Point-By-P​oint filtering for Blackfin

Hi,
I am evaluating the embedded module for blackfin for a project, where i need to do some real-time-filtering during ADC.
In normal LabVIEW  (not for an embedded target) I would do this using PointByPoint-filters. But as these VIs all seem to use floating point data types, they are not really suitable for my application.
I couldn't find any way to do point-by-point-filtering using the blackfin-optimized VIs by now. So my question is, if there are any blackfin-specific point-by-point VIs that I just did not see (perhaps not available in the evaluation version?) or if there is any other way to accomplish real-time-filtering with the existing VIs.
Thanks,
Jan

Hi John,
The “Inverse Chebyshev Filter PtByPt.vi” is reentrant. When you
open the SubVI, the title should say “clone” in parentheses. Each clone runs in
its own memory space. You cannot modify a reentrant VI unless you close all
referencing VIs.
The “Inverse Chebyshev Filter PtByPt.vi” is also part of a LabVIEW
library. (C:\Program Files\National Instruments\LabVIEW 8.5\vi.lib\ptbypt\NI_PtbyPt.lvlib).
This Library is password protected. Also you do not want to modify something
shipped as standard along with LabVIEW.
There is a way around this though. Open the “NI_PtbyPt.lvlib”.
From the menu select File >> Save As. This will duplicate the entire
Library to a new location. Now open the copy “Inverse Chebyshev Filter
PtByPt.vi” and modify it to use Inv Chebyshev co-effecients. You can now use
this modified SubVI. I did try this (in LabVIEW 8.5) and the outputs of the
Point by Point and Array functions were the same in your Demo program.
Again, I cannot comment if this is a bug in LabVIEW or we
are missing something. It would be best to contact NI or wait for someone from
NI to comment on this forum.

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