5-LED模擬交通燈單片機C語言程序設計實訓100例

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$ i" Z( p( N1 B/ E#include<reg51.h>
#define uchar unsigned char
7 w+ [( |( E6 \4 B$ i#define uint unsigned int
sbit RED_A=P0^0; //東西向燈
sbit YELLOW_A=P0^1;
sbit GREEN_A=P0^2;
9 z4 N/ Y: r4 D/ g& o' z, `sbit RED_B=P0^3; //南北向燈
sbit YELLOW_B=P0^4;
& p0 o+ h% G* c& X+ l! `sbit GREEN_B=P0^5;
: |, C* X! X; t6 t2 b: Wuchar Flash_Count=0,Operation_Type=1; //閃爍次數，操作類型變量  
$ t' w! g% V) o' k2 }5 b
0 h6 D8 b/ }& U0 f//延時
- Q6 I3 x( b& m4 Y# m* qvoid DelayMS(uint x)
/ C( s2 k7 M& g( ^  {" l: R+ c{
uchar i;
5 t) w/ B! [( D( xwhile(x--) for(i=0;i<120;i++);
}
//交通燈切換
; b8 l8 q7 G, o) Z! g% Lvoid Traffic_Light()
{
2 ]1 @2 s2 n1 V; t! Y) l6 Mswitch(Operation_Type)
{
. k- `- V: n" u" M3 i. ucase 1: //東西向綠燈與南北向紅燈亮
3 J3 E: ]8 T* W# ORED_A=1;YELLOW_A=1;GREEN_A=0;
RED_B=0;YELLOW_B=1;GREEN_B=1;
DelayMS(2000);
Operation_Type=2;
break;
case 2: //東西向黃燈閃爍，綠燈關閉
DelayMS(300);
YELLOW_A=~YELLOW_A;GREEN_A=1;
2 z, K* a3 l( g# N0 hif(++Flash_Count!=10) return; //閃爍 5 次
Flash_Count=0;
Operation_Type=3;
break;
) s: p- I4 M# t2 J1 ], ]case 3: //東西向紅燈，南北向綠燈亮
RED_A=0;YELLOW_A=1;GREEN_A=1;
& B6 N" V/ r. v# VRED_B=1;YELLOW_B=1;GREEN_B=0;
+ H6 F4 x" s& e5 q& _DelayMS(2000);
& _5 ?' ]& e9 ~  R- DOperation_Type=4;
! K& M( i" H( d9 m; Zbreak;
case 4: //南北向黃燈閃爍 5 次
$ ~, `8 B5 L. Y( N+ gDelayMS(300);
YELLOW_B=~YELLOW_B;GREEN_B=1;
if(++Flash_Count!=10) return;
' s% h$ G7 N) D9 mFlash_Count=0;
/ H- f1 y1 S, j0 ~! z6 _0 |0 FOperation_Type=1;
0 k( \- A/ ~; D( t) L/ `: T}
- Z. H; c; j* d& x9 g+ n2 [}
//主程序
+ K7 M3 j; q) p( ^7 `1 fvoid main()
+ U; i; e, `" X$ e& ?1 ?- {  z, @* X{
/ f! S" s& X) v2 m5 Q3 `+ `while(1) Traffic_Light();
. j2 r) f( g3 |9 E5 x4 ?3 E}  

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