LCD12864显示实时时钟例程可运行

DS1302是美国DALLAS公司推出的一种高性能、低功耗的实时时钟芯片，附加31字节静态RAM，采用SPI三线接口与CPU进行同步通信，并可采用突发方式一次传送多个字节的时钟信号和RAM数据。实时时钟可提供秒、分、时、日、星期、月和年，一个月小与31天时可以自动调整，且具有闰年补偿功能。下面是一段12864液晶显示实时时钟的程序：/*时间：2012.11.30晶振：11.0592MHz芯片：STC89C52RC功能描述：在12864上显示年、月、日、星期、时、分和秒等时间信息*/ #include#define uchar unsigned charsbit CLK=P14; /DS1302引脚定义sbit IO=P15;sbit CE=P16;sbit ACC0=ACC0;sbit ACC7=ACC7; sbit RS=P24; /12864引脚定义 数据口为P0sbit RW=P25;sbit EN=P26;sbit PSB=P21;sbit RET=P23;void Input_1byte(uchar TD)/DS1302输入一字节数据uchar i;ACC=TD;for(i=8;i0;i-)IO=ACC0;CLK=1;CLK=0;ACC=ACC1;uchar Output_1byte(void) /DS1302输出一字节数据uchar i;for(i=8;i0;i-)ACC=ACC1;ACC7=IO;CLK=1;CLK=0;return(ACC); void Write_DS1302(uchar add,uchar dat)/向DS1302写CE=0;CLK=0;CE=1;Input_1byte(add);Input_1byte(dat);CE=0; uchar Read_DS1302(uchar add)/从DS1302读uchar inf; /信息临时存储变量CE=0;CLK=0;CE=1;Input_1byte(add);inf=Output_1byte();CE=0;return(inf); /*DS1302初始化*/void init_1302()if(Read_DS1302(0xd1)=0x55) /判断内存单元的内容，是否进行初始化 return; else Write_DS1302(0x8e,0x00); /关闭写保护 Write_DS1302(0x90,0x00); /电池充电设置 Write_DS1302(0x80,0x00); /秒 Write_DS1302(0x82,0x54); /分 Write_DS1302(0x84,0x20); /时 Write_DS1302(0x86,0x30); /日 Write_DS1302(0x88,0x11); /月 Write_DS1302(0x8a,0x05); /星期 Write_DS1302(0x8c,0x12); /年 Write_DS1302(0xd0,0x55); /写RAM Write_DS1302(0x8e,0x80); /打开写保护 /*延时函数*/void DelayUs2x(unsigned char t) while(-t);void DelayMs(unsigned char t) while(t-) /大致延时1mS DelayUs2x(245);DelayUs2x(245); /*12864判忙*/void check_busy()RS=0;RW=1;EN=1;while(P0&0x80)=0x80);EN=0; /*12864写指令*/void write_com(uchar com)check_busy();RS=0;RW=0;EN=1;P0=com;DelayUs2x(250);EN=0;DelayUs2x(250); /*12864写数据*/void write_data(uchar dat)check_busy();RS=1;RW=0;EN=1;P0=dat;DelayUs2x(250);EN=0;DelayUs2x(250); /*12864初始化函数*/void init() DelayMs(40); /大于40MS的延时程序 PSB=1; /设置为8BIT并口工作模式 DelayMs(1); /延时 RET=0; /复位 DelayMs(1); /延时 RET=1; /复位置高 DelayMs(200); write_com(0x30); /选择基本指令集 DelayUs2x(250); /延时大于100us write_com(0x30); /选择8bit数据流 DelayUs2x(200); /延时大于37us write_com(0x0c); /开显示(无游标、不反白) DelayUs2x(250); /延时大于100us write_com(0x01); /清除显示，并且设定地址指针为00H DelayMs(200); /延时大于10ms write_com(0x06); /指定在资料的读取及写入时，设定游标的移动方向及指定显示的移位，光标从右向左加1位移动 DelayUs2x(250); /延时大于100us /*清屏*/void clrscreen()write_com(0x01);DelayMs(15); /* 主函数 */void main()uchar sec,sec1,sec2;uchar min,min1,min2;uchar hour,hour1,hour2;uchar date,date1,date2;uchar mon,mon1,mon2;uchar day;uchar year,year1,year2;uchar table1=年月日时分秒星期温度摄氏; /长度24uchar table2=0XD2,0XBB, 0XB6,0XFE, 0XC8,0XFD, 0XCB,0XC4, 0XCE,0XE5, 0XCE,0XF9, 0XC8,0XD5; /长度14uchar table3=0123456789; /长度10init();/液晶初始化clrscreen();DelayMs(200);init_1302(); /1302初始化 只初始化一下就可以 需要下载两次DelayMs(50);write_com(0x80); /显示20write_data(2);write_data(0);write_com(0x82); /显示年write_data(table10);write_data(table11);write_com(0x84); /显示月write_data(table12);write_data(table13);write_com(0x86); /显示日write_data(table14);write_data(table15);write_com(0x91); /显示时write_data(table16);write_data(table17);write_com(0x93); /显示分write_data(table18);write_data(table19);write_com(0x95); /显示秒write_data(table110);write_data(table111);write_com(0x88); /显示星期write_data(table112);write_data(table113); write_data(table114);write_data(table115);while(1)sec=Read_DS1302(0x81); /读秒sec1=sec&0x0f;/个位sec2=sec4;/十位min=Read_DS1302(0x83); /读分min1=min&0x0f;/个位min2=min4;/十位hour=Read_DS1302(0x85); /读时hour1=hour&0x0f;/个位hour2=hour4;/十位date=Read_DS1302(0x87); /读日date1=date&0x0f;/个位date2=date4;/十位mon=Read_DS1302(0x89); /读月mon1=mon&0x0f;/个位mon2=mon4;/十位year=Read_DS1302(0x8d); /读年year1=year&0x0f;/个位year2=year4;/十位day=Read_DS1302(0x8b); /读星期write_com(0x94); /送显示内容write_data(table3sec2);/秒 write_data(table3sec1); write_com(0x92);write_data(table3min2); /分write_data(table3min1); write_com(0x90);write_data(table3hour2); /时write_data(table3hour1);write_com(0x85);write_data(table3date2); /日write_data(table3date1);writ