Annika Backstrom
e5c4923609
This version of pi-rc522 gives us a wait_for_tag() method, greatly reducing CPU usage.
30 lines
528 B
Python
30 lines
528 B
Python
from pirc522 import RFID
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import RPi.GPIO as GPIO
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import sys
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import signal
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GPIO.setwarnings(False)
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rdr = RFID()
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def sigint_handler(signal, frame):
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rdr.cleanup()
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sys.exit(0)
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signal.signal(signal.SIGINT, sigint_handler)
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signal.signal(signal.SIGTERM, sigint_handler)
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while True:
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rdr.wait_for_tag()
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(error, tag_type) = rdr.request()
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if not error:
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(error, uid) = rdr.anticoll()
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if not error:
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tag_id = ''.join(hex(x)[2:].zfill(2) for x in uid)
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print(tag_id)
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sys.stdout.flush()
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rdr.cleanup()
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