??? 02/21/04 17:40 Read: times |
#65273 - RE: help please Responding to: ???'s previous message |
Hi Mohamed.
I reformatted your code so that it is more readable. Your first instruction is incorrect in that it should be a jump (JMP START) rather than a call (LCALL START) instruction. You are also missing a loop after your initialization. Your program fails at that point. You also need to add comments to the program so that others can understand what it is doing Regards, Charles Bannister ORG 0000H LCALL START ;; Should be LJMP START here -cb ORG 0003H LJMP ISR2 ORG 000BH LJMP DEBOUNCE ORG 0013H LJMP ISR ORG 0050H ISR2: CLR EX0 MOV TL0,#00H MOV TH0,#00H SETB TR0 MOV A,R1 INC A MOV R1,A RANGE2:CJNE R1,#01H,RANGE3 SETB P3.5 CLR P3.6 CLR P3.7 LJMP ER2 RANGE3:CJNE R1,#02H,RANGE4 CLR P3.5 SETB P3.6 CLR P3.7 LJMP ER2 RANGE4:CJNE R1,#03H,RANGE5 SETB P3.5 SETB P3.6 CLR P3.7 LJMP ER2 RANGE5:CJNE R1,#04H,RANGE6 CLR P3.5 CLR P3.6 SETB P3.7 LJMP ER2 RANGE6:CJNE R1,#05H,RANGE7 SETB P3.5 CLR P3.6 SETB P3.7 LJMP ER2 RANGE7:CJNE R1,#06H,RANGE8 CLR P3.5 SETB P3.6 SETB P3.7 LJMP ER2 RANGE8:CJNE R1,#07H,RANGE1 SETB P3.5 SETB P3.6 SETB P3.7 LJMP ER2 RANGE1:CJNE R1,#08H,RANGE2 MOV A,#00H MOV R1,A CLR P3.5 CLR P3.6 CLR P3.7 LJMP ER2 ER2: RETI ORG 0250H DEBOUNCE: CLR TF0 CLR TR0 JNB EX1, STEX1 JNB EX0,STEX0 STEX1: SETB EX1 LJMP ER3 STEX0: SETB EX0 LJMP ER3 ER3: RETI ORG 0350H ISR: CLR EX1 MOV TL0,#00H MOV TH0,#00H SETB TR0 MOV A,R0 INC A MOV R0,A SINE: CJNE R0,#01H,TRIANGLE CLR P1.0 SETB P1.1 LJMP ER1 TRIANGLE:CJNE R0,#02H,SQUARE SETB P1.0 CLR P1.1 LJMP ER1 SQUARE: CJNE R0,#03H,SINE MOV A,#00H MOV R0,A CLR P1.0 CLR P1.1 LJMP ER1 ER1: RETI ORG 0500H START: MOV R0,#00H MOV R1,#00H MOV SP,#02FH MOV IE,#087H MOV TMOD,#01H MOV IP,#07H SETB IT1 SETB IT0 ;; This part of program requires a loop ;; loop1: ... ;; ... ;; loop2: SJMP LOOP1 END |
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