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單片機(jī)課程設(shè)計(jì)(電子琴)(參考版)

2025-06-29 09:41本頁面
  

【正文】 苞也無一個(gè) DW 0000H ??吹没〞r(shí)過 DW 1D02H,2502H,2502H,2402H,2206H,2902H 。祈禱花開早 DW 2902H,2E02H,2E02H,2C02H,2906H,2702H 。帶著蘭花草 DW 2E02H,2E02H,2E02H,2E02H,2E06H,2C02H 。=== 歌曲表 ===TABLE2: DW 2202H,2902H,2902H,2902H,2906H,2702H 。=== 延時(shí)參數(shù)表 ===DELAY_T: DS 1DH DB 7EH,77H,00H DB 6AH,00H,5EH,00H,54H,4FH,00H,46H DB 00H,3FH,3BH,00H,35H,32H,2FH,00H DB 2AH,27H,00H,23H,00H,1FH,1DH,0C0H DB 1AHDELY10MS: MOV R6,10 D1: MOV R7,248 DJNZ R7,$ DJNZ R6,D1 RET INT_T0: MOV TH0,STH0 MOV TL0,STL0 CPL RETI TABLE: DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H DB 7FH,6FH,77H,7CH,39H,5EH,79H,71H TABLE1: DW 64021,64103,64260,64400 DW 64524,64580,64684,64777 DW 64820,64898,64968,65030 DW 65058,65110,65157,65178 。=== 1/8拍周期表 ===S_PARA: DS 1DH DB 15H,16H,00 DB 19H,00H,1CH,00H,1FH,21H,00H,25H DB 00H,29H,2CH,00H,31H,34H,37H,00H DB 3EH,41H,00H,49H,00H,52H,57H,00H DB 62H 。 廷時(shí)值在R4內(nèi) MOV R0,AXL2: MOV R1,03HDL1: NOP DJNZ R1,DL1 DJNZ R0,XL2 RET。=============================================================================== 。=============================================================================== 。 查表取出廷時(shí)參數(shù),保存到R4 MOV DPTR,DELAY_T MOVC A,A+DPTR MOV R4,A MOV A,R7 。=============================================================================== 。=== 歌曲播放子程序 ===SONG: MOV A,R2 。判斷按鍵是否松開 ANL A,0FH XRL A,0FH JNZ DK1A CLR TR0 NOKEY1: MOV P2,0FFH CLR MOV A,P2 ANL A,0FH XRL A,0FH JZ NOKEY2 LCALL DELY10MS MOV A,P2 ANL A,0FH XRL A,0FH JZ NOKEY2 MOV A,P2 ANL A,0FH CJNE A,0EH,NK5 MOV KEYBUF,4 LJMP DK2 NK5: CJNE A,0DH,NK6 MOV KEYBUF,5 LJMP DK2 NK6: CJNE A,0BH,NK7 MOV KEYBUF,6 LJMP DK2 NK7: CJNE A,07H,NK8 MOV KEYBUF,7 LJMP DK2 NK8: NOP DK2: MOV A,KEYBUF MOV DPTR,TABLE MOVC A,A+DPTR MOV P0,A MOV A,KEYBUF MOV B,2 MUL AB MOV TEMP,A MOV DPTR,TABLE1 MOVC A,A+DPTR MOV STH0,A MOV TH0,A INC TEMP MOV A,TEMP MOVC A,A+DPTR MOV STL0,A MOV TL0,A SETB TR0 DK2A: MOV A,P2 ANL A,0FH XRL A,0FH JNZ DK2A CLR TR0 NOKEY2: MOV P2,0FFH CLR MOV A,P2 ANL A,0FH XRL A,0FH JZ NOKEY3 LCALL DELY10MS MOV A,P2 ANL A,0FH XRL A,0FH JZ NOKEY3 MOV A,P2 ANL A,0FH CJNE A,0EH,NK9 MOV KEYBUF,8 LJMP DK3 NK9: CJNE A,0DH,NK10 MOV KEYBUF,9 LJMP DK3 NK10: CJNE A,0BH,NK11 MOV KEYBUF,10 LJMP DK3 NK11: CJNE A,07H,NK12 MOV KEYBUF,11 LJMP DK3 NK12: NOP DK3: MOV A,KEYBUF MOV DPTR,TABLE MOVC A,A+DPTR MOV P0,A MOV A,KEYBUF MOV B,2 MUL AB MOV TEMP,A MOV DPTR,TABLE1 MOVC A,A+DPTR MOV STH0,A MOV TH0,A INC TEMP MOV A,TEMP MOVC A,A+DPTR MOV STL0,A MOV TL0,A SETB TR0 DK3A: MOV A,P2 ANL A,0FH XRL A,0FH JNZ DK3A CLR TR0 NOKEY3: MOV P2,0FFH CLR MOV A,P2 ANL A,0FH XRL A,0FH JZ NOKEY4 LCALL DELY10MS MOV A,P2 ANL A,0FH XRL A,0FH JZ NOKEY4 MOV A,P2 ANL A,0FH CJNE A,0EH,NK13 MOV KEYBUF,12 LJMP DK4 NK13: CJNE A,0DH,NK14 MOV KEYBUF,13 LJMP DK4 NK14: CJNE A,0BH,NK15 MOV KEYBUF,14 LJMP DK4 NK15: CJNE A,07H,NK16 MOV KEYBUF,15 LJMP DK4 NK16: NOP DK4:
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