You can now use Python and our V2X ASN.1 API to easily convert binary V2X messages to text – whether JSON or XML – and vice versa.
Our V2X API is a C++ API, but the latest update provides a Python wrapper that can be used to convert V2X ASN.1-encoded data. There are three classes, each with methods for converting between binary (unaligned PER) and text (JSON or XML), in either direction. The classes are:
- For SAE J2735 DSRC (Dedicated Short Range Communications):
- For ETSI ITS:
- CAM (Cooperative Awareness Message), ETSI EN 302 637-2
- DENM (Decentralized Environmental Notification Message), ETSI EN 302 637-3
The API kit includes a sample Python program that handles things like using files for input/output and working with hexadecimal representations of the binary data, but at the end of the day, the conversion itself is simple, using one of the following function calls:
- binary to JSON:
buf = cls.to_json(inp_data, len(inp_data))
- binary to XML:
buf = cls.to_xml(inp_data, len(inp_data))
- JSON to binary:
buf = cls.from_json(inp_data)
- XML to binary:
cls is one of the provided classes: MessageFrame, CAM, or DENM.)
Download our V2X ASN.1 API and give it try! Be sure to choose one of the 64-bit downloads, as the Python wrapper is not available for 32-bit systems. Full documentation for the API is available on our website and included in the download.