課程設計題目：數字音樂盒
課程設計要求：1.利用I/O口產生一定頻率的方波，驅動蜂鳴器，發出不同的音調，從而演奏樂曲（最少三首樂曲，每首不少于30秒）
2．采用LCD顯示信息
3．開機時有英文歡迎提示字符，播放時顯示歌曲序號（或名稱）
4．可通過功能鍵選擇樂曲，暫停，播放。
5．選作內容：顯示樂曲播放時間或剩余時間
硬件電路：本設計中用到了89C51單片機，4*4鍵盤，蜂鳴器，16*2 LCD，七段
顯示數碼管LED。
原理說明：當鍵盤有鍵按下時，判斷鍵值，啟動計數器T0，產生一定頻率的脈沖，驅動蜂鳴器，放出樂曲。同時啟動定時器T1，顯示樂曲播放的時間，并驅動LCD,顯示歌曲號及播放時間。也可在LED顯示歌曲號。
（1） 硬件電路中用P1.0~P1.7控制按鍵，其中P1.0~P1.3掃描行，P1.4~P1.7掃描列。
（2） 用P0.0~P0.7，P2.0~P2.7控制LED,其中P0.0~P0.7控制七段碼a,b,c,d,e,f,g,用P2.0~P2.7為數碼管位選信號。
（3） 用，P2.0~P2.2作為LCD的RS,R/W,E的控制信號。用P0.0~P0.7作為LCD的D0~D7的控制信號。
（4） 用P3.7口控制蜂鳴器。
（5） 電路為12MHZ晶振頻率工作，起振電路中C1,C2均為30pf。
電路圖：
【試驗時請仔細閱讀后文說明！此圖僅為我站制作，并不代表原作者意愿；若您制作成功，望在網絡推廣。】
實驗控制流程圖如下：
鍵盤如下：
|
0 |
1 |
2 |
3 |
|
4 |
5 |
6 |
7 |
|
8 |
9 |
A |
B |
|
C |
D |
E |
F |
實驗程序如下：
RS BIT P2.0 ;定義液晶顯示端口標號
RW BIT P2.1
E BIT P2.2
;********************************************
L50MS EQU 60H
L1MS EQU 61H
L250MS EQU 62H
SEC EQU 65H
MIN EQU 64H
HOU EQU 63H
;*******************************************
org 0000h
ljmp main
ORG 000BH
LJMP TT0
ORG 001BH
LJMP T1INT
org 1000h
main:
;-----------------------;液晶初始化
MOV SP,#70H
MOV P0,#01H ;清屏
CALL ENABLE
MOV P0,#38H ;8位，2行顯示
lCALL ENABLE
MOV P0,#0FH ;屏顯on，光標on,閃爍on
lCALL ENABLE
MOV P0,#06H ;計數地址加1，顯示幕on
lCALL ENABLE
;-------------------------------內存初始化
lcall initil
;-------------------------------
key1:
lcall key
lcall modd
ljmp key1
;---------------------鍵盤掃描
key:
nop
nop
lcall ks
jnz k1 ;有按鍵轉到K1
lcall kaiji
lcall SOP
xn:
ljmp key
k1:
lcall modd
lcall modd
lcall ks
jnz k2
ljmp key
k2:
mov R2,#0feh ;讀鍵盤
mov R4,#00h
k3:
mov A,R2
mov P1,A
mov A,P1
JB ACC.4,L1 ;為1跳轉，第一行無按鍵
mov a,#00h
ljmp lk
L1:
jb acc.5,L2
mov a,#04h
ljmp lk
L2:
jb acc.6,L3
mov a,#08h
ljmp lk
L3:
jb acc.7,next1
mov a,#0ch
;-------------------------------------------------------
lk:
add a,R4
push acc
k4:
lcall delay1 ;若同時有其他按鍵，則等待
lcall ks
jnz k4
;--------------------------------------------------------
mov r3,#07h
clr a
mov r0,#30h
mov r1,#31h
mm1:
mov a,@r1
mov @r0,a
inc r0
inc r1
djnz r3,mm1
pop acc
mov @r0,a
RET
;------------------------------------------------------
next1:
inc R4 ;------列掃描
mov a,R2
JNB acc.3,n2
ljmp n1
n2:
ljmp key
n1:
rl a
mov R2,a
ljmp k3
;----------------------------------------------
ks:
mov a,#0f0h ;判斷P1口
mov P1,a
nop
nop
mov a,P1
cpl a
anl a,#0f0h
RET
;--------------------------------------------------
