MAX7219 32x32 LED Display

[kaqkk007]

Thank you, I'll take a look

[kaqkk007]

With a few minor tweaks, it'll turn out just the way I imagined. Thanks so much for all your help!

[mnfisher]

That's good news... Please let us know how it goes or if you have any other questions....

Martin

[kaqkk007]

That's all he knows so far

[mnfisher]

Looks good

[kaqkk007]

https://youtu.be/OYZQdaD63k8 Here's how the test version works

[mnfisher]

Cool.

Take a look at the max7219 component (link above) for some fancy 'reveals' too....

Martin

[kaqkk007]

Is it possible that the display is interfering with the RTC's operation? I'm using the display on Channel 1 and the DS3231 on pins RB0 and RB1. It reads and displays the values, but I can't configure the RTC.

[mnfisher]

I think the issue is that you are calling RTC nearly 20,000 timer per second.

I would try and move the RTC setting to outside of the interrupt handler (possibly set a flag in the interrupt handler 'set_clock') and test this in main - or set an interrupt on the button presses and test for this in main)

I'd also reduce the 'update' rate of the display (once per second should be sufficient?)

Martin

[kaqkk007]

It works in other classes whether I call it from an interrupt or run it from the main program, so I don't understand why it doesn't work here (just the setup); reading the value works perfectly.The refresh rate is set to once per minute, and that's when I set the value