ds1302数码管显示应用

1、DS1302应用刚学单片机，好多好奇，所以想做个简单的时钟。下面是PROTEUS仿真电路和电路图，简单易懂。文笔不好，说了多余。下面是程序。#include#include#include#defineuintunsignedint#defineucharunsignedchar#defineBCDTUAN(str)(str/10*16+str%10)/定义宏，将要写入DS1302的时间转化为BCD码#defineWrite_Sec0 x80#defineWrite_Min0 x82#defineWrite_Hou0 x84#defineWrite_Dat0 x86#defineWrite_M

2、on0 x88#defineWrite_day0 x8a#defineWrite_Yea0 x8c#defineWrite_WP0 x8e/写保护位#defineWrite_TCR0 x90#defineRead_Sec0 x81#defineRead_Min0 x83#defineRead_Hou0 x85#defineRead_Dat0 x87#defineRead_Mon0 x89#defineRead_Day0 x8b#defineRead_Yea0 x8d#defineCLK_BurstW0 xbf/时钟突发模式写#defineCLK_BurstR0 xbf/时钟突发模式读#defi

3、neWrite_RAM_Begin0 xc0/RAM第一个字节写指令#defineRead_RAM_Begin0 xc1/RAM第一个字节读指令#defineRAM_BurstW0 xfe/突发模式写RAM#defineRAM_BurstR0 xff/突发模式读RAMsbit_74hc154_A=P10;sbit_74hc154_B=P11;sbit_74hc154_C=P12;sbit_74hc154_D=P13;sbitCE=P16;sbitSCLK=P15;sbitIO=P14;ucharcodescan4=0,0,0,0,0,0,0,1,0,0,1,0,0,0,1,1,0,1,0,0,

4、0,1,0,1,0,1,1,0,0,1,1,1,1,0,0,0,1,0,0,1,1,0,1,0,1,0,1,1,1,1,0,0,1,1,0,1,1,1,1,0,1,1,1,1;ucharscanbuff=0,0,0,0,0,0,0,0,0,0,0,0;ucharcodedispdate=0 xc0,0 xf9,0 xa4,0 xb0,0 x99,0 x92,0 x82,0 xf8,0 x80,0 x90;voidWriteDS1302(void);/向DS1302写入时间。voidReadDS1302(void);/读取DS1302中的年,月,日,星期几,小时,分钟和秒.voidSendCmd

5、(unsignedcharcmd);/传送地址voiddelayus(unsignedchartt);voiddelay(ucharz)ucharx,y;for(x=z;x0;x-)for(y=120;y0;y-);void_74hc154(uchark)/位扫描设定_74hc154_A=scank0;_74hc154_B=scank1;_74hc154_C=scank2;_74hc154_D=scank3;voidmain()uchari;while(1)WriteDS1302();ReadDS1302();for(i=0;i12;i+)_74hc154(i);/位扫描P0=dispdate

6、scanbuffi;/数据送P0口delay(10);voidWriteDS1302(void)WriteByte(Write_Yea,BCDTUAN(13);/写13年/读取DS1302中的年,月,日,星期几,小时,分钟和秒.voidReadDS1302(void)unsignedcharbuff;/将读取的数据送入缓存数组，住输出数据为16进制buff=ReadByte(Read_Yea);/年scanbuff10=buff/16;/十位scanbuff11=buff%16;/个位buff=ReadByte(Read_Mon);/月scanbuff6=buff/16;/十位scanbuff

7、7=buff%16;/个位buff=ReadByte(Read_Dat);/日scanbuff8=buff/16;/十位scanbuff9=buff%16;/个位buff=ReadByte(Read_Hou);/时scanbuff0=buff/16;/十位scanbuff1=buff%16;/个位buff=ReadByte(Read_Min);/分scanbuff2=buff/16;/十位scanbuff3=buff%16;/个位buff=ReadByte(Read_Sec);/秒scanbuff4=buff/16;/十位scanbuff5=buff%16;/个位/读取地址RCmd的时间/数据

8、unsignedcharReadByte(unsignedcharRCmd)unsignedcharvalu=0 x00,temp;CE=0;/初使化SCLK=0;/初使化，并为riseedge做准备CE=1;/初使化，传输开始。TheSCLKmustbelowwhenCEisdriventohighlevel.SendCmd(RCmd);/传送地址for(temp=0;temp=1;SCLK=0;if(IO=1)valu|=0 x80;delayus(1);SCLK=1;delayus(1);CE=0;/结束传输returnvalu;/向WCmd地址写入时间/数据若写入时间，则时间用#def

9、ineBCD(time)(time/10*16+time%10)处理.voidWriteByte(unsignedcharWCmd,unsignedcharvalu)unsignedchartemp;CE=0;SCLK=0;/初使化，并为riseedge做准备CE=1;/初使化，传输开始。SendCmd(WCmd);for(temp=0;temp=1;CE=0;/结束传输/突发模式读RAMnum个字节voidBurstRead_CLK(unsignedchar*ptr)unsignedchartemp,temp2,valu;CE=0;SCLK=0;CE=1;SendCmd(RAM_BurstR

10、);/突发模式读取CLK开始for(temp2=0;temp28;temp2+)for(temp=0;temp=1;SCLK=0;if(IO=1)valu|=0 x80;delayus(2);SCLK=1;delayus(2);*ptr=valu;ptr+;CE=0;/结束突发模式读voidBurstRead_RAM(unsignedchar*ptr,unsignedcharnum)unsignedchartemp1,temp2,valu;CE=0;SCLK=0;CE=1;SendCmd(CLK_BurstR);/突发模式读取CLK开始for(temp2=0;temp2num;temp2+)f

11、or(temp1=0;temp1=1;SCLK=0;if(IO=1)valu|=0 x80;delayus(2);SCLK=1;delayus(2);*ptr=valu;ptr+;CE=0;/结束突发模式读/突发模式写RAMvoidBurstWrite_RAM(unsignedcharData)unsignedcharsize=sizeof(Data),temp1,temp2,valu;if(size31)size=31;CE=0;SCLK=0;CE=1;SendCmd(RAM_BurstW);for(temp2=0;temp2size;temp2+)valu=Datatemp2;for(te

12、mp1=0;temp1=1;CE=0;voidBurstWrite_CLK(unsignedcharTime)unsignedcharsize=sizeof(Time),temp1,temp2,valu;if(size8)size=8;CE=0;SCLK=0;CE=1;SendCmd(CLK_BurstW);for(temp2=0;temp2size;temp2+)valu=Timetemp2;for(temp1=0;temp1=1;CE=0;/传送指令voidSendCmd(unsignedcharcmd)unsignedchartemp;for(temp=0;temp=1;voiddelayus(unsignedchartt)/tt=2，延时为2ustt-;这个是ds1302.h头文件内容，建个txt文档将下面内容复制进去，改后缀为.h即可添加了#ifndefDS1302_H#defineDS1302_HexternunsignedcharReadByte(unsignedcharRCmd);externvoidWriteByte(unsignedcharWCmd,unsignedch