DS1302实时时钟.doc

DS1302 实时时钟/* LED_D(数码管段选) LED_W(数码管位选)*/#include#include#define uchar unsigned char#define uint unsigned int #define LED_W P2#define LED_D P0sbit LED=P32;sbit SCK=P34;sbit IO=P35;sbit RST=P36;sbit set=P10;sbit s1=P11;sbit s2=P12;uchar code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;/0-9uchar write_add=0x8c,0x8a,0x88,0x86,0x84,0x82,0x80;/年、星期、月份、日期、时、分、秒uchar read_add=0x8d,0x8b,0x89,0x87,0x85,0x83,0x81;/年、星期、月份、日期、时、分、秒uchar time_date7;/年、星期、月份、日期、时、分、秒uchar disp4;uchar num,setn,minite,hour;void delay(uint z)uint x,y;for(x=0;xz;x+);for(y=0;y110;y+);void Write_DS1302_Byte(uchar dat)uchar i;for(i=0;i1;SCK=1;void Write_DS1302(uchar add,uchar dat)RST=0;_nop_();SCK=0;_nop_();RST=1;_nop_();Write_DS1302_Byte(add);Write_DS1302_Byte(dat);RST=0;_nop_();IO=1;SCK=1;uchar Read_DS1302(uchar add)uchar i,value;RST=0;_nop_();SCK=0;_nop_();RST=1;_nop_();Write_DS1302_Byte(add);for(i=0;i1;SCK=0;if(IO)value=value|0x80;SCK=1;RST=0;_nop_();SCK=0;_nop_();SCK=1;IO=1;return value;uchar Chang_H_D(uchar dat)uchar t;t=dat/16*10+dat%16;return t;uchar Chang_D_H(uchar dat)uchar t;t=dat/10*16+dat%10;return t;void Read()uchar i;for(i=0;i7;i+)time_datei=Read_DS1302(read_addi);void timepro()disp0=time_date5%16;disp1=time_date5/16;disp2=time_date4%16;disp3=time_date4/16;void keyscan()if(set=0)delay(5);if(set=0)while(!set);setn+;LED=0;TR0=0;num=0;TH0=(65536-50000)/256;TL0=(65536-50000)%256;Write_DS1302(0x8e,0x00);delay(1);Write_DS1302(0x80,Chang_D_H(128);delay(1);Write_DS1302(0x8e,0x80);if(setn=3)setn=0;TR0=1;Write_DS1302(0x8e,0x00);delay(1);Write_DS1302(0x80,Chang_D_H(0);delay(1);Write_DS1302(0x8e,0x80);if(setn!=0)if(s1=0)delay(5);if(s1=0)while(!s1);Write_DS1302(0x8e,0x00);if(setn=1)minite=Chang_H_D(time_date5);minite+;if(minite=60)minite=0;Write_DS1302(0x82,Chang_D_H(minite);if(setn=2)hour=Chang_H_D(time_date4);hour+;if(hour=24)hour=0;Write_DS1302(0x84,Chang_D_H(hour);Write_DS1302(0x8e,0x80);void display()if(setn!=2)LED_W=1;LED_D=tabledisp0;delay(3);LED_D=0;LED_W=2;LED_D=tabledisp1;delay(3);LED_D=0;if(setn!=1)LED_W=4;LED_D=tabledisp2;delay(3);LED_D=0;LED_W=8;LED_D=tabledisp3;delay(3);LED_D=0;void init()TMOD=0x01; TH0=(65536-50000)/256;TL0=(65536-50000)%256;ET0=1; EA=1; TR0=1; num=0;setn=0;LED_W=0;LED_D=0;LED=1;void Shan()LED=LED;void main()init();while(1)Read();timepro();k