Keil 锟侥革拷锟斤拷锟斤拷锟竭和诧拷锟捷高硷拷锟斤拷锟斤拷
锟斤拷前锟斤拷募锟斤拷锟斤拷锟斤拷锟斤拷墙锟斤拷锟斤拷斯锟斤拷痰慕锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷玫牡锟斤拷苑锟斤拷锟斤拷锟斤拷锟斤拷锟街拷猓琄eil 锟斤拷锟结供 锟斤拷一些锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷围锟接口★拷锟斤拷锟杰凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷源锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟矫凤拷锟斤拷锟饺ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟剿斤拷锟� 锟斤拷锟斤拷锟杰★拷锟斤拷锟揭筹拷锟斤拷锟叫碉拷锟斤拷锟截达拷锟襟，匡拷锟劫查看锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟较拷龋锟斤拷锟揭伙拷锟斤拷薪锟斤拷锟斤拷锟叫╋拷锟斤拷锟斤拷锟斤拷锟� 一锟斤拷锟杰ｏ拷锟斤拷锟解还锟斤拷锟斤拷锟斤拷 Keil 锟侥诧拷锟捷高硷拷锟斤拷锟皆硷拷锟缴★拷
一锟斤拷 锟斤拷锟斤拷锟斤拷锟斤拷
锟解部锟捷癸拷锟杰诧拷锟斤拷锟斤拷直锟斤拷锟斤拷锟斤拷锟斤拷锟叫筹拷锟斤拷锟斤拷缘模锟斤拷锟斤拷锟斤拷园锟斤拷锟斤拷锟斤拷墙锟斤拷谐锟斤拷锟侥碉拷锟皆★拷锟斤拷锟斤拷锟斤拷 锟杰的凤拷锟斤拷锟斤拷同锟斤拷锟斤拷一些锟斤拷锟斤拷锟矫的癸拷锟竭★拷
1锟斤拷锟斤拷围锟接匡拷
为锟斤拷锟杰癸拷锟饺斤拷直锟桔碉拷锟剿解单片锟斤拷锟叫讹拷时锟斤拷锟斤拷锟叫断★拷
锟斤拷锟叫端口★拷锟斤拷锟叫端口等筹拷锟斤拷锟斤拷锟斤拷锟绞癸拷锟斤拷锟斤拷锟斤拷Keil 锟斤拷 锟斤拷锟斤拷一些锟斤拷围锟接口对伙拷锟斤拷通锟斤拷 Peripherals 锟剿碉拷选锟斤拷 锟矫菜碉拷锟斤拷锟斤拷锟斤拷锟剿碉拷锟斤拷锟斤拷锟斤拷锟姐建锟斤拷锟斤拷目时锟斤拷选锟斤拷 CPU 锟叫关ｏ拷锟斤拷锟斤拷锟窖★拷锟斤拷 89C51 锟斤拷一锟洁“锟斤拷准锟斤拷锟斤拷 51 锟斤拷锟斤拷 锟斤拷么锟斤拷锟斤拷锟斤拷 Interrupt锟斤拷锟叫断ｏ拷锟斤拷I/O Ports锟斤拷锟斤拷锟斤拷 I/O 锟节ｏ拷锟斤拷 Serial锟斤拷锟斤拷锟叫口ｏ拷锟斤拷Timer锟斤拷锟斤拷时/锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥革拷锟斤拷围锟斤拷
图 1 锟斤拷围锟借备之锟斤拷锟叫端匡拷
锟斤拷锟剿碉拷锟斤拷锟斤拷锟斤拷些锟皆伙拷锟斤拷锟叫筹拷锟斤拷锟斤拷围锟借备锟侥碉拷前使锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街疚伙拷锟斤拷锟斤拷锟饺ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷 些锟皆伙拷锟斤拷锟斤拷直锟桔地观诧拷透锟斤拷母锟斤拷锟轿э拷璞革拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
锟斤拷锟斤拷锟斤拷锟斤拷通锟斤拷一锟斤拷锟斤拷锟斤拷锟接匡拷一锟斤拷锟斤拷锟叫端口碉拷锟斤拷围锟借备锟皆伙拷锟斤拷锟绞癸拷谩锟斤拷锟� 4锟斤拷
