- 1 year ago
Decoding Raw NFC Payload
To decode a raw NFC payload, you can use the ndef
module provided by the nfcpy
library in Python. Here's an example of how to decode an NFC payload:
pythonimport nfc
import ndef
def decode_nfc_payload(data):
# Create an NDEF message object from the raw data
message = ndef.Message(data)
decoded_payload = []
for record in message:
# Check the type of record
if isinstance(record, ndef.TextRecord):
# Decode text record
decoded_payload.append(record.text)
elif isinstance(record, ndef.UriRecord):
# Decode URI record
decoded_payload.append(record.uri)
elif isinstance(record, ndef.SmartPoster):
# Decode Smart Poster record
decoded_payload.append(record.title.text)
else:
# Handle other record types as needed
decoded_payload.append("Unsupported record type")
return decoded_payload
# Example raw NFC payload
raw_payload = b'\xd1\x01\x10u\x04enUS\xd101\xe1\x07com.openai.gpt3.5-\x04Chat'
# Decode the raw NFC payload
decoded_payload = decode_nfc_payload(raw_payload)
# Print the decoded payload
for record in decoded_payload:
print(record)
In this example, we define the decode_nfc_payload()
function that takes the raw NFC payload data as input. We create an ndef.Message
object from the raw data.
We iterate over each record in the message and check its type. If it's a TextRecord
, we decode it using the text
attribute. If it's a UriRecord
, we decode it using the uri
attribute. If it's a SmartPoster
, we decode the title using the title.text
attribute. You can handle other record types as needed by adding appropriate checks and decoding methods.
The decoded payload is stored in the decoded_payload
list. Finally, we print each record in the decoded payload.
Note that this example uses the nfcpy
library for NFC communication and decoding. Make sure to install the nfcpy
library before running the code:
pip install nfcpy
Also, keep in mind that NFC payloads can have various formats and structures depending on the data encoded and the NFC tag type used. You may need to adjust the decoding logic to handle specific payload structures or record types relevant to your use case.