毕业论文 - 数字温度计的设计(7)

附录一 源程序代码

#include #include #define uint unsigned int #define uchar unsigned char

sbit DS1302_CLK = P3^6; //实时时钟时钟线引脚 sbit DS1302_IO = P3^4; //实时时钟数据线引脚 sbit DS1302_RST = P3^5; //实时时钟复位线引脚 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,时到日,月,年位闪的计数

sbit Set = P2^3; //模式切换键 sbit Up = P2^4; //加法按钮 sbit Down = P2^5; //减法按钮

sbit out = P2^6; //立刻跳出调整模式按钮 sbit DQ = P3^7; //温度传送数据IO口 sbit led=P2^7;

uchar dat[4]={0,0,0,0};

char done,count,temp,flag,up_flag,down_flag; // uchar temp_value; //温度值

uchar TempBuffer[5],week_value[2]; //

void show_time(); //液晶显示程序

/***********1602液晶显示部分子程序****************/

//Port Definitions********************************************************** sbit LcdRs = P2^0; sbit LcdRw = P2^1; sbit LcdEn = P2^2; sfr DBPort = 0x80; //P0=0x80,P1=0x90,P2=0xA0,P3=0xB0.数据端口 //内部等待函数************************************************************************** unsigned char LCD_Wait(void) { LcdRs=0; LcdRw=1; _nop_(); LcdEn=1; _nop_(); LcdEn=0; return DBPort;

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} //向LCD写入命令或数************************************************************ #define LCD_COMMAND 0 // Command #define LCD_DATA 1 // Data #define LCD_CLEAR_SCREEN 0x01 // 清屏 #define LCD_HOMING 0x02 // 光标返回原点 void LCD_Write(bit style, unsigned char input) { LcdEn=0; LcdRs=style; LcdRw=0; _nop_(); DBPort=input; _nop_();//注意顺序 LcdEn=1; _nop_();//注意顺序 LcdEn=0; _nop_(); LCD_Wait(); }

//设置显示模式************************************************************ #define LCD_SHOW 0x04 //显示开 #define LCD_HIDE 0x00 //显示关

#define LCD_CURSOR 0x02 //显示光标 #define LCD_NO_CURSOR 0x00 //无光标

#define LCD_FLASH 0x01 //光标闪动 #define LCD_NO_FLASH 0x00 //光标不闪动

void LCD_SetDisplay(unsigned char DisplayMode) { LCD_Write(LCD_COMMAND, 0x08|DisplayMode); }

//设置输入模式************************************************************ #define LCD_AC_UP 0x02 #define LCD_AC_DOWN 0x00 // default

#define LCD_MOVE 0x01 // 画面可平移 #define LCD_NO_MOVE 0x00 //default

void LCD_SetInput(unsigned char InputMode) { LCD_Write(LCD_COMMAND, 0x04|InputMode); }

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据

//初始化LCD************************************************************ void LCD_Initial() { LcdEn=0; LCD_Write(LCD_COMMAND,0x38); //8位数据端口,2行显示,5*7点阵 LCD_Write(LCD_COMMAND,0x38); LCD_SetDisplay(LCD_SHOW|LCD_NO_CURSOR); //开启显示, 无光标 LCD_Write(LCD_COMMAND,LCD_CLEAR_SCREEN); //清屏 LCD_SetInput(LCD_AC_UP|LCD_NO_MOVE); //AC递增, 画面不动 }

//液晶字符输入的位置************************ 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)); }

//将字符输出到液晶显示 void Print(unsigned char *str) { while(*str!='\\0')//while(*str!='\\0') { LCD_Write(LCD_DATA,*str); str++; } }

/***********DS1302时钟部分子程序******************/ typedef struct SYSTEMTIME { unsigned char Second; unsigned char Minute; unsigned char Hour; unsigned char Week; unsigned char Day;

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unsigned char Month; unsigned char Year; unsigned char DateString[11]; unsigned char TimeString[9]; }SYSTEMTIME; //定义的时间类型 SYSTEMTIME CurrentTime; //

#define AM(X) X #define PM(X) (X+12) #define DS1302_SECOND 0x80 #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) {

unsigned char i; ACC = d;

for(i=8; i>0; i--) {

DS1302_IO = ACC0; DS1302_CLK = 1; DS1302_CLK = 0; ACC = ACC >> 1; } }

unsigned char DS1302OutputByte(void) {

unsigned char i; for(i=8; i>0; i--) {

ACC = ACC >>1; ACC7 = DS1302_IO; DS1302_CLK = 1; DS1302_CLK = 0; }

return(ACC); }

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// 转成24小时制

//时钟芯片的寄存器位置,存放时间//实时时钟写入一字节(内部函数) //相当于汇编中的 RRC //实时时钟读取一字节(内部函数) //相当于汇编中的 RRC 30

void Write1302(unsigned char ucAddr, unsigned char ucDa) //ucAddr: DS1302地址, ucData: 要写的数据 {

DS1302_RST = 0; DS1302_CLK = 0; DS1302_RST = 1;

DS1302InputByte(ucAddr); // 地址，命令 DS1302InputByte(ucDa); // 写1Byte数据 DS1302_CLK = 1; DS1302_RST = 0; }

unsigned char Read1302(unsigned char ucAddr) //读取DS1302某地址的数据 {

unsigned char ucData; DS1302_RST = 0; DS1302_CLK = 0; DS1302_RST = 1;

DS1302InputByte(ucAddr|0x01); // 地址，命令 ucData = DS1302OutputByte(); // 读1Byte数据 DS1302_CLK = 1; DS1302_RST = 0; return(ucData); }

void DS1302_GetTime(SYSTEMTIME *Time) //获取时钟芯片的时钟数据到自定义的结构型数组 { 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);

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