單片機課程設計_步進電機控制(文件)
【正文】 00BH AJMP ZDT0 ORG 0030H MAIN:MOV SP,60H MOV TMOD,01H MOV TH0,0CFH MOV TL0,2CH MOV COUNT,01H SETB ET0 CLR IT0 CLR IT1 SETB EX0 SETB EX1 SETB EA MOV R1,11H MOV SPEED,00H MOV FX,00H XIANS:MOV A,SPEED MOV DPTR,LED MOVC A,A+DPTR MOV P2,A MOV A,FX CJNE A,11H,ELS MOV P0,0F9H AJMP QD ELS:CJNE A,00H,ZHENG MOV P0,0C0H AJMP QD ZHENG:MOV P0,0BFH QD: JB ,DD CLR TR0 MOV P0,0C0H MOV P2,0C0H MOV SPEED,00H MOV FX,00H AJMP QD DD:MOV A,SPEED JNZ GO CLR TR0 AJMP QD GO:SETB TR0 ACALL DELAY AJMP XIANS DELAY:MOV R6,10 DEL1:MOV R7,250 HERE1:DJNZ R7,HERE1 DJNZ R6,DEL1 RET ZDT0:PUSH ACC PUSH DPH PUSH DPL MOV TH0,0D8H MOV TL0,0F0H DJNZ COUNT,EXIT JB ,NIZHUAN MOV FX,11H NIZHUAN:MOV A,FX CJNE A,11H,FZ MOV A,R1 MOV P1,A RR A MOV R1,A MOV P1,A AJMP RE FZ:MOV A,R1 MOV P1,A RL A MOV P1,A MOV R1,A RE: MOV A,SPEED MOV DPTR,TAB MOVC A,A+DPTR MOV COUNT,A JB ,FFX MOV FX,11H AJMP EXIT FFX:MOV FX,0FEH EXIT:POP DPL POP DPH POP ACC RETI UP:PUSH ACC ACALL DELAY JB ,UPEX MOV A,SPEED CJNE A,7,SZ AJMP UPEX SZ:INC SPEED UPEX:POP ACC HERE2:JNB ,HERE2 RETI DOWN:PUSH ACC ACALL DELAY JB ,DEX MOV A,SPEED CJNE A,0,SJ AJMP DEX SJ:DEC SPEED DEX: POP ACC HERE3:JNB ,
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鄂ICP備17016276號-1