5-LED模擬交通燈單片機(jī)C語(yǔ)言程序設(shè)計(jì)實(shí)訓(xùn)100例

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  `2 {& R2 C  u0 W- N5 e3 u#include<reg51.h>
#define uchar unsigned char
  G; F0 f# n, m/ @#define uint unsigned int
sbit RED_A=P0^0; //東西向燈
' Y. M; \% f( R) u+ |/ Psbit YELLOW_A=P0^1;
sbit GREEN_A=P0^2;
sbit RED_B=P0^3; //南北向燈
* s; r/ q2 S& J; C3 C& `sbit YELLOW_B=P0^4;
sbit GREEN_B=P0^5;
3 M; @- q5 I4 D$ a5 x1 Guchar Flash_Count=0,Operation_Type=1; //閃爍次數(shù)，操作類(lèi)型變量  
  Y" C7 @; ?. y% B- d
  y" Y1 v# I3 \6 N/ s//延時(shí)
void DelayMS(uint x)
{
uchar i;
+ W0 M. c+ a' N# Vwhile(x--) for(i=0;i<120;i++);
}
//交通燈切換
. b1 U( J  A' ^; Jvoid Traffic_Light()
{
switch(Operation_Type)
{
* i+ o* C: j1 L" I/ hcase 1: //東西向綠燈與南北向紅燈亮
* y6 P: o1 E% a7 t* HRED_A=1;YELLOW_A=1;GREEN_A=0;
( m+ j" p4 J  ^: B- aRED_B=0;YELLOW_B=1;GREEN_B=1;
1 |- F' e! e9 }: o' y3 oDelayMS(2000);
Operation_Type=2;
break;
* u6 [1 Z3 C/ l9 Ucase 2: //東西向黃燈閃爍,，綠燈關(guān)閉
5 ~! o; U& z9 k" {7 CDelayMS(300);
% \  a8 y& c4 d" U0 mYELLOW_A=~YELLOW_A;GREEN_A=1;
) h7 ~6 H$ S- t, T! J) C1 R, \" a7 u0 Iif(++Flash_Count!=10) return; //閃爍 5 次
Flash_Count=0;
0 n4 z# U( x* h' K  {) U' dOperation_Type=3;
& p; \5 j9 a6 s5 qbreak;
case 3: //東西向紅燈,，南北向綠燈亮
' c5 S/ J- ^& bRED_A=0;YELLOW_A=1;GREEN_A=1;
RED_B=1;YELLOW_B=1;GREEN_B=0;
DelayMS(2000);
Operation_Type=4;
; B) f4 i) s+ M$ m4 b/ zbreak;
6 o6 J# D& [' _+ x# g* D. Icase 4: //南北向黃燈閃爍 5 次
DelayMS(300);
YELLOW_B=~YELLOW_B;GREEN_B=1;
. m2 E8 j0 }% H% \6 Sif(++Flash_Count!=10) return;
Flash_Count=0;
, `! F: h' v# {) z8 `* c4 wOperation_Type=1;
}
; B. z- e1 |) x+ [$ T! G( P}
! }4 d! x! h/ s+ I+ Y' a' e& J//主程序
void main()
* s( Q2 U7 U& g. y, T: b5 K' e$ V{
while(1) Traffic_Light();
}  
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+ T+ V* W7 n% V' x8 Q

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