Add files for upcoming guide, "Where's My Friend? Location Display Frame with PyPortal and ItsaSnap"

PyPortal/PyPortal_Wheres_My_Friend/code.py

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+# SPDX-FileCopyrightText: 2024 Brent Rubell, written for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+import time
+import board
+import displayio
+import terminalio
+from adafruit_display_shapes.rect import Rect
+from adafruit_display_text import label
+from adafruit_pyportal import PyPortal
+
+# Adafruit IO shared feed key
+IO_FEED_KEY = 'location'
+# Fetch the location every 5 seconds
+SLEEP_DELAY_SECONDS = 5
+# Set the backlight brightness, 0.0 (off) to 1.0 (max brightness)
+BACKLIGHT_BRIGHTNESS = 0.5
+# Location text and images
+LOCATION_IMAGES = { 'home': 'images/home.bmp', 'work': 'images/office.bmp',
+                    'gym': 'images/workout.bmp', 'commute': 'images/subway.bmp' }
+
+# Create the PyPortal object
+pyportal = PyPortal(status_neopixel=board.NEOPIXEL)
+
+# Configure the PyPortal's display
+display = board.DISPLAY
+display.rotation = 0
+display.brightness = BACKLIGHT_BRIGHTNESS
+
+# Display label and image coordinates
+TEXT_AREA_X = display.width // 14
+TEXT_AREA_Y = 20
+TEXT_AREA_LOCATION_X = display.width // 3
+TEXT_AREA_LOCATION_Y = display.height - 20
+IMAGE_SPRITE_X = (display.width // 3) - 10
+IMAGE_SPRITE_Y = display.height // 5
+
+# Create a displayIO Group
+group = displayio.Group()
+
+# Draw the background
+bg_group = displayio.Group()
+rect = Rect(0, 0, display.width, display.height, fill=0xFFFFFF)
+bg_group.append(rect)
+group.append(bg_group)
+
+# Use the default font
+font = terminalio.FONT
+
+# Draw a label for the header text
+text_area = label.Label(font, text="Where is Trevor?", color=0x000000, scale=3)
+text_area.x = TEXT_AREA_X
+text_area.y = TEXT_AREA_Y
+group.append(text_area)
+
+# Draw a label for the location text
+text_area_location = label.Label(font, text="@ home", color=0x000000, scale=3)
+text_area_location.x = TEXT_AREA_LOCATION_X
+text_area_location.y = TEXT_AREA_LOCATION_Y
+group.append(text_area_location)
+
+# Create a group for the icon only
+icon_group = displayio.Group()
+group.append(icon_group)
+
+# Show the group
+display.root_group = group
+
+def set_image(image_group, filename):
+    """Sets the image file for a given group for display."""
+    print(f"Set image to {filename}")
+    if image_group:
+        image_group.pop()
+
+    image_file = open(filename, "rb")
+    image = displayio.OnDiskBitmap(image_file)
+    image_sprite = displayio.TileGrid(image,
+                                      pixel_shader=getattr(image, 'pixel_shader',
+                                      displayio.ColorConverter()))
+    image_sprite.x = IMAGE_SPRITE_X
+    image_sprite.y = IMAGE_SPRITE_Y
+    image_group.append(image_sprite)
+
+prv_location = None
+while True:
+    try:
+        print("Fetching location data...")
+        # Fetch the location data from Adafruit IO
+        feed = pyportal.get_io_feed(IO_FEED_KEY)
+        # If the location value is in the list of images
+        if feed['last_value'] in LOCATION_IMAGES:
+            # Check if the location has changed from the last time
+            # we fetched the location
+            if prv_location == feed['last_value']:
+                print("Location has not changed!")
+            else: # Location has changed
+                print(f"Location: {feed['last_value']}")
+                # Load the image for the current location
+                set_image(icon_group, LOCATION_IMAGES[feed['last_value']])
+                # Update the location text
+                text_area_location.text=f"@ {feed['last_value']}"
+                # Show the refreshed group
+                display.root_group = group
+                # Update the previous location
+                prv_location = feed['last_value']
+        else:
+            print("Location not found in images!")
+            # Update the location text
+            text_area_location.text="Error: Unknown Value!"
+            # Show the refreshed group
+            display.root_group = group
+    except RuntimeError as e:
+        print("Failed to fetch location data: ", e)
+
+    # Wait 5 minutes (300 seconds) before fetching the location feed again
+    print("Sleeping, fetching the location again in 5 minutes!")
+    time.sleep(SLEEP_DELAY_SECONDS * 60)