] = Time->Minute%10 + '0';
}
else
{
Time->TimeString[3] = ' ';
Time->TimeString[4] = ' ';
}
Time->TimeString[5] = ':';
if(hide_sec<2)
{
Time->TimeString[6] = Time->Second/10 + '0';
Time->TimeString[7] = Time->Second%10 + '0';
}
else
{
Time->TimeString[6] = ' ';
Time->TimeString[7] = ' ';
}
Time->DateString[8] = '\0';
}
void Initial_DS1302(void) //時鐘芯片初始化
{
unsigned char Second=Read1302(DS1302_SECOND);
if(Second&0x80) //判斷時鐘芯片是否關閉
{
Write1302(0x8e,0x00); //寫入允許
Write1302(0x8c,0x07); //以下寫入初始化時間日期:07/07/25.星期: 3. 時間: 23:59:55
Write1302(0x88,0x07);
Write1302(0x86,0x25);
Write1302(0x8a,0x07);
Write1302(0x84,0x23);
Write1302(0x82,0x59);
Write1302(0x80,0x55);
Write1302(0x8e,0x80); //禁止寫入
}
}
/***********ds18b20子程序*************************/
/***********ds18b20延遲子函數（晶振12MHz ）*******/
void delay_18B20(unsigned int i)
{
while(i--);
}
/**********ds18b20初始化函數**********************/
void Init_DS18B20(void)
{
unsigned char x=0;
DQ = 1; //DQ復位
delay_18B20(8); //稍做延時
DQ = 0; //單片機將DQ拉低
delay_18B20(80); //精確延時大于 480us
DQ = 1; //拉高總線
delay_18B20(14);
x=DQ; //稍做延時后如果x=0則初始化成功 x=1則初始化失敗
delay_18B20(20);
}
/***********ds18b20讀一個字節**************/
unsigned char ReadOneChar(void)
{
uchar i=0;
uchar dat = 0;
for (i=8;i>0;i--)
{
DQ = 0; // 給脈沖信號
dat>>=1;
DQ = 1; // 給脈沖信號
if(DQ)
dat|=0x80;
delay_18B20(4);
}
return(dat);
}
/*************ds18b20寫一個字節****************/
void WriteOneChar(uchar dat)
{
unsigned char i=0;
for (i=8; i>0; i--)
{
DQ = 0;
DQ = dat&0x01;
delay_18B20(5);
DQ = 1;
dat>>=1;
}
}
/**************讀取ds18b20當前溫度************/
void ReadTemp(void)
{
unsigned char a=0;
unsigned char b=0;
unsigned char t=0;
Init_DS18B20();
WriteOneChar(0xCC); // 跳過讀序號列號的操作
WriteOneChar(0x44); // 啟動溫度轉換
delay_18B20(100); // this message is wery important
Init_DS18B20();
WriteOneChar(0xCC); //跳過讀序號列號的操作
WriteOneChar(0xBE); //讀取溫度寄存器等（共可讀9個寄存器）前兩個就是溫度
delay_18B20(100);
a=ReadOneChar(); //讀取溫度值低位
b=ReadOneChar(); //讀取溫度值高位
temp_value=b<<4;
temp_value+=(a&0xf0)>>4;
}
void temp_to_str() //溫度數據轉換成液晶字符顯示
{
TempBuffer[0]=temp_value/10+'0'; //十位
TempBuffer[1]=temp_value%10+'0'; //個位
TempBuffer[2]=0xdf; //溫度符號
TempBuffer[3]='C';
TempBuffer[4]='\0';
}
void Delay1ms(unsigned int count)
{
unsigned int i,j;
for(i=0;i<count;i++)
for(j=0;j<120;j++);
}
/*延時子程序*/
void mdelay(uint delay)
{ uint i;
for(;delay>0;delay--)
{for(i=0;i<62;i++) //1ms延時.
