moin
i have indeed to read raw binary data, up to now i have solved this
problem by simply removing the \r when a \r\n (\r is a carriage return,
\n is newline) was received with the match pattern vi and the string
subset vi.
but i've just found out that this is not a solution, the problem
is that labview not only changes a \n to \r\n but it also
changes a \r to \r\n , so i don't know if i've go a \r or an \n when
reading a \r\n, now i have really a problem.
In article ,
Johannes Niess wrote:
> krzysztof8048@my-deja.com writes:
>
> > hi
> > i tried to read data from an eprom over the
> > serial port. this works fine with visa, but
> > for every \10 (linefeed) i read labview inserts
> > a \13 (carriage return). i've no idea how to
> > turn this "feauture" off, tried to change sth.
> > in the property node, but nothing worked.
> > can somebody help me ?
>
> It´s not a big issue with text (A-Z etc) interface languages because
> both normally mean "end of message". Try some of the string functions
> for replacing. I like this VISA "feature", because I don´t have to
count
> bytes to read. Put in a big number and you will get anything
available
> without a timeout.
>
> With a binary (\0..\255) interface you are in trouble. I have to
> address this issue in my own application. Thanks for reminding me.
VISA
> allows message end characters and has a different property for
> switching them on or off. The property node is the right place to
> start searching.
>
> Please tell me the solution.
>
> Johannes Niess
>
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