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MOV |
A,#0FEH |
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LOOP: |
MOV |
P1,A |
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RL |
A |
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CALL |
DELAY ;锟斤拷时 100 锟斤拷锟斤拷 |
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JMP |
LOOP |
锟斤拷锟斤拷锟斤拷时 100 锟斤拷锟斤拷锟斤拷映锟斤拷锟斤拷锟斤拷锟斤拷斜锟叫达拷锟�
锟斤拷 锟斤拷 锟斤拷 锟斤拷 锟斤拷 锟斤拷 锟斤拷 锟斤拷 锟斤拷 锟斤拷 锟斤拷 锟斤拷 锟斤拷 Peripherals->I/O-Ports->Port 1 锟津开ｏ拷锟斤拷图 1 锟斤拷示锟斤拷全锟斤拷锟斤拷 锟叫ｏ拷锟斤拷锟皆匡拷锟斤拷锟斤拷锟斤拷锟斤拷位锟侥癸拷锟节诧拷锟较变化锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷浠拷锟� 锟斤拷锟斤拷 View->Periodic Window Updata锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟� 锟斤拷锟斤拷锟斤拷锟斤拷执锟叫的斤拷锟斤拷锟�
注锟斤拷锟斤拷锟斤拷憧达拷锟斤拷谋浠拷锟斤拷欤拷锟斤拷锟斤拷锟斤拷锟教拷锟斤拷锟斤拷锟斤拷么 说锟斤拷锟斤拷募锟斤拷锟斤拷锟斤拷锟杰好ｏ拷模锟斤拷执锟叫碉拷锟劫度快，锟斤拷锟斤拷锟斤拷锟斤拷锟� 锟斤拷锟接筹拷锟斤拷时锟斤拷锟斤拷锟绞憋拷锟斤拷苑锟斤拷锟斤拷俣取锟侥ｏ拷锟斤拷锟斤拷锟斤拷俣锟斤拷锟绞碉拷锟� 锟斤拷锟叫碉拷锟劫讹拷锟睫凤拷锟斤拷同锟斤拷锟斤拷锟斤拷模锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷恪�
锟斤拷锟� Peripherals->I/O-Ports->Timer0 锟斤拷锟斤拷锟斤拷图 2 锟斤拷示 锟斤拷时/锟斤拷锟斤拷锟斤拷 0 锟斤拷锟斤拷围锟接口斤拷锟芥，锟斤拷锟斤拷直锟斤拷选锟斤拷 Mode 锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷锟叫憋拷锟斤拷确锟斤拷锟斤拷时/锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷式锟斤拷0-3 锟斤拷锟街癸拷锟斤拷锟斤拷式锟斤拷
图 2 锟斤拷围锟借备之锟斤拷时锟斤拷
锟借定锟斤拷时锟斤拷值锟饺ｏ拷锟斤拷锟窖★拷锟� TR0锟斤拷status 锟斤拷锟� stop 锟酵憋拷锟斤拷锟� run锟斤拷锟斤拷锟饺拷锟斤拷锟斤拷谐锟斤拷颍锟绞�
th0,tl0 锟斤拷锟街狄诧拷锟斤拷俚乜锟绞硷拷浠拷锟酵拷锟揭拷锟� Periodic Window Updata 锟斤拷锟斤拷选锟斤拷状态锟斤拷锟斤拷直锟桔碉拷 锟斤拷示锟剿讹拷时/锟斤拷锟斤拷锟斤拷锟侥癸拷锟斤拷锟斤拷锟斤拷锟斤拷锟饺伙拷锟斤拷锟斤拷锟斤拷锟侥筹拷锟斤拷未锟皆达拷写锟轿何达拷锟诫，锟斤拷锟皆筹拷锟津不伙拷锟� 锟剿讹拷时/锟斤拷锟斤拷锟斤拷锟侥癸拷锟斤拷锟斤拷锟叫达拷锟斤拷锟斤拷锟斤拷
