add resources for guide

Author: brentru

pyportal_pet_planter/code.py

@@ -0,0 +1,318 @@
+import time
+
+import board
+import busio
+from digitalio import DigitalInOut
+import adafruit_esp32spi.adafruit_esp32spi_socket as socket
+from adafruit_esp32spi import adafruit_esp32spi, adafruit_esp32spi_wifimanager
+import adafruit_imageload
+import displayio
+import neopixel
+from adafruit_bitmap_font import bitmap_font
+from adafruit_display_text.label import Label
+from adafruit_io.adafruit_io import IO_MQTT
+from adafruit_minimqtt import MQTT
+from adafruit_pyportal import PyPortal
+from adafruit_seesaw.seesaw import Seesaw
+from simpleio import map_range
+
+#---| User Config |---------------
+
+# How often to poll the soil sensor, in seconds
+DELAY_SENSOR = 30
+
+# How often to send data to adafruit.io, in minutes
+DELAY_PUBLISH = 5
+
+# Maximum soil moisture measurement
+SOIL_LEVEL_MAX = 500.0
+
+# Minimum soil moisture measurement
+SOIL_LEVEL_MIN= 350.0
+
+#---| End User Config |---------------
+
+# Background image
+BACKGROUND = "/images/roots.bmp"
+# Icons for water level and temperature
+ICON_LEVEL = "/images/icon-wetness.bmp"
+ICON_TEMP = "/images/icon-temp.bmp"
+WATER_COLOR = 0x16549E
+
+# Audio files
+wav_water_high = "/sounds/water-high.wav"
+wav_water_low = "/sounds/water-low.wav"
+
+# the current working directory (where this file is)
+cwd = ("/"+__file__).rsplit('/', 1)[0]
+
+# Get wifi details and more from a secrets.py file
+try:
+    from secrets import secrets
+except ImportError:
+    print("WiFi secrets are kept in secrets.py, please add them there!")
+    raise
+
+# Set up i2c bus
+i2c_bus = busio.I2C(board.SCL, board.SDA)
+
+# Initialize soil sensor (s.s)
+ss = Seesaw(i2c_bus, addr=0x36)
+
+# PyPortal ESP32 AirLift Pins
+esp32_cs = DigitalInOut(board.ESP_CS)
+esp32_ready = DigitalInOut(board.ESP_BUSY)
+esp32_reset = DigitalInOut(board.ESP_RESET)
+
+spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
+status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2)
+wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)
+
+# Initialize PyPortal Display
+display = board.DISPLAY
+
+WIDTH = board.DISPLAY.width
+HEIGHT = board.DISPLAY.height
+
+# Initialize new PyPortal object
+pyportal = PyPortal(esp=esp,
+                    external_spi=spi)
+
+# Set backlight level
+pyportal.set_backlight(0.5)
+
+# Create a new DisplayIO group
+splash = displayio.Group(max_size=15)
+
+# show splash group
+display.show(splash)
+
+# Palette for water bitmap
+palette = displayio.Palette(2)
+palette[0] = 0x000000
+palette[1] = WATER_COLOR
+palette.make_transparent(0)
+
+# Create water bitmap
+water_bmp = displayio.Bitmap(display.width, display.height, len(palette))
+water = displayio.TileGrid(water_bmp, pixel_shader=palette)
+splash.append(water)
+
+print("drawing background..")
+# Load background image
+try:
+    bg_bitmap, bg_palette = adafruit_imageload.load(BACKGROUND,
+                                                    bitmap=displayio.Bitmap,
+                                                    palette=displayio.Palette)
+# Or just use solid color
+except (OSError, TypeError):
+    BACKGROUND = BACKGROUND if isinstance(BACKGROUND, int) else 0x000000
+    bg_bitmap = displayio.Bitmap(display.width, display.height, 1)
+    bg_palette = displayio.Palette(1)
+    bg_palette[0] = BACKGROUND
+bg_palette.make_transparent(0)
+background = displayio.TileGrid(bg_bitmap, pixel_shader=bg_palette)
+
+# Add background to display
+splash.append(background)
+
+print('loading fonts...')
+# Fonts within /fonts/ folder
+font = cwd+"/fonts/GothamBlack-50.bdf"
+font_small = cwd+"/fonts/GothamBlack-25.bdf"
+
+# pylint: disable=syntax-error
+data_glyphs = b'0123456789FC-* '
+font = bitmap_font.load_font(font)
+font.load_glyphs(data_glyphs)
+
+font_small = bitmap_font.load_font(font_small)
+full_glyphs = b'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-,.: '
+font_small.load_glyphs(full_glyphs)
+
+# Label to display Adafruit IO status
+label_status = Label(font_small, max_glyphs=20)
+label_status.x = 305
+label_status.y = 10
+splash.append(label_status)
+
+# Create a label to display the temperature
+label_temp = Label(font, max_glyphs=4)
+label_temp.x = 35
+label_temp.y = 300
+splash.append(label_temp)
+
+# Create a label to display the water level
+label_level = Label(font, max_glyphs=4)
+label_level.x = display.width - 130
+label_level.y = 300
+splash.append(label_level)
+
+print('loading icons...')
+# Load temperature icon
+icon_tmp_bitmap, icon_palette = adafruit_imageload.load(ICON_TEMP,
+                                                        bitmap=displayio.Bitmap,
+                                                        palette=displayio.Palette)
+icon_palette.make_transparent(0)
+icon_tmp_bitmap = displayio.TileGrid(icon_tmp_bitmap,
+                                     pixel_shader=icon_palette,
+                                     x=0, y=280)
+splash.append(icon_tmp_bitmap)
+
+# Load level icon
+icon_lvl_bitmap, icon_palette = adafruit_imageload.load(ICON_LEVEL,
+                                                        bitmap=displayio.Bitmap,
