多用途无线呼叫系统的研发(毕业设计)接收程序源.doc

;this isbuf1 equ 20hbuf2 equ 21hbuf3 equ 22hbuf4 equ 23h ORG 0000H LJMP START ORG 0003H LJMP MINT0 ORG 000BH LJMP TIME0 ORG 0013H LJMP MINT1 ORG 001BH LJMP TIME1 ORG 0100HSTART: NOP ; MOV P3,#00H MOV R0, #55h MOV R1, #0 LOP: nop DJNZ R0, LOPstart1: nop clr p3.5 nop clr it0 setb ea setb ex0 jmp $ ;中断程序;T0中断 TIME0: NOp out: RETI;T1中断 TIME1: NOP retiout: RETI;外中断0MINT0: NOP mov a, p1 swap a anl a ,#00001111b cjne a,#00001111b,st1 lcall delay100ms lcall delay10ms lcall delay1ms mov a,p1 anl a,#11110000b mov buf1,a lcall delay100ms lcall delay10ms lcall delay1ms mov a,p1 swap a anl a,#00001111b orl a,buf1 mov buf2,a lcall delay100ms lcall delay10ms lcall delay1ms mov a,p1 anl a,#11110000b mov buf3,a lcall delay100ms lcall delay10ms lcall delay1ms mov a,p1 swap a anl a,#00001111b orl a,buf1 mov buf4,a lcall delay100ms lcall delay10ms lcall delay1ms mov a,p1 anl a,#11110000b cjne a,#00000000b, st mov a,buf2 cjne a,buf4,st setb p3.5 ljmp st st1: nop cjne a,#00000000b,st lcall delay100ms lcall delay10ms lcall delay1ms mov a,p1 anl a,#11110000b mov buf1,a lcall delay100ms lcall delay10ms lcall delay1ms mov a,p1 swap a anl a,#00001111b orl a,buf1 mov buf2,a lcall delay100ms lcall delay10ms lcall delay1ms mov a,p1 anl a,#11110000b mov buf3,a lcall delay100ms lcall delay10ms lcall delay1ms mov a,p1 swap a anl a,#00001111b orl a,buf1 mov buf4,a lcall delay100ms lcall delay10ms lcall delay1ms mov a,p1 anl a,#11110000b cjne a,#11110000b, st mov a,buf2 cjne a,buf4,st clr p3.5 st: nop RETIMINT1: NOP RETI DELAY1: MOV R1, #0c0H DEL11: NOP NOP DJNZ R1, DEL11 RETDELAY1MS:MOV R4,#2;延时1MSD1:MOV R5,#248DJNZ R5,$DJNZ R4,D1 RETDELAY10MS:MOV R4,#20;延时10MSD2:MOV R5,#248DJNZ R