基于單片機(jī)的音樂播放器(編輯修改稿)
2024-07-24 20:24 本頁面
【文章內(nèi)容簡(jiǎn)介】 A JZ MUSIC2 DEC A JZ MUSIC3 SJMP KEYCHECK MUSIC1: LCALL XIAN LCALL DELAY0 MOV DPTR,TONE1 LCALL LOP SJMP MUSIC1MUSIC2: LCALL XIAN LCALL DELAY0 MOV DPTR,TONE2 LCALL LOP SJMP MUSIC2MUSIC3: LCALL XIAN LCALL DELAY0 MOV DPTR,TONE3 LCALL LOP SJMP MUSIC3LOP: CJNE R1,00H,LOOP5 。判斷是否播放 CLR CLR TR1 CJNE R7,01H,LOOP4 。暫停過程中的標(biāo)識(shí)符判斷 MOV R7,00H SJMP KEYCHECKLOOP4: LJMP LOPLOOP5: SETB MOV A,0 MOVC A,@A+DPTR JZ QUIT CJNE A,01H,LOOP6 CLR TR1 INC DPTR LJMP LOOP7LOOP6: MOV R5,A MOV TH1,A INC DPTR MOV A,0 MOVC A,@A+DPTR MOV R6,A MOV TL1,R6 SETB TR1LOOP7: INC DPTR MOV A,0 MOVC A,@A+DPTR MOV R2,ALOOP1: MOV R3,80HLOOP2: MOV R4,0FFHLOOP3: DJNZ R4,LOOP3 DJNZ R3,LOOP2 DJNZ R2,LOOP1 INC DPTRLOOP8: CJNE R7,01H,GOON 。播放中的標(biāo)識(shí)符判斷 MOV R7,00H SJMP KEYCHECKGOON: LJMP LOPQUIT: RETTIMER1: PUSH DPH 。定時(shí)器1中斷子程序 PUSH DPL PUSH ACC CPL MOV TH1,R5 MOV TL1,R6 SETB TR1 POP ACC POP DPL POP DPH RETIDELAY0: MOV R2,10DELAY3: MOV R3,200DELAY2: MOV R4,125DELAY1: DJNZ R4,DELAY1 DJNZ R3,DELAY2 DJNZ R2,DELAY3 RETSUM: CJNE R0,01H,SUM1 。上一曲INT0中斷子程序 MOV R0,04HSUM1: DEC R0 INC R7 RETIDUM: CJNE R0,03H,DUM1 。下一曲INT1中斷子程序 MOV R0,00HDUM1: INC R0 INC R7 RETIBOF: INC R1 。播放暫停T0子程序 CJNE R1,02H,BOF1 MOV R1,00H RE
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