code for Matter sensor dashboard

CircuitPython code for Matter sensor demo. Displays data from four different sensor feeds and sends data to one feed with the onboard buttons. IO communication is handled with MQTT

Author: BlitzCityDIY

Matter_Devices_Dashboard/code.py

@@ -0,0 +1,184 @@
+# SPDX-FileCopyrightText: 2024 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import time
+import os
+import ssl
+import wifi
+import socketpool
+import microcontroller
+import board
+import digitalio
+import displayio
+from adafruit_bitmap_font import bitmap_font
+from adafruit_display_text import bitmap_label
+from adafruit_display_shapes.circle import Circle
+from adafruit_display_shapes.roundrect import RoundRect
+from adafruit_ticks import ticks_ms, ticks_add, ticks_diff
+import adafruit_minimqtt.adafruit_minimqtt as MQTT
+
+aio_username = os.getenv("ADAFRUIT_AIO_USERNAME")
+aio_key = os.getenv("ADAFRUIT_AIO_KEY")
+
+# feeds!
+temp_feed = aio_username + "/feeds/eve-temp" # temperature sensor
+humid_feed = aio_username + "/feeds/eve-humid" # humidity sensor
+lux_feed = aio_username + "/feeds/eve-light" # lux sensor
+occupy_feed = aio_username + "/feeds/eve-occupy" # occupation sensor
+light_feed = aio_username + "/feeds/nanoleaf" # lightstrip
+
+# buttons
+button0 = digitalio.DigitalInOut(board.D0)
+button0.direction = digitalio.Direction.INPUT
+button0.pull = digitalio.Pull.UP
+button0_state = False
+button1 = digitalio.DigitalInOut(board.D1)
+button1.direction = digitalio.Direction.INPUT
+button1.pull = digitalio.Pull.DOWN
+button1_state = False
+button2 = digitalio.DigitalInOut(board.D2)
+button2.direction = digitalio.Direction.INPUT
+button2.pull = digitalio.Pull.DOWN
+button2_state = False
+
+display = board.DISPLAY
+group = displayio.Group()
+display.root_group = group
+
+# load background bitmap
+bitmap = displayio.OnDiskBitmap("/tft_bg.bmp")
+tile_grid = displayio.TileGrid(bitmap, pixel_shader=bitmap.pixel_shader)
+group = displayio.Group()
+group.append(tile_grid)
+
+# bitmap font
+font_file = "/roundedHeavy-26.bdf"
+font = bitmap_font.load_font(font_file)
+# text elements
+temp_text = bitmap_label.Label(font, text="00.0°C", x=55, y=70, color=0xFFFFFF)
+group.append(temp_text)
+humid_text = bitmap_label.Label(font, text="00.0%", x=120, y=70, color=0xFFFFFF)
+group.append(humid_text)
+lux_text = bitmap_label.Label(font, text="00 lx", x=190, y=70, color=0xFFFFFF)
+group.append(lux_text)
+occupy_text = bitmap_label.Label(font, text="Occupied?", x=128,
+                                 y=display.height - 12, color=0xFFFFFF)
+group.append(occupy_text)
+onOff_circ = Circle(display.width - 12, display.height - 12, 10, fill=0xcc0000)
+group.append(onOff_circ)
+scene_select = RoundRect(0, 0, 42, 40, 8, fill=None, outline=0xcccc00, stroke=6)
+scene_y = [0, int(display.height / 2) - int(scene_select.height / 2),
+           display.height - scene_select.height - 1]
+group.append(scene_select)
+
+display.root_group = group
+print()
+print("Connecting to WiFi...")
+#  connect to your SSID
+wifi.radio.connect(os.getenv('CIRCUITPY_WIFI_SSID'), os.getenv('CIRCUITPY_WIFI_PASSWORD'))
+print("Connected to WiFi!")
+
+# pylint: disable=unused-argument
+# Define callback methods which are called when events occur
+def connected(client, userdata, flags, rc): # pylint: disable=unused-argument
+    # This function will be called when the client is connected
+    # successfully to the broker.
