DS1302議BURST庁塀

<貧匯准和匯准>

序佩恢瞳蝕窟議扮昨?貸辞議冢女來掲械嶷勣?泌惚匯倖恢瞳賜宀殻會貸辞貧音冢女?祥嗤辛嬬竃孖孔嬬貧議危列。曳泌厘断 15.3.4 准戦議宸倖殻會?厘断壅指綱匯和?輝汽頭字協扮匂扮寂欺阻 200ms 朔?厘断銭偬委 DS1302 議扮寂歌方議 7 倖忖准響阻竃栖。徽頁音砿奕担響?脅氏嗤匯倖扮寂餓?壓自極議秤趨和祥氏竃孖宸劔匯嶽秤趨?邪泌厘断輝念議扮寂頁 00:00:59?厘断枠響昼?響欺議昼頁 59?隼朔壅肇響蛍嶝?遇祥壓響頼昼欺珊隆蝕兵響蛍嶝議宸粁扮寂坪?胡挫扮寂序了阻?延撹阻 00:01:00 宸倖扮寂?厘断響欺議蛍嶝祥頁 01??塋菖斷詐?肋融甞氐嶢燦? 00:01:59?宸倖扮寂載苧?塋粘輓鶺帖3氐嶮盡氅別盖銚殿兵?。i?抜頁糞糞壓壓辛嬬贋壓議。

葎阻盾畳宸倖諒籾?仂頭皆社刃協勣公厘断戻工匯嶽盾畳圭宛?宸祥頁 DS1302 議融窟庁塀。融窟庁塀匆蛍葎 RAM 融窟庁塀才扮嶝融窟庁塀?RAM 何蛍厘断音讐?厘断峪心才扮嶝屢購議 clock burst mode。

輝厘断亟峺綜欺 DS1302 議扮昨?峪勣厘断繍勣亟議 5 了仇峽畠何亟 1?軸響荷恬喘 0xBF?亟荷恬喘 0xBE?宸劔議峺綜僕公 DS1302 岻朔?万祥氏徭強紛艶竃栖頁 burst 庁塀?瀧貧委侭嗤議 8 倖忖准揖扮迄贋欺総翌議 8 倖忖准議篠贋匂産喝曝坪?宸劔扮嶝写偬恠?遇厘断響方象頁貫総翌匯倖産喝曝坪響函議。揖劔議祇尖?泌惚厘断喘 burst 庁塀亟方象?椎担厘断匆頁枠亟欺宸倖産喝曝坪?恷嶮 DS1302 氏委宸倖産喝曝坪議方象匯肝來僕欺万議扮嶝篠贋匂坪。

勣廣吭議頁?音砿頁響珊頁亟?峪勣聞喘扮嶝議 burst 庁塀?夸駅倬匯肝來響亟 8 倖篠贋匂?勣委扮嶝議篠贋匂頼畠響竃栖賜宀頼畠亟序肇。

和円祥戻工匯倖 burst 庁塀議箭殻公寄社僥楼匯和?殻會議孔嬬珊頁嚥貧匯准匯劔議。
/***************************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>
sbit DS1302_CE = P1^7;
sbit DS1302_CK = P3^5;
sbit DS1302_IO = P3^4;
bit flag200ms = 0; //200ms 協扮炎崗
unsigned char T0RH = 0; //T0 嶷墮峙議互忖准
unsigned char T0RL = 0; //T0 嶷墮峙議詰忖准
void ConfigTimer0(unsigned int ms);
void InitDS1302();
void DS1302BurstRead(unsigned char *dat);
extern void InitLcd1602();
extern void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str);
void main(){
 unsigned char psec=0xAA; //昼姥芸?兜峙 AA 鳩隠遍肝響函扮寂朔氏泡仟?塋?
 unsigned char time[8]; //輝念扮寂方怏
 unsigned char str[12]; //忖憲堪廬算産喝曝
 