DELAY1:
SETB RS0
dl:
mov R5,#0ah
dl2:
mov R6,#63
dl3:
nop
nop
djnz R6,dl3
djnz R5,dl2
CLR RS0
RET
;---------------------------------------------------
;30H-37H初值為零
;----------------------------------------------------
initil:
mov r3,#08h
mov r0,#30h
m1:
mov @r0,#00h
inc r0
djnz r3,m1
RET
;----------------------------------------------------
;顯示
;---------------------------------------------------
modd:
MOV P0,#8EH
lCALL ENABLE
mov A,37H
mov DPTR,#TABLE3
MOVC A,@A+DPTR
lCALL WRITE2
RET
;--------------------------------------------------
;開機提示字
;-------------------------------------------------
kaiji:
mov a,37h
cjne a,#0fh,DFF
MOV P0,#80H ;設光標地址
lCALL ENABLE
MOV DPTR,#TABLE1;寫數據
lCALL WRITE1
DFF:
RET
;----------------------------------------------
;按鍵值播放歌曲
;----------------------------------------------
SOP:
mov a,37h
cjne a,#01h,A11
LCALL MODD
MOV 52H,#HIGH TABLE10
MOV 53H,#LOW TABLE10
LCALL INITILE2
lcall MAIN0
A11:
CJNE A,#02H,A22
LCALL MODD
MOV 52H,#HIGH TABLE20
MOV 53H,#LOW TABLE20
LCALL INITILE2
lcall MAIN0
A22:
CJNE A,#03H,A33
LCALL MODD
MOV 52H,#HIGH TABLE30
MOV 53H,#LOW TABLE30
LCALL INITILE2
lcall MAIN0
A33:
CJNE A,#04H,A44
LCALL MODD
MOV 52H,#HIGH TABLE40
MOV 53H,#LOW TABLE40
LCALL INITILE2
lcall MAIN0
A44:
CJNE A,#05H,A55
LCALL MODD
MOV 52H,#HIGH TABLE50
MOV 53H,#LOW TABLE50
LCALL INITILE2
lcall MAIN0
A55:
CJNE A,#06H,A66
LCALL MODD
MOV 52H,#HIGH TABLE60
MOV 53H,#LOW TABLE60
LCALL INITILE2
lcall MAIN0
A66:
CJNE A,#07H,A77
LCALL MODD
MOV 52H,#HIGH TABLE70
MOV 53H,#LOW TABLE70
LCALL INITILE2
lcall MAIN0
A77:
CJNE A,#08H,A88
LCALL MODD
MOV 52H,#HIGH TABLE80
MOV 53H,#LOW TABLE80
LCALL INITILE2
lcall MAIN0
A88:
CJNE A,#09H,A99
LCALL MODD
MOV 52H,#HIGH TABLE90
MOV 53H,#LOW TABLE90
LCALL INITILE2
lcall MAIN0
A99:
CJNE A,#0AH,AAA
LCALL MODD
MOV 52H,#HIGH TABLE100
MOV 53H,#LOW TABLE100
LCALL INITILE2
lcall MAIN0
AAA:RET
;******************************************
INITILE2:
MOV L50MS,#20
MOV L1MS,#00H
MOV L250MS,#00H
MOV SEC,#00H
MOV MIN,#00H
MOV HOU,#00H
MOV A,HOU
MOV B,#10
DIV AB
ADD A,#30H ;將BCD嗎轉化為ASIIC碼
MOV P0,#0C8H ;顯示小時十位
CALL ENABLE
CALL WRITE2
MOV A,B
ADD A,#30H
MOV P0,#0C9H ;顯示小時個位
CALL ENABLE
CALL WRITE2
MOV A,#3AH
MOV P0,#0DH ;顯示冒號
CALL ENABLE
CALL WRITE2
MOV A,MIN
MOV B,#10
DIV AB
ADD A,#30H
