led-rack-panel/code.py

import board
import rotaryio
import neopixel
import time
import digitalio

num_pixels = 10

pixels = neopixel.NeoPixel(board.GP5, num_pixels)

encoder = rotaryio.IncrementalEncoder(board.GP19, board.GP18)

button = digitalio.DigitalInOut(board.GP17)
button.direction = digitalio.Direction.INPUT
button.pull = digitalio.Pull.UP

button_state = None  # Initialize button state to None

lamp_state = True  # Initialize lamp state to True (on)

cold_white = (200, 255, 200)
white = (255, 255, 255)
warm_white = (255, 20, 100)

def interpolate_color(encoder_pos):
    if encoder_pos <= -25:
        return cold_white
    elif encoder_pos >= 25:
        return warm_white
    else:
        ratio = (encoder_pos + 25) / 50.0
        inverted_ratio = 1.0 - ratio
        interpolated_color = tuple(int(cold_white[i] * inverted_ratio + warm_white[i] * ratio) for i in range(3))
        return interpolated_color
    
fading_in_progress = False  # Flag to indicate if fading animation is in progress

while True:
    enc_pos = encoder.position
    enc_pos = min(max(enc_pos, -25), 25)
    
    # Process button press
    if not button.value and button_state is None:
        button_state = "pressed"
    elif button.value and button_state == "pressed":
        lamp_state = not lamp_state  # Toggle lamp state
        button_state = None  # Reset button state
        fading_in_progress = True  # Set flag to indicate fading animation is in progress
    
    # Perform fading animation if lamp state changed
    if fading_in_progress:
        if lamp_state:  # Fade in
            for brightness in range(255):
                pixels.brightness = brightness / 255.0
                time.sleep(0.2/255)
            pixels.brightness = 1.0  # Ensure full brightness is set
        else:  # Fade out
            for brightness in range(255, -1, -1):
                pixels.brightness = brightness / 255.0
                time.sleep(0.2/255)
            pixels.brightness = 0.0  # Ensure brightness is completely off
        fading_in_progress = False  # Reset flag once fading animation is complete
    
    # Calculate and set current color
    current_color = interpolate_color(enc_pos)
    pixels.fill(current_color)