//±¾º¯Êý¼¯À´×Ô¡°51µ¥Æ¬»úÊÀ½ç¡±£¬×÷Õß°ßÖñ¶¡¶¡£¨ÄôСÃÍ£©¡£ //Ö÷Ò³µØÖ·http://www.mcu51.com //´®¿ÚÖжϷþÎñ³ÌÐò£¬½öÐè×ö¼òµ¥µ÷Óü´¿ÉÍê³É´®¿ÚÊäÈëÊä³öµÄ´¦Àí //³öÈë¾ùÉèÓлº³åÇø£¬´óС¿ÉÈÎÒâÉèÖᣠ//¿É¹©Ê¹Óõĺ¯ÊýÃû: //char getbyte(void);´Ó½ÓÊÕ»º³åÇøÈ¡Ò»¸öbyte,Èç²»ÏëµÈ´ýÔòÔÚµ÷ÓÃÇ°¼ì²âinbufsignÊÇ·ñΪ1¡£ //getline(char idata *line, unsigned char n); »ñÈ¡Ò»ÐÐÊý¾Ý»Ø³µ½áÊø£¬±ØÐ붨Òå×î´óÊäÈë×Ö·ûÊý //putbyte(char c);·ÅÈëÒ»¸ö×Ö½Úµ½·¢ËÍ»º³åÇø //putbytes(unsigned char *outplace,j);·ÅÒ»´®Êý¾Ýµ½·¢ËÍ»º³åÇø£¬×Ô¶¨Ò峤¶È //putstring(unsigned char code *puts);·¢ËÍÒ»¸ö¶¨ÒåÔÚ³ÌÐò´æ´¢ÇøµÄ×Ö·û´®µ½´®¿Ú //puthex(unsigned char c);·¢ËÍÒ»¸ö×Ö½ÚµÄhexÂ룬·Ö³ÉÁ½¸ö×Ö½Ú·¢¡£ //putchar(uchar c,uchar j);Êä³öÒ»¸öÎÞ·ûºÅ×Ö·ûÊýµÄÊ®½øÖƱíʾ£¬±ØÐë±êʾСÊýµãµÄλÖÃ,×Ô¶¯É¾³ýÇ°ÃæÎÞÓõÄÁã //putint(uint ui,uchar j);Êä³öÒ»¸öÎÞ·ûºÅÕûÐÍÊýµÄÊ®½øÖƱíʾ£¬±ØÐë±êʾСÊýµãµÄλÖÃ,×Ô¶¯É¾³ýÇ°ÃæÎÞÓõÄÁã //delay(unsigned char d); ÑÓʱn x 100ns //putinbuf(uchar c);È˹¤ÊäÈëÒ»¸ö×Ö·ûµ½ÊäÈ뻺³åÇø //CR;·¢ËÍÒ»¸ö»Ø³µ»»ÐÐ //************************************************************************* #include #define uchar unsigned char #define uint unsigned int #define OLEN 32 /* size of serial transmission buffer */ idata unsigned char outbuf[OLEN]; /* storage for transmission buffer */ unsigned char idata *outlast=outbuf; //×îºóÓÉÖжϴ«Êä³öÈ¥µÄ×Ö½ÚλÖà unsigned char idata *putlast=outbuf; //×îºó·ÅÈë·¢ËÍ»º³åÇøµÄ×Ö½ÚλÖà #define ILEN 12 /* size of serial receiving buffer */ idata unsigned char inbuf[ILEN]; unsigned char idata *inlast=inbuf; //×îºóÓÉÖжϽøÈë½ÓÊÕ»º³åÇøµÄ×Ö½ÚλÖà unsigned char idata *getlast=inbuf; //×îºóÈ¡×ßµÄ×Ö½ÚλÖà bit outbufsign0; //×îºóÒ»¸öÊý¾ÝÓSBUF·¢Íê±êÖ¾ ·¢Íꣽ0 bit outbufsign; //Êä³ö»º³åÇø·Ç¿Õ±êÖ¾ ÓÐ=1 bit inbufsign; //½ÓÊÕ»º³åÇø·Ç¿Õ±êÖ¾ ÓÐ=1 bit inbufful; //ÊäÈ뻺³åÇøÂú±êÖ¾ Âú=1 #define CR putstring("\r\n") //CR=»Ø³µ»»ÐÐ //***************************** //ÑÓʱn x 100ns void delay(unsigned char d) //ÔÚÔ´³ÌÐò¿ªÍ·¶¨ÒåÊÇ·ñÓÃw77e58»ò22¡£1184M¾§Õñ {unsigned char j; do{ d--; //110592 & 89c52 #ifndef cpuw77e58 #ifndef xtal221184 j=21; //k=38 cpu80320 100us k=21 cpu 8052 #else j=42; #endif #else #ifndef xtal221184 j=38; #else j=76; #endif #endif do {j--;} while(j!