/****************************************
**********93c46的51单片机C源程序*****************************************/

#include<reg51.h>
#include<intrins.h>
sbitcs=P1^7;
sbitsk=P1^6;
sbitdi=P1^5;
sbitdod=P1^4;

sbitled_r=P1^3;
sbitled_g=P1^2;
/*
#definecsP1^7
#defineskP1^6
#definediP1^5
#definedodP3^7

#defineled_gP1^3
#defineled_rP1^3*/

//#definede100//8

#defineucharunsignedchar
#defineuintunsignedint

unsignedcharde=100;
/***********************************
@=_at_(c51);_delay(de)=_nop(c51)
_pac,pcc,pbc,pdciscontroli/oport
************************************/

//unsignedcharr_data1_at_0x40;


void_delay(ucharde)
{
while(de){de--;_nop_();}
}
/****************************************
startbit:1,op:10,addr:A6--A0;*****
addrx=110a6a5a4a3a2a1a0:10number***
*******read_9346()8bit
****************************************/

unsignedcharread_9346(ucharaddrx)
{
uchari;
unsignedcharj=0x00;
cs=1;_delay(de);
sk=0;_delay(de);
di=1;//110
sk=1;_delay(de);
sk=0;_delay(de);
di=1;
sk=1;_delay(de);
sk=0;_delay(de);
di=0;
sk=1;_delay(de);
sk=0;_delay(de);
//a6---a0valid7bitdata;sofollow
for(i=0;i<7;i++)
{addrx<<=1;
di=(addrx&0x80);
sk=1;_delay(de);
sk=0;_delay(de);
}
dod=1;
//returnchar8bitdata;
for(i=0;i<8;i++)
{//j=(j<<1)|dod;
sk=1;_delay(de);
j=(j<<1)|dod;
sk=0;_delay(de);
}
cs=0;
returnj;
}

/****************************************
**********en_diswrite_erase()8bit
*****************************************/
voiden_dis(uchara)
{
uchari,en_dis;
cs=1;_delay(de);
sk=0;_delay(de);
di=1;//100
sk=1;_delay(de);
sk=0;_delay(de);
di=0;
sk=1;_delay(de);
sk=0;_delay(de);
di=0;
sk=1;_delay(de);
sk=0;_delay(de);
if(a>=1)en_dis=0xc0;elseen_dis=0x00;//11x_xxxxb
for(i=0;i<7;i++)
{
di=en_dis&0x80;
sk=1;_delay(de);
sk=0;_delay(de);
en_dis<<=1;
}
cs=0;
}
/*********************************************
*******voiderase_all93c46(void)***********
a>0writea=0;erase
*********************************************/
voiderase(void)
{
uchari,erase;
cs=1;_delay(de);
sk=0;_delay(de);
di=1;//100
sk=1;_delay(de);
sk=0;_delay(de);
di=0;
sk=1;_delay(de);
sk=0;_delay(de);
di=0;
sk=1;_delay(de);
sk=0;_delay(de);
//if(a>0)erase=0x40;elseerase=0x20;
erase=0x80;
for(i=0;i<7;i++)
{
di=erase&0x80;
sk=1;_delay(de);
sk=0;_delay(de);
erase<<=1;
}
cs=0;
}

/*********************