DS芯片C语言程序

1、DS芯片C语言程序The Standardization Office was revised on the afternoon of December 13, 2020#include<>/包含头文件，一般情况不需要改动，头文件包含特殊功能寄存器的定义#include <>sbit SCK=P3A6;时钟sbit SDA二P3人4;数据sbit RST = P3A5;/ DS 1302 复位sbit LS138A=P2A2;sbit LS138B二P2T;sbit LS138C=P2A4;bit ReadRTC.Flag;/定义读 DS 1302 标志unsigned

2、 char l_tmpdate7=0,0,12,15,5,3,8;/秒分时曰月周年 08-05-15 12:00:00unsigned char l_tmpdisplay8;code unsigned char write_rtc_address7=0x80,0x82,Ox84,0x86,0x88,0x8a,0x8c; / 秒分时曰月周年最低位读写位code unsigned char read_rtc_address7=0x81,0x83,0x85,0x87,0x89,0x8b,0x8d;code unsigned chartable= 0x3f,0x06,0x5b,0x4f,0x66,Ox

3、 6d,0x7d,0x07,0x7f,0x6f,0x40;共阴数码管0-9 熄灭，表/ /*函数声明*/void Write_Ds 1302_byte(unsigned char temp);void Write_Ds 1302( unsigned char addressjinsigned char dat);unsigned char Read_Dsl302 ( unsigned char address ); void Read_RTC(void)y/read RTC void Set_RTC(void); /set RTCvoid InitTIMERO(void);/inital ti

4、merO/ /*主函数*/jcjjc/void niain(void)InitTIMERO();初始化定时器0Set.RTCO; 写入时钟值，如果使用备用电池时候，不需要没每次上电写入，此程序应该屏蔽while(l)if(ReadRTC_Flag)Read RT C_F1 ag=O;Read_RTC();数据的转加Ltmpdisplay0=l_tmpdate2/l 6;换，因我们采用数码管09的显示，将数据分开Ltmpdisplayf 1 =l_tmpdate2 &OxOf;Ltmpdisplay2=l 0;入叮l_tmpdisplay =l_tmpdatel/16; l_tmpdis

5、play4=l_tmpdate l&OxOf;Ltmpdisplay 5 =10;l_tmpdisplay6=l_tmpdate0/16; l_tmpdisplay7=Ltmpdate0&OxOf;jjc/*定时器0初始化*/void InitTIMERO(void)TMODI=0x01;/定时器设置16位TH0=0xef;/初始化值TLO=OxfO;ETO=1;TRO=1;EA=1;)/C5C5C5C5C5C5Cjjc/写一个字节*/5C 5C5C5C5C5C5C5C5C5C/void Write_Ds 1302_Byte(unsigned char temp) unsign

6、ed char i;for (i=0;iv8;i+) 循环8次写入数据SCK=0;SDA=temp&OxO 1; 每次传输低字节temp»= 1;右移一位SCK=1;)/*写入 DS 1302*/5C5C5C5C5C5C5C5C/void Write_Ds 1302( unsigned char address,unsigned char dat) RST=0;op_()；SCK=0;op_();RST=1;发送地址发送数据jjc/*读出DS 1302数据*/Write_Dsl 302_Byte(address);Write_Dsl 302_Byte(dat);恢复RST=O

7、;/5C5C5C5C PC5C PC5C PC5C PC5C/unsigned char Read_Dsl302 ( unsigned char address ) unsigned char i,temp=0x00:RST=0;op_()；op_()；SCK=0;op_();op_();RST=1;op_()；op_()；Write_Ds 1302_Byte(address);for (i=0;i<&i+)循环8次读取数据if(SDA)templ=0x80;SCK=0;temp»= 1;op_()；_nop_();_nop_();SCK=1;RST=0;每次传输低字节

8、右移一位_n°P_()；以下为DS 1302复位的稳定时间】op_()；RST=0;SCK=0;返回-nop J); 】op_()； 】op_()； -nop J); SCK=1; op_(); op_()； SDA=O; op_()； -nop J); SDA=1; op_()； op_()；return (temp);/ /*读时钟数据*/jcjjc/void Read_RTC(void) 读取日历unsigned char i,*p;p=read_rtc_ad dress;地址传递for(i=0;i<7;i+)分7次读取秒分时日月周年Ltmpdatei=Read_Ds 1

9、302(*p);P+；1/*设定时钟数据*/5C5C5C5C5C5C5C5C/void Set_RTC(void)设定日历unsigned char i严pjmp; for(i=0;i<7;i+) /BCD 处理 tmp=Ltmpdate i/10;l_tmpdatei=l_tmpdatei% 10;Ltmpdatei=Ltmpdatei+tmp* 16;)Write.Dsl 302(0x8E,0X00);p=write_rtc_address; 传地址for(i=0;i<7;i+)7次写入秒分时曰月周年Write_Ds 1302(*p,l_tmpdatei);P+；Write.D

10、s 1302(0x8E,0x80);)jjc/*定时器中断函数*/ / void tim(void) interrupt 1 using 1中断，用于数码管扫描static unsigned char i5num;TH0=0xf5;TL0=0xe0;PO=tablel_tmpdisplayi;查表法得到要显示数字的数码段switch(i)case 0:LS138A=0; LS138B=O; LS138C=0; break;case 1:LS138A=1; LS138B=0; LS138C=0; break;case 2:LS138A=0; LS138B=1; LS138C=O: break;case 3:LS138A=1; LS138B=1; LS138C=0: break;case 4:LS138A=0; LS138B=O; LS138C=1; break;case 5:LS138A=1; LS138B=O; LS138C= 1; break;case