2锟斤拷锟斤拷锟杰凤拷锟斤拷
Keil 锟结供锟斤拷一锟斤拷锟斤拷锟杰凤拷锟斤拷锟斤拷锟竭ｏ拷锟斤拷锟矫该癸拷锟竭ｏ拷锟斤拷锟角匡拷锟斤拷锟剿斤拷锟斤拷锟斤拷锟斤拷锟叫╋拷锟斤拷莸锟街达拷锟绞憋拷锟� 锟筋长锟斤拷锟斤拷锟矫达拷锟斤拷锟斤拷啵拷佣锟斤拷私锟接帮拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街达拷锟斤拷俣鹊锟狡匡拷锟斤拷锟斤拷锟斤拷锟酵拷锟揭伙拷锟绞碉拷锟斤拷锟斤拷锟揭� 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷使锟矫ｏ拷锟斤拷 5锟斤拷
#include "reg51.h"
sbit P1_0=P1^0; //锟斤拷锟斤拷 P1.0
void mDelay(unsigned char DelayTime)
{ unsigned int j=0;
for(;DelayTime>0;DelayTime--)
{ for(j=0;j<125;j++) {;} }
}
void mDelay1(unsigned char DelayTime)
{ unsigned int j=0;
for(;DelayTime>0;DelayTime--)
{ for(j=0;j<125;j++) {;} }
}
void main()
{ unsigned int i;
for(;;){ mDelay(10); // 锟斤拷时 10
锟斤拷锟斤拷
i++;
if(i==10)
{ P1_0=!P1_0; i=0; mDelay1(10);}
} }
锟斤拷锟斤拷锟斤拷锟接★拷锟斤拷锟斤拷锟斤拷锟阶刺拷锟绞癸拷貌说锟� View->Performance Analyzer Window锟斤拷锟斤拷锟斤拷锟杰凤拷 锟斤拷锟皆伙拷锟津，斤拷锟斤拷枚曰锟斤拷锟斤拷只锟斤拷一锟斤拷 unspecified锟斤拷锟斤拷锟斤拷锟斤拷壹锟斤拷锟斤拷诳锟捷菜碉拷锟斤拷选锟斤拷 Setup PA 锟斤拷锟斤拷锟斤拷锟杰凤拷锟斤拷锟斤拷锟矫对伙拷锟津，讹拷锟斤拷 C 锟斤拷锟皆筹拷锟津，该对伙拷锟斤拷锟揭诧拷摹锟紽unction Symbol锟斤拷锟铰碉拷 锟叫憋拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷牛锟剿拷锟侥骋伙拷锟斤拷牛锟斤拷梅锟斤拷偶锟斤拷锟斤拷锟斤拷锟� Define Performance Analyzer 锟铰的憋拷 锟斤拷锟斤拷锟叫ｏ拷每锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟街ｏ拷锟斤拷锟� Define 锟斤拷钮锟斤拷锟斤拷锟斤拷锟矫猴拷锟斤拷锟斤拷锟斤拷锟斤拷锟较的凤拷锟斤拷锟叫憋拷锟津。讹拷 锟节伙拷锟斤拷锟斤拷锟皆达拷锟斤拷锟紽unction Symbol 锟铰碉拷锟叫憋拷锟斤拷锟叫诧拷锟斤拷锟斤拷锟斤拷映锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街憋拷锟斤拷诒嗉╋拷锟� 锟斤拷锟斤拷锟斤拷锟接筹拷锟斤拷锟斤拷锟斤拷锟斤拷锟� Close 锟截闭达拷锟节ｏ拷锟截碉拷锟斤拷锟杰凤拷锟斤拷锟斤拷锟节ｏ拷锟斤拷时锟斤拷锟节癸拷锟斤拷 4 锟斤拷选锟筋。