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51单片机用LCD1602液晶显示年月日，及时间时钟设计代码
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#include<reg52.h>
1 ~+ H u/ t# o9 N# J2 X# r. U4 \#define uchar unsigned char 7 @+ W6 {2 k# G% a2 K! M" a
#define uint unsigned int" X# [+ B+ h6 c' k6 L1 x C
sbit dula=P2^6;" g( \) r% {2 G0 S
sbit wela=P2^7;# \5 g3 F" X- V8 Y
sbit rs=P3^5;7 E. R% O& O" Z. u& S% m; u
sbit lcden=P3^4;
0 Z5 M6 e" B# i, Osbit s1=P3^0;; _4 X' W* K% m
sbit s2=P3^1;
B) m3 {" q0 j( Q$ {) T8 vsbit s3=P3^2;
. T3 i( L9 ^" Y! A' ^sbit rd=P3^7;
7 ]% X8 w, H8 S1 b2 N4 V$ Iuchar count,s1num;& z0 G0 o. Z9 n4 o9 B( D
char miao,shi,fen;
6 _( K2 B1 w8 tuchar code table[]=" 2007-7-30 MON";
7 x' X/ i, N; _9 I5 Z* @# Iuchar code table1[]=" 00:00:00";$ I, f x' j- C) A" z3 W
void delay(uint z)/ E# W8 P" N& o' @7 {& h
{- |1 N& d, ~3 b% [9 n5 u
uint x,y;
- M2 D+ _7 F5 F& |, t2 i, |6 |5 [ for(x=z;x>0;x--)! o' |* l9 U% k
for(y=110;y>0;y--);
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void write_com(uchar com)
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! s; g; v7 S9 H7 ]/ L9 W0 f8 x rs=0;
1 X$ M( _* K7 q lcden=0;& O8 U& j+ T. L3 K
P0=com;
3 E" }+ X5 |% s; t delay(5);( g+ l' d F1 a9 z
lcden=1;
2 Q) E, c/ @/ b; F delay(5);0 {* a% c, H2 J# Z% h
lcden=0; : L) j7 q* t1 Q" F
}
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8 J# F" p1 B8 i& L3 V: t3 X6 evoid write_date(uchar date)
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rs=1;! S: I s1 W# C6 l& J
lcden=0;( s% Q5 p; ]) Z3 @
P0=date;/ I: D# n2 D2 K+ r% Q" Z9 R2 Y
delay(5);7 J" {) P7 x z: p8 m
lcden=1;4 D% F" G" c: d% S r
delay(5);' |/ K# u d) s& C
lcden=0; 4 d9 ? L4 c; }) J& a8 Y
}
' |- s' V* R7 Z+ d1 l% {
6 f$ X7 H. K% s3 Y* a1 t- _; ?void init()+ t" D; ?3 W7 ?. \2 |
{) ~+ P4 M: @1 w0 S
uchar num;
, x5 J8 v! j a' R i: @$ `( P dula=0;
+ L/ Q4 E$ b# M6 z$ g( _ wela=0;
4 F# L6 t0 |1 B3 g0 w+ t6 U7 z lcden=0;
B a0 Z$ Y0 |: h+ U; b9 M// fen=59;
& h/ E6 K0 P( G// miao=53;/ @5 p' N8 N+ E% \/ T r
// shi=23; X5 W( |& e4 R+ l# Q: {
write_com(0x38);
l+ u5 _ Y1 h5 u" ]. A write_com(0x0c);
2 T# G2 l! z. X: [ write_com(0x06);
' W6 a G3 ]6 X) z# u6 P write_com(0x01);
8 u N3 r5 d, p: a write_com(0x80);
: S% X! k! n9 z- {; z* X$ ^5 m for(num=0;num<15;num++)
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- o& ~: Y9 I/ p write_date(table[num]);) q) r3 W* C4 r$ b3 F# b9 g! f
delay(5);
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0 Z7 |2 `6 H2 v5 P" v& L0 l write_com(0x80+0x40); X+ L1 ~: \! \" u
for(num=0;num<12;num++)" o4 ^5 {3 c% |6 j( i0 [
