/* （Ds1302+LCD1602）*/ #include #include sbit DS1302_CLK=P1^1; sbit DS1302_IO=P1^0; sbit DS1302_RST=P1^2; sbit lcden=P2^2; sbit lcdrw=P2^1; sbit lcdrs=P2^0; #define uchar unsigned char #define uint unsigned int #define RS_CLR lcdrs=0 #define RS_SET lcdrs=1 #define RW_CLR lcdrw=0 #define RW_SET lcdrw=1 #define EN_CLR lcden=0 #define EN_SET lcden=1 #define DataPort P2 unsigned char second,minute,hour,week,day,month,year; unsigned char table[]="0123456789"; //unsigned char table1[]=" "; unsigned char table2[]=" "; unsigned char table3[]="Time: "; unsigned char table4[]="Date: "; unsigned int time[]= { 0x13,0x05,0x18,0x03,0x00,0x00,0x00}; unsigned char receive[3]= {0xff,0xff,0xff}; unsigned char ComBuf[3]= {0x02,0x90,0x08}; uchar num,count,date,shi; void delay(uint z) { uint x,y; for(x=z; x>0; x--) for(y=110; y>0; y--); } 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1mS DelayUs2x(245); DelayUs2x(245); } } //向DS1302送一个字节// void InputByte(unsigned char byte1) { char i; for(i=8; i>0; i--) { DS1302_IO=(bit)(byte1&0x01); DS1302_CLK=1; _nop_(); DS1302_CLK=0; byte1>>=1; } return; } //读DS1302一个字节// unsigned char outputbyte(void) { unsigned char i; unsigned char ucdat=0; for(i=8; i>0; i--) { DS1302_IO=1; ucdat>>=1; if(DS1302_IO)ucdat|=0x80; DS1302_CLK=1; _nop_(); DS1302_CLK=0; } return(ucdat); } //向DS1302某地址写一个字节数据// void write_ds1302(unsigned char addr,unsigned char TDat) { DS1302_RST=0; _nop_(); DS1302_CLK=0; _nop_(); DS1302_RST=1; InputByte(addr); _nop_(); InputByte(TDat); DS1302_CLK=1; _nop_(); DS1302_RST=0; } //读DS1302地址子程序// unsigned char read_ds1302(unsigned char addr) { unsigned char timedata; DS1302_RST=0; _nop_(); DS1302_CLK=0; _nop_(); DS1302_RST=1; InputByte(addr); timedata=outputbyte(); DS1302_CLK=1; _nop_(); DS1302_RST=0; return(timedata); } //DS1302的初始化// void initial_ds1302() { write_ds1302(0x8e,0x00);//写保护寄存器 write_ds1302(0x8c,time[0]);//年 write_ds1302(0x88,time[1]);//月 write_ds1302(0x86,time[2]);//日 write_ds1302(0x8A,time[3]);//星期 write_ds1302(0x84,time[4]);//时 write_ds1302(0x82,time[5]);//分 write_ds1302(0x80,time[6]);//秒 write_ds1302(0x8e,0x80);//写保护寄存器 } //读DS1302时间// void read_time() { second=read_ds1302(0x81); minute=read_ds1302(0x83); hour=read_ds1302(0x85); week=read_ds1302(0x8B); day=read_ds1302(0x87); month=read_ds1302(0x89); year=read_ds1302(0x8d); } //液晶显示程序// void write_com(uchar com)//写指令// { lcdrs=0; lcdrw=0; P0=com; delay(5); lcden=1; delay(5); lcden=0; } void write_data(uchar date) //写数据// { lcdrs=1; lcdrw=0; P0=date; delay(5); lcden=1; delay(5); lcden=0; } void init() { lcden=0; write_com(0x38); //置初值// write_com(0x0c); write_com(0x06); write_com(0x81); } void Display(void) { num=0; count=0; for(date=0; date<6; date++) { write_data(table3[date]); } //write_com(0x81); write_data(table[hour/16]); //写第1行数据// write_data(table[hour%16]); write_data(':'); write_data(table[minute/16]); write_data(table[minute%16]); write_data(':'); write_data(table[second/16]); write_data(table[second%16]); //write_com(0x01); write_com(0x80+0x41); for(shi=0; shi<6; shi++) { write_data(table4[shi]); } write_data(table[year/16]); write_data(table[year%16]); write_data('-'); write_data(table[month/16]); write_data(table[month%16]); write_data('-'); write_data(table[day/16]); write_data(table[day%16]); write_com(0x80); for(count=0; count<16; count++); { write_data(table2[count]); } } /*------------------------------------------------ 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; } /*------------------------------------------------ 清屏函数 ------------------------------------------------*/ void LCD_Clear(void) { LCD_Write_Com(0x01); DelayMs(5); } /*------------------------------------------------ 写入字符串函数 ------------------------------------------------*/ void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s) { if (y == 0) { LCD_Write_Com(0x80 + x); //表示第一行 } else { LCD_Write_Com(0xC0 + x); //表示第二行 } while (*s) { LCD_Write_Data( *s); s ++; } } /*------------------------------------------------ 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 lcdxxmain(void) { LCD_Write_Char(7,0,'0'); LCD_Write_Char(8,0,'0'); LCD_Write_String(1,1,"cumt j1b201"); } void lcdshizhongmain(void) { read_time(); Display(); } void main(void) { int i,j; initial_ds1302(); init(); while(1) { for(i=0; i<100; i++) { lcdshizhongmain(); } LCD_Init(); LCD_Clear();//清屏 for(j=0; j<10000; j++) { lcdxxmain(); } } }