ODX in AUTOSAR (DEXT Module)

"""Demonstrate DEXT-to-ODX transformation concepts."""
from dataclasses import dataclass
from typing import List

@dataclass
class AutosarDcmDid:
    """Represents a DCM DID configuration element."""
    did_id: int         # e.g. 0xF401
    short_name: str     # e.g. "VehicleSpeed"
    data_length: int    # bytes
    session: str        # "DEFAULT" | "EXTENDED" | "PROGRAMMING"
    security_level: int # 0 = no security

def generate_odx_rdbi(did: AutosarDcmDid) -> str:
    """Generate ODX DIAG-COMM XML fragment for a RDBI DID."""
    return f"""<DIAG-COMM ID="DC_RDBI_{did.short_name}" xsi:type="REQUEST-RESPONSE-COMM">
  <SHORT-NAME>ReadDataByIdentifier_{did.short_name}</SHORT-NAME>
  <REQUEST ID="REQ_RDBI_{did.short_name}">
    <PARAMS>
      <PARAM xsi:type="CODED-CONST" BYTE-POSITION="0">
        <SHORT-NAME>SID</SHORT-NAME>
        <CODED-VALUE>0x22</CODED-VALUE>
      </PARAM>
      <PARAM xsi:type="CODED-CONST" BYTE-POSITION="1">
        <SHORT-NAME>DataIdentifier</SHORT-NAME>
        <CODED-VALUE>0x{did.did_id:04X}</CODED-VALUE>
      </PARAM>
    </PARAMS>
  </REQUEST>
  <AUDIENCE>
    <ENABLED-IN-DIAG-SESSIONS>
      <DIAG-SESSION-REF ID-REF="DS_{did.session}Session"/>
    </ENABLED-IN-DIAG-SESSIONS>
  </AUDIENCE>
</DIAG-COMM>"""