A simple 'busy light' made for Adafruit MatrixPortal for displaying your meeting status to those outside your home office.

meeting-display-matrixportal.py

# Author: Max McKinney
# Description: A simple 'busy light' for displaying your meeting status to those outside your home office.

import time
import random
import board
import terminalio
import displayio
import neopixel
from digitalio import DigitalInOut, Direction, Pull
from adafruit_matrixportal.matrixportal import MatrixPortal
from adafruit_bitmap_font import bitmap_font
from adafruit_display_text.label import Label
from adafruit_display_shapes.rect import Rect
from adafruit_matrixportal.network import Network

# --- Vars
UPDATE_DELAY = 3
IS_BUSY = True
IS_DIMMED = False
# ---

# --- Display setup ---
matrixportal = MatrixPortal(debug=False)
display = matrixportal.display

# Turn off onboard neopixel
pixels = neopixel.NeoPixel(board.NEOPIXEL, 1)
pixels[0] = (0, 0, 0)

# Create groups to hold content
contentGroup = displayio.Group()
emptyGroup = displayio.Group()

# --- Content ---
# Background object
background = Rect(0,0,64,32, fill=0x000000)

contentGroup.append(background)

# Create status label (with a default y spacing for the 'connecting' text
font = bitmap_font.load_font("/IBMPlexMono-Medium-24_jep.bdf")
status_label = Label(font,y=14, max_glyphs=20)
# Default text show as connecting, once the internet connection has happened it will resume the code flow and update the text
status_label.text = "..."

contentGroup.append(status_label)
# ---

def update_bg():
    # Pop the background off the bottom of the stack
    background = contentGroup.pop(0)

    # Change the background color of the background
    if IS_BUSY:
        background.fill = 0xFF0000
    else:
        background.fill = 0x00FF00
    # Insert the modified background back at the bottom of the stack
    contentGroup.insert(0, background)

def update_text():
    # Set status text
    status_label.text = "BUSY" if IS_BUSY else "FREE"

    # Set status text position
    # Get the bouding box info from the label component so we can center it. I subtract 1 from the final value to offset it due to the custom font sizing.
    bbx, bby, bbwidth, bbh = status_label.bounding_box
    status_label.x = round((display.width / 2 - bbwidth / 2) - 1)
    status_label.y = display.height // 2

def fetch_updates():
    print("Fetching status...")

    # Returns a JSON object as a python dict object from the selected AdafruitIO feed
    meetingFeed = matrixportal.get_io_feed("meeting-status.inmeeting")
    meetingValue = meetingFeed['last_value']

    isDimmedFeed = matrixportal.get_io_feed("meeting-status.isdimmed")
    isDimmedValue = isDimmedFeed['last_value']

    # Update the value with the converted string
    global IS_BUSY
    IS_BUSY = str_to_bool(meetingValue)

    global IS_DIMMED
    IS_DIMMED = str_to_bool(isDimmedValue)

def update_screen():
    fetch_updates()
    update_bg()
    update_text()

def str_to_bool(s):
    if s == 'True':
         return True
    elif s == 'False':
         return False
    else:
         raise ValueError # evil ValueError that doesn't tell you what the wrong value was

# --- Initial display ---
display.show(contentGroup)
update_screen()
last_update = time.monotonic()

# --- Loop ---
while True:

    # Check if dimmed, then hide content
    # Once a bug within Circuitpython has been fixed I can use display.brightness
    # https://github.com/adafruit/circuitpython/issues/3664
    if IS_DIMMED:
        display.show(emptyGroup)
    else:
        display.show(contentGroup)

    # Status checking interval
    if time.monotonic() > last_update + UPDATE_DELAY:

        update_screen()

        last_update = time.monotonic()