{;}
}
}
void outkey() //跳出調整模式,返回默認顯示
{ uchar Second;
if(out==0)//||wireless_1==1)
{ mdelay(8);
count=0;
hide_sec=0,hide_min=0,hide_hour=0,hide_day=0,hide_week=0,hide_month=0,hide_year=0;
Second=Read1302(DS1302_SECOND);
Write1302(0x8e,0x00); //寫入允許
Write1302(0x80,Second&0x7f);
Write1302(0x8E,0x80); //禁止寫入
done=0;
while(out==0);
//while(wireless_1==1);
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////
void Upkey()//升序按鍵
{
Up=1;
if(Up==0)//||wireless_2==1)
{
mdelay(8);
switch(count)
{case 1:
temp=Read1302(DS1302_SECOND); //讀取秒數
temp=temp+1; //秒數加1
up_flag=1; //數據調整后更新標志
if((temp&0x7f)>59) //超過59秒,清零
temp=0;
break;
case 2:
temp=Read1302(DS1302_MINUTE); //讀取分數
temp=temp+1; //分數加1
up_flag=1;
if(temp>59) //超過59分,清零
temp=0;
break;
case 3:
temp=Read1302(DS1302_HOUR); //讀取小時數
temp=temp+1; //小時數加1
up_flag=1;
if(temp>23) //超過23小時,清零
temp=0;
break;
case 4:
temp=Read1302(DS1302_WEEK); //讀取星期數
temp=temp+1; //星期數加1
up_flag=1;
if(temp>7)
temp=1;
break;
case 5:
temp=Read1302(DS1302_DAY); //讀取日數
temp=temp+1; //日數加1
up_flag=1;
if(temp==0x0a)
temp=0x10;
if(temp==0x1a)
temp=0x20;
if(temp>0x2b)
temp=1;
break;
case 6:
temp=Read1302(DS1302_MONTH); //讀取月數
temp=temp+1; //月數加1
up_flag=1;
if(temp>12)
temp=1;
break;
case 7:
temp=Read1302(DS1302_YEAR); //讀取年數
temp=temp+1; //年數加1
up_flag=1;
if(temp>0x85)
temp=0;
break;
default:break;
}
while(Up==0);
//while(wireless_2==1);
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////
void Downkey()//降序按鍵
{
Down=1;
if(Down==0)//||wireless_3==1)
{
mdelay(8);
switch(count)
{case 1:
temp=Read1302(DS1302_SECOND); //讀取秒數
temp=temp-1; //秒數減1
down_flag=1; //數據調整后更新標志
if(temp==0x7f) //小于0秒,返回59秒
temp=59;
break;
case 2:
temp=Read1302(DS1302_MINUTE); //讀取分數
temp=temp-1; //分數減1
down_flag=1;
if(temp==-1)
temp=59; //小于0秒,返回59秒
break;
case 3:
temp=Read1302(DS1302_HOUR); //讀取小時數
temp=temp-1; //小時數減1
down_flag=1;
if(temp==-1)
temp=23;
break;
case 4:
temp=Read1302(DS1302_WEEK); //讀取星期數
temp=temp-1; //星期數減1
down_flag=1;
if(temp==0)
temp=7;
break;
case 5:
temp=Read1302(DS1302_DAY); //讀取日數
temp=temp-1; //日數減1
down_flag=1;
if(temp==0x10)
temp=0x0a;
if(temp==0x20)
temp=0x1a;
if(temp==0)
temp=0x2b;
break;
case 6:
temp=Read1302(DS1302_MONTH); //讀取月數
temp=temp-1; //月數減1
down_flag=1;
if(temp==0)
temp=12;
break;
case 7:
temp=Read1302(DS1302_YEAR); //讀取年數
temp=temp-1; //年數減1
down_flag=1;
if(temp==-1)
temp=0x85;
break;
default:break;
}
while(Down==0);
//while(wireless_3==1);
}
}
void Setkey()//模式選擇按鍵
{
Set=1;
if(Set==0)//||wireless_4==1)
{
mdelay(8);
count=count+1; //Setkey按一次,count就加1
done=1; //進入調整模式
while(Set==0);
//while(wireless_4==1);
}
}
void keydone()//按鍵功能執行
{ uchar Second;
if(flag==0) //關閉時鐘,停止計時
{ Write1302(0x8e,0x00); //寫入允許
temp=Read1302(0x80);
Write1302(0x80,temp|0x80);
Write1302(0x8e,0x80); //禁止寫入
flag=1;
}
Setkey(); //掃描模式切換按鍵
switch(count)
{case 1:do //count=1,調整秒
{
outkey(); //掃描跳出按鈕
Upkey(); //掃描加按鈕
Downkey(); //掃描減按鈕
if(up_flag==1||down_flag==1) //數據更新，重新寫入新的數據
{
Write1302(0x8e,0x00); //寫入允許
Write1302(0x80,temp|0x80); //寫入新的秒數
