fieldtripbuffer error code

[Robert Oostenveld]

Hi Teris

On 22 Feb 2010, at 10:00, teris tam wrote:

> Dear Fieldtrip experts,
>        I am trying to read event data from fieldtripbuffer in matlab using read_event(), but I receive the following error:
> 
>        ??? ERROR: the buffer returned an error (517)
> 
>        Matlab reported that the error occurred at the line:
> 
>        evt = buffer('get_evt', [], host, port);

This is an error that happens if there are no events in the buffer. In more recent versions, read_event returns an empty array (i.e. []), which is what you woudl expect. 

I suggest that you upgrade to the most recent version.


>         May I ask what does the error code (517) means? Where can I find the list of error code for the fieldtripbuffer?

They are defined (in hexadecimal representation, and not in decimal representation as it is printed) in fieldtrip/realtime/buffer/src/message.h. You can convert them for example here http://easycalculation.com/hex-converter.php?hex=0x0205&hexDeci=NaN&hexBin=0001

The error 517 (decimal) is 0205 (hexadecimal), which means GET_ERR. 

best regards,
Robert



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