Discussion in "8051 Discussion Forum" started by    [email protected]    Oct 5, 2019.
Sat Oct 12 2019, 02:45 AM
#11
Okay I got it !
Data is not automatically passed onto the next chip,
you have to push it through.

To display on the second MAX7291
send your 16 bits as usual, but do not raise "LOAD" at the end of SEND_D:
Push those 16 to bits to the second chip by sending any 8bits to the NO-OP register (00)
Then raise "LOAD".

You should remove the startup code from your project, it is only
needed for 'c' programs


Sat Oct 12 2019, 06:44 AM
#12
Sir, Please share code, i m unable to scroll message on second dot matrix.
Sat Oct 12 2019, 10:19 PM
#13
This code does not scroll, that will be complicated,
but it does write to the 2nd display.

What is do you want your project to do.
Does it display a fixed message, or should it be variable ?

Your characters display sideways, is that intended ?


Attachment


[ Edited Sun Oct 13 2019, 02:34 AM ]
Sun Oct 13 2019, 06:10 PM
#14
This code does some scrolling.
You will need to fine tune a bit, but it should be a good start.

Attachment
Wed Oct 16 2019, 07:13 AM
#15
message scroll vertically, please share code.


[ Edited Wed Oct 16 2019, 07:37 AM ]
Wed Oct 16 2019, 07:38 AM
#16
Wed Oct 16 2019, 09:58 PM
#17
What do you mean by
"message scroll vertically" ?

Please explain fully.
Thu Oct 17 2019, 09:30 AM
#18
i want to scroll message more than 2 dot matrix display.

please share code.
Thu Oct 17 2019, 08:35 PM
#19
Do you understand how this code works?

If so, adding more displays will be easy, if not ,ask for an explanation.


Attachment


[ Edited Thu Oct 17 2019, 08:44 PM ]
Thu Oct 17 2019, 09:38 PM
#20
please explain,

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ExperimenterUK
Sat Oct 12 2019, 10:23 PM
Log in.. then post your code in the 8051 forum
Sat Oct 12 2019, 10:18 AM
Bhadra Sajikumar
i am doing a countdown timer with 8051 for my project, unfortunately our professor had to take a leave of absence before he could teach us most of it.. can someone explain the .asm code of it for me?
Mon Sep 23 2019, 07:37 AM
Nathaniel
I am doing a project for my schools wireless security system with cameras,sensors and spot lights using 8051 micro controller, could you help me out with the design and its source code.
Wed Sep 18 2019, 08:48 PM
Caryn Kover
Thank you for your time,
ExperimenterUK
Mon Aug 05 2019, 07:09 PM
@Ismail ..post in forum, give details
Mon Aug 05 2019, 04:33 PM
Ismail balghmi
Hello. Please I won't download
ExperimenterUK
Wed Jul 24 2019, 12:47 AM
@BUSTER123 Please post in the forum
Tue Jul 23 2019, 06:13 PM
BUSTER123
hello! newbie here. i am kind of a guy who hates using ready - made existing libraries, so this helped a lot as i was trying to control and write to a character lcd display. however, i can't figure out how to set the cursor position. for example, i want to set it to the 5th column in the first row, so position 5. so according to the table, i am sending 10000101 on the 8 data lines of the lcd (register select pulled low). the cursor does not move there however. and i cant move the cursor left or right too. is it something wrong that i am doing? thank you.
ExperimenterUK
Thu Jul 11 2019, 07:55 PM
@ramos https://www.theengineeringprojects.com/2017/09/l298-motor-driver-library-proteus.html
ExperimenterUK
Thu Jul 11 2019, 07:44 PM
@praveen123. Can you give a link to the project ?

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Mon Nov 18 2019, 09:54 AM
0v7670 camera interfacing with stc 8051.using asse...
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Sun Nov 10 2019, 04:43 AM
ty, really needed it
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Mon Oct 21 2019, 09:18 AM
I’ve been following this thread and looking at the...
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Posted By [email protected]
Sun Oct 20 2019, 03:02 PM
sir, when i on display ,sometime 3rd display is no...
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Posted By [email protected]
Sun Oct 20 2019, 02:53 PM
sir, when i on display ,sometime 3rd display is no...
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Sun Oct 20 2019, 12:21 AM
Your code seems okay on my simulationTry my code o...
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Posted By [email protected]
Sat Oct 19 2019, 07:13 PM
please find video attachment. 3rd & 4th displa...
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Posted By [email protected]
Sat Oct 19 2019, 07:05 PM
sir, 3rd and 4th dot matrix display flickering, ...