[erlang-questions] segments of variable length

Richard Andrews <>
Sat Apr 4 12:52:13 CEST 2009




> -module(aa).
> -define(X,<<131,107,0,18,36,65,86,82,77,67,44,49,50,51,52,44,49,53,49,55,51,54>>).
> -export([start/0]).
> 
> start()->
>    case binary_to_term(?X) of 
>         {<>}->
>          io:format("Header = ~s~n",[H]),
>          io:format("Unit ID = ~s~n",[U]),
>          io:format("Time = ~s~n",[T])
>     end.
> 
> This gives me an error.
> I was waiting for
> Header = $AVRMC
> Unit ID = 1234
> Time =  151736


As a first experiment I would suggest something like the following
(have not tested that this compiles)


%% Simulate sending side
X = term_to_binary( {myTag, H, U, T} ),

%% Receiving side
case binary_to_term(X) of
    {myTag, H, U, T} ->
        process_myTag( H, U, T );
    _ -> error
end.


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