51單片機(jī)操作DS1302時(shí)鐘芯片

#defineuintunsignedint#defineucharunsignedcharsbitlcdrs=P1^0;sbitlcdrw=P1^1;sbitlcden=P1^2;sbitkey0=P2^0;//功能鍵,選擇時(shí)分秒sbitkey1=P2^1;//加1鍵sbitkey2=P2^2;//減1鍵sbitkey4=P2^4;sbitclk_1302=P1^5;//1302芯片位定義sbitio_1302=P1^6;sbitrst_1302=P1^7;ucharbdatadat;sbitdat0=dat^0;sbitdat7=dat^7;ucharkey0_count;//按鍵0被按的次數(shù)(0~3)ucharflag;charhour,minute,second;uchartable_date[]="2009-4-12Mon";uchartable_time[]="00:00:00";/******函數(shù)申明********/voidwrite_cmd_1602(ucharcmd);voidwrite_data_1602(uchardat);voidwrite_add(ucharadd,uchardat);voidinit1602();voiddelay(uintz);ucharreverse(ucharc);voidkeyscan();voidinit();voidRTC_initial();voidwr_1302(ucharwr_data);ucharrd_1302(void);ucharuc_R1302(ucharucAddr);voidv_W1302(ucharucAddr,ucharucDa);

