51单片机DS1302日历时钟程序.doc

51 单片机 ds1302 时钟芯片 #define uint unsigned int #define uchar unsigned char sbit lcdrs = P1^0; sbit lcdrw = P1^1; sbit lcden = P1^2; sbit key0 = P2^0;//功能键,选择时分秒 sbit key1 = P2^1;//加1键 sbit key2 = P2^2;//减1键 sbit key4 = P2^4; sbit clk_1302 = P1^5; //1302芯片位定义 sbit io_1302 = P1^6; sbit rst_1302 = P1^7; uchar bdata dat; sbit dat0 = dat^0; sbit dat7 = dat^7; uchar key0_count;//按键0被按的次数(0~3) uchar flag; char hour,minute,second; uchar table_date[] = 2009-4-12 Mon; uchar table_time[] = 00:00:00; /****** 函数申明 ********/ void write_cmd_1602(uchar cmd); void write_data_1602(uchar dat); void write_add(uchar add,uchar dat); void init1602(); void delay(uint z); uchar reverse(uchar c); void keyscan(); void init(); void RTC_initial (); void wr_1302(uchar wr_data); uchar rd_1302(void); uchar uc_R1302(uchar ucAddr); void v_W1302(uchar ucAddr, uchar ucDa); 主程序 #include reg52.h #include intrins.h #include header.h /****** 主函数 ********/ void main() { RTC_initial(); init(); //init1602(); //while(1); while(1) { if(flag) { second = uc_R1302(0x81); minute = uc_R1302(0x83); hour = uc_R1302(0x85); write_add(0x40+10,second); write_add(0x40+7,minute); write_add(0x40+4,hour); } keyscan(); delay(1); } } void RTC_initial () { v_W1302(0x8e,0x00); //使能 v_W1302(0x80,0x80); //停止晶振 v_W1302(0x90,0x00); //关闭充电 v_W1302(0x8c,0x07); //设置年 v_W1302(0x8a,0x06); //设置周 v_W1302(0x88,0x01); //设置月 v_W1302(0x86,0x13); //设置日 v_W1302(0x84,0x18); //设置小时 v_W1302(0x82,0x05); //设置分 v_W1302(0x80,0x00); //启动晶振,设置秒 v_W1302(0x8e,0x80); //使能 } /***************************** * 功 能: 往DS1302写入1Byte数据 * 输 入: wr_data写入的数据 * 返回值: 无 *******************************/ void wr_1302(uchar wr_data) { uchar i = 0; dat = wr_data; rst_1302 = 1; clk_1302 = 0; delay(5); for(i=0;i8;i++) { io_1302 = dat0;