MOV P0,#0CBH ;顯示分十位
CALL ENABLE
CALL WRITE2
MOV A,B
ADD A,#30H
MOV P0,#0CCH ;顯示分個位
CALL ENABLE
CALL WRITE2
MOV A,#3AH
MOV P0,#0CDH ;顯示冒號
CALL ENABLE
CALL WRITE2
MOV A,SEC
MOV B,#10
DIV AB
ADD A,#30H
MOV P0,#0CEH ;顯示秒十位
CALL ENABLE
CALL WRITE2
MOV A,B
ADD A,#30H
MOV P0,#0CFH ;顯示秒個位
CALL ENABLE
CALL WRITE2
MOV P0,#0C0H ;設光標地址
CALL ENABLE
MOV DPTR,#TABLE2;寫數據
CALL WRITE1
RET
;*********************************************寫指令
ENABLE:
CLR RS
CLR RW
CLR E
LCALL DELAY
SETB E
RET
;**********************************************寫數據
WRITE1:
MOV R1,#00H
A1:
MOV A,R1
MOVC A,@A+DPTR
CALL WRITE2
INC R1
CJNE A,#0FEH,A1 ;未到字符串末尾繼續
RET
WRITE2:
MOV P0,A
SETB RS
CLR RW
CLR E
CALL DELAY
SETB E
RET
;**********************************************
DELAY:
MOV R4,#05
D1:
MOV R5,#0FFH
DJNZ R5,$
DJNZ R4,D1
RET
;----------------------------------------------
TAB:
db 0c0h,0f9h,0a4h,0b0h,99h,92h,82h,0f8h
db 80h,90h,88h,83h,0c6h,0a1h,86h,8eh
TAB1:db 89h,86h,0c7h,0c7h,0c0h
TAB2:db 0c6h,88h,0c0h
TABLE1:DBWELCOM HERE,0FEH
TABLE2:DBDFF WB ,0FEH
TABLE4:DB CAU,0FEH
TABLE3:DB 30H,31H,32H,33h
DB 34H,35H,36H,37H
DB 38h,39H,41H,42H
DB 43H,44H,45H,46H
;--------------------------------------------------------------------
;播放歌曲程序
;--------------------------------------------------------------------
MAIN0:
MOV TMOD,#11H
MOV IE,#8aH
;MOV TH1,#3cH
;MOV TL1,#0b0H
lcall ks
jnz TTM12
MOV 40H,#00H
;---------------------------------------------------------
NEXT20:
MOV A,40H
MOV DPH,52H
MOV DPL,53H
MOVC A,@A+DPTR
MOV R2,A
JZ STOP
ANL A,#0FH
MOV R1,A
MOV A,R2
SWAP A
ANL A,#0FH
JNZ SING
CLR TR0
JMP W1
;----------------------------------------------------------
SING:
DEC A
MOV 22H,A
RL A
MOV DPTR,#TABLE00
MOVC A,@A+DPTR
MOV TH0,A
MOV 21H,A
MOV A,22H
RL A
INC A
MOVC A,@A+DPTR
MOV TL0,A
MOV 20H,A
SETB TR0
SETB TR1
W1:
LCALL DELAY30
INC 40H
LCALL KS ;------有鍵跳出
JNZ STOP
LJMP NEXT20
;-----------------------------------------------------------
STOP:
CLR TR0
CLR TR1
LJMP MAIN0
;----------------------------------------------------------
TTM12:
LCALL K2
MOV A,37H
CJNE A,#0EH,TTM13
CLR TR1
LCALL DELAY1
TTM120:
LCALL KS
LCALL DELAY1
JZ TTM120
LCALL K2
MOV A,37H
CJNE A,#0EH,TTM120
SETB TR1
LJMP NEXT20
TTM13:
CJNE A,#0CH,TTM14
MOV A,52H
INC A
MOV 52H,A
MOV A,53H
INC A
MOV 53H,A
MOV A,36H
INC A
MOV 37H,A