{% o# S/ b5 b' l: i& Y9 s
write_date(table1[num]);( B2 R) I' Y8 V
delay(5);
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TMOD=0x01;/ R8 A! G" E: y5 P, \8 b# }
TH0=(65536-50000)/256;
; r4 f- `" f) _' h) \3 G0 f TL0=(65536-50000)%256;
% S! [2 l4 H9 r4 Q6 F EA=1;
7 W2 i( i4 ?6 V/ P ET0=1;
( H4 W- m% p* y# }" w8 Q: V TR0=1;
( w" x {6 d+ @4 n7 Q( J) q}
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void write_sfm(uchar add,uchar date)
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% N" O, V; @' j( @6 {" [( i5 s uchar shi,ge;3 L8 Z. k. v. ?( `# N: J2 G
shi=date/10;* }/ t1 y6 R+ N
ge=date%10;
7 O- e+ v# ]' ]( Z9 g# R write_com(0x80+0x40+add);; z9 {. U" j- ^, n H. I; T
write_date(0x30+shi);
* _0 W: z7 p8 q1 j0 {$ Z) L write_date(0x30+ge);' J, c6 J$ B7 m# ~3 r
}
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void keyscan()
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rd=0;# Q8 N& v. C" S( I9 a
if(s1==0)
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0 K' Y, w$ @3 @ D2 f delay(5);" a% O& g8 p; L
if(s1==0)
; p& n. R9 }8 K+ Y. O { s1num++;
. C3 N) m( }5 ]1 B4 ]0 I while(!s1);
T1 c, K- a1 z' y+ W% } if(s1num==1)
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TR0=0;9 t/ }: I6 ^2 v( q% L
write_com(0x80+0x40+10);
; A7 {9 D9 w, f% p t. l/ E write_com(0x0f);- V4 d) x( ^ j# E, }' V: ^
}
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6 g o& S T3 b' z# u if(s1num==2)
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2 m; r1 l1 t9 a2 [- O! a- R6 P write_com(0x80+0x40+7); g+ i5 C0 I6 S- P
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if(s1num==3)/ G# [4 i* D% w4 y0 Q6 k8 g9 Y2 b0 p: I. y/ |
{
' ~- H4 ~5 g* ~. |0 y1 i0 L) O# p" M write_com(0x80+0x40+4);+ s1 ]/ U: z* q8 F, W( Q; R
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if(s1num==4)
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s1num=0;
, O6 w) f4 \2 V0 B write_com(0x0c);
+ v5 c- R/ m p* P' l( a Q TR0=1;) ?) H& i9 W2 k6 O8 J# g
}
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}
* X8 D/ M3 T& H9 g8 r$ D if(s1num!=0)
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3 H7 `- T* U ~3 q+ e8 x% U2 ~ if(s2==0)2 m E! q; E6 ^2 J4 ^3 W
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delay(5);/ U. x* ^, Q2 T( n
if(s2==0)5 e1 M. q7 @4 F* u8 |3 I4 h9 Y/ @5 |% o
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while(!s2);* e+ Y7 J' Q, i* C% Q* k/ h
if(s1num==1)
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. N6 ^( Y3 W3 [7 t% d+ I miao++;8 Y7 b9 N$ x0 N- J+ P; v9 C0 x
if(miao==60)- X2 U$ Y: H. Q. ?
