汽頭字EEPROM謹忖准響亟荷恬扮會

<貧匯准和匯准>

厘断響函 EEPROM 議扮昨載酒汽?EEPROM 功象厘断侭僕議扮會?岷俊祥委方象僕竃栖阻?徽頁亟 EEPROM 抜短嗤宸担酒汽阻。公 EEPROM 窟僕方象朔?枠隠贋壓阻 EEPROM議産贋?EEPROM 駅倬勣委産贋嶄議方象衣卞欺“掲叟払”議曝囃?嘉嬬器欺渠窮音卿払議丼惚。遇吏掲叟払曝囃亟俶勣匯協議扮寂?耽嶽匂周音頼畠匯劔?ATMEL 巷望議 24C02 議宸倖亟秘扮寂恷互音階狛 5ms。壓吏掲叟払曝囃亟議狛殻?EEPROM 頁音氏壅峒哘厘断議恵諒議?音叙俊辺音欺厘断議方象?厘断軸聞喘 I²C 炎彈議儖峽庁塀肇儖峽?EEPROM 脅音氏哘基?祥泌揖宸倖悳?貧短嗤宸倖匂周匯劔。方象亟秘掲叟払曝囃頼穎朔?EEPROM 壅肝志鹸屎械?辛參屎械響亟阻。

聾伉議揖僥?壓心貧匯准殻會議扮昨氏窟孖?厘断亟方象議椎粁旗鷹?糞縞貧厘断嗤肇響哘基了 ACK?徽頁響欺阻哘基了厘断匆短嗤恂販採侃尖。宸頁咀葎厘断匯肝峪亟匯倖忖准議方象序肇?吉欺和肝嶷仟貧窮壅亟議扮昨?扮寂刃協垓垓階狛阻 5ms?徽頁泌惚厘断頁銭偬亟秘叱倖忖准議扮昨?祥駅倬誼深打欺哘基了議諒籾阻。亟秘匯倖忖准朔?壅亟秘和匯倖忖准岻念?厘断駅倬勣吉棋 EEPROM 壅肝峒哘嘉辛參?寄社廣吭厘断殻會議亟隈?辛參僥楼匯和。

岻念厘断岑祇園亟謹.c 猟周卞峅議圭宴來阻?云准殻會才貧匯准議 Lcd1602.c 猟周才I2C.c 猟周頼畠頁匯劔議?咀緩宸肝厘断峪委 main.c 猟周公寄社窟竃栖?逸寄社蛍裂苧易。

遇揖僥断抜音嬬宸劔?揖僥断頁兜僥?載謹岑紛才室派俶勣謹膳嘉嬬庚耕和栖?咀緩耽倖殻會珊頁秀咏寄社壓低議 Keil 罷周貧匯倖旗鷹匯倖旗鷹議巴竃栖。
/*****************************I2C.c 猟周殻會坿旗鷹*******************************/
?緩侃福待?辛歌深岻念嫗准議旗鷹?
/***************************Lcd1602.c 猟周殻會坿旗鷹*****************************/
?緩侃福待?辛歌深岻念嫗准議旗鷹?

/*****************************main.c 猟周殻會坿旗鷹******************************/
#include <reg52.h>
extern void InitLcd1602();
extern void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str);
extern void I2CStart();
extern void I2CStop();
extern unsigned char I2CReadACK();
extern unsigned char I2CReadNAK();
extern bit I2CWrite(unsigned char dat);
void E2Read(unsigned char *buf, unsigned char addr, unsigned char len);
void E2Write(unsigned char *buf, unsigned char addr, unsigned char len);
void MemToStr(unsigned char *str, unsigned char *src, unsigned char len);
void main(){
 unsigned char i;
 unsigned char buf[5];
 unsigned char str[20];
 InitLcd1602(); //兜兵晒匣唱
 E2Read(buf, 0x90, sizeof(buf)); //貫 E2 嶄響函匯粁方象
 MemToStr(str, buf, sizeof(buf)); //廬算葎噴鎗序崙忖憲堪
 LcdShowStr(0, 0, str); //?塋承述詐??
 for (i=0; i<sizeof(buf); i++){ //方象卆肝+1,+2,+3...
 buf[i] = buf[i] + 1 + i;
 }
 E2Write(buf, 0x90, sizeof(buf)); //壅亟指欺 E2 嶄
 while(1);
}
/* 繍匯粁坪贋方象廬算葎噴鎗序崙鯉塀議忖憲堪?
str-忖憲堪峺寞?src-坿方象仇峽?len-方象海業 */
void MemToStr(unsigned char *str, unsigned char *src, unsigned char len){
 unsigned char tmp;
 
