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Extract valid CARD_UID from NTAG215 cards #251

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Merged
paxx12 merged 1 commit into from
Feb 7, 2026
Merged

Extract valid CARD_UID from NTAG215 cards #251

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20 changes: 12 additions & 8 deletions ...e-extended/13-rfid-support/root/home/lava/klipper/klippy/extras/filament_protocol_ndef.py
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Original file line number Diff line number Diff line change
Expand Up @@ -28,11 +28,15 @@ def xxd_dump(data, max_lines=16):

def ndef_parse(data_buf):
if None == data_buf or isinstance(data_buf, (list, bytes, bytearray)) == False:
return NDEF_PARAMETER_ERR, []
return NDEF_PARAMETER_ERR, [], []

try:
data = bytes(data_buf) if isinstance(data_buf, list) else data_buf

card_uid = []
if len(data) >= 8:
card_uid = [data[0], data[1], data[2], data[4], data[5], data[6], data[7]]

logging.info("NDEF RFID data:")
logging.info("\n" + xxd_dump(data))

Expand Down Expand Up @@ -118,13 +122,13 @@ def ndef_parse(data_buf):
data_io.seek(tlv_len, 1)

if not records:
return NDEF_NOT_FOUND_ERR, []
return NDEF_NOT_FOUND_ERR, [], card_uid

return NDEF_OK, records
return NDEF_OK, records, card_uid

except Exception as e:
logging.exception("NDEF parsing failed: %s", str(e))
return NDEF_ERR, []
return NDEF_ERR, [], []

def parse_color_hex(value):
try:
Expand All @@ -135,7 +139,7 @@ def parse_color_hex(value):
except (ValueError, TypeError):
return 0xFFFFFF

def openspool_parse_payload(payload):
def openspool_parse_payload(payload, card_uid=[]):
if None == payload or not isinstance(payload, (bytes, bytearray)):
logging.error("OpenSpool payload parsing failed: Invalid payload parameter")
return filament_protocol.FILAMENT_PROTO_PARAMETER_ERR, None
Expand Down Expand Up @@ -218,7 +222,7 @@ def openspool_parse_payload(payload):
info['MF_DATE'] = '19700101'
info['RSA_KEY_VERSION'] = 0
info['OFFICIAL'] = True
info['CARD_UID'] = []
info['CARD_UID'] = card_uid

return filament_protocol.FILAMENT_PROTO_OK, info

Expand All @@ -230,7 +234,7 @@ def openspool_parse_payload(payload):
return filament_protocol.FILAMENT_PROTO_ERR, None

def ndef_proto_data_parse(data_buf):
error, records = ndef_parse(data_buf)
error, records, card_uid = ndef_parse(data_buf)

if error != NDEF_OK:
logging.error(f"NDEF parse failed: NDEF parsing error (code: {error})")
Expand All @@ -246,7 +250,7 @@ def ndef_proto_data_parse(data_buf):

if mime_type == 'application/json':
logging.info(f"Detected OpenSpool format, parsing payload ({len(payload)} bytes)")
error_code, info = openspool_parse_payload(payload)
error_code, info = openspool_parse_payload(payload, card_uid)
if error_code != filament_protocol.FILAMENT_PROTO_OK:
logging.error(f"OpenSpool parse failed: Payload parsing error (code: {error_code})")
continue
Expand Down