miao=0;
- m1 ^! N7 Z6 M, Y write_sfm(10,miao);
3 L( k+ V8 N; ` write_com(0x80+0x40+10);
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}
7 H; o/ c* K, k if(s1num==2)
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fen++;$ @" z1 L& Y: [2 V
if(fen==60)
6 G# r: n6 l# B& |# h fen=0;
% f+ V' \, n5 u; q, `: L write_sfm(7,fen);) S v! ?* a: H( G0 ~
write_com(0x80+0x40+7);
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if(s1num==3)
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shi++;
6 B% X, a/ Z' ?( X9 C/ R( X if(shi==24)
/ ? e+ O9 J( {/ S9 A/ w shi=0;
. k6 o5 w9 v1 @3 n( ]4 ~5 W0 [ write_sfm(4,shi);
, N G( V9 c3 n% b write_com(0x80+0x40+4);
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4 ^$ w: I& z; t* W. X if(s3==0)
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' d/ ?; c) x7 b$ ~ delay(5);
. Y! t* f# S( Y1 }& q7 | if(s3==0)
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5 w% V4 `9 P6 x- S! y8 c while(!s3);, f8 D( m8 a# S( I& y( O/ j7 G+ `! ~
if(s1num==1)1 }( C$ J% d8 U1 s
{
0 S" @: E8 k) g. Q /* if(miao==0)
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miao=59;
, J# X2 x$ s3 p+ I5 }# H write_sfm(10,miao);
0 v" ~& ~1 A1 ]0 Z0 ] b write_com(0x80+0x40+10);
" T! ^' ^+ _# c }*/
4 h G, Q; _7 V. W6 c0 {( x7 K miao--;! Z/ c& }- c5 U: I& f
if(miao==-1)
0 o7 b! H0 q; y U# u miao=59;
( j8 E. @! L) Y write_sfm(10,miao);; J$ R" V! F9 W, P! Y4 n
write_com(0x80+0x40+10);7 [& P6 p% c; `& a
}
7 ~9 \5 ?! h q if(s1num==2)
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fen--;, W& n1 e' O/ u1 [- E
if(fen==-1)5 f$ U5 H, {. l. {/ C c/ I
fen=59;
0 L) ]4 s# q* o$ u4 | write_sfm(7,fen);
% r. x { k# X0 P write_com(0x80+0x40+7);
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if(s1num==3): }7 R0 X6 L+ N5 a1 S5 Y
{3 _( A. u) P& v: V4 G9 S
shi--;
8 e& g6 a5 V2 G3 n& v. n) [ if(shi==-1)
9 i5 Q3 `9 M6 Q" Q shi=23;; [7 }: Q- s5 S; L
write_sfm(4,shi);
7 T6 n/ `$ L- C) B! v( f+ Q, t* N write_com(0x80+0x40+4);+ h% T/ Q7 y/ r- w7 o3 D
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}
, r5 J$ L" S" F8 h: \" u7 v" [void main()
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init();+ K9 D8 Y/ Q6 f
while(1)* K$ j7 {% x& p
{7 g& O# x$ q7 B
keyscan();
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// while(1);9 g8 U5 [. ^* R7 R- A
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void timer0() interrupt 1; V- |$ |$ t* Y6 H
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TH0=(65536-50000)/256;
+ I/ Z) L# z1 ?/ j TL0=(65536-50000)%256;
% r/ j- l$ n0 Q2 R+ _( G count++;
( N+ ?. j. P$ k. Y5 Y* |' n: e; xif(count==18)
# ?0 L7 I) [ M: C5 H/ Q {
! L. u' M0 t7 j9 E0 \4 Q# e count=0;
" h$ n4 T3 Y9 x9 a$ B6 q6 V miao++;0 O9 Z }. g' D" J
if(miao==60)
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miao=0;
7 Z9 |5 K) W: s- I2 E fen++;3 r3 K1 h, g5 ^! T. F2 J4 @0 J# j
if(fen==60)( E$ Y; K) T9 ^. X1 s9 z. p
{
/ N$ R: }4 ~8 }$ }3 \1 R4 w5 F fen=0;
; E; x" u. S+ ?" E' t4 Q0 }& _ shi++;
1 }: U& E& @+ P7 j! O& X$ s if(shi==24)2 t5 `4 @* [% G8 O+ e0 l
{
0 ~" n4 \4 x7 z% R shi=0;
& J$ z4 S) | J9 N }
; \; F ], `: R& Y& L- | write_sfm(4,shi);1 F2 ~% j! w w2 [- Q q" u
}
& f: l& h* [' o& s# M6 p write_sfm(7,fen);/ G% x- w' v+ l+ p6 r! n
}
8 M: t" j* L& P/ Z write_sfm(10,miao);
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}
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发表于 2019-1-18 13:48
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