失眠网 > 单片机自制时钟（年月日星期时分秒显示按键校准）

单片机自制时钟（年月日星期时分秒显示按键校准）

时间：2018-07-18 09:05:29

单片机自制时钟（可实现年月日星期时分秒显示、按键校准）

单片机自制时钟

/*RS->p1.0;RW->p1.1;EN->p2.5;A->VCC;K->GND*//*K1->P3.4;K2->p3.5;K3->p3.6 *//*晶振11.0592M *//*Edited by Feng *//*/8/8 *//*功能：可显示年、月、日、时分秒、星期 */#include<reg52.h>#include<intrins.h>sbit EN = P2^5;sbit RS = P1^0;sbit RW = P1^1;sbit SET_TIME_BIT_KEY = P3^4;sbit INC_BIT_NUM_KEY = P3^5;sbit END_CHANGE_TIME = P3^6;#define DataPort P0#define RS_CLR RS=0 #define RS_SET RS=1#define RW_CLR RW=0 #define RW_SET RW=1 #define EN_CLR EN=0#define EN_SET EN=1bit ending;int year;unsigned char count,second,minute,hour,date,month,week,display_time[14];unsigned char character[10]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39};unsigned char double_dot[8]={0x00,0x08,0x00,0x00,0x00,0x08,0x00,0x00};unsigned char week_group[7][3]={{'S','u','n'},{'M','o','n'},{'T','u','e'},{'W','e','d'},{'T','h','u'},{'F','r','i'},{'S','a','t'}};unsigned char days_num_this_month[12]={31,28,31,30,31,30,31,31,30,31,30,31};/*------------------------------------------------uS延时函数，含有输入参数 unsigned char t，无返回值unsigned char 是定义无符号字符变量，其值的范围是0~255 这里使用晶振12M，精确延时请使用汇编,大致延时长度如下 T=tx2+5 uS ------------------------------------------------*/void DelayUs2x(unsigned char t){ while(--t);}/*------------------------------------------------mS延时函数，含有输入参数 unsigned char t，无返回值unsigned char 是定义无符号字符变量，其值的范围是0~255 这里使用晶振12M，精确延时请使用汇编------------------------------------------------*/void DelayMs(unsigned char t){while(t--){//大致延时1mSDelayUs2x(245);DelayUs2x(245);}}/*------------------------------------------------判忙函数------------------------------------------------*/bit LCD_Check_Busy(void) { DataPort= 0xFF; RS_CLR; RW_SET; EN_CLR; _nop_(); EN_SET;return (bit)(DataPort & 0x80);}/*------------------------------------------------写入命令函数------------------------------------------------*/void LCD_Write_Com(unsigned char com) { while(LCD_Check_Busy()); //忙则等待RS_CLR; RW_CLR; EN_SET; DataPort= com; _nop_(); EN_CLR;}/*------------------------------------------------写入数据函数------------------------------------------------*/void LCD_Write_Data(unsigned char Data) { while(LCD_Check_Busy()); //忙则等待RS_SET; RW_CLR; EN_SET; DataPort= Data; _nop_();EN_CLR;}/*------------------------------------------------写入字符函数------------------------------------------------*/void LCD_Write_Char(unsigned char x,unsigned char y,unsigned char Data) {if (y == 0) {LCD_Write_Com(0x80 + x);} else {LCD_Write_Com(0xC0 + x);} LCD_Write_Data( Data); }/*------------------------------------------------初始化函数------------------------------------------------*/void LCD_Init(void) {LCD_Write_Com(0x38); /*显示模式设置*/ DelayMs(5); LCD_Write_Com(0x38); DelayMs(5); LCD_Write_Com(0x38); DelayMs(5); LCD_Write_Com(0x38); LCD_Write_Com(0x08); /*显示关闭*/ LCD_Write_Com(0x01); /*显示清屏*/ LCD_Write_Com(0x06); /*显示光标移动设置*/ DelayMs(5); LCD_Write_Com(0x0C); /*显示开及光标设置*/}void TIMER0init(void){TMOD = 0x01;TH0 = 0x4C;TL0 = 0x00;EA = 1;ET0 = 1;TR0 = 1;}void TIMER0process(void) interrupt 1 {void time_transfer(void);TH0=0x4C;TL0=0x00;count--;time_transfer();}void time_transfer(void){if(count==0){count=20;second++;}if(second==60){second=0;minute++;}if(minute==60){minute=0;hour++;}if(hour==24){hour=0;date++;week++;}if(date==1+days_num_this_month[month-1]){date=1;month++;}if(week==7){week=0;}if(month==13){month=1;year++;if(year%4==0)days_num_this_month[1]=29;elsedays_num_this_month[1]=28;}display_time[0]=year/1000;display_time[1]=(year%1000)/100;display_time[2]=((year%1000)%100)/10;display_time[3]=(((year%1000)%100)%10);display_time[4]=month/10;display_time[5]=month%10;display_time[6]=date/10;display_time[7]=date%10;display_time[8]=hour/10;display_time[9]=hour%10;display_time[10]=minute/10;display_time[11]=minute%10;display_time[12]=second/10;display_time[13]=second%10;}void