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doc/other.xml, reference.xml: Slowly varying inputs and comedi triggers

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Mention that the stuff that relies on the COMEDI_TRIG ioctl, including
the slowly varying input (comedi_sv_...) functions no longer work with
current versions of the Comedi kernel layer.
This commit is contained in:
Ian Abbott 2012-05-04 18:45:33 +01:00
parent 8fae5ac58c
commit df4d8963de
2 changed files with 9 additions and 3 deletions
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6
doc/other.xml
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@ -1259,6 +1259,12 @@ do not have infinitely sharp cutoffs.
Slowly-varying inputs
</title>
<para>
<emphasis role="strong">Note: The functions described here use an old
feature that is no longer implemented by the &comedi;
kernel layer. THEY WILL NOT WORK!</emphasis>
</para>
<para>
Sometimes, your input channels change slowly enough that
you are able to average many successive input values to get a

6
doc/reference.xml
View file

@ -368,7 +368,7 @@ struct comedi_trig_struct{
The <type>comedi_trig</type> structure is a control structure used by the
<constant>COMEDI_TRIG</constant> ioctl, an older method of communicating
instructions to the driver and hardware. Use of <type>comedi_trig</type> is
deprecated, and should not be used in new applications.
deprecated, and is no longer implemented by the &comedi; kernel layer.
</para>
</section>
@ -399,8 +399,8 @@ struct comedi_sv_struct{
<para>
The <type>comedi_sv_t</type> structure is used by the <function>comedi_sv_&hellip;</function>
functions to provide a simple method of accurately measuring
slowly varying inputs. See the relevant section for more
details.
slowly varying inputs. This relies on the <constant>COMEDI_TRIG</constant>
ioctl and is no longer by the &comedi; kernel layer.
</para>
</section>