93c46讀寫程序

93c46讀寫程序

“93c46讀寫程序”
#include?
sbit?CS=P2^7;
sbit?SK=P2^6;
sbit?DI=P2^5;
sbit?DO=P2^4;

/*
extern?unsigned?char?ReadChar(unsigned?char?address);
extern?void?WriteChar(unsigned?char?address,unsigned?char?InData);
extern?void?ReadString(unsigned?char?data?*RamAddress,unsigned?char?RomAddress,
unsigned?char?Number);
extern?void?WriteString(unsigned?char?data?*RamAddress,unsigned?char?RomAddress,unsigned?char?Number);
*/

//?Write?enable?must?precede?all?programming?modes.
void?Ewen(void)?{
?unsigned?char?temp,InData;
?CS=0;?
?SK=0;
?CS=1;
?InData=0x98;?//?10011XXXX
?for(temp=9;temp!=0;temp--)?{?//?9
??DI=InData&0x80;
??SK=1;?SK=0;
??InData<<=1;
?}
?CS=0;
}

//?Disables?all?programming?instructions.
void?Ewds(void)?{
?unsigned?char?temp,InData;
?CS=0;
?SK=0;
?CS=1;
?InData=0x80;?//?10000XXXX
?for(temp=9;temp!=0;temp--)?{?//?9
??DI=InData&0x80;
??SK=1;?SK=0;
??InData<<=1;
?}
?CS=0;
}

//?Reads?data?stored?in?memory,?at?specified?address.
unsigned?int?Read(unsigned?char?address)?{
?unsigned?char?temp;
?unsigned?int?result;
?Ewen();
?SK=0;?DI=1;?//?110?A5-A0
?CS=0;?CS=1;
?SK=1;?SK=0;???//?1
?address=address&0x3f 0x80;
?for(temp=8;temp!=0;temp--)?{?//?8
??DI=address&0x80;
??SK=1;?SK=0;
??address<<=1;
?}
?DO=1;
?for(temp=16;temp!=0;temp--)?{?//?16
??SK=1;
??result=(result<<1) DO;
??SK=0;
?}
?CS=0;
?Ewds();
?return(result);
}

//?Writes?memory?location?An?-?A0.
void?Write(unsigned?char?address,unsigned?int?InData)?{
?unsigned?char?temp;
?Ewen();
?SK=0;?DI=1;?//?101?A5-A0
?CS=0;?CS=1;
?SK=1;?SK=0;???//?1
?address=address&0x3f 0x40;
?for(temp=8;temp!=0;temp--)?{?//?8
??DI=address&0x80;
??SK=1;?SK=0;
??address<<=1;
?}
?for(temp=16;temp!=0;temp--)?{?//?16
??DI=InData&0x8000;
??SK=1;?SK=0;
??InData<<=1;
?}
?CS=0;?DO=1;
?CS=1;?SK=1;
?while(DO==0)?{???//?busy?test
??SK=0;?SK=1;
?}
?SK=0;?CS=0;
?Ewds();
}

/*
//?Erase?memory?location?An?-?A0.
void?Erase(unsigned?char?address)?{
?unsigned?char?temp;
?Ewen();
?SK=0;?DI=1;?//?111?A5-A0
?CS=0;?CS=1;
?SK=1;?SK=0;???//?1
?address =0xc0;
?for(temp=8;temp!=0;temp--)?{?//?8
??DI=address&0x80;
??SK=1;?SK=0;
??address<<=1;
?}
?CS=0;?DO=1;
?CS=1;?SK=1;
?while(DO==0)?{
??SK=0;?SK=1;
?}
?SK=0;?CS=0;
?Ewds();
}

//?Erases?all?memory?locations.?Valid?only?at?VCC?=?4.5V?to?5.5V.
void?Eral(void)?{
?unsigned?char?temp,InData;
?Ewen();
?CS=0;
?SK=0;
?CS=1;
?InData=0x90;?//?10010XXXX
?for(temp=9;temp!=0;temp--)?{?//?9
??DI=InData&0x80;
??SK=1;?SK=0;
??InData<<=1;
?}
?CS=0;?DO=1;
?CS=1;?SK=1;
?while(DO==0)?{
??SK=0;?SK=1;
?}
?SK=0;?CS=0;
?Ewds();
}

//?Writes?all?memory?locations.?Valid?only?at?VCC?=?4.5V?to?5.5V.
void?Wral(unsigned?int?InData)?{
?unsigned?char?temp,address;
?Ewen();
?CS=0;
?SK=0;
?CS=1;
?address=0x88;?//?10001XXXX
?for(temp=9;temp!=0;temp--)?{?//?9
??DI=address&0x80;
??SK=1;?SK=0;
??address<<=1;
?}
?for(temp=16;temp!=0;temp--)?{?//?16
??DI=InData&0x8000;
??SK=1;?SK=0;
??InData<<=1;
?}
?CS=0;?DO=1;
?CS=1;?SK=1;
?while(DO==0)?{
??SK=0;?SK=1;
?}
?SK=0;?CS=0;
?Ewds();
}

*/

unsigned?char?ReadChar(unsigned?char?address)?{
?unsigned?char?temp=address>>1;
?if(address&0x01)?return((unsigned?char)(Read(temp)>>8));
?else?return((unsigned?char)(Read(temp)));
}

void?WriteChar(unsigned?char?address,unsigned?char?InData)?{
?unsigned?char?temp=address>>1;
?if(address&0x01)?Write(temp,(unsigned?int)(Read(temp)&0x00ff (InData<<8)));
?else?Write(temp,(unsigned?int)(Read(temp)&0xff00 InData));
}

void?ReadString(unsigned?char?data?*RamAddress,unsigned?char?RomAddress,unsigned?char?Number)?{
?while(Number!=0)?{
??*RamAddress=ReadChar(RomAddress);
??RamAddress++;
??RomAddress++;
??Number--;
?}
}

void?WriteString(unsigned?char?data?*RamAddress,unsigned?char?RomAddress,unsigned?char?Number)?{
?unsigned?int?temp;
?if(Number==0)?return;
?if(RomAddress&0x01)?{
??WriteChar(RomAddress,*RamAddress);
??RamAddress++;
??RomAddress++;
??Number--;
?}
?if(Number==0)?return;
?while(Number>>1)?{
??temp=*RamAddress;
??RamAddress++;
??temp=temp (*RamAddress)<<8;
??RamAddress++;
??Write(RomAddress>>1,temp);
??RomAddress++;
??RomAddress++;
??Number--;
??Number--;
?}
?if(Number)?WriteChar(RomAddress,*RamAddress);