±à¼ÍƼö: |
±¾ÎÄÖ÷Òª½²½âÁË8051µÄCÓïÑÔ±à³Ì,¸ø³öÐÂÔöµÄÊý¾ÝÀàÐÍ,
Ï£Íû¶ÔÄúµÄѧϰÓÐËù°ïÖú¡£
±¾ÎÄÀ´×ÔÓÚCSDN£¬ÓÉ»ðÁú¹ûÈí¼þAlice±à¼¡¢ÍƼö¡£ |
|
8051µÄCÓïÑÔ±à³ÌºÍ´«Í³µÄCÓïÑÔ±à³ÌÊÇÀàËÆµÄ¡£µ±È»ÆäÖÐÓÐЩÊý¾ÝÀàÐÍÊDz»Ò»ÑùµÄ£¬ÎÒÃÇÖªµÀ8051Ö§³ÖÇ¿´óµÄλѰַÄÜÁ¦£¬Òò´Ë8051µÄCÓïÑÔ±à³ÌÔö¼ÓÁËһЩеÄÊý¾ÝÀàÐÍ£¬ÎªÁ˲»Ê¹µÄ8051µÄÄÜÁ¦±»ÀË·Ñ¡£ÏÂÃæ¸ø³öÐÂÔöµÄÊý¾ÝÀàÐÍ¡£
bit ¡ª¡ªÓÃÓÚ¶¨Òå1¸öλ±äÁ¿£¬ÓÃÓÚ8051µÄλѰַ¿Õ¼ä(½ö½öÏÞÓÚÄÚ²¿RAMµÄ20H¡ª¡ª2FHµÄ×ֽڿռ䣨00H¡ª¡ª7FHµÄλµØÖ·¿Õ¼ä£©).£¨²»µÃ²»Ëµ8051µÄµØÖ·Öصþ¸ãµÃÈ˺ܷ³£©
ÀýÈ磺bit flag = 0; ¶¨ÒåflagΪһ¸öλ±äÁ¿£¬²¢ÇÒ³õʼ»¯Îª0.
sbit ¡ª¡ªÓÃÓÚ¶¨ÒåÒ»¸öλ±äÁ¿£¬ÓÃÓÚ8051µÄÌØÊ⹦ÄܼĴæÆ÷£¨ÄÚ²¿RAMµÄ80H¡ª¡ªFFHµÄ×ֽڿռ䣩
ÀýÈ磺sbit CY = 0xD7;
sbit P0_0 = 0x80^0;
ÉÏÃæµÄbitºÍsbitÊÇÁ½ÖÖ²»Í¬µÄÊý¾ÝÀàÐÍ£¬bitÊÇÓÃÓÚ¸øÄ³Ò»Î»µØÖ·¸³Öµ£¬¶øsbitÊÇÓÃÓÚ¸øÄ³Ò»¸öÌØÊ⹦ÄܼĴæÆ÷µÄijһλµÄλµØÖ·ÆðÃû×Ö¡£
sfr ¡ª¡ªÓÃÓÚ¶¨ÒåÒ»¸öÌØÊ⹦ÄܼĴæÆ÷±äÁ¿¡£
ÀýÈ磺sfr PSW = 0xD0;
µ±ÓÐÁËÉÏÃæµÄ¶¨ÒԺ󣬿ÉÒÔÕâÑùÀ´Ê¹ÓÃPSWµÄÿһ룬ÀýÈ磺PSW^0;±íʾPSWµÄµÚ0룬¼´ÆæÅ¼Ð£ÑéλP¡£
sfr16 ¡ª¡ªÓÃÓÚ¶¨Òå16λµÄÌØÊ⹦ÄܼĴæÆ÷±äÁ¿¡£
ÀýÈ磺sfr16 DPTR = 0x82;
ͨ¹ýÉÏÃæÒýÈëµÄÊý¾ÝÀàÐÍ£¬Ê¹µÃ8051µÄCÓïÑÔ±à³Ì±äµÃºÍÆÕͨµÄCÓïÑÔ±à³Ì»ù±¾Ò»Ö¡£Ò²³ä·ÖÀûÓÃÁË8051µÄÌØµã¡£
ÏÖÔÚ£¬ÎÒÃǵļ¯³É¿ª·¢»·¾³¶¼ºÜÈËÐÔ»¯£¬°Ñ8051µÄÌØÊ⹦ÄܼĴæÆ÷£¬¿ÉÎ»Ñ°Ö·ÌØÊ⹦ÄܼĴæÆ÷µÄ¿ØÖÆÎ»¶¼¶¨ÒåÔÚÒ»¸öÃûΪreg51.hµÄÍ·ÎļþÀïÃæ¡£ÏÂÃæÎÒÃǸø³ö¸ÃÍ·ÎļþµÄÄÚÈÝ¡£
REG51.H
Header file for generic 80C51 and 80C31 microcontroller.
