直流电机程序清单.docx

三、软件设计START: CLR P2.5 MOV 70H,#00H SETB P2.4 ;电机正转LOOP0: MOV R1,#00H ;正转加速程序 MOV R2,#8FH L01: SETB P2.6 MOV A,R1 CJNE A,70H,INC0 L02: CLR P2.6 MOV A,R2 CJNE A,70H,DEC0 SJMP L0INC0: INC R1 LCALL DELAY SJMP L01DEC0: DEC R2 LCALL DELAY LCALL DELAY LCALL DELAY SJMP L02L0: INC 70H MOV R5,70H CJNE R5,#8FH,LOOP0 MOV 70H,#8FH ;正转减速程序LOOP1: MOV R1,#00H MOV R2,#0FFH L11: SETB P2.6 MOV A,R1 CJNE A,70H,INC1 L12: CLR P2.6 MOV A,R2 CJNE A,70H,DEC1 SJMP L1INC1: INC R1 LCALL DELAY SJMP L11DEC1: DEC R2 LCALL DELAY LCALL DELAY SJMP L12L1: DEC 70H MOV R5,70H CJNE R5,#01H,LOOP1 SETB P2.5 LCALL DEY CLR P2.5 MOV 70H,#00H ;电机反转 CLR P2.4LOOP2: MOV R1,#00H ;反转加速程序 MOV R2,#8FH L21: SETB P2.6 MOV A,R1 CJNE A,70H,INC2 L22: CLR P2.6 MOV A,R2 CJNE A,70H,DEC2 SJMP L2INC2: INC R1 LCALL DELAY SJMP L21DEC2: DEC R2 LCALL DELAY LCALL DELAY LCALL DELAY SJMP L22L2: INC 70H MOV R5,70H CJNE R5,#8FH,LOOP2 LCALL DELA ;反转加速到一定值，延时 MOV 70H,#08FH ;反转减速程序LOOP3: MOV R1,#00H MOV R2,#0FFH L31: SETB P2.6 MOV A,R1 CJNE A,70H,INC3 L32: CLR P2.6 MOV A,R2 CJNE A,70H,DEC3 SJMP L3INC3: INC R1 LCALL DELAY SJMP L31DEC3: DEC R2 LCALL DELAY LCALL DELAY SJMP L32L3: DEC 70H MOV R5,70H CJNE R5,#01H,LOOP3 SETB P2.5 LCALL DEY LJMP START DELAY: MOV R6,#5 ;延时程序 DELAY1: MOV R7,#10 DJNZ R7,$ DJNZ R6,DELAY1 RET DELA: MOV R6,#200 ;延时程序 DELA1: MOV R7,#200 DJNZ R7,$ DJNZ R6,DELA1 RET DEY: MOV R4,#20 DEY1: MOV R6,#