全锟斤拷 执锟叫筹拷锟津，匡拷锟皆匡拷锟斤拷 mDelay 锟斤拷 mDelay1 锟斤拷锟斤拷锟揭伙拷锟斤拷锟缴甘撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷谋锟竭匡拷锟斤拷直锟斤拷 锟截匡拷锟斤拷每锟斤拷锟斤拷锟斤拷占锟斤拷锟斤拷执锟斤拷时锟斤拷谋锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷应锟侥猴拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟节该达拷锟节碉拷状态锟斤拷锟斤拷锟斤拷锟斤拷 锟斤拷细锟斤拷锟斤拷锟捷ｏ拷锟斤拷锟叫革拷锟斤拷暮锟斤拷锟斤拷锟斤拷拢锟�
Min锟斤拷锟矫段筹拷锟斤拷执锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷时锟戒；Max锟斤拷锟矫段筹拷锟斤拷执锟斤拷锟斤拷锟斤拷锟斤拷畛な憋拷洌籄vg锟斤拷锟斤拷 锟轿筹拷锟斤拷执锟斤拷锟斤拷锟斤拷平锟斤拷时锟戒；Total锟斤拷锟矫段筹拷锟斤拷目前为目锟杰癸拷执锟叫碉拷时锟戒；%锟斤拷占锟斤拷锟斤拷执锟斤拷时 锟斤拷陌俜直龋锟絚ount锟斤拷锟斤拷锟斤拷锟矫的达拷锟斤拷锟斤拷
锟斤拷锟斤拷锟斤拷锟叫ｏ拷锟斤拷锟斤拷 mDelay 锟斤拷 mDelay1 每锟轿憋拷锟斤拷锟矫讹拷锟斤拷锟斤拷同锟斤拷锟斤拷时锟戒，锟斤拷锟斤拷锟斤拷 Min锟斤拷Max锟斤拷
锟斤拷 Avg 锟斤拷锟斤拷锟藉，实锟斤拷锟较ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥变化锟斤拷某些锟斤拷锟斤拷执锟叫碉拷时锟戒不一锟斤拷锟斤拷一锟斤拷锟教讹拷锟斤拷值锟斤拷 锟斤拷锟斤拷锟斤拷锟斤拷些锟斤拷息锟斤拷锟斤拷锟皆对筹拷锟斤拷锟叫革拷锟斤拷细锟斤拷锟剿解。锟斤拷锟芥将 mDelay1 锟斤拷锟斤拷锟斤拷锟斤拷锟睫革拷锟斤拷一锟斤拷示锟斤拷
void mDelay1(unsigned char DelayTime)
{ static unsigned char k;
unsigned int j=0;
for(;DelayTime>0;DelayTime--)
{ for(;j<k;j++)
{;}
} k++; }
锟斤拷锟斤拷锟叫讹拷锟斤拷锟斤拷一锟斤拷锟斤拷态锟斤拷锟斤拷 K锟斤拷每锟轿碉拷锟矫该憋拷锟斤拷锟斤拷 1锟斤拷锟斤拷 j 锟斤拷循锟斤拷锟斤拷锟斤拷锟斤拷 k 锟侥达拷小锟叫关ｏ拷
锟斤拷使每锟斤拷执锟叫该筹拷锟斤拷锟斤拷锟斤拷锟斤拷时锟戒不一锟斤拷锟斤拷锟斤拷锟诫、执锟叫该筹拷锟斤拷锟劫次观诧拷锟斤拷锟杰凤拷锟斤拷锟斤拷锟节ｏ拷锟斤拷锟斤拷
锟斤拷锟斤拷 Min锟斤拷Max锟斤拷Avg 锟斤拷锟斤拷锟藉。
3锟斤拷锟斤拷锟斤拷锟斤拷源锟斤拷锟�
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锟斤拷锟斤拷锟节空间）锟斤拷Use锟斤拷锟斤拷锟矫达拷锟斤拷锟斤拷锟斤拷锟津，碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷诖锟斤拷诘锟斤拷也嗫达拷锟斤拷帽锟斤拷锟斤拷锟斤拷母锟� 锟斤拷细锟斤拷锟斤拷息锟斤拷
4锟斤拷锟斤拷锟斤拷锟斤拷锟矫凤拷围锟斤拷锟斤拷