LJMP TTM2
TTM14:
CJNE A,#0DH,TTM2
MOV A,52H
DEC A
MOV 52H,A
MOV A,53H
DEC A
MOV 53H,A
MOV A,36H
DEC A
MOV 37H,A
;------------------------------------------------------
TTM2:
RET
;***************************************************
;定時器中斷子程序0
;***************************************************
TT0:
PUSH ACC
PUSH PSW
MOV TL0,20H
MOV TH0,21H
CPL P3.7
POP PSW
POP ACC
RETI
;***************************************************
;定時器中斷子程序1
;***************************************************
T1INT:
MOV TH1, #3cH
MOV TL1, #0b0H
DJNZ L50MS,X4
MOV L50MS,#20
;****************---每秒種時鐘刷新秒顯示一次
SECSET:
MOV A,SEC
MOV B,#10
DIV AB
ADD A,#30H
MOV P0,#0CEH ;顯示秒十位
lCALL ENABLE
lCALL WRITE2
MOV A,B
ADD A,#30H
MOV P0,#0CFH ;顯示秒個位
lCALL ENABLE
lCALL WRITE2
MOV A,SEC
INC A
MOV SEC,A
XRL A,#60
X4:
JNZ OUT
MINSET:
MOV SEC,#00H
;*************************************每分鐘刷新分顯示一次
MOV A,MIN
INC A
MOV MIN,A
MOV B,#10
DIV AB
ADD A,#30H
MOV P0,#0CBH ;顯示分十位
lCALL ENABLE
lCALL WRITE2
MOV A,B
ADD A,#30H
MOV P0,#0CCH ;顯示分個位
lCALL ENABLE
lCALL WRITE2
MOV A,MIN
MOV B,#3
MUL AB
MOV B,#100
DIV AB
MOV R2,A
MOV A,#10
XCH A,B
DIV AB
MOV A,MIN
XRL A,#60
JNZ OUT
HOUSET:
MOV MIN,#00H
;**************************************每小時刷新小時顯示一次
MOV A,HOU
MOV B,#10
DIV AB
ADD A,#30H ;將BCD嗎轉化為ASIIC碼
MOV P0,#0C8H ;顯示小時十位
CALL ENABLE
CALL WRITE2
MOV A,B
ADD A,#30H
MOV P0,#0C9H ;顯示小時個位
CALL ENABLE
CALL WRITE2
MOV A,HOU
INC A
MOV HOU,A
XRL A,#10
JNZ OUT
SJMP OVERFLOW
OUT:
RETI
;*************************************溢出處理
OVERFLOW:
MOV L50MS,#20
MOV L1MS,#00H
MOV L250MS,#00H
MOV SEC,#00H
MOV MIN,#00H
MOV HOU,#00H
RETI
;--------------------------------------------------------------------
DELAY30:
MOV R7,#2
W2:
MOV R4,#125
W3:
MOV R3,#248
DJNZ R3,$
DJNZ R4,W3
DJNZ R7,W2
DJNZ R1,DELAY30
RET
;--------------------------------------------------------------------
TABLE00:
DW 64580,64684,64777,64820
DW 64898,64968,65030,64260
DW 64400,64524,65058,63835,64021
;-------------------------------------------------------------------
;第一首《精忠報國》
;--------------------------------------------------------------------
TABLE10:
DB 66H,52H,36H,22H,12H,12H,22H,32H,98H,84H,82H,92H,14H,12H,22H
DB 32H,52H,22H,42H,38H,66H,52H,36H,22H,12H,22H,22H,32H,98H
DB 24H,22H,32H,54H,52H,32H,92H,12H,92H,82H,98H,66H,52H,36H,22H
