nfcbroadcast.py

Broadcasts NFC tag data to connected clients via WebSocket.

#!/usr/bin/env python

# NFC communication is implemented in its own process, as apparently
# nfcpy and the Qt main event loop do not play well together.
# A queue is used to communicate across process boundaries and submit
# the current Bitcoin URI to be broadcasted via NFC.

import threading
import time

from multiprocessing import Process, Queue

import nfc
import nfc.snep

class NFCBroadcast:
    def start(self):
        self.queue = Queue()
        self.nfc_process = NFCProcess(self.queue)
        self.nfc_process.start()

    def set_btc_uri(self, btc_uri):
        self.queue.put(('uri', btc_uri))

    def shutdown(self):
        self.queue.put(('shutdown', None))

class NFCProcess(Process):
    def __init__(self, queue):
        self.queue = queue
        super(NFCProcess, self).__i

... (truncated -- full source via MCP)