shift.c

I2C存储芯片24C016大全

#include<reg51.h>
#include<intrins.h>
//#include<head.h>

#define uchar unsigned char
#define uint  unsigned int

code char led[]={0x11,0xD7,0x32,0x92,
 				 0xD4,0x98,0x18,0xD3,0x10,0x90, 
 				 0x50,0x1C,0x39,0x16,0x38,0x78,0xff};//数码管显示字符


sbit sda_164=P0^2;
sbit scl_164=P0^3;

void shift_164(uint k)
{
 uchar lednumber,i;
 lednumber=led[k];
 scl_164=0;
 for(i=0;i<8;i++)
 {
  if(lednumber&0x80)  sda_164=1;
  else                sda_164=0;
  scl_164=1;
  lednumber=lednumber<<1;
  scl_164=0;
 }
}

void display(uint num)
{
 shift_164(num%10);
 shift_164((num%100)/10);
 shift_164((num%1000)/100);
 shift_164(num/1000);
 shift_164(16);
 shift_164(0xff);
 shift_164(0xff);
 shift_164(0xff);
}

void display_char(uchar num)
{
 shift_164(num&0x0f);
 shift_164(6);
 shift_164(16);
 shift_164(16);
 shift_164(16);
 shift_164(0xff);
 shift_164(0xff);
 shift_164(0xff);
}