Module candump 

CAN logs written by candump, decoded with DBC files.

Each line is one frame: (1436509052.249713) can0 123#DEADBEEF as candump -l and -L write it (## for CAN FD, #R for a remote request), or the default can0 123 [4] DE AD BE EF, with or without a (timestamp) in front. One pass records where each frame’s line starts and its id and interface; the raw table is then read line by line where it is shown, from a map of the file.

With a DBC file (crate::dbc) that names the log’s messages, each message is a table of its own: ts and a column per signal, with units, value names as text, and a multiplexed signal null in the frames its multiplexer does not select. The home screen lists them, with the raw frames and a long signals table of every decoded value (ts, message, signal, value, unit).

Structs

Decoded

One message’s frames, decoded by its DBC entry.

Frame

One frame, as a line gives it.

Index

What one pass over a candump log found.

Layers

The DBC files a log is read with, in order: the search path’s, then each --dict.

Listing

What a log’s frames resolve to under its layers: each message with frames, the rows of its frames.

RawFrames

The raw table: a row per frame, read from its line where it is shown.

Enums

Open

What opening a candump log finds.

Constants

FRAMES

The raw table, and the long table of decoded values.

SIGNALS

Functions

index

Index the candump log in data: one pass, start to end.

indexed

The index of the candump log at path, made by one pass or kept from one.

listed

The tables the log at path was last listed with, for the home screen.

looks_like

Whether head begins a candump log: its first line that is not blank is a frame.

open

Open the candump log at path with layers: the table wanted names, its frames when no DBC names its messages, or the list.

parse_line

Parse one line, as candump -l writes it or as candump prints it.