code & files for nfc movie player

Raspberry_Pi_NFC_Movie_Player/add_movie.py

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+# SPDX-FileCopyrightText: Copyright (c) 2024 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import csv
+import os
+import sys
+import board
+import busio
+from digitalio import DigitalInOut
+from adafruit_pn532.spi import PN532_SPI
+
+spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+cs_pin = DigitalInOut(board.D24)
+pn532 = PN532_SPI(spi, cs_pin, debug=False)
+
+csv_file = "movies.csv"
+if not os.path.isfile(csv_file):
+    with open(csv_file, mode='w', newline='') as file:
+        writer = csv.writer(file)
+        writer.writerow(['uid', 'movie'])
+
+def is_duplicate(uid, mov):
+    with open(csv_file, mode='r') as f:
+        reader = csv.DictReader(f)
+        for row in reader:
+            if row['uid'] == uid or row['movie'] == mov:
+                return True
+    return False
+
+ic, ver, rev, support = pn532.firmware_version
+print("Found PN532 with firmware version: {0}.{1}".format(ver, rev))
+
+# Configure PN532 to communicate with MiFare cards
+pn532.SAM_configuration()
+
+print("Waiting for new RFID/NFC card...")
+
+while True:
+    the_uid = pn532.read_passive_target(timeout=0.05)
+    if the_uid is not None:
+        uid_str = f"{[hex(i) for i in the_uid]}"
+        movie = input("Enter the name of the new movie: ")
+        movie = f"{movie}"
+        if is_duplicate(uid_str, movie):
+            print("UID {uid_str} or movie {movie} already exists, skipping.")
+        else:
+            with open(csv_file, mode='a', newline='') as file:
+                writer = csv.writer(file)
+                writer.writerow([uid_str, movie])
+            print(f"Added UID {uid_str} with movie title {movie} to movies.csv")
+            sys.exit()

Raspberry_Pi_NFC_Movie_Player/movies.csv

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+uid,movie

Raspberry_Pi_NFC_Movie_Player/nfc_movie_player.py

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+# SPDX-FileCopyrightText: Copyright (c) 2024 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import subprocess
+import csv
+from datetime import datetime
+import os
+import tkinter as tk
+from PIL import Image, ImageTk
+import board
+import busio
+from digitalio import DigitalInOut
+from adafruit_pn532.spi import PN532_SPI
+
+# ---- Update these file paths for your raspberry pi! ----
+home_path = "/home/YOUR-USERNAME"
+image_path = f"{home_path}/Pictures/blinka.png"
+movie_path = f"{home_path}/Videos"
+csv_file = "movies.csv"
+# ----
+
+if not os.path.isfile(csv_file):
+    with open(csv_file, mode='w', newline='') as f:
+        writer = csv.writer(f)
+        writer.writerow(['uid', 'movie'])
+
+root = tk.Tk()
+root.attributes("-fullscreen", True)
+root.configure(background="black")
+screen_width = root.winfo_screenwidth()
+screen_height = root.winfo_screenheight()
+root.geometry(f"{screen_width}x{screen_height}+0+0")
+
+def toggle_fullscreen():
+    root.attributes("-fullscreen", not root.attributes("-fullscreen"))
+
+def exit_fullscreen():
+    root.destroy()
+
+root.bind("<F11>", toggle_fullscreen)
+root.bind("<Escape>", exit_fullscreen)
+
+image = Image.open(image_path)
+photo = ImageTk.PhotoImage(image)
+
+image_label = tk.Label(root, image=photo, bg="black")
+image_label.place(x=0, y=0)
+
+info_label = tk.Label(root, text = "00:00: AM", font=("Helvetica", 68), fg="white", bg="black")
+info_label.place(x=1870, y = 1030, anchor="se")
+
+x_pos, y_pos = 100, 100
+x_speed, y_speed = 1, 1
+
+spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+cs_pin = DigitalInOut(board.D24)
+pn532 = PN532_SPI(spi, cs_pin, debug=False)
+
+ic, ver, rev, support = pn532.firmware_version
+print("Found PN532 with firmware version: {0}.{1}".format(ver, rev))
+
+# Configure PN532 to communicate with MiFare cards
+pn532.SAM_configuration()
+
+print("Waiting for RFID/NFC card...")
+
+now_playing = False
+# pylint: disable=global-statement
+def move():
+    global x_pos, y_pos, x_speed, y_speed
+    x_pos += x_speed
+    y_pos += y_speed
+    if x_pos + photo.width() >= root.winfo_screenwidth() or x_pos <= 0:
+        x_speed = -x_speed
+    if y_pos + photo.height() >= root.winfo_screenheight() or y_pos <= 0:
+        y_speed = -y_speed
+    image_label.place(x=x_pos, y=y_pos)
+    root.after(30, move)
+
+def get_movie(uid):
+    with open(f"{home_path}/{csv_file}", "r") as file:
+        reader = csv.DictReader(file)
+        for row in reader:
+            if row["uid"] == uid:
+                return row["movie"]
+        return None
+
+def read_card():
+    global now_playing
+    uid = pn532.read_passive_target(timeout=0.05)
+    # Try again if no card is available.
+    if uid is not None:
+        print("Found card with UID:", [hex(i) for i in uid])
+        title = str([hex(i) for i in uid])
+        movie_name = get_movie(title)
+        if movie_path:
+            video = f"{movie_path}/{movie_name}.mp4"
+            subprocess.run(["sudo", "-u", "adafruit", "vlc", "--fullscreen", video], check=False)
+            now_playing = True
+    else:
+        current_time = datetime.now().strftime("%I:%M %p")
+        info_label.config(text=f"{current_time}")
+    root.after(2000, read_card)
+
+def vlc_check():
+    global now_playing
+    try:
+        result = subprocess.check_output(["pgrep", "-x", "vlc"])
+        if result:
+            return True
+        else:
+            return False
+    except subprocess.CalledProcessError:
+        now_playing = False
+        return False
+    root.after(5000, vlc_check)
+
+if not now_playing:
+    move()
+    read_card()
+if now_playing:
+    vlc_check()
+
+root.mainloop()

Raspberry_Pi_NFC_Movie_Player/nfcmedia_systemd.txt

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+[Unit]
+Description=NFC Media Player
+After=x-session-manager.service
+
+[Service]
+User=USERNAME
+Environment=DISPLAY=:0
+Environment=XAUTHORITY=/home/USERNAME/.Xauthority
+ExecStartPre=/bin/sleep 10
+ExecStart=sudo /home/USERNAME/blinka/bin/python /home/USERNAME/nfc_movie_player.py
+
+[Install]
+WantedBy=default.target