=0); }while(d!=0); } //***************************** //·ÅÈëÒ»¸ö×Ö½Úµ½·¢ËÍ»º³åÇø putbyte(char c) {uchar i,j; ES=0; /*ÔÝÍ£´®ÐÐÖжϣ¬ÒÔÃâÊý¾Ý±È½Ïʱ³ö´í³* */ //if (outlast=putlast) while ( (((outlast-putlast)==2) && (outlast > putlast )) || ((outlast < putlast) && (OLEN-(putlast-outlast)==2))) { ES=1; c++;c--;ES=0; // i=(0-TH1); // do{i--;j=39; do {j--;}while(j!=0); }while(i!=0); //i=39 } *putlast=c; //·Å×Ö½Ú½øÈ뻺³åÇø putlast++; //·¢ËÍ»º³åÇøÖ¸Õë¼ÓÒ» if (putlast==outbuf+OLEN) putlast=outbuf; //Ö¸Õëµ½Á˶¥²¿»»µ½µ×²¿ outbufsign=1; if (!outbufsign0) {outbufsign0=1;TI=1; } //»º³åÇø¿ªÊ¼Îª¿ÕÖÃΪÓУ¬Æô¶¯·¢ËÍ ES=1; } //****************************** //·ÅÒ»´®Êý¾Ýµ½·¢ËÍ»º³åÇø putbytes(unsigned char *outplace,unsigned char j) { int i; for(i=0;i>4)&0x0f; putbyte(hex_[ch]); ch=c&0x0f; putbyte(hex_[ch]); } //************************************* //´Ó½ÓÊÕ»º³åÇøÈ¡Ò»¸öbyte,Èç²»ÏëµÈ´ýÔòÔÚµ÷ÓÃÇ°¼ì²âinbufsignÊÇ·ñΪ1¡£ uchar getbyte (void) { char idata c ; while (!inbufsign); //»º³åÇø¿ÕµÈ´ý ES=0; c= *getlast; //È¡Êý¾Ý getlast++; //×îºóÈ¡×ßµÄÊý¾ÝλÖüÓÒ» inbufful=0; //ÊäÈ뻺³åÇøµÄÂú±êÖ¾ÇåÁã if (getlast==inbuf+ILEN) getlast=inbuf; //µØÖ·µ½¶¥²¿»Øµ½µ×²¿ if (getlast==inlast) inbufsign=0; //µØÖ·ÏàµÈÖýÓÊÕ»º³åÇø¿Õ¿Õ±êÖ¾£¬ÔÙÈ¡ÊýÇ°Òª¼ì¸Ã±êÖ¾ ES=1; return (c); //È¡»ØÊý¾Ý } //***************************************** //½ÓÊÕÒ»ÐÐÊý¾Ý£¬±ØÐ붨Òå·ÅÊý¾Ý´®µÄÖ¸ÕëλÖúʹóС del=0x7f,backspace=0x08,cr=0x0d,lf=0x0a void getline (uchar idata *line, unsigned char n) { unsigned char cnt = 0; //¶¨ÒåÒѽÓÊյij¤¶È char c; do { if ((c = getbyte ()) == 0x0d) c = 0x00; //¶ÁÒ»¸ö×Ö½Ú£¬Èç¹ûÊǻسµ»»³É½áÊø·û if (c == 0x08 || c == 0x7f) //BACKSPACE ºÍ DEL µÄ´¦Àí { if (cnt != 0) //ÒѾ­ÊäÈëÍ˵ôÒ»¸ö×Ö·û {cnt--; //×ÜÊýÄ¿¼õÒ» line--; //Ö¸Õë¼õÒ» putbyte (0x08); //ÆÁÄ»»ØÏԵĴ¦Àí putbyte (' '); putbyte (0x08); } } else { putbyte (*line = c); //ÆäËû×Ö·ûÈ¡È룬»ØÏÔ line++; //Ö¸Õë¼ÓÒ» cnt++; //×ÜÊýÄ¿¼ÓÒ» } } while (cnt < n - 1 && c != 0x00 && c!