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Forum Index : Microcontroller and PC projects : sensors or devices with SPI interface?

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Justplayin

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Joined: 31/01/2014
Location: United States
Posts: 328
Posted: 05:05pm 25 Jul 2021
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Checkout this thread using the MAX7219 and 8*8 Matrix modules I played with a few years ago.  The links to the videos are still valid.

--Curtis
I am not a Mad Scientist...  It makes me happy inventing new ways to take over the world!!
 
lizby
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Joined: 17/05/2016
Location: United States
Posts: 3378
Posted: 05:27pm 25 Jul 2021
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  Justplayin said  Checkout this thread using the MAX7219 and 8*8 Matrix modules

Thanks for that. The code is helpful.
Edited 2021-07-26 03:27 by lizby
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vegipete

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Joined: 29/01/2013
Location: Canada
Posts: 1132
Posted: 02:36am 26 Jul 2021
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  Justplayin said  Checkout this thread using the MAX7219 and 8*8 Matrix modules

Good reminder. I just threw your program at my CMM2, with a few minor things commented out and the CS pin changed for my wiring and it just works. Scrolling text appears. Well, my 8x8 modules are turned 90 degrees, so the text is sideways, but that is a data issue, the SPI port works fine. Quite painless!
Visit Vegipete's *Mite Library for cool programs.
 
Justplayin

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Joined: 31/01/2014
Location: United States
Posts: 328
Posted: 05:00am 26 Jul 2021
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  vegipete said  
Good reminder. I just threw your program at my CMM2, with a few minor things commented out and the CS pin changed for my wiring and it just works. Scrolling text appears. Well, my 8x8 modules are turned 90 degrees, so the text is sideways, but that is a data issue, the SPI port works fine. Quite painless!


I was fairly sure that version would work with very little modification since it is written entirely in MMBasic.  The current version (not posted) contains CFunctions to output to the SPI which wouldn't work on the newer mites.

As for the 90 degree rotation, I did that because it is MUCH easier to scroll the display with each byte displayed vertically.

--Curtis
I am not a Mad Scientist...  It makes me happy inventing new ways to take over the world!!
 
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