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本帖最后由 jili1986729 于 2009-10-7 13:42 編輯 5 C5 w% J$ Q4 W0 K% W" z
* h- F( [, x' }我自己用單片機(jī)做的電子琴，比較簡(jiǎn)單，用了一個(gè)功放，自己做了個(gè)矩陣鍵盤
0 ~$ i$ d( K, ]; K: j) P單片機(jī)應(yīng)該用892051，這里89c51，有點(diǎn)浪費(fèi)
& {9 W$ z: _4 j" W. z9 r
9 S, }. b# [# @程序：
. [1 U7 v# f gORG 00H# [ m2 L& A1 }8 ]4 d
AJMP START
9 k D2 L' C* E& t, ]- sORG 001BH3 p; F$ D0 b6 z3 f# g$ s
LJMP TIME1
6 K% A: f3 R+ r! I0 _- o- SORG 30H
: L; T+ \' V7 h0 T5 f: j* B! rSTART:MOV TMOD,#10H
; d9 e9 X" s# }0 @; ^8 G: b MOV IE,#88H+ B: H# r& x: N" y( g1 ^# x
KEY:SETB F0
' C; C. B( C1 G' u* U8 A CLR EA0 D m2 e0 L5 w& b/ V
CLR TR1
/ J, g0 h' Y6 b, C& } MOV P1,#0F0H, [' W7 J' r, ]- `
KEY1:MOV A,P1
m- W0 `9 T( | CPL A
* A9 H# j; g- }7 S$ N ANL A,#0F0H% H4 K( v( g5 e! S) P1 A
JZ KEY
2 [3 Y; U8 w# Y ` CLR F04 @8 U' e( A- v$ \* x5 }7 D6 ?! X
L1: LCALL SKEY
7 m: T' R. u; v" o8 N/ m+ a CLR EA/ \/ l' G/ ?) `6 W* n+ v/ _
CLR TR1
}+ M( O- l u6 ~% Y( s* ` JB F0,KEY
2 N1 H) d2 \$ sMOV 22H,A
* A, l- c4 f$ M& M0 L ADD A,22H
1 n' w6 Z" P: D; A MOV R3,A
7 l# h7 {4 ^+ { MOV DPTR,#TABLE1; @8 Q: |) A+ T9 O' P" ~3 N
MOVC A,@A+DPTR6 Z. U( g3 M0 M" U
MOV TH1,A
) L# R. q- r+ _5 @9 h MOV 21H,A4 o' Z; ]- y) k+ [/ {7 ?+ Q
MOV A,R3
: W- `* k7 s; c+ O3 D1 S5 W& f INC A
8 |# g/ l! h7 `9 h' n; T! S MOVC A,@A+DPTR
6 `" R$ }' D3 V8 R% g MOV TL1,A3 n) }( _: M5 ] @( Q
MOV 20H,A2 V' Z1 i5 Z" p, z9 |7 e9 \
SETB EA5 B$ |) G4 B! P& ]) F: D
SETB TR1
6 `7 a3 ^: n% \& k) _" q! J: hL2:CALL SKEY
. m' c1 p1 e% ?" y- e SETB EA
9 N+ U6 q! @( M SETB TR1( W/ z5 v' I! Y5 F& ?. D
JB F0,KEY
r8 B: \: S* h LJMP L2* \; A) M" V/ H+ |% B
SKEY:MOV A,#00
4 ]1 n4 j! N+ x5 ~ MOV R0,A
2 y' P2 z3 }' J* x9 ^" t! P MOV R1,A% ^9 w! }* I( r" E! p' f/ P$ @
MOV R3,#0FEH
0 }! t- W. U( iSKEY2:MOV A,R32 ?( d; s) p! s$ W
MOV P1,A% ~' g/ o$ `8 U$ W# H
NOP
9 Q# ^- R' V# o% e7 s! {4 J NOP- O' r; D9 j( m+ |' ~1 W. X9 w
NOP3 A# D) p; e* M+ {1 j5 q
MOV A,P1
0 O. _* r2 @( _6 Z& V MOV R1,A
