It's a programm for automatic water pump controller cum motor Protector and need to change the 10 minute dry running condition to 5 minute.I made it and its working now.i don't know I can post external link here.
I want to edit a at89c51 program and I am a total noob to microcontrollers.
- Thread starter sabareeshchambayil
- Start date
Is the chip soldered to the board or sitting in a chip holder on the board?
If it is in the holder, the easiest thing to do is to get the second chip, program it using whatever programming device you have/can buy/can build, then pull old chip out, insert new chip in.
If it is in the holder, the easiest thing to do is to get the second chip, program it using whatever programming device you have/can buy/can build, then pull old chip out, insert new chip in.
Sorry for my mistake.I forgot to mention.
I know how to programm a microcontroller.(My friend has programmer)
I need to edit the programm thats I am asking.
And I have 3 files of the programm(.LST , .asm , .hex).
I know hex is for burning to microcontroller
I know how to programm a microcontroller.(My friend has programmer)
I need to edit the programm thats I am asking.
And I have 3 files of the programm(.LST , .asm , .hex).
I know hex is for burning to microcontroller
The programmer can write the .hex into the 8051, the other as .tsk.
If you have x8051.exe and link.exe files then do these in the Dos prompt.
1. x8051 spk.asm -d
2. link -c spk.obj -x
TS Controls Emulator 8051.
If you have x8051.exe and link.exe files then do these in the Dos prompt.
1. x8051 spk.asm -d
2. link -c spk.obj -x
TS Controls Emulator 8051.
Asm file attached
The below is what I compiled and the errors.
I'm not sure which compiler you like to use?
I'm not sure which compiler you like to use?
Code:
8051 Macro Assembler Copyright (C) 1990 by 2500AD Software Inc. Version 5.00b
DOS/16M Run-Time Copyright (C) 1987-89 by Rational Systems, Inc. Version 3.88
***** Active Commands *****
Ctrl S = Stop Output
Ctrl Q = Start Output
Esc C = Stop Assembly
Esc T = Terminal Output
Esc P = Printer Output
Esc D = Disk Output
Esc M = Multiple Output
Esc N = No Output
2 0000 $MOD51
***** Waternew.asm : Line 2 *****
***** ILLEGAL MNEMONIC *****
2500 A.D. 8051 Macro Assembler - Version 5.00b
------------------------------------------------
Input Filename : Waternew.asm
Output Filename : Waternew.obj
2 0000 $MOD51
***** Waternew.asm : Line 2 *****
***** ILLEGAL MNEMONIC *****
451 0773 30 A4 88 JNB P2.4, 0788H ;STILL H/V THEN GOTO 0788 H
***** Waternew.asm : Line 451 *****
***** RELATIVE JUMP TOO LARGE *****
454 077B 30 A3 8B JNB P2.3, 078BH ;STILL L/V THEN GOTO 078B H
***** Waternew.asm : Line 454 *****
***** RELATIVE JUMP TOO LARGE *****
457 0783 30 A1 8E JNB P2.1, 078EH ;STILL NOT DRY SUMP THEN GOTO 078E H
***** Waternew.asm : Line 457 *****
***** RELATIVE JUMP TOO LARGE *****
Lines Assembled : 465 Assembly Errors : 4
I can't under stand anything.This project is in EFY in the name "Water level controller cum Motor Protector"
The 3 errors are due to 0788H, 078BH & 078EH have no corresponding labels. But that's easy to fix.
Code:
L770: LCALL DLY_2SEC ;WAIT FOR 2 SECONDS
JNB P2.4, L0788H ;STILL H/V THEN GOTO 0788 H <-(1)
SJMP L764 ; NOT H/V THEN GOTO 0764 H
L778: LCALL DLY_2SEC ;WAIT FOR 2 SECONDS
JNB P2.3, L078BH ;STILL L/V THEN GOTO 078B H <-(2)
SJMP L767 ;NOT L/V THEN GOTO 0767 H
L780: LCALL DLY_2SEC ;WAIT FOR 2 SECONDS
JNB P2.1, L078EH ;STILL NOT DRY SUMP THEN GOTO 078E H <-(3)
SJMP L76A ;OTHERWISE GOTO 076A
L0788H: CLR 77H ;CLEAR FLAG 77H FOR H/V <-(4)
RET
L078BH: CLR 78H ;CLEAR FLAG 78H FOR L/V <-(5)
RET
L078EH: CLR 76H ;CLEAR FLAG 76H FOR DRY SUMP CHECK <-(6)
RET
Allen
Last edited:
Yes this is it.In this water pump stops when water level is not reached the 2nd float switch or sensor with in 10 minutes the controller go to dry sump1 and then rest for 5 minutes.
I want to change that 10 minute to 5 minutes.
I want to change that 10 minute to 5 minutes.
Sorry for late reply.The hex file from the EFY website is what I burned to At89s51.I have made no modification, And I need to know what are the softwares and how I can study coding for microcontroller.Before that can anybody attach the new hex file and asm file created without errors and timer to 5 minutes.
What are the softwares you have used.I need to try it to create hex.
Hi Scottwang i am now using the hex file you generated and my friend requested me to make the same water pump controller for him, but he needs the timer value to 1 minute .
I tried changing the programm from orginal source by placing 1 minute instead of 10 minutes in Lines
77
332
389
And i got undeclared error in keil uvision5 and i again checked the program and found one more 10 min timer in Line 431 and changed that to 1minute and there's no error and generated hex file and burned to At89S51 but its still 10 minutes timer working
What's the mistake i am making?
Please help
The answer to those types of questions should always be the same: then become more experienced.
anyone providing you with a finished product is impeding your learning and not doing you any favor over the long run.
Moderators note : reduced font size and bold, as large bold fonts look like shouting
Last edited by a moderator:
If you don't know about the uC, you better not to do anything for your friend, because the uC is a hard work, it needs hardware and software conceptions and knowledges, the best way is that you go to study the uC and when you have any problems then you can ask for help.
I was copied DLY_2MIN to DLY_1MIN and modified the values of R2, and R3.
you can try it, probably it needs to modify the R4 a little, I also modified the first line of the LOOP program from LCALL TMR_5MIN to LCALL DLY_1MIN.
==========================================
I was copied DLY_2MIN to DLY_1MIN and modified the values of R2, and R3.
you can try it, probably it needs to modify the R4 a little, I also modified the first line of the LOOP program from LCALL TMR_5MIN to LCALL DLY_1MIN.
Code:
;-----------------------------------------------
LOOP:
LCALL DLY_1MIN ;CALL 1 MIN. TIMER
JNB 78H,L3 ;L/V THEN GOTO 018B H
JNB 77H,L2 ;H/V THEN GOTO 0136 H
JB 76H,L5 ;DRY SUMP THEN GOTO 0188 H
JB P2.2,$ ;WAIT UNTIL TANK FULL
LOOP1:
LJMP TANK_FULL ;GOTO TANK FULL DISPLAY
Code:
;------------------------- ORG 05xxH ---------------------------------
ORG 05xxH
DLY_1MIN:
MOV R2,#07FH
L502:
MOV R3,#07FH
L504:
MOV R4,#0FFH
L506:
NOP
NOP
NOP
NOP
DJNZ R4, L506
DJNZ R3, L504
DJNZ R2, L502
RET ;BACK TO MAIN PROGRAMME
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