Q&A about pyais HOT 8 CLOSED

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P.S. libais, which is kinda out of date, seems to be able to decode every message type. Could you use that as a guide?

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Hey there,

pyais supports multi line messages. A simple example can be found here

Regarding your question of supported messages:

It supports all message types. But it can not decode message specific payloads. This should be done by the user.

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This applies to messages of type 6, 8, 25, and 26. These messages have in common, that they contain unspecified binary payload.

• Message type 6: data field with up to 920 bits of binary payload
• Message type 8: data field with up to 952 bits of binary payload
• Message type 26: data field with up to 128 bits of binary payload
• Message type 27: data fiield with up to 1004 bits of binary payload

The decoding of the binary payload is message dependent and varies between different systems. If we want to decode the binary payload of message type 6, we firstly would have to look at the dac (Designated Area Code) and the fid (Functional ID). Dependening of their values, we would know, how to interpret the payload.

There are a lot of different application-specific messages, which are more or less standardized. Therefore pyais does not even try to decode the payload. Instead, you can access the raw payload as a bit-string or a bitarray.

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You are totally right. I will do this as soon as I can. I'll keep this issue open until then as a reminder for myself.

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Closed with #35.

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