锟斤拷锟斤拷写锟侥筹拷锟斤拷锟叫ｏ拷锟斤拷些锟斤拷锟斤拷锟斤拷锟斤拷锟皆讹拷锟斤拷岜恢达拷械锟斤拷锟斤拷锟斤拷锟斤拷锟叫э拷拇锟斤拷耄╋拷锟揭诧拷锟揭恍╋拷锟斤拷锟� 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷鼙锟街达拷械锟斤拷锟斤拷锟斤拷锟斤拷诖锟斤拷敕段э拷锟斤拷锟斤拷锟斤拷撸锟斤拷锟斤拷钥锟斤拷俚锟斤拷私锟斤拷锟斤拷锟街� 锟斤拷锟斤拷锟斤拷锟�
锟斤拷锟斤拷锟斤拷院锟饺拷锟斤拷锟斤拷校锟饺伙拷锟酵Ｖ癸拷锟脚ワ拷锟酵ｏ拷锟斤拷锟斤拷螅锟斤拷钥锟斤拷锟斤拷锟皆达拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 锟斤拷色锟斤拷锟揭★拷锟斤拷锟揭猴拷锟教ｏ拷锟斤拷锟叫碉拷锟斤拷锟斤拷指锟斤拷锟叫诧拷锟斤拷锟角匡拷执锟叫达拷锟诫，锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷濉⒆拷锟斤拷械锟� 锟饺ｏ拷锟斤拷锟斤拷色锟斤拷锟角匡拷执锟叫碉拷锟斤拷未执锟叫癸拷锟侥达拷锟诫，锟斤拷锟斤拷色锟斤拷锟斤拷锟斤拷执锟叫癸拷锟侥筹拷锟斤拷锟叫★拷使锟矫碉拷锟皆癸拷锟斤拷 锟斤拷锟较碉拷 Code Coverage Window 锟缴打开达拷锟斤拷锟斤拷锟矫凤拷围锟斤拷锟斤拷锟侥对伙拷锟斤拷锟斤拷锟斤拷锟叫革拷锟斤拷模锟斤拷锟斤拷锟街� 锟斤拷锟斤拷锟斤拷母锟斤拷锟较革拷姆锟斤拷锟斤拷锟斤拷锟斤拷锟姐发锟斤拷全锟斤拷锟斤拷锟叫猴拷锟斤拷一些未锟斤拷执锟叫碉拷锟侥达拷锟诫，锟斤拷么锟斤拷要锟斤拷细锟斤拷 锟斤拷锟斤拷锟斤拷些锟斤拷锟诫究锟斤拷锟斤拷锟斤拷效锟侥达拷锟诫还锟斤拷锟斤拷为锟斤拷锟斤拷没锟斤拷锟斤拷锟斤拷锟矫伙拷斜锟街达拷械锟斤拷锟�
锟斤拷锟斤拷锟斤拷锟捷高硷拷锟斤拷锟皆硷拷锟斤拷
Keil 锟斤拷锟斤拷锟斤拷一锟阶碉拷锟斤拷锟斤拷锟皆ｏ拷锟杰讹拷呒锟斤拷锟斤拷约锟斤拷锟斤拷锟斤拷锟叫关ｏ拷锟斤拷锟斤拷全锟斤拷学习锟斤拷锟斤拷锟斤拷锟皆诧拷锟斤拷锟斤拷 实锟斤拷锟解不锟斤拷锟斤拷么锟斤拷锟斤拷锟斤拷锟截匡拷锟斤拷胜锟轿的ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷懿锟斤拷萁锟轿碉拷玫墓锟斤拷埽锟斤拷锟揭拷锟矫革拷锟斤拷细锟斤拷 锟斤拷息锟斤拷锟斤拷慰锟� Keil 锟皆达拷锟侥帮拷锟斤拷锟侥硷拷 GS51.PDF锟斤拷
1锟斤拷锟斤拷锟叫达拷锟斤拷锟斤拷实锟斤拷硬锟斤拷锟斤拷锟斤拷
Keil 锟侥达拷锟叫达拷锟节筹拷锟斤拷锟斤拷模锟解串锟叫口碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟解还锟斤拷锟斤拷锟斤拷 PC 锟斤拷锟斤拷实锟绞的达拷锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷锟杰达拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷荩锟斤拷锟斤拷锟斤拷锟斤拷锟酵碉拷锟斤拷锟节★拷锟斤拷锟斤拷要锟斤拷 Keil 锟叫斤拷锟斤拷锟斤拷锟矫★拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷诘锟� Command 页锟斤拷 MODE 锟斤拷锟斤拷锟斤拷锟矫达拷锟节的癸拷锟斤拷锟斤拷式锟斤拷然锟斤拷锟斤拷 ASSIGN 锟斤拷锟筋将锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷实锟绞的达拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟酵拷锟揭伙拷锟绞碉拷锟斤拷锟剿碉拷锟斤拷锟轿诧拷锟斤拷锟斤拷锟斤拷 6锟斤拷
