DS1302时钟
main.c
#include <REGX52.H>
#include "LCD1602.h"
#include "DS1302.h"void main()
{LCD_Init();DS1302_Init();LCD_ShowString(1,1," - - ");//静态字符初始化显示LCD_ShowString(2,1," : : ");DS1302_SetTime();//设置时间while(1){DS1302_ReadTime();//读取时间LCD_ShowNum(1,1,DS1302_Time[0],2);//显示年LCD_ShowNum(1,4,DS1302_Time[1],2);//显示月LCD_ShowNum(1,7,DS1302_Time[2],2);//显示日LCD_ShowNum(2,1,DS1302_Time[3],2);//显示时LCD_ShowNum(2,4,DS1302_Time[4],2);//显示分LCD_ShowNum(2,7,DS1302_Time[5],2);//显示秒}
}
LCD1602.c
#include <REGX52.H>//引脚配置:
sbit LCD_RS=P2^6;
sbit LCD_RW=P2^5;
sbit LCD_EN=P2^7;
#define LCD_DataPort P0//函数定义:
/*** @brief LCD1602延时函数,12MHz调用可延时1ms* @param 无* @retval 无*/
void LCD_Delay()
{unsigned char i, j;i = 2;j = 239;do{while (--j);} while (--i);
}/*** @brief LCD1602写命令* @param Command 要写入的命令* @retval 无*/
void LCD_WriteCommand(unsigned char Command)
{LCD_RS=0;LCD_RW=0;LCD_DataPort=Command;LCD_EN=1;LCD_Delay();LCD_EN=0;LCD_Delay();
}/*** @brief LCD1602写数据* @param Data 要写入的数据* @retval 无*/
void LCD_WriteData(unsigned char Data)
{LCD_RS=1;LCD_RW=0;LCD_DataPort=Data;LCD_EN=1;LCD_Delay();LCD_EN=0;LCD_Delay();
}/*** @brief LCD1602设置光标位置* @param Line 行位置,范围:1~2* @param Column 列位置,范围:1~16* @retval 无*/
void LCD_SetCursor(unsigned char Line,unsigned char Column)
{if(Line==1){LCD_WriteCommand(0x80|(Column-1));}else if(Line==2){LCD_WriteCommand(0x80|(Column-1+0x40));}
}/*** @brief LCD1602初始化函数* @param 无* @retval 无*/
void LCD_Init()
{LCD_WriteCommand(0x38);//八位数据接口,两行显示,5*7点阵LCD_WriteCommand(0x0c);//显示开,光标关,闪烁关LCD_WriteCommand(0x06);//数据读写操作后,光标自动加一,画面不动LCD_WriteCommand(0x01);//光标复位,清屏
}/*** @brief 在LCD1602指定位置上显示一个字符* @param Line 行位置,范围:1~2* @param Column 列位置,范围:1~16* @param Char 要显示的字符* @retval 无*/
void LCD_ShowChar(unsigned char Line,unsigned char Column,char Char)
{LCD_SetCursor(Line,Column);LCD_WriteData(Char);
}/*** @brief 在LCD1602指定位置开始显示所给字符串* @param Line 起始行位置,范围:1~2* @param Column 起始列位置,范围:1~16* @param String 要显示的字符串* @retval 无*/
void LCD_ShowString(unsigned char Line,unsigned char Column,char *String)
{unsigned char i;LCD_SetCursor(Line,Column);for(i=0;String[i]!='\0';i++){LCD_WriteData(String[i]);}
}/*** @brief 返回值=X的Y次方*/
int LCD_Pow(int X,int Y)
{unsigned char i;int Result=1;for(i=0;i<Y;i++){Result*=X;}return Result;
}/*** @brief 在LCD1602指定位置开始显示所给数字* @param Line 起始行位置,范围:1~2* @param Column 起始列位置,范围:1~16* @param Number 要显示的数字,范围:0~65535* @param Length 要显示数字的长度,范围:1~5* @retval 无*/
void LCD_ShowNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{unsigned char i;LCD_SetCursor(Line,Column);for(i=Length;i>0;i--){LCD_WriteData(Number/LCD_Pow(10,i-1)%10+'0');}
}/*** @brief 在LCD1602指定位置开始以有符号十进制显示所给数字* @param Line 起始行位置,范围:1~2* @param Column 起始列位置,范围:1~16* @param Number 要显示的数字,范围:-32768~32767* @param Length 要显示数字的长度,范围:1~5* @retval 无*/
void LCD_ShowSignedNum(unsigned char Line,unsigned char Column,int Number,unsigned char Length)
