encoder_test.py

# SPDX-FileCopyrightText: 2021 John Furcean
# SPDX-License-Identifier: MIT

"""I2C rotary encoder simple test example."""

import board
from adafruit_seesaw import seesaw, rotaryio, digitalio

# For use with the STEMMA connector on QT Py RP2040
# import busio
# i2c = busio.I2C(board.SCL1, board.SDA1)
# seesaw = seesaw.Seesaw(i2c, 0x36)

seesaw = seesaw.Seesaw(board.I2C(), addr=0x36)

seesaw_product = (seesaw.get_version() >> 16) & 0xFFFF
print("Found product {}".format(seesaw_product))
if seesaw_product != 4991:
    print("Wrong firmware loaded?  Expected 4991")

seesaw.pin_mode(24, seesaw.INPUT_PULLUP)
button = digitalio.DigitalIO(seesaw, 24)
button_held = False

encoder = rotaryio.IncrementalEncoder(seesaw)
last_position = None

while True:

    # negate the position to make clockwise rotation positive
    position = -encoder.position

    if position != last_position:
        last_position = position
        print("Position: {}".format(position))

    if not button.value and not button_held:
        button_held = True
        print("Button pressed")

    if button.value and button_held:
        button_held = False
        print("Button released")