基于單片機(jī)的電子琴實(shí)驗(yàn)(編輯修改稿)
2024-12-22 19:48 本頁面
【文章內(nèi)容簡(jiǎn)介】 PTR 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,P3 ANL A,0FH XRL A,0FH JNZ DK2A CLR TR0 NOKEY2: MOV P3,0FFH CLR MOV A,P3 ANL A,0FH XRL A,0FH JZ NOKEY3 LCALL DELY10MS MOV A,P3 ANL A,0FH XRL A,0FH JZ NOKEY3 MOV A,P3 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,P3 ANL A,0FH XRL A,0FH JNZ DK3A CLR TR0 NOKEY3: MOV P3,0FFH CLR MOV A,P3 ANL A,0FH XRL A,0FH JZ NOKEY4 LCALL DELY10MS MOV A,P3 ANL A,0FH XRL A,0FH JZ NOKEY4 MOV A,P3 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: 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 DK4A: M
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鄂ICP備17016276號(hào)-1