 EA = 1; //蝕悳嶄僅
 ConfigTimer0(1); //T0 協扮 1ms
 InitDS1302(); //兜兵晒糞扮扮嶝
 InitLcd1602(); //兜兵晒匣唱
 
 while (1){
 if (flag200ms){ //耽 200ms 響函卆肝扮寂
 flag200ms = 0;
 DS1302BurstRead(time); //響函 DS1302 輝念扮寂
 
 if (psec != time[0]){ //殊霞欺扮寂嗤延晒扮泡仟?塋?
 str[0] = '2'; //耶紗定芸議互 2 了?20
 str[1] = '0';
 str[2] = (time[6] >> 4) + '0'; //“定”互了方忖廬算葎 ASCII 鷹
 str[3] = (time[6]&0x0F) + '0'; //“定”詰了方忖廬算葎 ASCII 鷹
 str[4] = '-'; //耶紗晩豚蛍侯憲
 str[5] = (time[4] >> 4) + '0'; //“埖”
 str[6] = (time[4]&0x0F) + '0';
 str[7] = '-';
 str[8] = (time[3] >> 4) + '0'; //“晩”
 str[9] = (time[3]&0x0F) + '0';
 str[10] = '0円';
 LcdShowStr(0, 0, str); //?塋承述詐У諜斷姉?
 
 str[0] = (time[5]&0x0F) + '0'; //“佛豚”
 str[1] = '0円';
 LcdShowStr(11, 0, "week");
 LcdShowStr(15, 0, str); //?塋承述詐У諜斷姉?
 
 str[0] = (time[2] >> 4) + '0'; //“扮”
 str[1] = (time[2]&0x0F) + '0';
 str[2] = ':'; //耶紗扮寂蛍侯憲
 str[3] = (time[1] >> 4) + '0'; //“蛍”
 str[4] = (time[1]&0x0F) + '0';
 str[5] = ':';
 str[6] = (time[0] >> 4) + '0'; //“昼”
 str[7] = (time[0]&0x0F) + '0';
 str[8] = '0円';
 LcdShowStr(4, 1, str); //?塋承述詐У諜擽鰣?
 
 psec = time[0]; //喘輝念峙厚仟貧肝昼方
 }
 }
 }
}
/* 窟僕匯倖忖准欺 DS1302 宥佚悳?貧 */
void DS1302ByteWrite(unsigned char dat){
 unsigned char mask;
 for (mask=0x01; mask!=0; mask<<=1){ //詰了壓念?幟了卞竃
 if ((mask&dat) != 0){ //遍枠補竃乎了方象
 DS1302_IO = 1;
 }else{
 DS1302_IO = 0;
 }
 DS1302_CK = 1; //隼朔性互扮嶝
 DS1302_CK = 0; //壅性詰扮嶝?頼撹匯倖了議荷恬
 }
 DS1302_IO = 1; //恷朔鳩隠瞥慧 IO 哈重
}
/* 喇 DS1302 宥佚悳?貧響函匯倖忖准 */
unsigned char DS1302ByteRead(){
 unsigned char mask;
 unsigned char dat = 0;
 
 for (mask=0x01; mask!=0; mask<<=1){ //詰了壓念?幟了響函
 if (DS1302_IO != 0){ //遍枠響函緩扮議 IO 哈重?旺譜崔 dat 嶄議斤哘了
 dat |= mask;
 }
 DS1302_CK = 1; //隼朔性互扮嶝
 DS1302_CK = 0; //壅性詰扮嶝?頼撹匯倖了議荷恬
 }
 return dat; //恷朔卦指響欺議忖准方象
}
/* 喘汽肝亟荷恬?蝶匯篠贋匂亟秘匯倖忖准?reg-篠贋匂仇峽?dat-棋亟秘忖准 */
void DS1302SingleWrite(unsigned char reg, unsigned char dat){
 DS1302_CE = 1; //聞嬬頭僉佚催
 DS1302ByteWrite((reg<<1)|0x80); //窟僕亟篠贋匂峺綜
 DS1302ByteWrite(dat); //亟秘忖准方象
 DS1302_CE = 0; //茅嬬頭僉佚催
}
/* 喘汽肝響荷恬貫蝶匯篠贋匂響函匯倖忖准?reg-篠贋匂仇峽?卦指峙-響欺議忖准 */
unsigned char DS1302SingleRead(unsigned char reg){
 unsigned char dat;
 
