5-LED模擬交通燈單片機C語言程序設計實訓100例

2369353531

#include<reg51.h>
#define uchar unsigned char
% R6 O/ `" k3 e- Y0 B#define uint unsigned int
sbit RED_A=P0^0; //東西向燈
: l* g/ ?$ |1 k( E( N) S, {1 Csbit YELLOW_A=P0^1;
  b3 B( d' z! a  Y+ _$ Qsbit GREEN_A=P0^2;
% T8 j8 x( f( q. U5 \# l9 z0 b3 ssbit RED_B=P0^3; //南北向燈
sbit YELLOW_B=P0^4;
% z) d/ e7 e* ]; c* |! |+ R' Zsbit GREEN_B=P0^5;
. E( |. Q1 S- J- P3 u7 nuchar Flash_Count=0,Operation_Type=1; //閃爍次數，操作類型變量  

" c1 \3 ~, u/ }  x7 _//延時
7 D+ |8 R. s0 H# c( G' l, b/ nvoid DelayMS(uint x)
' k4 H  a$ @+ G1 Z{
: c% z! `! c) H; C. m" g/ M- Fuchar i;
! H; v% n2 \/ J1 S( p. Dwhile(x--) for(i=0;i<120;i++);
# O# Z$ b8 U0 ]$ Z}
' R, y: G' I4 B, ^) `4 B" N//交通燈切換
" M) o9 q! V, r1 o& Vvoid Traffic_Light()
# x4 ^1 P. i' L" L+ A{
switch(Operation_Type)
' x, Z# h- A1 w' e' b5 [{
case 1: //東西向綠燈與南北向紅燈亮
( d2 M; k9 r* x; ]& J' Z8 ^. tRED_A=1;YELLOW_A=1;GREEN_A=0;
RED_B=0;YELLOW_B=1;GREEN_B=1;
DelayMS(2000);
# S$ L* T. f; P9 O2 E! [Operation_Type=2;
5 P1 D  N: n9 C; H9 Bbreak;
case 2: //東西向黃燈閃爍，綠燈關閉
DelayMS(300);
! H( x6 W' q1 W" x, E8 q' DYELLOW_A=~YELLOW_A;GREEN_A=1;
) J" C0 `. q7 m7 L* F. |$ }if(++Flash_Count!=10) return; //閃爍 5 次
# c0 f8 v" p" q; s0 AFlash_Count=0;
Operation_Type=3;
break;
: s0 s( {2 l' d$ h% n9 ccase 3: //東西向紅燈，南北向綠燈亮
RED_A=0;YELLOW_A=1;GREEN_A=1;
4 h9 j1 D- G% ]4 _. y3 ~: aRED_B=1;YELLOW_B=1;GREEN_B=0;
/ d" J0 N) }6 ?; |* g3 p! C" qDelayMS(2000);
* J, V2 J; e+ O3 D0 }- |Operation_Type=4;
break;
5 n/ T4 m6 q  a$ c. l. Y" ]case 4: //南北向黃燈閃爍 5 次
. U' W0 z5 X6 R. {* f) UDelayMS(300);
YELLOW_B=~YELLOW_B;GREEN_B=1;
if(++Flash_Count!=10) return;
/ h5 k. H6 s% U7 k) C# pFlash_Count=0;
# _' @. U- q" X' y( |2 ROperation_Type=1;
5 }: [$ t& s" D5 K' h: v}
' h1 h2 d3 R9 y8 U/ g6 }; z6 A6 t}
  `% q6 N5 U3 _$ d( x/ V//主程序
void main()
{
9 U; O4 g7 V4 D3 r- h: f# ]9 {while(1) Traffic_Light();
0 P9 m/ o6 n1 g' x- R  E3 G}