基于单片机的秒表设计(9页).docx

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1、-基于单片机的秒表设计-第 9 页* 操作描述：* 1.按Switch键可以启动或停止秒表走表，首次按会清零记录次数* 2.秒表走表期间，按RecorRead按键可以记录当前时间（不影响秒表走表）* 3.按Reset键，表值清零，按RecordRead键可以回读此前记录的对应次数与时间* 4.按TimeMove进入秒表时间设置模式，连按可以移动光标到对应位（限秒以上），* 只在该模式下按TimeUp键才可以累加数值，该模式下按Switch可以开始计时，* 按Reset可以退出，计时到设定值后声光提示* 时间：2016-04-19* 硬件描述：* 主芯片：stc89c51* 显示器件：lcd16

2、02* 时间：2016-04-19#include #include #define uchar unsigned char#define uint unsigned int #define DelayNOP() _nop_();_nop_();_nop_();_nop_();#define timer0_DISABLE() TR0 = 0 /关闭定时器0#define timer0_ENABLE() TR0 = 1/开启定时器0bit LCD_Busy_Check();void LCD_Initialize();void LCD_Set_POS(uchar);void LCD_Write_C

3、ommand(uchar);void LCD_Write_Data(uchar);void Display_String(uchar*str,uchar LineNo);void LCD1602_Display(); sbit Key_Switch = P10;/秒表启动与停止按键sbit Key_Reset = P11;/秒表复位清零按键sbit Key_RecordRead = P12;/记录时间与回读sbit Key_TimeMove = P13;/时间设置光标移动sbit Key_TimeUp = P14;/时间设置增加sbit LCD_RS = P20;sbit LCD_RW = P

4、21;sbit LCD_EN = P22;sbit BEEP_LED = P27;bit KeySwitch = 0;bit TimeSetMode = 0;bit TimeMode = 0;uchar KeyRecord = 0;/uchar KeyTimeNum =0;uint KeyTimeSet = 0;uint onems = 0;const uchar code msg11016 =Record Mum 0,Record Mum 1,Record Mum 2,Record Mum 3,Record Mum 4,Record Mum 5,Record Mum 6,Record Mum

5、 7,Record Mum 8,Record Mum 9,const uchar code msg216 = TimerMode ;uchar Time_Buffer = 0,0,0,0;uchar TimeSet_Buffer = 0,0,0,0,;uchar LCD_Display_Buffer = 00:00:00:00; /该数组有7个元素4个00+3个： | | |1hour_ | | |1min_ | |1s_ |10ms_ 数组排列与显示顺序相反uchar Time_Read104= 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0

6、,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0,/*毫秒延时函数*/void DelayMS(uint ms) uchar t; while(ms-) for (t=0;t 5) TimeSet_Buffer1 = TimeSet_Buffer1 % 10;/十位数清零，保留个位数 break;/*min设置*/ case 3: TimeSet_Buffer2 = TimeSet_Buffer2 + 1; if(TimeSet_Buffer2 % 10 = 0 ) TimeSet_Buffer2 = TimeSet_Buffer2 % 10;break; ca

7、se 4: TimeSet_Buffer2 = TimeSet_Buffer2 + 10;if(TimeSet_Buffer2 / 10 5) TimeSet_Buffer2 = TimeSet_Buffer2 % 10; break; /*hour设置*/ case 5: TimeSet_Buffer3 = TimeSet_Buffer3 + 1;if(TimeSet_Buffer3 % 10 = 0 ) TimeSet_Buffer3 = TimeSet_Buffer3 % 10; break;case 6: TimeSet_Buffer3 = TimeSet_Buffer3 + 10;i

8、f(TimeSet_Buffer3 / 10 9) TimeSet_Buffer3 = TimeSet_Buffer3 % 10; break; default: break; for(i=0;i4;i+) Time_Bufferi = TimeSet_Bufferi;void main() uchar i,KeyReset; uchar times; IE =0x82; TMOD = 0x01; TH0 = (65536- 1000) / 256; TL0 = (65536- 1000) % 256; LCD_Initialize(); Display_String(msg10,0x00);