DB 12H,12H,22H,32H,98H,84H,82H,92H,14H,12H,22H,32H,52H,22H,42H,38H
DB 66H,52H,36H,22H,12H,22H,22H,32H,98H,24H,22H,32H,54H,52H,32H
DB 22H,12H,92H,82H,98H,14H,24H,34H,44H,64H,0B4H,64H,32H,52H
DB 62H,0B2H,62H,52H,38H,24H,22H,32H,54H,52H,62H,52H,32H,32H,22H,38H
DB 64H,0B4H,64H,32H,52H,62H,0B2H,62H,52H,38H,22H,22H,22H,32H,52H,52H
DB 52H,62H,7FH,74H,04H,58H,6FH
DB 00
;--------------------------------------------------------------------
;第二首《月亮代表我的心》
;--------------------------------------------------------------------
TABLE20:
DB 02H,82H
DB 16H,32H,54H,02H,52H
DB 0A6H,32H,54H,02H,52H
DB 64H,74H,0B6H,64H
DB 52H,5CH,32H,22H
DB 16H,12H,14H,32H,22H
DB 16H,12H,14H,22H,32H
DB 26H,12H,94H,22H,32H
DB 2CH
DB 32H,52H
DB 36H,22H,14H,54H
DB 0ACH,92H,0A2H
DB 96H,0A2H,96H,82H
DB 3CH,54H
DB 36H,22H,14H,54H
DB 0ACH,92H,0A2H
DB 16H,12H,14H,22H,32H
DB 2CH,02H,82H
DB 16H,32H,56H,12H
DB 0A6H,32H,56H,52H
DB 66H,72H,0B6H,62H
DB 62H,52H,58H,32H,22H
DB 16H,12H,14H,32H,22H
DB 16H,12H,14H,22H,32H
DB 26H,92H,0A4H,12H,22H
DB 1CH
DB 00
;-------------------------------------------------------------------
;第三首《看我七十二變》
;-------------------------------------------------------------------
TABLE30:
DB 0d4H,84H,94H,82H,92H
DB 12H,22H,82H,92H,02H,92H,82H,0d2H
DB 82H,92H,14H,84H,02H,0d1H,0d1H
DB 0c2H,0d2H,84H,0d2H,0d2H,82H,82H
DB 84H,82H,82H,94H,82H,0d2H
DB 82H,82H,82H,92H,02H,82H,82H,0d2H
DB 0c4H,84H,0d4H,92H,0d2H
DB 82H,0d2H,82H,92H,98H
DB 04H,94H,88H
DB 04H,94H,88H
DB 04H,94H,88H
DB 04H,94H,88H,04H
DB 32H,32H,22H,12H,02H,92H,12H,92H
DB 32H,32H,22H,12H,02H,92H,12H,92H
DB 32H,32H,22H,12H,02H,92H,12H,22H
DB 54H,44H,34H,12H,22H
DB 34H,22H,12H,02H,92H,12H,92H
DB 32H,32H,22H,12H,02H,92H,12H,92H
DB 32H,32H,22H,12H,02H,92H,12H,22H
DB 54H,44H,32H,22H,12H,92H
DB 00
;--------------------------------------------------------------------
;第四首《同一首歌》
;--------------------------------------------------------------------
TABLE40:
DB 88h,14h,24h,36H,42H,34H,14H,28H,14H,94H
DB 1fH,88H,14H,24H,34H,32H,42H,54H,14H
DB 46H,32H,54H,22H,32H,32H,22H,2CH,38H,54H,74H
DB 76H,62H,68H,54H,52H,62H,74H,62H,52H,3fH
DB 46H,42H,54H,64H,54H,42H,32H,28H,0a4H,0a2H
DB 92H,84H,94H,1fH,0b8H,68H,46H,52H,68H
DB 74H,72H,72H,74H,62H,52H,3fH,0b8H,68H
DB 46H,52H,68H,64H,62H,62H,64H,42H,32H,2fH
DB 58H,14H,24H,36H,42H,34H,12H,12H,26H,22H,24H,22H,12H