{unsigned char i;unsigned int Number1;LCD_SetCursor(Line,Column);if(Number>=0){LCD_WriteData('+');Number1=Number;}else{LCD_WriteData('-');Number1=-Number;}for(i=Length;i>0;i--){LCD_WriteData(Number1/LCD_Pow(10,i-1)%10+'0');}
}/*** @brief 在LCD1602指定位置开始以十六进制显示所给数字* @param Line 起始行位置,范围:1~2* @param Column 起始列位置,范围:1~16* @param Number 要显示的数字,范围:0~0xFFFF* @param Length 要显示数字的长度,范围:1~4* @retval 无*/
void LCD_ShowHexNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{unsigned char i,SingleNumber;LCD_SetCursor(Line,Column);for(i=Length;i>0;i--){SingleNumber=Number/LCD_Pow(16,i-1)%16;if(SingleNumber<10){LCD_WriteData(SingleNumber+'0');}else{LCD_WriteData(SingleNumber-10+'A');}}
}/*** @brief 在LCD1602指定位置开始以二进制显示所给数字* @param Line 起始行位置,范围:1~2* @param Column 起始列位置,范围:1~16* @param Number 要显示的数字,范围:0~1111 1111 1111 1111* @param Length 要显示数字的长度,范围:1~16* @retval 无*/
void LCD_ShowBinNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{unsigned char i;LCD_SetCursor(Line,Column);for(i=Length;i>0;i--){LCD_WriteData(Number/LCD_Pow(2,i-1)%2+'0');}
}
LDC1602.h
#ifndef __LCD1602_H__
#define __LCD1602_H__//用户调用函数:
void LCD_Init();
void LCD_ShowChar(unsigned char Line,unsigned char Column,char Char);
void LCD_ShowString(unsigned char Line,unsigned char Column,char *String);
void LCD_ShowNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length);
void LCD_ShowSignedNum(unsigned char Line,unsigned char Column,int Number,unsigned char Length);
void LCD_ShowHexNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length);
void LCD_ShowBinNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length);
#endif
DS1302.c
#include <REGX52.H>//引脚定义
sbit DS1302_SCLK=P3^6;
sbit DS1302_IO=P3^4;
sbit DS1302_CE=P3^5;//寄存器写入地址/指令定义
#define DS1302_SECOND 0x80
#define DS1302_MINUTE 0x82
#define DS1302_HOUR 0x84
#define DS1302_DATE 0x86
#define DS1302_MONTH 0x88
#define DS1302_DAY 0x8A
#define DS1302_YEAR 0x8C
#define DS1302_WP 0x8E//时间数组,索引0~6分别为年、月、日、时、分、秒、星期
unsigned char DS1302_Time[]={23,10,30,20,15,00,1};/*** @brief DS1302初始化* @param 无* @retval 无*/
void DS1302_Init(void)
{DS1302_CE=0;DS1302_SCLK=0;
}/*** @brief DS1302写一个字节* @param Command 命令字/地址* @param Data 要写入的数据* @retval 无*/
void DS1302_WriteByte(unsigned char Command,Data)
{unsigned char i;DS1302_CE=1;for(i=0;i<8;i++){DS1302_IO=Command&(0x01<<i);DS1302_SCLK=1;DS1302_SCLK=0;}for(i=0;i<8;i++){DS1302_IO=Data&(0x01<<i);DS1302_SCLK=1;DS1302_SCLK=0;}DS1302_CE=0;
}/*** @brief DS1302读一个字节* @param Command 命令字/地址* @retval 读出的数据*/
unsigned char DS1302_ReadByte(unsigned char Command)
{unsigned char i,Data=0x00;Command|=0x01; //将指令转换为读指令DS1302_CE=1;for(i=0;i<8;i++){DS1302_IO=Command&(0x01<<i);DS1302_SCLK=0;DS1302_SCLK=1;}for(i=0;i<8;i++){DS1302_SCLK=1;DS1302_SCLK=0;if(DS1302_IO){Data|=(0x01<<i);}}DS1302_CE=0;DS1302_IO=0; //读取后将IO设置为0,否则读出的数据会出错return Data;
}/*** @brief DS1302设置时间,调用之后,DS1302_Time数组的数字会被设置到DS1302中* @param 无* @retval 无*/
void DS1302_SetTime(void)