ORG 0000H JMP START
ORG 3+4*8 ;锟斤拷锟斤拷锟叫讹拷锟斤拷锟�
JMP SER_INT START:
MOV SP,#5FH ;锟斤拷栈锟斤拷始锟斤拷
CALL SER_INIT ;锟斤拷锟叫口筹拷始锟斤拷 A SETB EA ;
SETB ES ;
JMP $ ;锟斤拷锟斤拷锟津到此斤拷锟斤拷
SER_INT:
JBC RI,NEXT ; 锟斤拷锟斤拷锟斤拷诮锟斤拷盏锟斤拷锟� 锟斤拷锟斤拷转
JMP SEND ;锟斤拷锟斤拷转锟斤拷锟酵达拷锟斤拷
NEXT:
MOV A,SBUF ;锟斤拷 SBUF 锟斤拷取锟街凤拷
MOV SBUF,A ;锟斤拷锟酵碉拷锟斤拷锟斤拷 SBUF 锟斤拷
JMP OVER SEND:
clr ti
OVER:
reti
SER_INIT: ;锟叫断筹拷始锟斤拷
MOV SCON,#50H
ORL TMOD,#20H
ORL PCON,#80H
MOV TH1,#0FDH ;锟借定锟斤拷锟斤拷锟斤拷 SETB TR1 ;锟斤拷时锟斤拷 1 锟斤拷始锟斤拷锟斤拷 SETB REN ;锟斤拷锟斤拷锟斤拷锟斤拷
SETB SM2
RET END
锟斤拷锟斤拷锟斤拷锟绞癸拷锟斤拷锟斤拷卸戏锟绞斤拷锟叫达拷锟斤拷锌锟斤拷锟斤拷锟�/锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷墓锟斤拷锟斤拷墙锟斤拷哟锟斤拷锌锟斤拷盏锟斤拷锟斤拷锟� 锟斤拷锟斤拷锟酵ｏ拷锟斤拷锟斤拷通锟斤拷锟斤拷锟叫口凤拷锟酵筹拷去锟斤拷
锟斤拷确锟斤拷锟斤拷源锟侥硷拷锟斤拷锟斤拷锟斤拷锟斤拷锟教★拷锟斤拷锟斤拷锟斤拷锟斤拷没锟叫达拷锟襟，可斤拷锟叫碉拷锟皆ｏ拷使锟斤拷 Keil 锟皆达拷锟侥达拷锟斤拷 锟斤拷锟节诧拷锟皆癸拷锟斤拷锟角凤拷锟斤拷确锟斤拷锟斤拷锟斤拷锟饺凤拷锟斤拷锟斤拷越锟斤拷锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷椤�
为锟斤拷实锟矫ｏ拷锟斤拷锟角诧拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷硬锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 PC 锟斤拷锟较碉拷锟斤拷锟斤拷锟斤拷锟节伙拷锟斤拷锟斤拷锟捷ｏ拷锟斤拷 COM1 锟斤拷锟斤拷 COM2 锟斤拷锟秸ｏ拷锟斤拷 COM2 锟斤拷锟斤拷锟斤拷锟斤拷 COM1 锟斤拷锟秸ｏ拷为锟剿ｏ拷锟斤拷要锟斤拷一锟斤拷锟斤拷锟斤拷锟竭斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟杰简单ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟皆诧拷锟斤拷 PC 锟斤拷锟斤拷锟节碉拷 DIN9 锟斤拷锟斤拷锟斤拷母锟斤拷锟斤拷然锟斤拷锟斤拷一锟斤拷 3 芯锟竭斤拷 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟竭的凤拷锟斤拷锟角ｏ拷
2锟斤拷锟斤拷3
3锟斤拷锟斤拷2
5锟斤拷锟斤拷5