+                                                        palette=displayio.Palette)
+icon_palette.make_transparent(0)
+icon_lvl_bitmap = displayio.TileGrid(icon_lvl_bitmap,
+                                     pixel_shader=icon_palette,
+                                     x=315, y=280)
+splash.append(icon_lvl_bitmap)
+
+# Connect to WiFi
+label_status.text = "Connecting..."
+while not esp.is_connected:
+    try:
+        wifi.connect()
+    except RuntimeError as e:
+        print("could not connect to AP, retrying: ",e)
+        wifi.reset()
+        continue
+print("Connected to WiFi!")
+
+# Initialize a new MiniMQTT Client object
+mqtt_client = MQTT(
+    socket=socket,
+    broker="io.adafruit.com",
+    username=secrets["aio_username"],
+    password=secrets["aio_key"],
+    network_manager=wifi
+)
+
+# Adafruit IO Callback Methods
+# pylint: disable=unused-argument
+def connected(client):
+    # Connected function will be called when the client is connected to Adafruit IO.
+    print('Connected to Adafruit IO!')
+
+def subscribe(client, userdata, topic, granted_qos):
+    # This method is called when the client subscribes to a new feed.
+    print('Subscribed to {0} with QOS level {1}'.format(topic, granted_qos))
+
+# pylint: disable=unused-argument
+def disconnected(client):
+    # Disconnected function will be called if the client disconnects
+    # from the Adafruit IO MQTT broker.
+    print("Disconnected from Adafruit IO!")
+
+# Initialize an Adafruit IO MQTT Client
+io = IO_MQTT(mqtt_client)
+
+# Connect the callback methods defined above to the Adafruit IO MQTT Client
+io.on_connect = connected
+io.on_subscribe = subscribe
+io.on_disconnect = disconnected
+
+# Connect to Adafruit IO
+print("Connecting to Adafruit IO...")
+io.connect()
+label_status.text = " "
+print("Connected!")
+
+fill_val = 0.0
+def fill_water(fill_percent):
+    """Fills the background water.
+    :param float fill_percent: Percentage of the display to fill.
+
+    """
+    assert fill_percent <= 1.0, "Water fill value may not be > 100%"
+    # pylint: disable=global-statement
+    global fill_val
+
+    if fill_val > fill_percent:
+        for _y in range(int((board.DISPLAY.height-1) - ((board.DISPLAY.height-1)*fill_val)),
+                        int((board.DISPLAY.height-1) - ((board.DISPLAY.height-1)*fill_percent))):
+            for _x in range(1, board.DISPLAY.width-1):
+                water_bmp[_x, _y] = 0
+    else:
+        for _y in range(board.DISPLAY.height-1,
+                        (board.DISPLAY.height-1) - ((board.DISPLAY.height-1)*fill_percent), -1):
+            for _x in range(1, board.DISPLAY.width-1):
+                water_bmp[_x, _y] = 1
+    fill_val = fill_percent
+
+def display_temperature(temp_val, is_celsius=False):
+    """Displays the temperature from the STEMMA soil sensor
+    on the PyPortal Titano.
+    :param float temp: Temperature value.
+    :param bool is_celsius:
+
+    """
+    if not is_celsius:
+        temp_val = (temp_val * 9 / 5) + 32 - 15
+        print('Temperature: %0.0fF'%temp_val)
+        label_temp.text = '%0.0fF'%temp_val
+        return int(temp_val)
+    else:
+        print('Temperature: %0.0fC'%temp_val)
+        label_temp.text = '%0.0fC'%temp_val
+        return int(temp_val)
+
+# initial reference time
+initial = time.monotonic()
+while True:
+    # Explicitly pump the message loop
+    # to keep the connection active
+    try:
+        io.loop()
+    except (ValueError, RuntimeError) as e:
+        print("Failed to get data, retrying...\n", e)
+        wifi.reset()
+        continue
+    now = time.monotonic()
+
+    print("reading soil sensor...")
+    # Read capactive
+    moisture = ss.moisture_read()
+    label_level.text = str(moisture)
+
+    # Convert into percentage for filling the screen
+    moisture_percentage = map_range(float(moisture), SOIL_LEVEL_MIN, SOIL_LEVEL_MAX, 0.0, 1.0)
+
+    # Read temperature
+    temp = ss.get_temp()
+    temp = display_temperature(temp)
+
+    # fill display
+    print("filling disp..")
+    fill_water(moisture_percentage)
+    print("disp filled..")
+
+    print("temp: " + str(temp) + "  moisture: " + str(moisture))
+
+    # Play water level alarms
+    if moisture <= SOIL_LEVEL_MIN:
+        print("Playing low water level warning...")
+        pyportal.play_file(wav_water_low)
+    elif moisture >= SOIL_LEVEL_MAX:
+        print("Playing high water level warning...")
+        pyportal.play_file(wav_water_high)
+
+
+    if now - initial > (DELAY_PUBLISH * 60):
+        try:
+            print("Publishing data to Adafruit IO...")
+            label_status.text = "Sending to IO..."
+            io.publish("moisture", moisture)
+            io.publish("temperature", temp)
+            print("Published")
+            label_status.text = "Data Sent!"
+
+            # reset timer
+            initial = now
+        except (ValueError, RuntimeError) as e:
+            label_status.text = "ERROR!"
+            print("Failed to get data, retrying...\n", e)
+            wifi.reset()
+    time.sleep(DELAY_SENSOR)