+ F' a7 [ }" A8 J3 ~: J CPL A3 d' U: f. v6 ~# y
ANL A,#0F0H
# D { _. h! c" X2 x! J, ?+ [: Q7 aS123:JNZ SKEY3
4 ?4 W6 ]4 X. H5 U SETB F0( T% }. O# Q8 M0 r) H# }
INC R0
: k5 q6 w3 ~) U* [ SETB C) |% E4 a% W# H/ v5 m
MOV A,R3* J/ L4 G0 q) v2 a W0 o) A
RLC A4 j Q4 R& h+ `5 I) N/ g
MOV R3,A# X* g6 ~2 H) D! {3 e' a" q
MOV A,R0( l! v0 \& Y+ h \
CJNE A,#04H,SKEY20 P3 R Z/ m# N. Q! t7 j* v
EKEY:RET z0 \* ?7 i) @0 P9 k. w$ J. u
SKEY3:CLR F0! p7 a: Z2 n2 ~
MOV A,R1! c; m$ a/ |- e3 S$ |
JNB ACC.4,SKEY5
" n2 A7 c& B: c' D JNB ACC.5,SKEY6- U; q+ A; i$ C# B
JNB ACC.6,SKEY7
% C% D2 R/ q' s JNB ACC.7,SKEY8; p# ^/ }6 Z" C) P+ m
AJMP EKEY
$ q. \2 c$ O* ~/ L& j: pSKEY5:MOV A,#00H6 u, t( G4 ^3 T8 p& e* [( i9 H
MOV R2,A! o$ ^% l1 M* F2 s, T* s; c; f
AJMP DKEY; u8 `1 J5 _/ Q
SKEY6:MOV A,#01H5 g5 ~6 L' T( P% T! g
MOV R2,A# j5 n' d, y( U' U0 U$ n
AJMP DKEY
7 @2 O Q) y2 ^/ d" C( Y( e% E! }2 Q/ RSKEY7:MOV A,#02H
/ p x8 I- X+ n$ C MOV R2,A
! I9 I9 n' f6 B- P9 H4 b- E9 k AJMP DKEY/ c$ k7 I- \5 k7 `% H" y
SKEY8:MOV A,#03H
" d6 Y) y' P) q1 \! e MOV R2,A" X* L& Q6 m) U _: t$ v) L
AJMP DKEY) p" S' k1 {/ R; n
DKEY:MOV A,R08 U8 L* b8 W$ \0 O7 ^; ^( K; M! R9 n* @
ACALL DECODE' q' H7 x- o. j. [4 r" L
AJMP EKEY
9 a7 Z$ M7 ?+ A# P+ D$ b1 `DECODE:MOV A,R0
7 B- Z) X5 i, t# F MOV B,#04H
$ p- w$ s: R3 Q" c6 A MUL AB Z. p ]# N+ m) y
ADD A,R2
1 P' @. l0 P5 n. l& E RET t" b6 Y1 |2 u. G- n& C" S( d3 d Z
TIME1: PUSH ACC$ [! x. S! O# f
PUSH PSW
: a; T* a0 g: a5 {% \# r' `. a CPL P2.4
. \2 C1 J' |3 x0 u4 \) {& R0 i MOV TL1,20H# ]+ p& {. \' q" d0 t" U. I
MOV TH1,21H
" y% {! {* G7 c( n' s POP PSW8 k! ~7 @+ @9 h" ]+ N# U
POP ACC
6 T( F8 o3 S9 {. e RETI
- D( g+ V1 D( m3 r2 j& dTABLE1: DW 64021,64103,64260,64400,64524,64580,64684,647779 x* a" ]/ p g# E) F& z+ \6 X# R0 t
DW 64820,64898,64968,65030,65058,65110,65157,65178
1 R$ }, k4 k$ Q4 d0 K2 NEND |
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發(fā)表于 2009-10-7 13:40:44
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發(fā)表于 2009-10-17 19:54:55
