CircuitPythyon Simple i2C Seesaw Rotary Enocder

seesaw_rotary_encoder.py

import board
import busio
from adafruit_seesaw.seesaw import Seesaw
from adafruit_seesaw.digitalio import DigitalIO
from adafruit_seesaw.neopixel import NeoPixel

import struct

_ENCODER_BASE = 0x11
_ENCODER_POSITION = 0x30
_ENCODER_STATUS = 0x00
_ENCODER_DELTA = 0x40
_SWITCH = 24
_NEOPIX = 6

def get_encoder_pos(ss,encoder=0):
    """Read the current position of the encoder"""
    buf = bytearray(4)
    ss.read(_ENCODER_BASE, _ENCODER_POSITION + encoder, buf)
    return struct.unpack(">i", buf)[0]

def set_encoder_pos(ss, pos, encoder=0):
    """Set the current position of the encoder"""
    cmd = struct.pack(">i", pos)
    ss.write(_ENCODER_BASE, _ENCODER_POSITION + encoder, cmd)

def get_encoder_delta(ss,encoder=0):
    """Read the change in encoder position since it was last read"""
    buf = bytearray(4)
    ss.read(_ENCODER_BASE, _ENCODER_DELTA + encoder, buf)
    return struct.unpack(">i", buf)[0]

# initialize i2c_bus (QTPY RP2040)
i2c_bus = busio.I2C(board.SCL1, board.SDA1)

# initialize seesaw
ss = Seesaw(i2c_bus,addr=0x36)

button = DigitalIO(ss,_SWITCH)
button_held = False

neopixel = NeoPixel(ss,_NEOPIX,1)
neopixel[0] = (0,255,0)


while True:
    delta = get_encoder_delta(ss)
    if delta != 0:
        print(delta)
        
    if not button.value and not button_held:
        button_held = True
        neopixel[0] = (255,0,0)
        print("pressed")
        
    if button.value and button_held:
        neopixel[0] = (0,255,0)
        button_held = False