PIC18F252/2320 tool support?

[dobsonr741]

Are these MCUs still considered supported? I found an old stash about 50 pieces. Installed MPLAB and it says “no MCC content” for them. My interest is to use them them as  I2C GPIO extender.

[woofy]

They predate mcc and have never been supported by it.
You can still use assembler or c with them, you just have to initialize the registers yourself.

[SiliconWizard]

The PIC18F2320 is still in active production and supported by Microchip XC8 and MPLAB X.
https://www.microchip.com/en-us/product/PIC18F2320

I don't know what the deal is with MPLAB, I don't currently use it. But for the compiler, I'd be looking for XC8, not "mcc".

[MarkF]

Here is the xc8 compiler ver2.45 supported devices list.

[dobsonr741]

So far so good, XC8 supports. Have anyone experienced using (and locating) the legacy peripheral libraries? In 2020 it was offered, now I can not find it on the downloads anymore.

https://microchip.my.site.com/s/article/Legacy-Peripheral-Libraries

[DavidAlfa]

In the archived section. Search "Peripheral Libraries" there.
https://www.microchip.com/en-us/tools-resources/archives/mplab-ecosystem

[dobsonr741]

Thanks! Legacy libs installed sided by side to the latest XC8. The only caveat it can not be done on a Mac. The legacy library installer way past their expiration date, they are 32 bit. So planted both the libs and XC8 as Windows app in a Crossover bottle.

[SiliconWizard]

Never used their peripheral libraries back when I was using the PIC18. I really suggest doing without it - the datasheets are pretty good overall and peripherals are decently documented. Using registers directly will save you significant code size and a lot of frustration IMO. But just a thought.

[woofy]

I agree, I wouldn't bother with the peripheral libs for this. As I said above, you are better to configure the registers yourself, the datasheets are clear and descriptive. MPLABX will generate the config table too. Go to Window->Target Memory View-> Configuration bits. Click generate code when done and paste into your project.

[dobsonr741]

Thanks all. Got the blinky going. To my biggest surprise, the Wisp648 I built 15 years ago, along with the programmer app in .NET worked like a charm.