SparkFun Qwiic Micro: Incorrect pin assignments

[adamgarbo]

Hi folks,

Recently, I was trying to figure out why not all of the analog pins on my Qwiic Micro boards were working properly. I started looking at the graphical datasheet and EAGLE board files and realized there a couple of small mistakes in the board defintion.

Issue:
A4 (D5) & A5 (D6) are tied to PA00 and PA01, but these pins don't actually have ADC functionality on the SAMD21E (see figure below). D7 is tied to PA04, which should be A4, but in variants.cpp looks to be mapped to A5.

Solution:
The Qwiic Micro only makes use of 5/6 available ADC pins. Both the board definition files and graphical datasheet should be updated to reflect the correct pins. I've included a table below of what I believe are the correct ADC/IO/GPIO pins combinations.

ADC	I/O Pin	Digial Pin
A0	PA02	D1
A1	PA06	D2
A2	PA05	D3
A3	PA07	D4
N/A	PA00	D5
N/A	PA01	D6
A4/A5	PA04	D7

Please let me know if you require additional clarificaiton.

Cheers,
Adam

[adamgarbo]

Closed due to inactivity.