 while (len--){
 tmp = *src >> 4; //枠函互 4 了
 if (tmp <= 9){ //廬算葎 0-9 賜 A-F
 *str++ = tmp + '0';
 }else{
 *str++ = tmp - 10 + 'A';
 }
 tmp = *src & 0x0F; //壅函詰 4 了
 if (tmp <= 9){ //廬算葎 0-9 賜 A-F
 *str++ = tmp + '0';
 }else{
 *str++ = tmp - 10 + 'A';
 }
 *str++ = ' '; //廬算頼匯倖忖准耶紗匯倖腎鯉
 src++;
 }
}
/* E2 響函痕方?buf-方象俊辺峺寞?addr-E2 嶄議軟兵仇峽?len-響函海業 */
void E2Read(unsigned char *buf, unsigned char addr, unsigned char len){
 do { //喘儖峽荷恬臥儂輝念頁倦辛序佩響亟荷恬
 I2CStart();
 if (I2CWrite(0x50<<1)){ //哘基夸柳竃儉桟?掲哘基夸序佩和匯肝臥儂
 break;
 }
 I2CStop();
 } while(1);
 I2CWrite(addr); //亟秘軟兵仇峽
 I2CStart(); //窟僕嶷鹸尼強佚催
 I2CWrite((0x50<<1)|0x01); //儖峽匂周?朔偬葎響荷恬
 while (len > 1){ //銭偬響函 len-1 倖忖准
 *buf++ = I2CReadACK(); //恷朔忖准岻念葎響函荷恬+哘基
 len--;
 }
 *buf = I2CReadNAK(); //恷朔匯倖忖准葎響函荷恬+掲哘基
 I2CStop();
}
/* E2 亟秘痕方?buf-坿方象峺寞?addr-E2 嶄議軟兵仇峽?len-亟秘海業 */
void E2Write(unsigned char *buf, unsigned char addr, unsigned char len){
 while (len--){
 do { //喘儖峽荷恬臥儂輝念頁倦辛序佩響亟荷恬
 I2CStart();
 if (I2CWrite(0x50<<1)){ //哘基夸柳竃儉桟?掲哘基夸序佩和匯肝臥儂
 break;
 }
 I2CStop();
 } while(1);
 I2CWrite(addr++); //亟秘軟兵仇峽
 I2CWrite(*buf++); //亟秘匯倖忖准方象
 I2CStop(); //潤崩亟荷恬?參吉棋亟秘頼撹
 }
}

痕方 MemToStr?辛參委匯粁坪贋方象廬算撹噴鎗序崙忖憲堪議侘塀。喇噐厘断貫EEPROM 響竃栖議頁屎械議方象?遇 1602 匣唱俊辺議頁 ASCII 鷹忖憲?咀緩厘断勣宥狛匣唱委方象?塋廠歆官慚誅藩┨閬参竣Ĺ察K齋┻絞悩楴魑ィx擁念冀尋燦沆崕攀鎚鍪欷? 4 了才詰 4 了蛍蝕?才 9 序佩曳熟?泌惚弌噐吉噐 9?夸岷俊紗„0‟廬葎 0 ?9 議 ASCII 鷹?泌惚寄噐 9?夸枠受渠 10 壅紗„A‟軸辛廬葎 A ?F 議 ASCII 鷹。

痕方 E2Read?厘断壓響岻念?勣臥儂匯和輝念頁倦辛參序佩響亟荷恬?EEPROM 屎械峒哘嘉辛參序佩。序佩朔?響恷朔匯倖忖准岻念議?畠何公竃 ACK?遇響頼阻恷朔匯倖忖准?厘断勣公竃匯倖 NAK。

痕方 E2Write?耽肝亟荷恬岻念?厘断脅勣序佩臥儂登僅輝念 EEPROM 頁倦峒哘?屎械峒哘朔嘉辛參亟方象。

<貧匯准和匯准>

汽頭字EEPROM謹忖准響亟荷恬扮會

縮殻朕村