DB 94H,9cH,0a8H,0a6H,92H,84H,64H,54H,22H,22H,46H,42H,44H,32H,22H,5fH
DB 00
;--------------------------------------------------------------------
;第五首《大海》
;--------------------------------------------------------------------
TABLE50:
DB 82H,92H,12H,14H,12H,14H,92H,82H,12H,14H,22H,14H,92H,12H,22H,24H
DB 22H,24H,12H,92H,22H,24H,32H,24H,32H,52H,62H,54H,52H,64H,52H,32H
DB 22H,32H,22H,12H,94H,82H,92H,12H,14H,12H,14H,94H,1cH
DB 82H,92H,12H,14H,12H,14H,92H,82H,12H,14H,22H,14H,92H,12H,22H,24H
DB 22H,24H,12H,92H,22H,24H,32H,24H,32H,52H,62H,54H,52H,64H,52H,32H
DB 22H,32H,22H,12H,94H,82H,92H,12H,14H,12H,14H,22H,12H,1cH,32H,52H
DB 62H,64H,62H,64H,0b2H,62H,52H,54H,62H,54H,32H,22H
DB 12H,14H,12H,14H,24H,3cH,32H,22H,12H,14H,12H,14H,0b2H,62H,52H,54H,62H,54H,32H,52H
DB 66H,0b2H,0b4H,62H,52H,5cH,32H,52H,62H,64H,62H,64H,0b2H,62H,52H,54H
DB 62H,54H,32H,22H,12H,14H,12H,14H,54H,3cH,32H,22H,12H,14H,12H,14H,22H,32H
DB 52H,54H,32H,54H,32H,52H,6fH,04H,02H,92H,32H,24H,12H,1fH
DB 00
;--------------------------------------------------------------------
;第六首《兩只蝴蝶》
;--------------------------------------------------------------------
TABLE60:
DB 32H,22H,38H,02H,22H,32H,22H,18H,04H,92H,12H,24H,22H,32H,22H,12H,92H,92H,88H,04H,32H,22H
DB 38H,02H,22H,32H,22H,18H,04H,92H,12H,24H,22H,32H,22H,21H,92H,12H,28H,04H,32H,22H
DB 38H,02H,22H,32H,22H,18H,04H,92H,12H,24H,22H,32H,22H,12H,92H,91H,11H,88H
DB 04H,32H,52H,58H,02H,52H,62H,52H,38H,04H,22H,22H,24H,22H,32H,22H,12H,92H,92H
DB 12H,12H,1cH,08H,02H,52H,52H,62H,0b2H,72H,72H,62H,32H,22H,22H,22H
DB 38H,02H,32H,32H,52H,64H,64H,02H,92H,32H,22H,28H,04H,32H,52H,52H,32H,54H,02H,0b4H,72H
DB 62H,72H,34H,02H,62H,62H,72H,62H,52H,32H,22H,02H,32H,22H,32H
DB 58H,02H,52H,52H,62H,0b2H,72H,72H,62H,32H,22H,22H,22H
DB 38H,02H,32H,32H,52H,64H,64H,02H,92H,32H,22H,28H,04H,32H,52H,52H,32H,54H,02H,0b4H,72H
DB 62H,72H,34H,02H,62H,62H,72H,62H,52H,32H,22H,02H,84H,92H,1cH
DB 00
;--------------------------------------------------------------------
;第七首<<世上只有媽媽好>>
;--------------------------------------------------------------------
TABLE70:
DB 66H,52H,34H,54H,0B4H,62H,52H,68H,34H,52H,62H,54H,34H,12H,92H,52H,32H,28H
DB 26H,32H,54H,52H,62H,34H,24H,18H,56H,32H,22H,12H,92H,12H,8FH
DB 66H,52H,34H,54H,0B4H,62H,52H,68H,34H,52H,62H,54H,34H,12H,92H,52H,32H,28H
