Accessing Digital Pin 26 on ATMEGA328PB

Using Arduino Microcontrollers
1

I'm running a custom PCB using the ATMEGA328PB chip and using the MINICORE bootloader. For some reason I can't access DP26 which should be attached to physical pin 22 according to this diagram.

Any ideas what I'm missing? For reference, I can use pins 2-25.

https://camo.githubusercontent.com/e9e86ccbdbf3d99f36baf4cfc4deb3f632a793f61431f1241ad324d9029faff8/68747470733a2f2f692e696d6775722e636f6d2f5a51736a4c774c2e6a7067

2

Is digital Pin 26 defined in the Arduino core, for your board definition?

3

I'm new to all of that but I would assume that would be handled in the MINI CORE board info?

4

Aren't A6 and A7 analog input only on the mega328 chips?

Edit: A6 & A7 fully functional on the 328PB chip.

5

Review your assumption by checking the board definition and the pin definition file.

6

Edited my post.

7

This is where to find the standard arduino's pin definition file:
image
If you use a different board, your board will be under variants folder and your board's name. It's not for beginners. If you wish to edit, at the very least make a back up. Post your updated file if you want some help from here.

8

Okay after a fresh reboot, things are working. I didn't change anything other than rebooting. Must have been a board definition that got updated or something. Either way it's working now!

Thanks all for the help!

9

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