+    print("Connected to Adafruit IO!")
+    # Subscribe to all changes on feeds
+    client.subscribe(temp_feed)
+    client.subscribe(humid_feed)
+    client.subscribe(lux_feed)
+    client.subscribe(occupy_feed)
+    client.subscribe(light_feed)
+
+def disconnected(client, userdata, rc): # pylint: disable=unused-argument
+    # This method is called when the client is disconnected
+    print("Disconnected from Adafruit IO!")
+
+def on_message(client, topic, msg): # pylint: disable=unused-argument
+    # This method is called when a topic the client is subscribed to
+    # has a new message.
+    print(f"New message on topic {topic}")
+
+def on_temp_msg(client, topic, msg):
+    print(f"temp feed data: {msg}°C")
+    temp_text.text = f"{float(msg):.01f}°C"
+
+def on_humid_msg(client, topic, msg):
+    print(f"humid feed data: {msg}%")
+    humid_text.text = f"{float(msg):.01f}%"
+
+def on_lux_msg(client, topic, msg):
+    print(f"lux feed data: {msg} lx")
+    lux_text.text = f"{float(msg):.00f} lx"
+
+def on_occupy_msg(client, topic, msg):
+    print(f"occupation feed data: {msg}")
+    if msg == "1":
+        onOff_circ.fill = 0x00cc00
+    else:
+        onOff_circ.fill = 0xcc0000
+
+def on_light_msg(client, topic, msg):
+    print(f"light scene selected: {msg}")
+    scene_select.y = scene_y[int(msg)]
+
+pool = socketpool.SocketPool(wifi.radio)
+ssl_context = ssl.create_default_context()
+# Initialize an Adafruit IO HTTP API object
+mqtt_client = MQTT.MQTT(
+    broker="io.adafruit.com",
+    port=1883,
+    username=aio_username,
+    password=aio_key,
+    socket_pool=pool,
+    ssl_context=ssl_context,
+)
+# Setup the callback methods above
+mqtt_client.on_connect = connected
+mqtt_client.on_disconnect = disconnected
+mqtt_client.on_message = on_message
+mqtt_client.add_topic_callback(temp_feed, on_temp_msg)
+mqtt_client.add_topic_callback(humid_feed, on_humid_msg)
+mqtt_client.add_topic_callback(lux_feed, on_lux_msg)
+mqtt_client.add_topic_callback(occupy_feed, on_occupy_msg)
+mqtt_client.add_topic_callback(light_feed, on_light_msg)
+
+# Connect the client to the MQTT broker.
+print("Connecting to Adafruit IO...")
+mqtt_client.connect()
+
+clock_clock = ticks_ms()
+clock_timer = 5 * 1000
+
+while True:
+    try:
+        if ticks_diff(ticks_ms(), clock_clock) >= clock_timer:
+            mqtt_client.loop(timeout=1)
+            clock_clock = ticks_add(clock_clock, clock_timer)
+        # reset button state on release
+        if button0.value and button0_state:
+            button0_state = False
+        if not button1.value and button1_state:
+            button1_state = False
+        if not button2.value and button2_state:
+            button2_state = False
+        # buttons change light scenes
+        if not button0.value and not button0_state:
+            mqtt_client.publish(light_feed, 0)
+            scene_select.y = scene_y[0]
+            button0_state = True
+        if button1.value and not button1_state:
+            mqtt_client.publish(light_feed, 1)
+            scene_select.y = scene_y[1]
+            button1_state = True
+        if button2.value and not button2_state:
+            mqtt_client.publish(light_feed, 2)
+            scene_select.y = scene_y[2]
+            button2_state = True
+    except Exception as error: # pylint: disable=broad-except
+        print(error)
+        mqtt_client.disconnect()
+        time.sleep(5)
+        microcontroller.reset()