Pins 1 and 36 on same xbar?

[OliverColeman]

I think I found another crossbar limitation on pin arrangements. I'm connecting 4 AB encoders. My original intention was to use these pin assignments:

QuadEncoder e1(1, 1, 30)
QuadEncoder e2(2, 2, 31)
QuadEncoder e3(3, 3, 36)
QuadEncoder e4(4, 4, 37)

But there seemed to be weird behaviour on e1 and e3. Through trial and error I found that changing e3 to use pins 3 and 33 seemed to fix it. Looking at the diagram below it looks like pins 1 and 36 are both on xbar 16. Might need to update the readme? Happy to make a PR if my analysis is correct (and trawl through the rest of the pins to see if I can pick up any other conflicts); not that experienced so wanted to check first.

https://github.com/KurtE/TeensyDocuments/blob/master/Teensy4.1%20Pins.pdf

[OliverColeman]

Went through that diagram (after hitting what I thought was another one but turned out to be the already known one, gah). As far as I can tell there aren't any other encoder pins sharing a cross bar. Here's the pin numbers and their associated xbar, according to that diagram:

0, 5, 37 : 17
1, 36 : 16
2 : 6
3 : 7
4 : 8
7 : 15
30 : 23
31 : 22
33 : 9

[OliverColeman]

In other news: I added a PR on the repo for that pinout diagram that adds columns for the quadrature encoder pins
KurtE/TeensyDocuments#6

[mjs513]

Sorry been distracted with something else so forgot about this. @KurtE is working on the columns now. So probably will update the readme soon

[mjs513]

Oh we both forgot pin 8
0, 5, 37 : 17
1, 36 : 16
2 : 6
3 : 7
4 : 8
7 : 15
8 : 14
30 : 23
31 : 22
33 : 9

Just updated the Readme