DB 26H,32H,54H,52H,62H,34H,24H,18H,56H,32H,22H,12H,92H,12H,8FH
DB 66H,52H,34H,54H,0B4H,62H,52H,68H,34H,52H,62H,54H,34H,12H,92H,52H,32H,28H
DB 26H,32H,54H,52H,62H,34H,24H,18H,56H,32H,22H,12H,92H,12H,8FH
DB 00
;--------------------------------------------------------------------
;第八首歌《彩云追月》
;--------------------------------------------------------------------
TABLE80:
DB 86H,92H,12H,22H,32H,52H,68H,63H,52H,34H,62H,0B2H,0B2H,62H,51H,61H,51H,31H,54H
DB 62H,0B2H,0B2H,62H,52H,32H,52H,52H,51H,61H,51H,31H,34H,52H,62H,74H,32H,52H,52H,32H,21H,31H,21H,11H,24H
DB 32H,52H,52H,32H,22H,12H,24H,32H,52H,52H,32H,62H,52H,61H,51H,31H,21H,21H,31H,21H,11H,1CH
DB 21H,31H,22H,23H,31H,21H,18H,02H,0B2H,0BCH,0B4H,72H,61H,51H,72H,61H,71H,61H,51H,61H,71H,61H,6FH
DB 86H,94H,12H,22H,32H,52H,64H,62H,51H,31H,52H,21H,31H,21H,33H,62H,0B2H,0B2H,62H,51H,61H,51H,31H,54H
DB 62H,0B2H,72H,61H,51H,51H,61H,51H,31H,54H,61H,0B2H,72H,61H,51H,51H,61H,51H,31H,32H,21H,11H,32H,51H,61H,54H
DB 02H,32H,24H,32H,52H,52H,32H,22H,31H,21H,11H,24H,32H,52H,62H,0B2H,72H,61H,51H,61H,51H,31H,32H,52H,52H,32H,62H
DB 51H,31H,31H,21H,11H,91H,23H,31H,21H,1CH,12H,24H,32H,62H,51H,31H,34H,0B4H,72H,61H,51H,63H,71H,64H
DB 0B2H,54H,72H,62H,71H,61H,54H,61H,51H,31H,21H,34H,73H,61H,54H,22H,32H,52H,22H,36H,52H,62H,61H,31H,32H,21H,11H,21H,11H,91H,81H
DB 94H,52H,62H,52H,42H,32H,22H,32H,52H,0B4H,74H,64H,52H,61H,51H,41H,5CH,02H,52H,0B4H,74H,63H,51H,61H,51H,31H,21H
DB 00
;--------------------------------------------------------------------
;第九首<<十年>>
;--------------------------------------------------------------------
TABLE90:
DB 02H,11H,21H,32H,32H,22H,32H,21H,11H,0A1H,91H,92H,0D1H,91H,83H,91H,0A2H,91H,81H,94H,11H,0A1H,91H,0A1H,98H,03H,81H,0A1H,0A1H,91H,0A1H
DB 98H,04H,02H,11H,21H,32H,32H,22H,32H,21H,31H,51H,11H,13H,31H,22H,22H,21H,11H,0A1H,11H,13H,11H,11H,0A1H,91H,0A1H
DB 11H,93H,94H,03H,81H,11H,0A1H,91H,81H,92H,0A1H,91H,94H,08H,03H,81H,32H,21H,11H,22H,31H,21H,21H,83H
DB 01H,11H,91H,0A1H,11H,61H,51H,11H,34H,01H,31H,21H,31H,48H,23H,31H,32H,42H,38H,03H,11H,21H,52H,31H
DB 33H,31H,31H,41H,51H,61H,23H,21H,21H,41H,31H,21H,13H,0D1H,0D1H,21H,11H,0A1H,11H,91H,92H,91H,11H,0A1H,91H
DB 0A1H,31H,31H,22H,0A1H,11H,14H,01H,11H,21H,31H,63H,31H,42H,51H,31H,31H,22H,11H,21H,52H,31H,33H,31H,31H,41H