Copyright (c) 1988-2002 Keil Elektronik GmbH and
Keil Software, Inc.
All rights reserved.
#ifndef __REG51_H__
#define __REG51_H__
/* BYTE Register */
sfr P0 = 0x80;
sfr P1 = 0x90;
sfr P2 = 0xA0;
sfr P3 = 0xB0;
sfr PSW = 0xD0;
sfr ACC = 0xE0;
sfr B = 0xF0;
sfr SP = 0x81;
sfr DPL = 0x82;
sfr DPH = 0x83;
sfr PCON = 0x87;
sfr TCON = 0x88;
sfr TMOD = 0x89;
sfr TL0 = 0x8A;
sfr TL1 = 0x8B;
sfr TH0 = 0x8C;
sfr TH1 = 0x8D;
sfr IE = 0xA8;
sfr IP = 0xB8;
sfr SCON = 0x98;
sfr SBUF = 0x99;
/* BIT Register */
/* PSW */
sbit CY = 0xD7;
sbit AC = 0xD6;
sbit F0 = 0xD5;
sbit RS1 = 0xD4;
sbit RS0 = 0xD3;
sbit OV = 0xD2;
sbit P = 0xD0;
/* TCON */
sbit TF1 = 0x8F;
sbit TR1 = 0x8E;
sbit TF0 = 0x8D;
sbit TR0 = 0x8C;
sbit IE1 = 0x8B;
sbit IT1 = 0x8A;
sbit IE0 = 0x89;
sbit IT0 = 0x88;
/* IE */
sbit EA = 0xAF;
sbit ES = 0xAC;
sbit ET1 = 0xAB;
sbit EX1 = 0xAA;
sbit ET0 = 0xA9;
sbit EX0 = 0xA8;
/* IP */
sbit PS = 0xBC;
sbit PT1 = 0xBB;
sbit PX1 = 0xBA;
sbit PT0 = 0xB9;
sbit PX0 = 0xB8;
/* P3 */
sbit RD = 0xB7;
sbit WR = 0xB6;
sbit T1 = 0xB5;
sbit T0 = 0xB4;
sbit INT1 = 0xB3;
sbit INT0 = 0xB2;
sbit TXD = 0xB1;
sbit RXD = 0xB0;
/* SCON */
sbit SM0 = 0x9F;
sbit SM1 = 0x9E;
sbit SM2 = 0x9D;
sbit REN = 0x9C;
sbit TB8 = 0x9B;
sbit RB8 = 0x9A;
sbit TI = 0x99;
sbit RI = 0x98;