{DS1302_WriteByte(DS1302_WP,0x00);DS1302_WriteByte(DS1302_YEAR,DS1302_Time[0]/10*16+DS1302_Time[0]%10);//十进制转BCD码后写入DS1302_WriteByte(DS1302_MONTH,DS1302_Time[1]/10*16+DS1302_Time[1]%10);DS1302_WriteByte(DS1302_DATE,DS1302_Time[2]/10*16+DS1302_Time[2]%10);DS1302_WriteByte(DS1302_HOUR,DS1302_Time[3]/10*16+DS1302_Time[3]%10);DS1302_WriteByte(DS1302_MINUTE,DS1302_Time[4]/10*16+DS1302_Time[4]%10);DS1302_WriteByte(DS1302_SECOND,DS1302_Time[5]/10*16+DS1302_Time[5]%10);DS1302_WriteByte(DS1302_DAY,DS1302_Time[6]/10*16+DS1302_Time[6]%10);DS1302_WriteByte(DS1302_WP,0x80);
}/*** @brief DS1302读取时间,调用之后,DS1302中的数据会被读取到DS1302_Time数组中* @param 无* @retval 无*/
void DS1302_ReadTime(void)
{unsigned char Temp;Temp=DS1302_ReadByte(DS1302_YEAR);DS1302_Time[0]=Temp/16*10+Temp%16;//BCD码转十进制后读取Temp=DS1302_ReadByte(DS1302_MONTH);DS1302_Time[1]=Temp/16*10+Temp%16;Temp=DS1302_ReadByte(DS1302_DATE);DS1302_Time[2]=Temp/16*10+Temp%16;Temp=DS1302_ReadByte(DS1302_HOUR);DS1302_Time[3]=Temp/16*10+Temp%16;Temp=DS1302_ReadByte(DS1302_MINUTE);DS1302_Time[4]=Temp/16*10+Temp%16;Temp=DS1302_ReadByte(DS1302_SECOND);DS1302_Time[5]=Temp/16*10+Temp%16;Temp=DS1302_ReadByte(DS1302_DAY);DS1302_Time[6]=Temp/16*10+Temp%16;
}
LCD1302.h
#ifndef __DS1302_H__
#define __DS1302_H__//外部可调用时间数组,索引0~6分别为年、月、日、时、分、秒、星期
extern unsigned char DS1302_Time[];void DS1302_Init(void);
void DS1302_WriteByte(unsigned char Command,Data);
unsigned char DS1302_ReadByte(unsigned char Command);
void DS1302_SetTime(void);
void DS1302_ReadTime(void);#endif
可调时钟
#include <REGX52.H>
#include "LCD1602.h"
#include "DS1302.h"
#include "Key.h"
#include "Timer0.h"unsigned char KeyNum,MODE,TimeSetSelect,TimeSetFlashFlag;void TimeShow(void)//时间显示功能
{DS1302_ReadTime();//读取时间LCD_ShowNum(1,1,DS1302_Time[0],2);//显示年LCD_ShowNum(1,4,DS1302_Time[1],2);//显示月LCD_ShowNum(1,7,DS1302_Time[2],2);//显示日LCD_ShowNum(2,1,DS1302_Time[3],2);//显示时LCD_ShowNum(2,4,DS1302_Time[4],2);//显示分LCD_ShowNum(2,7,DS1302_Time[5],2);//显示秒
}void TimeSet(void)//时间设置功能
{if(KeyNum==2)//按键2按下{TimeSetSelect++;//设置选择位加1TimeSetSelect%=6;//越界清零}if(KeyNum==3)//按键3按下{DS1302_Time[TimeSetSelect]++;//时间设置位数值加1if(DS1302_Time[0]>99){DS1302_Time[0]=0;}//年越界判断if(DS1302_Time[1]>12){DS1302_Time[1]=1;}//月越界判断if( DS1302_Time[1]==1 || DS1302_Time[1]==3 || DS1302_Time[1]==5 || DS1302_Time[1]==7 || DS1302_Time[1]==8 || DS1302_Time[1]==10 || DS1302_Time[1]==12)//日越界判断{if(DS1302_Time[2]>31){DS1302_Time[2]=1;}//大月}else if(DS1302_Time[1]==4 || DS1302_Time[1]==6 || DS1302_Time[1]==9 || DS1302_Time[1]==11){if(DS1302_Time[2]>30){DS1302_Time[2]=1;}//小月}else if(DS1302_Time[1]==2){if(DS1302_Time[0]%4==0){if(DS1302_Time[2]>29){DS1302_Time[2]=1;}//闰年2月}else{if(DS1302_Time[2]>28){DS1302_Time[2]=1;}//平年2月}}if(DS1302_Time[3]>23){DS1302_Time[3]=0;}//时越界判断if(DS1302_Time[4]>59){DS1302_Time[4]=0;}//分越界判断if(DS1302_Time[5]>59){DS1302_Time[5]=0;}//秒越界判断}if(KeyNum==4)//按键3按下{DS1302_Time[TimeSetSelect]--;//时间设置位数值减1if(DS1302_Time[0]<0){DS1302_Time[0]=99;}//年越界判断if(DS1302_Time[1]<1){DS1302_Time[1]=12;}//月越界判断if( DS1302_Time[1]==1 || DS1302_Time[1]==3 || DS1302_Time[1]==5 || DS1302_Time[1]==7 || DS1302_Time[1]==8 || DS1302_Time[1]==10 || DS1302_Time[1]==12)//日越界判断{if(DS1302_Time[2]<1){DS1302_Time[2]=31;}//大月if(DS1302_Time[2]>31){DS1302_Time[2]=1;}}else if(DS1302_Time[1]==4 || DS1302_Time[1]==6 || DS1302_Time[1]==9 || DS1302_Time[1]==11){if(DS1302_Time[2]<1){DS1302_Time[2]=30;}//小月if(DS1302_Time[2]>30){DS1302_Time[2]=1;}}else if(DS1302_Time[1]==2){if(DS1302_Time[0]%4==0){if(DS1302_Time[2]<1){DS1302_Time[2]=29;}//闰年2月if(DS1302_Time[2]>29){DS1302_Time[2]=1;}}else{if(DS1302_Time[2]<1){DS1302_Time[2]=28;}//平年2月if(DS1302_Time[2]>28){DS1302_Time[2]=1;}}}if(DS1302_Time[3]<0){DS1302_Time[3]=23;}//时越界判断if(DS1302_Time[4]<0){DS1302_Time[4]=59;}//分越界判断if(DS1302_Time[5]<0){DS1302_Time[5]=59;}//秒越界判断}//更新显示,根据TimeSetSelect和TimeSetFlashFlag判断可完成闪烁功能if(TimeSetSelect==0 && TimeSetFlashFlag==1){LCD_ShowString(1,1," ");}else {LCD_ShowNum(1,1,DS1302_Time[0],2);}if(TimeSetSelect==1 && TimeSetFlashFlag==1){LCD_ShowString(1,4," ");}else {LCD_ShowNum(1,4,DS1302_Time[1],2);}if(TimeSetSelect==2 && TimeSetFlashFlag==1){LCD_ShowString(1,7," ");}else {LCD_ShowNum(1,7,DS1302_Time[2],2);}if(TimeSetSelect==3 && TimeSetFlashFlag==1){LCD_ShowString(2,1," ");}else {LCD_ShowNum(2,1,DS1302_Time[3],2);}if(TimeSetSelect==4 && TimeSetFlashFlag==1){LCD_ShowString(2,4," ");}else {LCD_ShowNum(2,4,DS1302_Time[4],2);}if(TimeSetSelect==5 && TimeSetFlashFlag==1){LCD_ShowString(2,7," ");}else {LCD_ShowNum(2,7,DS1302_Time[5],2);}
}void main()
{LCD_Init();DS1302_Init();Timer0Init();LCD_ShowString(1,1," - - ");//静态字符初始化显示LCD_ShowString(2,1," : : ");DS1302_SetTime();//设置时间while(1){KeyNum=Key();//读取键码if(KeyNum==1)//按键1按下{if(MODE==0){MODE=1;TimeSetSelect=0;}//功能切换else if(MODE==1){MODE=0;DS1302_SetTime();}}switch(MODE)//根据不同的功能执行不同的函数{case 0:TimeShow();break;case 1:TimeSet();break;}}
}void Timer0_Routine() interrupt 1
{static unsigned int T0Count;TL0 = 0x18; //设置定时初值TH0 = 0xFC; //设置定时初值T0Count++;if(T0Count>=500)//每500ms进入一次{T0Count=0;TimeSetFlashFlag=!TimeSetFlashFlag;//闪烁标志位取反}
}
key.c
#include <REGX52.H>
#include "Delay.h"/*** @brief 获取独立按键键码* @param 无* @retval 按下按键的键码,范围:0~4,无按键按下时返回值为0*/
unsigned char Key()
{unsigned char KeyNumber=0;if(P3_1==0){Delay(20);while(P3_1==0);Delay(20);KeyNumber=1;}if(P3_0==0){Delay(20);while(P3_0==0);Delay(20);KeyNumber=2;}if(P3_2==0){Delay(20);while(P3_2==0);Delay(20);KeyNumber=3;}if(P3_3==0){Delay(20);while(P3_3==0);Delay(20);KeyNumber=4;}return KeyNumber;
}
key.h
#ifndef __KEY_H__
#define __KEY_H__unsigned char Key();#endif
Timer0.c
#include <REGX52.H>/*** @brief 定时器0初始化,1毫秒@12.000MHz* @param 无* @retval 无*/
void Timer0Init(void)
{TMOD &= 0xF0; //设置定时器模式TMOD |= 0x01; //设置定时器模式TL0 = 0x18; //设置定时初值TH0 = 0xFC; //设置定时初值TF0 = 0; //清除TF0标志TR0 = 1; //定时器0开始计时ET0=1;EA=1;PT0=0;
}/*定时器中断函数模板
void Timer0_Routine() interrupt 1
{static unsigned int T0Count;TL0 = 0x18; //设置定时初值TH0 = 0xFC; //设置定时初值T0Count++;if(T0Count>=1000){T0Count=0;}
}
*/
Timer0.h
#ifndef __TIMER0_H__
#define __TIMER0_H__void Timer0Init(void);#endif