锟接猴拷锟竭帮拷锟斤拷锟斤拷锟斤拷头锟街憋拷锟斤拷锟� PC 锟斤拷锟较的达拷锟斤拷 1 锟诫串锟斤拷 2锟斤拷锟斤拷一锟斤拷 PC 锟斤拷锟较的达拷锟斤拷锟秸端碉拷 锟斤拷锟斤拷锟斤拷锟斤拷锟界串锟节撅拷锟斤拷之锟洁，锟斤拷锟叫革拷锟斤拷锟斤拷锟斤拷锟斤拷锟矫好达拷锟节诧拷锟斤拷锟斤拷锟斤拷锟叫达拷锟斤拷选锟斤拷 2锟斤拷锟斤拷锟节诧拷锟斤拷锟斤拷锟斤拷 为锟斤拷
19200锟斤拷n锟斤拷8锟斤拷1 锟戒含锟斤拷锟角诧拷锟斤拷锟斤拷为 19200锟斤拷锟斤拷锟斤拷偶校锟介，8 位锟斤拷锟捷ｏ拷1 位停止位锟斤拷 锟斤拷 Keil 锟斤拷锟皆达拷锟节碉拷 command 页锟斤拷锟斤拷锟诫：
>mode com1 19200,0,8,1
>assign com1 <sin>sout
注锟斤拷锟斤拷锟斤拷锟斤拷前锟斤拷摹锟�>锟斤拷锟斤拷锟斤拷示锟斤拷锟斤拷锟斤拷要锟斤拷锟诫，锟节讹拷锟斤拷锟叫的★拷<锟斤拷锟酵★拷>锟斤拷锟斤拷锟斤拷小锟节★拷锟斤拷 锟斤拷锟斤拷锟节★拷锟斤拷锟脚ｏ拷锟叫硷拷锟斤拷锟斤拷锟侥革拷锟絪锟斤拷锟酵★拷input锟斤拷锟斤拷前锟斤拷锟斤拷锟斤拷母锟斤拷锟斤拷锟斤拷锟斤拷锟侥革拷锟絪锟斤拷锟酵★拷output锟斤拷 锟斤拷前锟斤拷锟斤拷锟斤拷母锟斤拷
锟斤拷一锟斤拷锟斤拷锟筋定锟藉串锟斤拷 1 锟侥诧拷锟斤拷锟斤拷为 19200锟斤拷锟斤拷锟斤拷偶校锟介，8 位锟斤拷锟捷ｏ拷1 位停止位锟斤拷锟节讹拷 锟斤拷锟角斤拷锟斤拷锟斤拷 1锟斤拷com1锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷写锟斤拷凇锟�
全锟斤拷锟斤拷锟叫筹拷锟斤拷然锟斤拷锟叫伙拷锟斤拷锟节撅拷锟介，锟斤拷始锟斤拷锟酵ｏ拷锟结看锟斤拷锟斤拷锟酵猴拷锟斤拷锟斤拷莼锟斤拷锟斤拷锟斤拷锟斤拷缘锟斤拷锟斤拷锟� 锟叫ｏ拷说锟斤拷锟窖斤拷锟秸碉拷锟剿凤拷锟酵癸拷锟斤拷锟斤拷锟斤拷锟捷★拷锟叫伙拷锟斤拷 uVison锟斤拷锟介看锟斤拷锟叫达拷锟斤拷 1锟斤拷锟结看锟斤拷锟斤拷锟斤拷锟饺凤拷锟� 锟秸碉拷锟剿达拷锟节撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟捷★拷
2锟斤拷锟接端匡拷锟斤拷锟斤拷锟脚猴拷
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷锟脚猴拷锟斤拷锟诫，锟斤拷锟斤拷锟斤拷锟捷采硷拷锟斤拷锟斤拷锟斤拷锟揭拷锟斤拷锟斤拷锟斤拷锟斤拷锟捷ｏ拷锟斤拷锟斤拷 Keil 锟侥碉拷锟斤拷锟斤拷全锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟皆癸拷锟竭ｏ拷没锟斤拷硬锟斤拷锟斤拷之锟斤拷锟斤拷锟斤拷锟斤拷锟皆诧拷锟斤拷锟斤拷直锟接伙拷锟斤拷锟斤拷荩锟轿拷锟� 锟斤拷锟斤拷锟斤拷锟揭恍╋拷锟斤拷锟侥凤拷锟斤拷锟斤拷锟斤拷锟界，某锟斤拷路锟斤拷 P1 锟斤拷锟斤拷为锟斤拷锟捷采硷拷锟节ｏ拷锟斤拷么锟斤拷锟斤拷使锟矫碉拷一锟街凤拷 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷围锟接口ｏ拷锟斤拷 PORT 1锟斤拷锟斤拷锟斤拷锟斤拷诘锟斤拷锟斤拷应锟剿匡拷位锟斤拷使锟斤拷锟轿拷叩锟狡斤拷锟酵碉拷平锟斤拷 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟捷★拷锟斤拷然锟斤拷锟斤拷锟街凤拷锟斤拷锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷锟捷讹拷锟斤拷锟斤拷锟斤拷位锟斤拷锟斤拷锟斤拷说太锟介烦锟剿ｏ拷锟斤拷一锟街凤拷 锟斤拷锟斤拷直锟斤拷锟斤拷 command 页锟斤拷锟斤拷 port1=锟斤拷值锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷小小锟斤拷锟斤拷证锟斤拷锟斤拷锟斤拷 7锟斤拷
