Inofficial BlackBox 2.0

From: [at]} <Wojtek>
Date: Sun, 18 Nov 2007 21:43:59 -0500

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Marco:

  I am not sure it is a good idea to branch off a new version
of BlackBox competing for manpower and resorces with the main branch.
Anyone who is attracted to your branch will face an incompatibility
problem. It is therefore not realistic to expect the community
to support your effort. Sorry for expressing a discouraging
opinion.

On the other hand, looking at your website I am thrilled to see
a phrase "Truly Cooperative Real Multi Tasking". I have not looked
into the details, but I know from experience that the present tasking
system is an elegant, but somewhat undercooked part of the official
BlackBox. I have two major problems with the current official BlackBox
tasking system:

1) The tasking system is activated with only 20 Hz frequency, which can be
improved to about 100 Hz by recompiling the BlackBox. It is a bit slow,
compared with, for example, USB-2, where the USB frames are acquired
every millisecond. I have been able to process data from a slow A/D
converter with BlackBox, but a somewhat faster A/D converter is presenting
a problem. It would be good if the tasking system was called at higher
frequency. I know that Dough Danforth looked into using a Windows
1-ms timer, but I am not sure, how far he went in this direction.

2) The tasking system freezes when one depresses a mouse button.
It is plain not acceptable to stop the data acquisition when using
the mouse.

I do not know if you have addressed these problems.

I am hoping that your solutions, if they are sound, will find a way
into the official release. I am advocating that you join Oberon
Microsystems this way or another and that both branches are merged into
one.

Thank you for your effort!

Wojtek


On Sat, 17 Nov 2007, Marco Ciot wrote:

> That is my branch of BlackBox where I have extended many things
> and done so in an elegant fashion.
> If you'd like to have a look at it: http://blackbox.ciot.org
> I had some time ago considered opening a separate mailing list
> in order to push BB 2.0.
> I didn't do it until now due to lack of interest.
> Best regards
> Marco

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Received on Mon Nov 19 2007 - 03:43:59 UTC