Merge pull request #2522 from adafruit/ESP32_S2_Reverse_TFT_Digital_Clock

New ESP32-S2 Rev TFT Digital clock project

Author: TheKitty

ESP32_S2_Reverse_TFT_Digital_Clock/code.py

@@ -0,0 +1,94 @@
+# SPDX-FileCopyrightText: 2023 Trevor Beaton for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+import os
+import ssl
+import time
+import wifi
+import board
+import displayio
+import terminalio
+import socketpool
+import adafruit_requests
+from adafruit_display_text import bitmap_label
+
+# Initialize Wi-Fi connection
+try:
+    wifi.radio.connect(
+        os.getenv("CIRCUITPY_WIFI_SSID"), os.getenv("CIRCUITPY_WIFI_PASSWORD")
+    )
+    print("Connected to %s!" % os.getenv("CIRCUITPY_WIFI_SSID"))
+except Exception as e:  # pylint: disable=broad-except
+    print(
+        "Failed to connect to WiFi. Error:", e, "\nBoard will hard reset in 30 seconds."
+    )
+
+pool = socketpool.SocketPool(wifi.radio)
+requests = adafruit_requests.Session(pool, ssl.create_default_context())
+
+# Set up the URL for fetching time data
+DATA_SOURCE = "http://worldtimeapi.org/api/timezone/" + os.getenv("TIMEZONE")
+
+# Set up display a default image
+display = board.DISPLAY
+default_bitmap = displayio.OnDiskBitmap("/images/blanka-chan.bmp")
+default_tile_grid = displayio.TileGrid(default_bitmap, pixel_shader=default_bitmap.pixel_shader)
+
+group = displayio.Group()
+group.append(default_tile_grid)
+
+# Create label for displaying time
+time_label = bitmap_label.Label(terminalio.FONT, scale=5)
+time_label.anchor_point = (0.2, 0.5)
+time_label.anchored_position = (display.width // 2, display.height // 2)
+
+# Create main group to hold all display groups
+main_group = displayio.Group()
+main_group.append(group)
+main_group.append(time_label)
+# Show the main group on the display
+display.show(main_group)
+
+current_background_image = "/images/blanka-chan.bmp"
+
+def set_background_image(filename):
+    global current_background_image  # pylint: disable=global-statement
+    tile_bitmap = displayio.OnDiskBitmap(filename)
+    new_tile_grid = displayio.TileGrid(tile_bitmap, pixel_shader=tile_bitmap.pixel_shader)
+    group[0] = new_tile_grid
+    current_background_image = filename
+
+def parse_time(datetime_str):
+    # Extract the time part from the datetime string
+    time_str = datetime_str.split("T")[1].split(".")[0]
+    hour, minute, _ = map(int, time_str.split(":"))
+
+    # Convert 24-hour format to 12-hour format and determine AM/PM
+    period = "AM"
+    if hour >= 12:
+        period = "PM"
+        if hour > 12:
+            hour -= 12
+    elif hour == 0:
+        hour = 12
+
+    return hour, minute, period
+
+while True:
+    # Fetch time data from WorldTimeAPI
+    response = requests.get(DATA_SOURCE)
+    data = response.json()
+
+    # Parse the time from the datetime string
+    current_hour, current_minute, current_period = parse_time(data["datetime"])
+
+    # Display the time
+    time_label.text = " {:2}{}\n  :{:02}".format(current_hour, current_period, current_minute)
+
+    # Switch between two images
+    if current_background_image == "/images/blanka-chan.bmp":
+        set_background_image("/images/blanka-chan-charged.bmp")
+    else:
+        set_background_image("/images/blanka-chan.bmp")
+
+    time.sleep(5)