 DS1302_CE = 1; //聞嬬頭僉佚催
 DS1302ByteWrite((reg<<1)|0x81); //窟僕響篠贋匂峺綜
 dat = DS1302ByteRead(); //響函忖准方象
 DS1302_CE = 0; //茅嬬頭僉佚催
 return dat;
}
/* 喘融窟庁塀銭偬亟秘 8 倖篠贋匂方象?dat-棋亟秘方象峺寞 */
void DS1302BurstWrite(unsigned char *dat){
 unsigned char i;
 
 DS1302_CE = 1;
 DS1302ByteWrite(0xBE); //窟僕融窟亟篠贋匂峺綜
 
 for (i=0; i<8; i++){ //銭偬亟秘 8 忖准方象
 DS1302ByteWrite(dat[i]);
 }
 DS1302_CE = 0;
}
/* 喘融窟庁塀銭偬響函 8 倖篠贋匂議方象?dat-響函方象議俊辺峺寞 */
void DS1302BurstRead(unsigned char *dat){
 unsigned char i;
 
 DS1302_CE = 1;
 DS1302ByteWrite(0xBF); //窟僕融窟響篠贋匂峺綜
 for (i=0; i<8; i++){ //銭偬響函 8 倖忖准
 dat[i] = DS1302ByteRead();
 }
 DS1302_CE = 0;
}
/* DS1302 兜兵晒?泌窟伏渠窮夸嶷仟譜崔兜兵扮寂 */
void InitDS1302(){
 unsigned char dat;
 unsigned char code InitTime[] = { //2013 定 10 埖 8 晩 佛豚屈 12:30:00
 0x00,0x30,0x12, 0x08, 0x10, 0x02, 0x13
 };
 
 DS1302_CE = 0; //兜兵晒 DS1302 宥佚哈重
 DS1302_CK = 0;
 dat = DS1302SingleRead(0); //響函昼篠贋匂
 
 if ((dat & 0x80) != 0){ //喇昼篠贋匂恷互了 CH 議峙登僅 DS1302 頁倦厮唯峭
 DS1302SingleWrite(7, 0x00); //碍?亟隠擦參塋俯亟秘方象
 DS1302BurstWrite(InitTime); //譜崔 DS1302 葎潮範議兜兵扮寂
 }
}
/* 塘崔旺尼強 T0?ms-T0 協扮扮寂 */
void ConfigTimer0(unsigned int ms){
 unsigned long tmp; //匝扮延楚
 
 tmp = 11059200 / 12; //協扮匂柴方撞楕
 tmp = (tmp * ms) / 1000; //柴麻侭俶議柴方峙
 tmp = 65536 - tmp; //柴麻協扮匂嶷墮峙
 tmp = tmp + 12; //温灰嶄僅峒哘决扮夛撹議列餓
 T0RH = (unsigned char)(tmp>>8); //協扮匂嶷墮峙介蛍葎互詰忖准
 T0RL = (unsigned char)tmp;
 TMOD &= 0xF0; //賠巣 T0 議陣崙了
 TMOD |= 0x01; //塘崔 T0 葎庁塀 1
 TH0 = T0RH; //紗墮 T0 嶷墮峙
 TL0 = T0RL;
 ET0 = 1; //聞嬬 T0 嶄僅
 TR0 = 1; //尼強 T0
}
/* T0 嶄僅捲暦痕方?峇佩 200ms 協扮 */
void InterruptTimer0() interrupt 1{
 static unsigned char tmr200ms = 0;
 TH0 = T0RH; //嶷仟紗墮嶷墮峙
 TL0 = T0RL;
 tmr200ms++;
 if (tmr200ms >= 200){ //協扮 200ms
 tmr200ms = 0;
 flag200ms = 1;
 }
}

<貧匯准和匯准>

DS1302議BURST庁塀

縮殻朕村