ATECC508A.Transport.request

You're seeing just the function request, go back to ATECC508A.Transport module for more information.
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request(arg, payload, timeout, response_payload_len)

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Specs

request(t(), binary(), non_neg_integer(), non_neg_integer()) ::
  {:ok, binary()} | {:error, atom()}

Send a request to the ATECC508A and wait for a response

This is the raw request. The transport implementation takes care of adding and removing CRCs.