The rotary encorder pin connections?

msiriwardena

The jonnymacs beginner series 2 , the encoder has 5 pins.
There are no directions how to connect them to the P2 Edge.

Thins are 1. Ground
2. + --> 5v OR 3.3v
3.SW -
4.DT
5.CLK
Thank you,
Siri

DigitalBob

If you look at the Jonny Mac jm_quadrature_test for P2 its ENC A=40, ENC B=41, and SW=42

JonnyMac

Hmmm... I posted a response to this earlier, but it seems to have disappeared (2021 striking, already?)

I don't like using "magic numbers" for pins, so they're always defined in my apps.

In the version I'm running...

con { app io pins }

  ENC_BTN  = 18  { I }                                          ' active-low encoder connections
  ENC_B    = 17  { I }                                          ' encoder data
  ENC_A    = 16  { I }                                          ' encoder clock

This is the beauty of named constants -- we only have to change them in one place. Note that ENC_BTN is the SW connection on the encoder.

I also like to use specific colors when wiring:
-- Black for Ground
-- Orange for 3.3V (Red for 5.0V)
-- Blue for the SW pin
-- Yellow for the DT pin
-- White for the CLK pin