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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