基于單片機(jī)的脈沖寬度測量

利用單片機(jī)測量mc6c遙控器各通道輸出信號的脈寬

;P3.2->INTURRUPT0 0亮1滅 TH0->R0,TL0->R1, R7延時 R2,R3,R4,R5 ORG 0000H LJMP 0030HORG 0003H INTURRUPT0: MOV R0,TH0 MOV R1,TL0 MOV TH0,#00H MOV TL0,#00H RETIORG 000BH TIMER0: MOV TH0,#00H MOV TL0,#00H RETIORG 0030H INIT_T0: MOV TMOD,#09H MOV TH0,#00H MOV TL0,#00H SETB ET0 SETB TR0INIT_INT0: SETB IT0 SETB EX0 SETB EAMOV R0,#00H MOV R1,#00HMAIN:LCALL TRANSFERSETB P2.7MOV P0,#00111101B CLR P2.7SETB P2.6MOV P0,R2ACALL DELAYSETB P2.7MOV P0,#00111011B CLR P2.7SETB P2.6MOV P0,R3ACALL DELAYSETB P2.7MOV P0,#00110111B CLR P2.7SETB P2.6MOV P0,R4ACALL DELAYSETB P2.7MOV P0,#00101111B CLR P2.7SETB P2.6MOV P0,R5ACALL DELAYLJMP MAINTRANSFER: MOV A,#0FH ANL A,R0 MOV DPL,A MOV DPH,#00H MOV A,#TABLE MOVC A,@A+DPTR MOV R3,AMOV A,#0F0H ANL A,R0 SWAP A MOV DPL,A MOV DPH,#00H MOV A,#TABLE MOVC A,@A+DPTR MOV R2,AMOV A,#0FH ANL A,R1 MOV DPL,A MOV DPH,#00H MOV A,#TABLE MOVC A,@A+DPTR MOV R5,AMOV A,#0F0H ANL A,R1 SWAP A MOV DPL,A MOV DPH,#00H MOV A,#TABLE MOVC A,@A+DPTR MOV R4,A RETIDELAY: MOV R7,#0FFHDJNZ R7,$ ;若為0程序向下執(zhí)行，若不為0程序跳轉(zhuǎn)到MOV R7,#0FFHDJNZ R7,$RETTABLE: DB 3FH, 06H, 5BH, 4FH, 66H, 6DH, 7DH, 07H, 7FH, 6FH, 77H, 7CH, 39H, 5EH, 79H, 71H END

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