LOOP: MOV A,P1
JZ NEXT
MOV R0,#55H JMP LOOP
NEXT: MOV R0,#0AAH JMP LOOP
END
锟矫筹拷锟斤拷锟� P1 锟节伙拷锟斤拷锟斤拷荩锟斤拷锟斤拷 P1 锟节碉拷值锟斤拷 0锟斤拷锟斤拷么锟斤拷锟斤拷 R0 锟斤拷值为 0AAH锟斤拷锟斤拷锟斤拷锟斤拷 R0 锟斤拷值为 55H锟斤拷锟斤拷锟斤拷源锟斤拷锟津并斤拷锟斤拷锟斤拷锟教ｏ拷锟斤拷锟斤拷锟斤拷院锟斤拷诠鄄齑帮拷诩锟斤拷锟� R0锟斤拷然锟斤拷全锟斤拷锟斤拷锟叫筹拷 锟斤拷注锟斤拷确锟斤拷 View->Periodic Window Updata 锟斤拷锟斤拷选锟斤拷状态锟斤拷然锟斤拷锟斤拷 Command 锟斤拷锟斤拷锟斤拷 PORT1=0 锟截筹拷锟斤拷锟斤拷苑锟斤拷止鄄齑帮拷锟斤拷械锟� R0 锟斤拷值锟斤拷锟斤拷锟� 0AAH锟斤拷然锟斤拷锟斤拷锟斤拷锟斤拷 PORT1=1 锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷值锟斤拷锟斤拷 R0 锟斤拷值锟斤拷锟轿� 55H锟斤拷
同锟斤拷锟侥碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 port0锟斤拷port2锟斤拷port3 锟街憋拷锟斤拷丝锟� 0锟斤拷2锟斤拷3 锟斤拷锟斤拷锟脚号★拷
3锟斤拷直锟接革拷锟斤拷锟节达拷值
锟节筹拷锟斤拷锟斤拷锟斤拷锟叫ｏ拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟捷的凤拷锟斤拷锟斤拷直锟接革拷锟斤拷锟斤拷应锟斤拷锟节存单元锟斤拷值锟斤拷锟斤拷锟界，某锟斤拷锟斤拷 锟缴硷拷锟斤拷锟斤拷使锟斤拷 30H 锟斤拷 31H 锟斤拷为锟芥储锟斤拷元锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟皆拷锟斤拷妫拷锟矫达拷锟斤拷歉锟斤拷锟�
锟斤拷 30H 锟斤拷 31H 锟斤拷元锟斤拷值锟斤拷锟洁当锟斤拷锟斤拷锟斤拷锟斤拷莶杉锟斤拷锟斤拷锟缴硷拷锟斤拷锟斤拷锟斤拷锟捷ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷诖娲帮拷锟斤拷锟街� 锟斤拷锟睫改ｏ拷锟轿匡拷锟斤拷一锟斤拷锟斤拷锟斤拷也锟斤拷锟斤拷通锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷薷模锟斤拷锟斤拷锟斤拷锟斤拷式锟角ｏ拷 _WBYTE (锟斤拷址,锟斤拷锟斤拷)锟斤拷
锟斤拷锟叫碉拷 址锟斤拷 指锟斤拷写 锟斤拷锟斤拷 锟芥单元 锟侥碉拷 址锟斤拷锟斤拷 锟斤拷锟斤拷 锟斤拷锟角达拷 写锟斤拷 锟矫碉拷址 锟斤拷锟斤拷 锟捷★拷锟斤拷 锟斤拷
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