主程序

#include#include#include"header.h"/******主函數(shù)********/voidmain(){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);}}voidRTC_initial(){v_W1302(0x8e,0x00);//使能v_W1302(0x80,0x80);//停止晶振v_W1302(0x90,0x00);//關(guān)閉充電v_W1302(0x8c,0x07);//設(shè)置年v_W1302(0x8a,0x06);//設(shè)置周v_W1302(0x88,0x01);//設(shè)置月v_W1302(0x86,0x13);//設(shè)置日v_W1302(0x84,0x18);//設(shè)置小時(shí)v_W1302(0x82,0x05);//設(shè)置分v_W1302(0x80,0x00);//啟動(dòng)晶振,設(shè)置秒v_W1302(0x8e,0x80);//使能}/******************************功能:往DS1302寫入1Byte數(shù)據(jù)*輸入:wr_data寫入的數(shù)據(jù)*返回值:無*******************************/voidwr_1302(ucharwr_data){uchari=0;dat=wr_data;rst_1302=1;clk_1302=0;delay(5);for(i=0;i<8;i++){io_1302=dat0;clk_1302=0;_nop_();clk_1302=1;_nop_();dat>>=1;}//rst_1302=0;}/******************************功能:從DS1302讀出1Byte數(shù)據(jù)*返回值:dat*******************************/ucharrd_1302(void){uchari;rst_1302=1;clk_1302=1;delay(5);for(i=0;i<8;i++){dat>>=1;dat7=io_1302;clk_1302=1;_nop_();_nop_();clk_1302=0;_nop_();}rst_1302=0;returndat;}/*********************************************************************名稱:uc_R1302*說明:先寫地址，后讀命令/數(shù)據(jù)*功能:讀取DS1302某地址的數(shù)據(jù)*調(diào)用:v_RTInputByte(),uc_RTOutputByte()*輸入:ucAddr:DS1302地址*返回值:ucDa:讀取的數(shù)據(jù)***********************************************************************/ucharuc_R1302(ucharadd){uchartemp=0xff;wr_1302(add);temp=rd_1302();returntemp;}/*********************************************************************名稱:v_W1302*說明:先寫地址，后寫命令/數(shù)據(jù)*功能:往DS1302寫入數(shù)據(jù)*調(diào)用:v_RTInputByte()*輸入:ucAddr:DS1302地址,ucDa:要寫的數(shù)據(jù)*返回值:無**********************************************************************/voidv_W1302(ucharucAddr,ucharucDa){wr_1302(ucAddr);wr_1302(ucDa);rst_1302=0;clk_1302=0;}//1602液晶初始化voidinit1602(){lcdrw=0;//本程序只讀不寫,故將其置低lcden=0;//關(guān)閉1602delay(5);write_cmd_1602(0x01);//清屏write_cmd_1602(0x38);//顯示模式write_cmd_1602(0x0c);//開顯示,不顯示光標(biāo),不閃爍write_cmd_1602(0x06);//地址指針自動(dòng)加1write_cmd_1602(0x80+1);//將光標(biāo)指向第一行第二個(gè)位置delay(5);}voiddelay(uintz){uintx,y;for(x=z;x>0;x--)for(y=110;y>0;y--);}/**將發(fā)送的數(shù)據(jù)進(jìn)行翻轉(zhuǎn),高位到低位,低位轉(zhuǎn)到高位**/ucharreverse(ucharc){ucharchbuff=0;if(c&0x01)chbuff=chbuff|0x80;if(c&0x02)chbuff=chbuff|0x40;if(c&0x04)chbuff=chbuff|0x20;if(c&0x08)chbuff=chbuff|0x10;if(c&0x10)chbuff=chbuff|0x08;if(c&0x20)chbuff=chbuff|0x04;if(c&0x40)chbuff=chbuff|0x02;if(c&0x80)chbuff=chbuff|0x01;returnchbuff;}//向液晶寫命令voidwrite_cmd_1602(ucharcmd){lcdrs=0;//低表示寫命令,高表示寫數(shù)據(jù)delay(5);P0=reverse(cmd);delay(5);lcden=1;//給一個(gè)高脈沖delay(5);lcden=0;delay(5);}//向液晶寫數(shù)據(jù)voidwrite_data_1602(uchardat){lcdrs=1;//低表示寫命令,高表示寫數(shù)據(jù)delay(5);P0=reverse(dat);delay(5);lcden=1;//給一個(gè)高脈沖delay(5);lcden=0;delay(5);}//根據(jù)地址向液晶寫數(shù)據(jù)voidwrite_add(ucharadd,uchardat){ucharshi,ge;shi=dat/10;ge=dat%10;delay(5);write_cmd_1602(0x80+add);write_data_1602(shi+0x30);delay(5);write_data_1602(ge+0x30);}//鍵盤掃描函數(shù)voidkeyscan(){key4=0;if(0==key0)//第一個(gè)鍵被按下{delay(5);//消抖if(0==key0){key0_count++;if(4==key0_count){key0_count=0;flag=1;}while(!key0);//松手檢測flag=0;if(0==key0_count){flag=0;write_cmd_1602(0x0c);//禁止顯示光標(biāo)并不讓其閃爍}if(1==key0_count){flag=0;write_cmd_1602(0x80+0x40+11);//將地址指針指向秒的位置write_cmd_1602(0x0f);//顯示光標(biāo)并閃爍delay(5);}if(2==key0_count){flag=0;write_cmd_1602(0x80+0x40+8);//將地址指針指向分的位置write_cmd_1602(0x0f);//顯示光標(biāo)并閃爍delay(5);}if(3==key0_count){flag=0;write_cmd_1602(0x80+0x40+5);//將地址指針指向小時(shí)的位置write_cmd_1602(0x0f);//顯示光標(biāo)并閃爍delay(5);}}}if(0==key1)//第二個(gè)鍵被按下{delay(5);//消抖if(0==key1){while(!key1);//松手檢測flag=0;if(key0_count==1){second++;if(60==second)second=0;write_add(0x40+10,second);v_W1302(0x80,second);}if(key0_count==2){minute++;if(60==minute)minute=0;write_add(0x40+7,minute);v_W1302(0x82,minute);}if(key0_count==3){hour++;if(24==hour)hour=0;write_add(0x40+4,hour);v_W1302(0x84,hour);}}}if(0==key2)//第三個(gè)鍵被按下{delay(5);//消抖if(0==key2){while(!key2);//松手檢測flag=0;if(key0_count==1){second--;if(-1==second)second=59;write_add(0x40+10,second);v_W1302(0x80,second);}if(key0_count==2){minute--;if(-1==minute)minute=59;write_add(0x40+7,minute);v_W1302(0x82,minute);}if(key0_count==3){hour--;if(-1==hour)hour=23;write_add(0x40+4,hour);v_W1302(0x84,hour);}}}}//程序初始化函數(shù)voidinit(){uchari;flag=1;hour=0;minute=0;second=0;init1602();delay(20);//延長時(shí)間,確保液晶處于非忙狀態(tài)for(i=0;i<14;i++){write_data_1602(table_date[i]);delay(5);}write_cmd_1602(0x80+0x40+4);//調(diào)整地址指針for(i=0;i<8;i++){write_data_1602(table_time[i]);delay(5);}delay(50);v_W1302(0x81,25);v_W1302(0x83,48);v_W1302(0x85,10);}