=0x1b); //ÊýÄ¿µ½ÁË£¬»Ø³µ»òESCÍ£Ö¹ *line = 0; //ÔÙ¼ÓÉÏÍ£Ö¹·û0 } //**************************** //È˹¤ÊäÈëÒ»¸ö×Ö·ûµ½ÊäÈ뻺³åÇø putinbuf(uchar c) {ES=0; if(!inbufful) {*inlast= c; //·ÅÈëÊý¾Ý inlast++; //×îºó·ÅÈëµÄλÖüÓÒ» if (inlast==inbuf+ILEN) inlast=inbuf;//µØÖ·µ½¶¥²¿»Øµ½µ×²¿ if (inlast==getlast) inbufful=1; //½ÓÊÕ»º³åÇøÂúÖÃÂú±êÖ¾ inbufsign=1; } ES=1; } //***************************************** //´®¿ÚÖжϴ¦Àí serial () interrupt 4 { if (TI ) { TI = 0; if (outbufsign) //if (putlast==outlast) outbufsign=0; //else {SBUF=*outlast; //δ·¢ËÍÍê¼ÌÐø·¢ËÍ outlast++; //×îºó´«³öÈ¥µÄ×Ö½ÚλÖüÓÒ» if (outlast==outbuf+OLEN) outlast=outbuf;//µØÖ·µ½¶¥²¿»Øµ½µ×²¿ if (putlast==outlast) outbufsign=0; //Êý¾Ý·¢ËÍÍêÖ÷¢ËÍ»º³åÇø¿Õ±êÖ¾ } else outbufsign0=0; } if (RI) { RI = 0; if(!inbufful) { *inlast= SBUF; //·ÅÈëÊý¾Ý inlast++; //×îºó·ÅÈëµÄλÖüÓÒ» inbufsign=1; if (inlast==inbuf+ILEN) inlast=inbuf;//µØÖ·µ½¶¥²¿»Øµ½µ×²¿ if (inlast==getlast) inbufful=1; //½ÓÊÕ»º³åÇøÂúÖÃÂú±êÖ¾ } } } //***************************** //´®¿Ú³õʼ»¯ 0xfd=19200,0xfa=9600,0xf4=4800,0xe8=2400,0xd0=1200 serial_init () { SCON = 0x50; /* mode 1: 8-bit UART, enable receiver */ TMOD |= 0x20; /* timer 1 mode 2: 8-Bit reload */ PCON |= 0x80; TH1 = 0xfA;//fa, //baud*2 /* reload value 19200 baud */ TR1 = 1; /* timer 1 run */ ES = 1; REN=1; EA=1; SM2=1; //SM2=1ʱÊÕµ½µÄµÚ9λΪ1²ÅÖÃλRI±êÖ¾ TMOD |=0x01; //th1 auto load 2X8,th0 1X16 TH0=31; TL0=0; //X 32 =1S TR0=1; //ET0=1; } //***************** //²âÊÔÓÃÖ÷º¯Êý void main(void) {char c; idata unsigned char free[16]; unsigned char idata *freep=free; serial_init(); putstring("jdioptuejls;j;klj"); delay(10); while(1) { putstring("com is ready! ");} c=getbyte(); putbyte(0x20); puthex(c); switch(c) {case 'r': putbytes(inbuf,ILEN); break; case 'g': getline(freep,10); putbyte(0x20); putstring(freep); break; default: putbyte(c); // } } }