</programlisting>
<para>
For advanced programmers the
- function <link linkend="func-ref-comedi-comedi-get-buffer-contents"><function>comedi_get_buffer_contents</function></link>
+ function <link linkend="func-ref-comedi-get-buffer-contents"><function>comedi_get_buffer_contents</function></link>
is useful to check if there is actually data in the ringbuffer
so that a call of <function>read</function> can be avoided for example
when the data readout is called by a timer call-back function.