set_init_time(void){year=;month=8;date=8;hour=12;minute=0;second=0;week=0;if(year%4==0){days_num_this_month[1]=29;}display_time[0]=year/1000;display_time[1]=(year%1000)/100;display_time[2]=((year%1000)%100)/10;display_time[3]=(((year%1000)%100)%10);display_time[4]=month/10;display_time[5]=month%10;display_time[6]=date/10;display_time[7]=date%10;display_time[8]=hour/10;display_time[9]=hour%10;display_time[10]=minute/10;display_time[11]=minute%10;display_time[12]=second/10;display_time[13]=second%10;}void LCD_display(void){LCD_Write_Char(1,0,character[display_time[0]]);LCD_Write_Char(2,0,character[display_time[1]]);LCD_Write_Char(3,0,character[display_time[2]]);LCD_Write_Char(4,0,character[display_time[3]]);LCD_Write_Char(6,0,character[display_time[4]]);LCD_Write_Char(7,0,character[display_time[5]]);LCD_Write_Char(9,0,character[display_time[6]]);LCD_Write_Char(10,0,character[display_time[7]]);LCD_Write_Char(4,1,character[display_time[8]]);LCD_Write_Char(5,1,character[display_time[9]]);LCD_Write_Char(7,1,character[display_time[10]]);LCD_Write_Char(8,1,character[display_time[11]]);LCD_Write_Char(10,1,character[display_time[12]]);LCD_Write_Char(11,1,character[display_time[13]]);LCD_Write_Char(12,0,week_group[week][0]);LCD_Write_Char(13,0,week_group[week][1]);LCD_Write_Char(14,0,week_group[week][2]);}void write_diy_character(void){unsigned char index;LCD_Write_Com(0x40);for(index=0;index<8;index++){LCD_Write_Data(double_dot[index]);}LCD_Write_Com(0xC6); //显示地址LCD_Write_Data(0x00); //向DDRAM写入LCD_Write_Com(0xC9); //显示地址LCD_Write_Data(0x00); //向DDRAM写入LCD_Write_Char(5,0,0xB0);LCD_Write_Char(8,0,0xB0);}void delay500ms(void) //误差 -0.000000000068us{unsigned char a,b,c;for(c=98;c>0;c--)for(b=127;b>0;b--)for(a=17;a>0;a--);_nop_(); //if Keil,require use intrins.h}void dislpay_bit_flicker(unsigned bit_num){unsigned char corresponding_line,corresponding_row=0;switch(bit_num){case 0:corresponding_line=1;break;case 1:corresponding_line=2;break;case 2:corresponding_line=3;break;case 3:corresponding_line=4;break;case 4:corresponding_line=6;break;case 5:corresponding_line=7;break;case 6:corresponding_line=9;break;case 7:corresponding_line=10;break;case 8:corresponding_line=4;break;case 9:corresponding_line=5;break;case 10:corresponding_line=7;break;case 11:corresponding_line=8;break;case 12:corresponding_line=10;break;case 13:corresponding_line=11;}if(bit_num>=8)corresponding_row=1;while(SET_TIME_BIT_KEY){LCD_Write_Char(corresponding_line,corresponding_row,character[display_time[bit_num]]);delay500ms();LCD_Write_Char(corresponding_line,corresponding_row,0x5F);delay500ms();if(INC_BIT_NUM_KEY==0){display_time[bit_num]++;if(display_time[bit_num]>9)display_time[bit_num]=0;}if(END_CHANGE_TIME==0){ending=1;break;}}LCD_Write_Char(corresponding_line,corresponding_row,character[display_time[bit_num]]);}void work_from_new_time(void){unsigned char old_date=date;year=display_time[0]*1000+display_time[1]*100+display_time[2]*10+display_time[3];month=display_time[4]*10+display_time[5];date=display_time[6]*10+display_time[7];week=(week+date-old_date)%7;hour=display_time[8]*10+display_time[9];minute=display_time[10]*10+display_time[11];second=display_time[12]*10+display_time[13];}void change_time(void){unsigned char key_press_count=0;while((key_press_count<14)&&(ending==0)){dislpay_bit_flicker(key_press_count);delay500ms();delay500ms();key_press_count++;}work_from_new_time();}void main(void){LCD_Init();//初始化LCDwrite_diy_character();set_init_time();//设置初始时间LCD_display();change_time();TIMER0init();//初始化计时器0while(1){LCD_display();}}

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