Discussion in "Project Help" started by    Bdavid    Oct 9, 2017.
Mon Oct 09 2017, 02:38 PM
#1
Hello,

This might be a beginner’s mistake but I am using an AT89C51, 2 rom chip, 2 ram chip, gal22v10, keypad, lcd, real time clock and temperature sensor. I was connected everything together using orcad schematic but I noticed that one side of my 8051 is stuck on the very first instructions I use. For example if I set port 1 or port 3 to 0 and try to switch it again to 1 it just stays on 0 and vice versa. Everything else works on the other side of the circuit.

Anyone knows why it is getting stuck on the first instruction even if I put it in a loop?

PS: my code is running from the eeprom.
Tue Oct 10 2017, 09:43 PM
#2
Are you simulating in Orcad ?
Please post your code and schematic. (zip and attach it to your next post)
Do your have a version of your project for Proteus ?

Wed Oct 11 2017, 01:54 AM
#3


Are you simulating in Orcad ?
Please post your code and schematic. (zip and attach it to your next post)
Do your have a version of your project for Proteus ?


ExperimenterUK



I used ORCAD schematic and I attached the files to this reply. Thanks
Attachment
Mon Oct 16 2017, 11:44 PM
#4
That looks complicated.
Is 8051_BLK a standard 8051 ?
You only posted the LCD asm file, not the main file(s).

Get Social

Information

Powered by e107 Forum System

Conversation

shshistiem
Thu Sep 13 2018, 04:28 AM
hii!! some1 please let me know how i ll get rfid code to 8051 by WEIGAND mode
DrNossberg
Wed Sep 12 2018, 01:39 AM
is there anyone here?
Mon Aug 27 2018, 01:00 PM
bun
Hello everyone!
Sat Jul 21 2018, 11:51 AM
Dibakar Bhanja Chowdhury
By using a 555 timer how can I expand the range of the mobile phone jammer? Please reply me asap
Sun May 20 2018, 03:31 PM
justinb
how to write and execute a program that read the keypad button and display the number on 7 segment on intel8051 at89s52 in assembly language?
Thu May 17 2018, 12:06 PM
HAMZA TAJ
sir iwant to ask about controller of three phase supply by using back to back thyristor instead of triac....will u give me some guideline?
Sat Apr 28 2018, 06:24 PM
ashutosh jain
IR Remote Switch using TV remote (RC5 Protocol) is not working properly. opp1 & opp2 is in problem.plz help
ExperimenterUK
Sat Apr 28 2018, 01:39 AM
@kaiserslautern Post in forum
Wed Apr 25 2018, 12:39 PM
kaiserslautern
Hello everyone, using software uart is a very good idea for a second serial port. Thank you so much. I would kindly like to know how to connect this port to the PC?
ExperimenterUK
Sun Apr 22 2018, 01:20 AM
This is a community site. Feel free to help anyone needing advice

Downloads

Comments

PCBindex
Fri Sep 14 2018, 02:45 AM
sirkit
Thu Sep 13 2018, 04:46 AM
shshistiem
Wed Sep 12 2018, 10:36 PM
DrNossberg
Tue Sep 11 2018, 03:25 PM
ranjanvh
Thu Sep 06 2018, 02:28 PM
rbbhamre
Tue Sep 04 2018, 06:15 PM
Tressie
Sun Sep 02 2018, 02:20 PM
Sudhansudeep
Fri Aug 31 2018, 08:26 AM

Online

Guests: 56, Members: 0 ...

most ever online: 182184
(Members: , Guests: 182184) on 06 Aug 2010: 05:37 AM

Members: 38006
Newest member: PCBindex
Forum Activity
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Sep 13 2018, 08:39 PM
First of all, by reading your reply, I abandoned m...
DrNossberg Avatar
Posted By DrNossberg
Thu Sep 13 2018, 03:49 PM
Hi, thanks you for your reply ^^ First of all, by ...
ExperimenterUK Avatar
Posted By ExperimenterUK
Wed Sep 12 2018, 12:12 AM
HiThere are several issues here.The original 8051 ...
DrNossberg Avatar
Posted By DrNossberg
Tue Sep 11 2018, 08:08 PM
Hello everybody!First of all let me explain some s...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Sep 07 2018, 05:08 AM
The compiler thinks the micro doesn't have enough...
Sudhansudeep Avatar
Posted By Sudhansudeep
Fri Sep 07 2018, 02:59 AM
this is the build output message
Sudhansudeep Avatar
Posted By Sudhansudeep
Fri Sep 07 2018, 01:38 AM
Change the mobile number as [number removed] in t...
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Sep 06 2018, 08:56 PM
I don't know what the problem is, I get no errors....
Sudhansudeep Avatar
Posted By Sudhansudeep
Thu Sep 06 2018, 01:12 PM
the code is Attachment ...
Sudhansudeep Avatar
Posted By Sudhansudeep
Thu Sep 06 2018, 12:48 PM
the code is same as u sent me for 16 chars