#endif |
8051µ¥Æ¬»úÓжàÖØ´æ´¢·½Ê½£¬ÄÚ²¿RAM£¬ÄÚ²¿ROM£¬ÍⲿRAM£¬ÍⲿROM¡£ÓÐʱºòÎÒÃÇÏ£ÍûÖªµÀ¸Ã±äÁ¿ÔÚÄĶù¡£

ÉÏÃæÕâÕÅ±í¸ø³öÁ˱äÁ¿£¬º¯ÊýµÈ±»·ÅÔÚ8051µÄÄǸö´æ´¢Çø¡£
ÀýÈ磺char code str[] = "hello world!";¶¨ÒåÒ»¸öÊý×飬±»·ÅÔÚROMÖС£
µ±È»ÁË£¬ÉÏÃæµÄ¶¨Ò巽ʽ»áµ¼ÖÂÔÚ·ÃÎʵÄʱºòËÙ¶ÈÊDz»Ò»ÑùµÄ£¬±ÈÈçdata¾Í±ÈxdataÒª¿ì¡£Èç¹ûÊý¾ÝÊÇ·ÅÔÚÍⲿRAMµÄ£¬¿ÉÒÔ¿¼ÂÇʹÓÃxdata»òÕßÊÇpdata¡£
Èç¹ûÍü¼ÇÉùÃ÷´æ´¢ÔÚÄĶù£¬8051»áĬÈÏÊÇsmallµÄ´æ´¢Ä£Ê½¡£¸Ãģʽ½«ËùÓÐÊý¾Ý·ÅÔÚÄÚ²¿RAMÖС£ÏêϸÇ뿴ϱí

ÔÚ³ÌÐòÖпÉÒÔͨ¹ý#programÀ´Ñ¡ÔñÉèÖÃÄÄÒ»ÖÖģʽ¡£·ñÔòĬÈÏÊÇsmall¡£
×îºó£¬»¹ÊÇҪ̸µ½¹ØÓÚÖ¸ÕëµÄÎÊÌ⣬8051µÄCÓïÑÔ±à³Ìʵ¼ÊÉÏ»¹ÊǺÜÏñ»ã±àÓïÑԵģ¬ÐèÒªÎÒÃǶÔÄÚ´æÇøÓò½øÐÐÖ±½Ó²Ù×÷¡£
Ö¸ÕëÔÚCÓïÑÔÀï±¾À´¾ÍºÜÁé»î£¬ÔÚÕâÀïÎÒÃÇ»¹ÊÇÒª¿´¿´Ö¸ÕëµÄ´æ´¢ÀàÐÍ¡£
ÀýÈ磺 int *xdata numptr = # Ö¸ÕëÖ¸ÏòintÀàÐ͵ÄÊý¾Ý£¬µ«Ëü±¾ÉíÊÇÔÚÍⲿRAMÖд洢×Å¡£
int data *xdata numptr = # Ö¸ÕëÖ¸Ïò´æ´¢ÔÚÄÚ²¿RAMÖеÄintÀàÐÍÊý¾Ý£¬Ö¸Õë±¾ÉíÔÚÍⲿRAMÖС£
»¹ÓÐÒ»µãºÜÖØÒª£¬CÓïÑÔµÄÊý¾ÝÀàÐÍÔÚ8051ÖÐÕ¼¾ÝµÄ´óС¡£




ÒÔÉϵĽá¹û±íÃ÷£º
charÀàÐÍÔÚ8051ÖÐÕ¼¾ÝÁË1¸ö×Ö½Ú
intÀàÐÍÔÚ8051ÖÐÕ¼¾ÝÁË2¸ö×Ö½Ú
floatÀàÐÍÔÚ8051ÖÐÕ¼¾ÝÁË4¸ö×Ö½Ú
doubleÀàÐÍÔÚ8051ÖÐÕ¼¾ÝÁË4×Ö½Ú
Ö¸ÕëÊÇ×îÓÐÒâ˼µÄÒ»¸ö¡£´ÓÉÏÃæµÄ½á¹ûÀ´¿´£¬Èç¹ûûÓÐÖ¸¶¨Ö¸ÕëËùÖ¸ÏòµÄÊý¾Ý´æ´¢ÔÚÄÄ¿é¶ù£¬ÔòÖ¸ÕëÔÚ8051ÖÐÕ¼¾Ý3×Ö½Ú¡£ÆäÖеÚÒ»¸ö×Ö½Ú´æ´¢ÁËËüËù¶ÔÓ¦µÄÊý¾ÝµÄ´æ´¢ÀàÐÍ
Èç¹ûÖ¸Ã÷ÁËÔÚÄÚ²¿RAM£¬ÔòÕ¼¾ÝÒ»¸ö×Ö½Ú£¬ÔÚÍⲿRAMÔòÊÇÕ¼ÓÃ2¸ö×Ö½Ú¡£
䶨ÒåÊý¾Ý´æ´¢ÀàÐ͵ÄÖ¸Õë±äÁ¿µÚ1×Ö½ÚÖеÄÊý¾ÝºÍÊý¾Ý´æ´¢ÀàÐ͵ĶÔÓ¦¹ØÏµ

|