单片机程序教学实例

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1、第五章实例一：INTO控制LEDC：汇编：#include#defineucharunsignedchar#defineuintunsignedintsbitLED=P0^0;voidmain(){LED=1;EA=1;EX0=1;TCON=0x01;while(1);}voidExternal_Interrupt_0()interrupt0{LED=~LED;}实例2：TIMER0控制LEDC：#include#defineucharunsignedchar#defin

2、euintunsignedintsbitLED=P0^0;ucharT_Count=0;voidmain(){TMOD=0x00;TH0=(8192-5000)/32;TL0=(8192-5000)%32;IE=0x82;TR0=1;while(1);}voidLED_Flash()interrupt1{TH0=(8192-5000)/32;TL0=(8192-5000)%32;if(++T_Count==100){LED=!LED;T_Count=0;}}实例3：串行数据转并行#include

3、.h>#include#defineuintunsignedint#defineucharunsignedcharvoidDelay(uintx){uchari;while(x--)for(i=0;i<120;i++);}voidmain(){ucharc=0x80;SCON=0x00;TI=1;while(1){c=_crol_(c,1);SBUF=c;while(TI==0);TI=0;Delay(400);}}实例4：并行数据转串行#include#includ

4、e#defineuintunsignedint#defineucharunsignedcharsbitSPL=P2^5;voidDelay(uintx){uchari;while(x--)for(i=0;i<120;i++);}voidmain(){SCON=0x10;while(1){SPL=0;SPL=1;while(RI==0);RI=0;P0=SBUF;Delay(20);}}实例5：甲机通过串口控制乙机甲：#include#defineuintunsigne

5、dint#defineucharunsignedcharsbitLED1=P0^0;sbitLED2=P0^3;sbitK1=P1^0;voidDelay(uintx){uchari;while(x--){for(i=0;i<120;i++);}}voidSend(ucharc){SBUF=c;while(TI==0);TI=0;}voidmain(){ucharOperation_NO=0;SCON=0x40;TMOD=0x20;PCON=0x00;TH1=0xf4;TL1=0xf4;TI=0;TR1=1

6、;while(1){if(K1==0){while(K1==0);Operation_NO=(Operation_NO+1)%4;}switch(Operation_NO){case0:LED1=LED2=1;break;case1:Send('A');LED1=~LED1;LED2=1;break;case2:Send('B');LED2=~LED2;LED1=1;break;case3:Send('C');LED1=~LED1;LED2=LED1;break;}Delay(100);}}乙：#inclu

7、de#defineuintunsignedint#defineucharunsignedcharsbitLED1=P0^0;sbitLED2=P0^3;voidDelay(uintx){uchari;while(x--){for(i=0;i<120;i++);}}voidmain(){SCON=0x50;TMOD=0x20;PCON=0x00;TH1=0xf4;TL1=0xf4;RI=0;TR1=1;LED1=LED2=1;while(1){if(RI){RI=0;switch(SBUF)

8、{case'A':LED1=~LED1;LED2=1;break;case'B':LED2=~LED2;LED1=1;break;case'C':LED1=~LED1;LED2=LED1;}}elseLED1=LED2=1;Delay(100);}}第六章74LS138译码器的使用开关控制LED实例1：继电器控制照明设备#include#defineucharunsignedchar#defin