68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
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import ctypes
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import sys
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import platform
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from PyQt5.QtCore import QMutex, Qt, QTimer, pyqtSlot, pyqtSignal
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from .component import Component
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import nfc
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from nfc.clf import RemoteTarget
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class RFID_PN532(Component):
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new_id_signal = pyqtSignal()
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def __init__(self, config=None, name=None, period=1, lazy=True, paused=False, threaded=True):
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super().__init__(config=config, name=name, period=period, lazy=lazy, paused=paused, threaded=threaded)
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self.mutex = QMutex()
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self.simulate="--sim-rfid" in sys.argv
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self.clf = None
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self.connected=False
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self.tag_present=False
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self.current_data=None
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self.is_win = platform.system() == "Windows"
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self.dev_list = ["tty:USB0:pn532","tty:USB1:pn532"] if self.is_win else [f"{self.config['fixture_rfid']['port']}:pn532"]
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def open_device(self):
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clf = nfc.ContactlessFrontend()
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for dev in self.dev_list:
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connected = clf.open(dev)
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if connected:
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self.log.info(f"CONNECTED TO {dev}")
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break
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else:
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self.log.info(f"UNABLE TO CONNECT TO {dev}")
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def close_device(self):
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self.clf.close()
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@pyqtSlot()
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def start(self):
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super().start()
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@pyqtSlot()
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def get(self):
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try:
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if not self.connected:
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self.open_device()
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else:
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target = self.clf.sense(RemoteTarget('106A'), RemoteTarget('106B'), RemoteTarget('212F'))
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if target is not None:
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tag = nfc.tag.activate(self.clf, target)
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if tag is not None:
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self.log.debug("tag present")
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if tag.ndef is not None:
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tag_content=tag.ndef.records[0]
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if tag_content!=self.current_data:
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self.log.info(f"new tag detected:{tag_content}")
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self.current_data=tag_content
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self.new_id_signal.emit(self.current_data)
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else:
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self.log.error("tag is not NDEF")
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else:
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self.log.debug("no target present")
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except Exception as e:
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self.log.exception(f"{e}")
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self.connected = False
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