The dltreader Python module allows the reading of AUTOSAR ["Diagnostic, Log and Trace Protocol"](https://www.autosar.org/fileadmin/standards/foundation/1-0/AUTOSAR_PRS_DiagnosticLogAndTraceProtocol.pdf) files. files.

The goal of this module is to provide a simple, purely Python-based module to read .dlt files without further dependencies. Apart from that a permissive free software license shall is supported to make it usable in possible commercial contexts.

pip install -U dltreader

from dlt import DltReader

with DltReader("example.dlt") as r:
    for storage_header, packet in r:
        if not packet.has_payload():
            # skip packets that do not have a payload
            continue

        print(packet)

At current point in time the module is a PoC so should not be used in production software; besides, it is only a partial implementation of the overall standard and not optimized for performance.

Please check the docs/ directory for further details.

Python modules for DLT (without claim to be complete):

• https://pypi.org/project/dltpy (requires C++ dependencies)
• https://github.com/r2b1d1/dlt2json (converts DLT to json format)
• https://gitlab.com/Menschel/logging-dlt (similar but using GPL)
• https://pypi.org/project/pydlt (provides also writing of DLT messages)
• ...

Similar projects in other programming languages:

• https://github.com/esrlabs/dlt-reader/
• https://github.com/COVESA/dlt-daemon/
• ...