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#include<AT89X52.h>' ~* ^; k, ]. s- z9 V2 p, T
#include<intrins.h>
) ^( c: C# ~- G& p. S2 V. }#define uchar unsigned char
6 Y& x$ \( P& H" F" p#define uint unsigned int( u, w2 [/ }# \2 H( e
uchar key,n,i,count,digital_number = 0,num,shi,ge; + y% b8 {5 [1 g1 {6 T
uchar code xx[]={0xee,0xde,0xbe,0x7e,0xed,0xdd,0xbd,0x7d,0xeb,0xdb,0xbb,0x7b,0xe7,0xd7,0xb7,0x77}; //按键
) ~9 _& T# @) ^8 ounsigned char code Tab[ ]={0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, 0x7f,0x6f}; //1-9段码& \; T5 X5 S$ O' `6 o
unsigned char code port[]={0xef,0xdf};//数码管+ ` K2 ~! r9 R( v7 T% s
void delay(uint i) //延时函数
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, G8 Q) q% R P [% { while(i--);, w {* S, a' X1 u e8 E; a# V
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void keyscan() I8 ]% ?8 y) D3 Z& k4 D9 z
{
5 e! X/ s, _8 t# @( ~# H uchar l,h,i; - Q' }% W# j- U
P3=0x0f;
+ \, W# m4 e! F j0 } l=P3&0x0f;, _9 j& X1 T; B3 n
if(l!=0x0f)- ?2 G1 b" t/ m" p7 `& A3 e% l
{
( Q$ o7 Y$ c- b/ Q5 n; @ delay(100);
, l( B+ V, L7 A" a4 t P3=0x0f;
7 T D7 Q7 X( J$ m2 |& w l=P3&0x0f;
0 N4 {4 b' k' t5 `9 e! { if(l!=0x0f)
" X; D" N5 I6 z4 `0 c h=P3&0xf0; ( J2 }, c4 p& z( `3 H
P3=0xf0;
; L- H k; U1 F1 ?) d& h h=P3&0xf0;
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( j6 t/ z' N% y) X$ X" B' q$ t key=l+h;
9 D* X9 E* @2 C0 O( w& a for(i=0;i<16;i++)/ M3 X& o& X, w6 P" u" m
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if(key==xx) : e: l! @/ q& A9 p6 j
n=i;" O/ P8 J _4 f+ l% Q
}
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& O5 E7 t4 ~1 b! P. L, K# i9 a' z' Xint main()! C7 H7 h4 m- ~' s+ o5 n
{
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% V6 p" Q6 T- p9 L/ t TMOD=0X11; //T1定时器 T0做定时器+ j% Z* J5 L/ ]0 q1 L1 d! _+ [& [- P
TL0=0X00; //定时五十微秒赋初值3 z; D2 K- A/ @( b( M/ T
TH0=0X4C;
: u& C1 P# K o( N: N TR0=1; //启动定时器/计数器
- o, t) a$ \) K- j! F' x5 c: _ EA=1; //启动CPU中断6 x2 P6 A1 G0 c& [- Q0 e2 E+ H
ET0=1; //T0中断* l0 R( x' U5 S& f1 [8 S( u5 I# T
TL1=0XFA; // 定时3毫秒
1 }: r5 P4 Y$ G/ `# Y3 p# N TH1=0XF2;
3 d; E6 z9 Z- C9 }5 ^6 C1 C6 l TR1=1; //启动定时器/计数器* K% Z% d6 ^4 ]' L& S, @7 V
ET1=1; //T1中断* n( Z, G" t( V; I, g5 i5 F
while(1) //主函数
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, D& @0 ~" t. B& \; A4 O2 t7 x keyscan();
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* _- s$ Z5 H f6 V) r# i' |2 Evoid t0interrupt(void) interrupt 1 //定时器T0的中断处理
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TL0=0X00; //重赋初值
, a. X9 L/ y$ Y2 ] TH0=0X4C;
7 B3 l, S/ `: c& Q+ J count++;
% e, B+ }, y/ U) o if(count==20) //延时一秒4 Q2 B% j! J3 H/ d& D* d# d# |5 F. [
{
4 ]+ n2 N, X. q; Y) B8 k& U- M. Y count=0;) @. W* c0 L$ D* o- T$ v
}
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void t1interrupt(void) interrupt 3 //计数器T1的中断处理3 {' R: B5 V5 o) d; K, v) q2 O
{
* }4 Z! b# K( x ?5 F unsigned char temp;( \7 `0 | Y$ i
TL1=0XFA;& L5 c, m. d2 G @5 D
TH1=0XF2;
" [, e8 P# O3 c: s/ B% K# t P2_6= 0; //处于锁存状态. Q3 I- i6 D" j/ L K* l! q
P2_7= 0;3 {+ O9 D1 M+ d* T2 m+ {6 ?8 u+ }) Y @% M
1 f4 n7 D! T$ @8 U3 U6 ?; m' \; Q! @( z P0 =Tab[n];7 r }! `" B) t1 R4 ]2 n/ J
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P2_6 = 1; //处于直通状态
( l& @% H& {- w1 G$ t% J# j _nop_(); //空指令,延时一个指令周期# T6 j* L7 |, X6 _" [' I
P2_6 = 0; //处于锁存状态
9 B) b9 T: n1 G9 ~+ l* y8 x P0 = port[digital_number]; //数码管显示8 X% R* h" n- q9 X6 t: ~2 j
P2_7= 1;! q2 k" g! X; V$ h( h, `$ L
_nop_();
; g$ }# l2 o8 n. h+ L9 F( p( Y P2_7 = 0;. Q6 C* D1 R9 C( K. J
digital_number ++;2 s& F4 x7 v* N. `
if(digital_number == 2) digital_number = 0; : o! q# k J$ K
}
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2 q/ v6 Z$ u. d6 h7 T5 J! \我瞎改了一部分 一直没实现 求大佬帮忙
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