DB 51H,61H,23H,21H,21H,41H,31H,21H,13H,0D1H,0D1H,21H,11H,0A1H,11H,91H,92H,91H,11H,0A1H,91H
DB 0A2H,41H,31H,22H,31H,21H,12H,12H,11H,11H,21H,31H,63H,51H,32H,11H,21H,26H,11H,0A1H,18H
DB 00
;--------------------------------------------------------------------
;第十首<<你的愛給了誰>>
;--------------------------------------------------------------------
TABLE100:
DB 02H,91H,0A1H,16H,21H,11H,0A6H,81H,0A1H,9CH,02H,91H,0A1H,16H,21H,31H,24H,21H,0A1H,11H,0A1H
DB 9CH,02H,11H,21H,36H,32H,24H,21H,0A1H,11H,0A1H,9CH,02H,91H,0A1H,14H,11H,11H,21H,11H,0A4H,04H,04H,02H,0A1H,11H,0A1H,93H,92H
DB 02H,61H,71H,0B4H,0B2H,0B1H,0B1H,76H,0B1H,71H,6CH,02H,61H,71H,0B6H,0B1H,0B1H,76H,0B1H,71H,6CH,02H,51H,61H,56H,61H,51H,54H,51H,0B1H,71H,0B1H
DB 72H,62H,68H,02H,61H,51H,66H,62H,58H,0CH,02H,51H,41H,5FH
DB 02H,91H,0A1H,16H,21H,11H,0A6H,81H,0A1H,9CH,02H,91H,0A1H,16H,21H,31H,24H,21H,0A1H,11H,0A1H
DB 9CH,02H,11H,21H,36H,32H,24H,21H,0A1H,11H,0A1H,9CH,02H,91H,0A1H,14H,11H,11H,21H,11H,0A4H,04H,04H,02H,0A1H,11H,0A1H,93H,92H
DB 02H,61H,71H,0B4H,0B2H,0B1H,0B1H,76H,0B1H,71H,6CH,02H,61H,71H,0B6H,0B1H,0B1H,76H,0B1H,71H,6CH,02H,51H,61H,56H,61H,51H,54H,51H,0B1H,71H,0B1H
DB 66H,62H,54H,0B2H,71H,61H,6CH
DB 00
END
按鍵功能說明：
1~A：十首歌曲
C：上一首歌曲
D：下一首歌曲
E：歌曲暫停
F：開機畫面
程序調試中出現的問題及解決的辦法：
1． 有時會出現程序一點錯誤也沒有，但就是不能正常運行的現象，最后我們發行是因為程序中有的指令書寫得不規范導致的，例如有的RET返回指令一定要按正確格式書寫或在兩行指令間最好不要留空行。
2． 程序中的跳轉指令的運用很重要，為保險起見，都用LJMP,我們就遇到過跳轉指令用錯程序無法正常運行的現象。當用JNZ指令時，跳轉范圍比較少，這時要用一個標號中轉。
3． 編程時要注意，在程序開始時，要寫入各定時器中斷的入口地址。
4． 編程過程中要注意加注釋或分割線，否則，在程序過長時容易變得很亂，不便于查找或更改。
5． 程序的結構要設計的合理，避免上下亂調用的現象，這樣會使程序更加清晰化。
6． 編程前要加流程圖，這樣會使思路清晰，例如數字音樂盒的設計思路完全可以按著MP3的工作方式列寫流程圖。
7． LCD計時正常顯示的解決辦法：
a. 兩個定時器同時工作，存在中斷時序問題，剛開始時我們把定時器1設定在方式3，計250us，由于定時中斷過于頻繁，使CPU負載過大，導致音樂不能正常播放，時間不能正常顯示。解決辦法：將定時器1設定在工作方式1，16位計數，計50ms,效果有很大改觀。但還有問題。
b. 當音樂為全4拍起始時，此時音樂節奏與定時器T1中斷頻率錯開，LCD顯示和音樂播放都會好一些。
c. 另外，在歌曲中，當遇到一個音符發音為4拍，在編曲中為*CH，托因時間較長，當定時器T1此時來中斷時，就會對歌曲播放產生影響，若改為發音一拍，中斷對歌曲播放影響減弱，但音樂效果變差。
d. 改進方案：若采用可以定時時間更長的單片機，可以避免所有問題。
收獲，體會與建議：
1． 本學期學習單片機的時間只有8周時間，對單片機的硬件設計，軟件設計掌握的深度不夠，但通過此次課程設計，卻改變了很多，首先對于硬件電路的工作原理有了進一步的學習，同樣就有了進一步的認識；其次軟件方面，在程序的設計，程序的調試方面都學到了很多東西，這是第一次編寫單片機的大程序，很有成就感。
2． 在一個好的氛圍里才能踏下心來做東西，在這幾天課設的時間里，實驗室的氛圍對我們的影響很大，大家一起努力，這也是我們能完成課設的動力。另外在編程中出現問題時，一定要戒驕戒躁，腳踏實地，認真看書，仔細分析，仔細調試，就一定會發現錯誤，克服困難，我們也是這么做的，這在課設中十分重要。
3． 最后要提一點建議，希望下一次課程設計中，每個人都能有一塊實驗開發板，這樣能使每個人都能得到充分的鍛煉！ |
66821730(技術支持)
