?? 93c46讀寫程序.txt
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93c46讀寫程序
#include <reg52.h>
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);
}
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[+5]通過調(diào)試的AT93C46讀寫程序（C語言）
帖子編號： 33339/809950, 發(fā)表用戶:飄揚 發(fā)表時間:2006-2-13 23:04:55 訪問次數(shù):81 發(fā)貼IP:61.143.95.163
文章內(nèi)容:
本程序是我個人根據(jù)現(xiàn)在各個93C46/93C56/93C66讀寫的程序修改而成，歡迎各個讀者就本程序存在的問題提出討論。
/*********************************************************************
通過調(diào)試的AT93C46讀寫程序（C語言）
* 程序說明：本程序?qū)崿F(xiàn)51系列單片機對AT93C46的讀寫，ORG端接地。各位讀者
在使用過程中如果出現(xiàn)那些問題歡迎給我來信。
* 版本： v1.1
* 時間： 2006.2.8
* 作者： 廣州大學松田學院 飄揚
* QQ: 23328100
* E-mail:cy757@21cn.com
*********************************************************************/
#include <reg51.h>
#include <intrins.h>
unsigned char uchar;
#define READ_D 0xc0 //讀指令
#define WRITE_D 0xa0 //寫指令
#define ERASE_D 0xe0 //擦除指令
#define EWEN_D 0x98 //擦/寫允許指令
#define EW_D 0x80 //擦/寫禁止指令
sbit CS = P1^0;
sbit SK = P1^1;
sbit DI = P1^2;
sbit DO = P1^3;
//時鐘函數(shù)
void at93c46_clock(void)
{
SK=0;
_nop_();
SK=1;
}
//輸入函數(shù)；in_data為數(shù)據(jù)，d_bit為輸入數(shù)據(jù)的位數(shù)。
void send(uchar in_data,uchar d_bit)
{
uchar i;
for(i=0;i<d_bit;i++)
{
DI=(bit)(in_data&0x80);
in_data<<=1;
at93c46_clock();
}
}
//接收函數(shù)
uchar receive(void)
{
uchar in_data=0;
uchar j;
DO=1;
while(DO) at93c46_clock();
for(j=0;j<8;j++)
{
at93c46_clock();
in_data=(in_data<<1)|DO;
}
at93c46_clock();
return(in_data);
}
//發(fā)送讀指令和地址，從AT93C46指定的地址中讀取數(shù)據(jù)
uchar read(uchar addr)
{
uchar data_r;
addr<<=1;
send(READ_D,3); //送讀指令
send(addr,7); //送地址
data_r=receive(); //接收數(shù)據(jù)
CS=0;
return(data_r);
}
//擦除操作函數(shù)
void erase(uchar addr)
{
DO=1;
CS=1;
addr<<=1;
send(ERASE_D,3);
send(addr,7);
CS=0;
CS=1;
while(!DO); //等待擦除完畢
CS=0;
}
//將一個字節(jié)數(shù)據(jù)寫入AT93C46指定的地址中。
void wirite(uchar addr,uchar eData)
{
CS=1; //擦/寫允許
send(EWEN_D,10);
CS=0;
_nop_();
erase(addr); //寫數(shù)據(jù)前擦除同樣地址的數(shù)據(jù)
addr<<=1;
CS=1;
send(WRITE_D,3); //送寫指令
send(addr,7); //送地址
send(eData,8);
CS=0;
_nop_();
CS=1;
while(!DO) at93c46_clock(); //等待寫完
CS=0;
//********擦/寫禁止********
_nop_();
CS=1;
send(EW_D,10);
CS=0;
}相關(guān)帖子>>>：不能正常運行嗎？(0字)Adams[6次]2006-2-13 23:28:22煙救生啊.(0字)fence20[5次]2006-2-13 23:40:21you are 奔屙生(0字)Adams[9次]2006-2-13 23:41:24本程序已經(jīng)通過調(diào)試，請各位大蝦看看有那些地方存在不足(0字)飄揚[8次]2006-2-13 23:48:12高智商(0字)馬茲[3次]2006-2-16 9:31:20
'for test 讀寫AT93C46的精練代碼。(15602字)吶喊2004-8-24 13:01:37[80次]
以下代碼經(jīng)調(diào)試通過。代碼少，晶振為11.0592的。貢獻給有需要的朋友們。
適但修改一下時鐘周期和地址位數(shù)便可用于AT93CXX的其它型號。
;AT93C46的匯編讀寫軟件包
;----------------------------------------------------------------------------
CS_93C46 EQU P2.7 ;片選
SK_93C46 EQU P2.6 ;時鐘
DI_93C46 EQU P2.5 ;數(shù)據(jù)輸入
DO_93C46 EQU P2.4 ;數(shù)據(jù)輸出
DATA_HIGH DATA 30H ;待寫數(shù)據(jù)高位
DATA_LOW DATA 31H ;待寫數(shù)據(jù)高位
DATA_ADDRESS DATA 32H ;待讀或?qū)懙牡刂?;******************************************************************
;名稱:讀指令(READ指令)
;功能:把93C46中DATA_ADDRESS所指向的地址單元的數(shù)據(jù)
; 讀到DATA_HIGH(H),DATA_LOW(L)中。
;******************************************************************
READ_93C46:
CLR EA
SETB CS_93C46
MOV A,DATA_ADDRESS
ORL A,#80H ;讀操作碼10A5A4A3A2A1A0B
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