Write1302(0x8e,0x80); //禁止寫入
up_flag=0;
down_flag=0;
}
hide_sec++; //位閃計數
if(hide_sec>3)
hide_sec=0;
show_time(); //液晶顯示數據
}while(count==2);break;
case 2:do //count=2,調整分
{
hide_sec=0;
outkey();
Upkey();
Downkey();
if(temp>0x60)
temp=0;
if(up_flag==1||down_flag==1)
{
Write1302(0x8e,0x00); //寫入允許
Write1302(0x82,temp); //寫入新的分數
Write1302(0x8e,0x80); //禁止寫入
up_flag=0;
down_flag=0;
}
hide_min++;
if(hide_min>3)
hide_min=0;
show_time();
}while(count==3);break;
case 3:do //count=3,調整小時
{
hide_min=0;
outkey();
Upkey();
Downkey();
if(up_flag==1||down_flag==1)
{
Write1302(0x8e,0x00); //寫入允許
Write1302(0x84,temp); //寫入新的小時數
Write1302(0x8e,0x80); //禁止寫入
up_flag=0;
down_flag=0;
}
hide_hour++;
if(hide_hour>3)
hide_hour=0;
show_time();
}while(count==4);break;
case 4:do //count=4,調整星期
{
hide_hour=0;
outkey();
Upkey();
Downkey();
if(up_flag==1||down_flag==1)
{
Write1302(0x8e,0x00); //寫入允許
Write1302(0x8a,temp); //寫入新的星期數
Write1302(0x8e,0x80); //禁止寫入
up_flag=0;
down_flag=0;
}
hide_week++;
if(hide_week>3)
hide_week=0;
show_time();
}while(count==5);break;
case 5:do //count=5,調整日
{
hide_week=0;
outkey();
Upkey();
Downkey();
if(up_flag==1||down_flag==1)
{
Write1302(0x8e,0x00); //寫入允許
Write1302(0x86,temp); //寫入新的日數
Write1302(0x8e,0x80); //禁止寫入
up_flag=0;
down_flag=0;
}
hide_day++;
if(hide_day>3)
hide_day=0;
show_time();
}while(count==6);break;
case 6:do //count=6,調整月
{
hide_day=0;
outkey();
Upkey();
Downkey();
if(up_flag==1||down_flag==1)
{
Write1302(0x8e,0x00); //寫入允許
Write1302(0x88,temp); //寫入新的月數
Write1302(0x8e,0x80); //禁止寫入
up_flag=0;
down_flag=0;
}
hide_month++;
if(hide_month>3)
hide_month=0;
show_time();
}while(count==7);break;
case 7:do //count=7,調整年
{
hide_month=0;
outkey();
Upkey();
Downkey();
if(up_flag==1||down_flag==1)
{
Write1302(0x8e,0x00); //寫入允許
Write1302(0x8c,temp); //寫入新的年數
Write1302(0x8e,0x80); //禁止寫入
up_flag=0;
down_flag=0;
}
hide_year++;
if(hide_year>3)
hide_year=0;
show_time();
}while(count==8);break;
case 8: count=0;hide_year=0; //count8, 跳出調整模式,返回默認顯示狀態
Second=Read1302(DS1302_SECOND);
Write1302(0x8e,0x00); //寫入允許
Write1302(0x80,Second&0x7f);
Write1302(0x8E,0x80); //禁止寫入
done=0;
break; //count=7,開啟中斷,標志位置0并退出
default:break;
}
}
void show_time() //液晶顯示程序
{
DS1302_GetTime(&CurrentTime); //獲取時鐘芯片的時間數據
TimeToStr(&CurrentTime); //時間數據轉換液晶字符
DateToStr(&CurrentTime); //日期數據轉換液晶字符
ReadTemp(); //開啟溫度采集程序
temp_to_str(); //溫度數據轉換成液晶字符
GotoXY(12,1); //液晶字符顯示位置
Print(TempBuffer); //顯示溫度
GotoXY(0,1);
Print(CurrentTime.TimeString); //顯示時間
GotoXY(0,0);
Print(CurrentTime.DateString); //顯示日期
GotoXY(15,0);
Print(week_value); //顯示星期
GotoXY(11,0);
Print("Week"); //在液晶上顯示字母 week
Delay1ms(400); //掃描延時
}
main()
{
flag=1; //時鐘停止標志
LCD_Initial(); //液晶初始化
//Init_DS18B20( ) ; //DS18B20初始化
Initial_DS1302(); //時鐘芯片初始化
up_flag=0;
down_flag=0;
done=0; //進入默認液晶顯示
//wireless_1=0;
//wireless_2=0;
//wireless_3=0;
//wireless_4=0;
while(1)
{
while(done==1)
keydone(); //進入調整模式
while(done==0)
{
show_time(); //液晶顯示數據
flag=0;
Setkey(); //掃描各功能鍵
}
}
}

復制代碼

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