9、 while(1) /*开关键*/ if( Key_Switch = 0 ) DelayMS(10); KeySwitch = KeySwitch; KeyReset = 0; if(TimeSetMode=1) KeyTimeSet = 0; TimeSetMode= 0; TimeMode = 1; for(i=0;i4;i+) Time_Bufferi = 0; DelayMS(1); if(KeySwitch = 0 ) timer0_DISABLE(); else timer0_ENABLE(); while (Key_Switch = 0); /*复位键*/ else if(Key

10、_Reset = 0) DelayMS(10); timer0_DISABLE(); times = KeyRecord; KeyReset = 1; KeyRecord = 0; KeySwitch = 0; TimeSetMode= 0; KeyTimeSet = 0; BEEP_LED = 1; for(i=0;i4;i+) Time_Bufferi = 0; Display_String(msg1times,0); while (Key_Reset = 0); /*记录及回读键*/ else if(Key_RecordRead = 0) if(KeySwitch = 1) for(i=

11、0;i4;i+) Time_ReadKeyRecordi = Time_Bufferi; KeyRecord+; if(KeyRecord = 10)KeyRecord = 0; else if(KeySwitch = 0) DelayMS(10); if(KeyReset = 1) for(i=0;i times) KeyRecord = 0;if(KeyRecord = 10) KeyRecord = 0;Display_String(msg1KeyRecord,0);while (Key_RecordRead = 0); /*光标移动键*/ else if(Key_TimeMove =

12、0) DelayMS(10); TimeSetMode = 1;/ KeyTimeSet+; if(KeyTimeSet 6) KeyTimeSet = 1; Display_String(msg2,0); while (Key_TimeMove = 0); /*时间值设定键*/ else if(Key_TimeUp = 0) DelayMS(10); if(TimeSetMode = 1) TimeChange(); while (Key_TimeUp = 0); TimeSet(); LCD1602_Display(); /*lcd1602显示当前时间函数*/void LCD1602_Di

13、splay() uchar i; LCD_Set_POS(0x40); for(i=3;i != 0xff;i-) LCD_Display_Buffer2*i+1 = Time_Bufferi / 10 + 0; LCD_Display_Buffer2*i = Time_Bufferi % 10 + 0; LCD_Write_Data( LCD_Display_Buffer2*i+1 ); LCD_Write_Data( LCD_Display_Buffer2*i );if(i0) LCD_Write_Data(:);/*LCD1602初始化*/void LCD_Initialize() De

14、layMS(5); LCD_Write_Command(0x38); DelayMS(5); LCD_Write_Command(0x0c); DelayMS(5); LCD_Write_Command(0x06); DelayMS(5); LCD_Write_Command(0x01); DelayMS(5);/*LCD1602显示位置*/void LCD_Set_POS(uchar Position) LCD_Write_Command(Position | 0x80);/*LCD1602显示字符串*/void Display_String(uchar*str,uchar LineNo)

15、uchar k; LCD_Set_POS(LineNo); for (k=0;k16;k+) LCD_Write_Data (strk);/*LCD1602忙状态检测*/bit LCD_Busy_Check() bit Result; LCD_RS = 0; LCD_RW = 1; LCD_EN = 1; DelayNOP(); Result = (bit)(P0&0x80); LCD_EN = 0; return Result;/*LCD1602写命令*/void LCD_Write_Command(uchar cmd) while (LCD_Busy_Check(); LCD_RS = 0; LCD_RW = 0; LCD_EN = 0; _nop_(); _nop_(); P0 = cmd; DelayNOP(); LCD_EN = 1; DelayNOP(); LCD_EN = 0;/*LCD1602写数据*/void LCD_Write_Data(uchar str) while (LCD_Busy_Check() ; LCD_RS = 1; LCD_RW = 0; LCD_EN = 0; P0 = str; DelayNOP(); LCD_EN = 1; DelayNOP(); LCD_EN = 0;硬件图：