【正文】 ORG 0000H SJMP STAR ORG 0003H AJMP INTR0 ORG 0010H MOV 22H,00H MOV 23H,0FCH MOV R0,0FFH STAR: MOVX DPTR,0FC00H MOV R7,0FFH] MOV A,00H LOOP: MOVX DPTR,A INC DPTR INC A DJNZ R7,LOOP MOV DPTR,0FEF8H MOV A,0C2H MOVX DPTR,A MOV DPTR,0FEFCH MOV A,88H MOVX DPTR,A INC DPTR MOV A,93H MOVX DPTR,A MOV IE,81H SETB IT0 模糊控制電機軟啟動 20 INT0 中斷服務程序：（由 0003H 來） INTR0: MOV DPTR,0FEF8H MOV A,0C2H MOVX DPTR,A MOV DPTR,0FEFCH MOV A,88H MOVX DPTR,A INC DPTR, MOV A,93H MOVX DPTR,A MOV DPH,23H MOV DPL,22H MOVX A,DPTR MOV DPTR,0FEFA MOV DPTR,A INC R0 CJNE R0,0FFH,EXIT MOV 22H,00H 0809 采用中斷方式巡回檢測一遍模擬量輸入，并將采集的數(shù)據(jù)依次存入片外數(shù)據(jù)存儲器 A0H~A7H 單元，其初始化程序和中斷服務程序如下： 初始化程序： ORG 0000H SJMP STAR ORG 0013H AJMP INTR1 STAR: MOV R0,0A0H MOV R2,08H SETB IN1 SETB EA SETB EX1 MOV DPTR,0FEF8H READ1: MOVX DPTR,A 模糊控制電機軟啟動 21 HERE: SJMP HERE DJNZ R2,READ1 ?? 中斷服務程序： INTR1: MOVX A,DPTR MOVX R0,A INC DPTR INC R0 RET1 其他程序段： 缺相保護專用計算子程序 ZD00: MOV A,DPL L_1222: MOVX DPTR,A NOP NOP NOP SETB NOP L_1229: MOV A,P1 NOP NOP JNB ,L_1229 NOP L_1231: NOP MOVX A,DPTR CLR C SUBB A,80H 模糊控制電機軟啟動 22 JNC L_123A CPL A INC A L_123A: CLR C SUBB A,79H JNC L_1244 SETB F0 RET RET NOP L_1244: CLR F0 RET RET 過流保護專用計算子程序： GL00: MOV A,DPL MOVX DPTR,A SETB NOP NOP L_124F: MOV A,P1 JNB ,L_124F MOVX A,DPTR CLR C SUBB A,5DH JNC L_125E CLR F0 RET RET 模糊控制電機軟啟動 23 L_125E: SETB F0 RET RET NOP NOP L_1264: LJMP L_10E5 NOP L_1268: LJMP ERA NOP PGTO: CLR CLR TF0 JNB ,L_1275 RETI RETI L_1275: NOP JNB ,L_1264 PUSH DPL PUSH DPH PUSH ACC L_127F: PUSH PSW INC 44H MOV A,44H CLR C SUBB A,0AH JC L_128C SETB L_128C: 模糊控制電機軟啟動 24 MOV A,44H CLR C SUBB A,04H JC L_1299 CLR 66H CLR 67H SETB L_1299: MOV A,44H CLR C SUBB A,17H JC L_12A2 SETB L_12A2: MOV A,44H CLR C SUBB A,2EH JC L_12AB SETB L_12AB: MOV A,44H CLR C SUBB A,3DH JC L_12B4 SETB L_12B4: MOV A,44H CLR C SUBB A,4CH JC L_12BD SETB 5CH L_12BD: MOV A,44H 模糊控制電機軟啟動 25 CLR C SUBB A,7AH JC L_12C6 SETB 68H L_12C6: MOV A,44H CLR C SUBB A,0E5H JC L_12CF SETB 5FH L_12CF: MOV DPTR,EFFFH MOVX A,DPTR JB ,L_12E2 MOV A,44H CLR C SUBB A,5CH JC L_12EB SETB LJMP L_12EB L_12E2: MOV A,44H CLR C SUBB A,0F5H JC L_12EB SETB L_12EB: NOP POP PSW POP ACC POP DPH POP DPL RETI 模糊控制電機軟啟動 26 RETI LJMP ERA NOP L_12FA: NOP PUSH ACC PUSH PSW PUSH DPH PUSH DPL PUSH 30H NOP NOP L_1307: NOP NOP NOP NOP L_130B: NOP MOV 30H,00H NOP L_1310: NOP L_1311: DJNZ 30H,L_1311 NOP L_1315: NOP SETB CLR NOP NOP POP 30H 模糊控制電機軟啟動 27 POP DPL POP DPH POP PSW POP ACC RETI RETI LJMP ERA NOP L_132C: NOP PGINT1: NOP CLR EX1 CLR IE1 JB ,L_138A PUSH ACC PUSH PSW PUSH DPL PUSH DPH CLR RS0 SETB RS1 INC R3 JNB 3CH,L_1374 MOV A,6AH CLR C SUBB A,R2 JNC L_