ref3.c

DS1302 reference code

   1. #include<reg51.h> 
# #include<intrins.h>   
# #define uchar unsigned char   
#    
#    
#    
# sbit P2_0=P2^0;   
# sbit P2_1=P2^1;   
# sbit P2_2=P2^2;   
# sbit P2_3=P2^3;   
# sbit P2_4=P2^4;   
# sbit P2_7=P2^7;   
# sbit DQ = P3^4;   
# sbit P1_1=P1^1;   
# sbit P1_4=P1^4;   
# sbit ab=P0^3;   
# sbit clk=P0^4;   
# sbit a=P0^0;   
# sbit b=P0^1;   
# sbit c=P0^2;   
#    
#    
# bit pin1;   
# bit pin2;   
# bit pin3;   
# bit pin4;   
# bit pin5;   
#    
#    
# sbit RST=P0^5;   
# sbit IO=P0^6;   
# sbit CLK=P0^7;   
# //sbit KY=P3^3;   
#    
# void sendd(uchar c);   
# void  dely5ms();   
#    
#    
# uchar count1=5;   
# uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,   
#                     0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};   
#    
# uchar disbuf[4]={1,2,3,4};   
# uchar tbuf[]={0x00,0x00,0x10,0x6,0x11,6,0x4};   
#    
#    
# void disp()   
# {   
#  uchar temp;   
#  temp=table[disbuf[0]];   
#  if(pin1) temp=temp|0x80;   
#  sendd(temp);   
#  a=b=c=0;   
#  dely5ms();   
#  a=b=c=1;   
#     
# temp=table[disbuf[1]];   
#  if(pin2) temp=temp|0x80;   
#  sendd(temp);   
#  a=1;   
#  b=0;   
#  c=0;   
#  dely5ms();   
#  a=b=c=1;   
#    
#     
#    
# temp=table[disbuf[2]];   
#  if(pin3) temp=temp|0x80;   
#  sendd(temp);   
#  a=0;   
#  b=1;   
#  c=0;   
#  dely5ms();   
#  a=b=c=1;   
#    
# temp=table[disbuf[3]];   
#  if(pin4) temp=temp|0x80;   
#  sendd(temp);   
#  a=1;   
#  b=1;   
#  c=0;   
#  dely5ms();   
#  a=b=c=1;   
#    
# temp=table[disbuf[4]];   
#  if(pin5) temp=temp|0x80;   
#  sendd(temp);   
#  a=0;   
#  b=0;   
#  c=1;   
#  dely5ms();   
# P0=P0|0x07;   
#     
# }   
#    
# void sendd(uchar c)   
# {   
#  uchar i;   
#  for(i=0;i<8;i++)   
#  {   
#   if((c<<i)&0x80) else="" ab="1;" };="" dely5ms()="" unsigned="" int="" i,j,count="5;" (i="0;i<count;i++)" for="" (j="0;j<10;j++);" }="" void="" write(uchar="" dat)="" uchar="" i;="" for(i="0;i<8;i++)" {="" if(dat&0x1)="" io="0;" clk="1;" _nop_();="" dat="dat">>1;   
#  }   
# }   
#    
# uchar read()   
# {   
#  uchar i,rbyte;   
#  rbyte=0;   
#  for(i=0;i<8;i++)   
#  {    
#   rbyte=rbyte>>1;   
#   if(IO)   
#   rbyte=rbyte|0x80;   
#   CLK=1;   
#   _nop_();  _nop_();   
#   CLK=0;   
#  }   
#  return rbyte;   
# }   
#    
# void rcwrite(uchar add,uchar da)   
# {   
#  RST=0;   
#  CLK=0;   
#  RST=1;   
#  write(add);  _nop_();  _nop_();   
#  write(da);   
#  RST=0;   
#  CLK=1;   
# }   
#    
# uchar rcread(uchar add)   
# {   
#  uchar val;   
#  RST=0;   
#  CLK=0;   
#  RST=1;   
#  write(add);  _nop_();  _nop_();  _nop_();   
#  val=read();   
#  RST=0;   
#  CLK=1;   
#  return val;   
# }   
#    
# void set_time(char data *pt)   
# {   
#  uchar i,add;   
#  add=0x80;   
#  rcwrite(0x8e,0);   
#  rcwrite(0x90,0);   
#  for(i=0;i<7;i++)   
#  {   
#   rcwrite(add,*pt++);   
#   add+=2;   
#  }   
#  //rcwrite(0x8e,0x80);   
# }   
#    
# void get_time()   
# {   
#  uchar i,address;   
#  address=0x81;   
#  for(i=0;i<7;i++)   
#  {   
#   tbuf[i]=rcread(address);   
#   address+=2;   
#  }   
# }   
#    
#      
# main()   
# {   
#   P1_4=0;    
#   RST=0;   
#   CLK=0;   
#   RST=1;   
#   set_time(tbuf);   
#   while(1)   
#   {  _nop_();  _nop_();   
#    get_time();   
#     disbuf[4]=tbuf[0]&0x0f;   
#    disbuf[3]=tbuf[1]&0x0f;   
#    disbuf[2]=(tbuf[1]&0xf0)>>4;   
#    disbuf[1]=tbuf[2]&0x0f;   
#    disbuf[0]=(tbuf[2]&0xf0)>>4;   
#    disp();   
#   }   
# }   
#    
#    
# </i)&0x80)></intrins.h></reg51.h>