Its most like the displaying of the data that is using up your CPU
time, if you are talking about CUIBTPDtest.pd. Sliders and other GUI
elements are inefficient with Pd on the Mac. You can help the
situation by using a [speedlim 100] (from maxlib or cyclone) to slow
down the refresh rate.
I've been thinking of making a series of graph-on-parent GUI objects
that have a built-in [speedlim]. Perhaps it would be better if it
was included in the Properties of the object.
.hc
On Jun 17, 2006, at 2:39 PM, Dan Overholt wrote:
well, I guess it is just my old, slow machine (500MHz G4), but
anyway just decoding the analog inputs takes 50% of the cpu, and with the digital inputs also it pegs the cpu... not nice!On Sat, 17 Jun 2006, Hans-Christoph Steiner wrote:
Hey Dan,
How is the [&] object ineffecient? I think its just a straight pass- thru to the C & operator, should it should use little CPU.
It would be easy enough to write something like [bit] for Pd based on [&] which would make the patching easier.
.hc
On Jun 16, 2006, at 9:03 PM, Dan Overholt wrote:
all right, there's an updated version of the PD patch for the Bluetooth CUI on the website now, including the digital inputs: http://www.create.ucsb.edu/~dano/CUI/CUIBTPDtest.pd
using the AND operator in PD seems to be _very_ inneffecient though, if anyone has a better idea, let me know!
-Dan
On Fri, 16 Jun 2006, Hans-Christoph Steiner wrote:
To get bits, use the standard bitwise operators, just like C or
many other languages. Pd has the whole suite: & | >> <<To get the value of a bit, AND it by that bit's value, i.e. the 4th bit would be [& 16]
.hc
On Jun 16, 2006, at 2:00 PM, Dan Overholt wrote:
Hi All,
I've put up an example of using the Bluetooth CUI with PD here: http://www.create.ucsb.edu/~dano/CUI/CUIBTPDtest.pd
The only question is how to get at the individual bits within the last 2 received bytes to decode the digital inputs from the CUI. In Max/ MSP, there is an 3rd party external called [bit] that does this... any suggestions?
All the best, -Dan
-- Dan Overholt -- http://www.create.ucsb.edu/~dano Center for Research in Electronic Art Technology, UCSB
On Fri, 16 Jun 2006, Alexandre Quessy wrote:
Hello Pure Data friends,
We are currently trying to make the Bluetooth CUI work with PD.
The Bluetooth Create Usb Interface is the wireless version of the USB CUI, a 13 analog/10 bits and 12 digital I/O interface for
sensors. The BTCUI is perfect for embbeded applications like dance, performance, music etc. It's one of the cheapest and smallest wireless interface on the market, and it is Open Hardware !The USB CUI works all right with PD, with HID tools. We use the [hid] external from PD-Extended 0.39.RC4 (on Mac).
Unfortunately, we didn't succeeded to make the BluetoothCUI
working with PD. We have tried [comport] and [hid]. The BTCUI works perfectly on Max/MSP (demo version), as announced by Dan Overholt, its creator. His patch is downloadable at http://www.create.ucsb.edu/~dano/CUI/BlueCUItestRev2.zip and uses the [serial] object of Max/MSP.The protocol of the CUI is probably similar to the one used by joysticks and such. It consists in a serie of integers with delimiters, the several remaining integers beings the values that the device sends to the computer. See the attached PD patches. Below are out two PD patches. The first one uses [hid] and works with
the USB CUI, but not over BlueTooth. (Apple does serial port
emulation) The second uses [comport] and almost work. The CUI LED lights up,
so it means that it is sending data, but most often, dumping the data from [comport]'s outlet give us nothing.Would you have any idea of what is missing to imitate, and make even better than the [serial] Max/MSP object ? Otherwise, would it be easier on Linux ?
JN and
--
Man has survived hitherto because he was too ignorant to know
how to realize his wishes. Now that he can realize them, he must either change them, or perish. -William Carlos Williams-- Dan Overholt -- http://www.create.ucsb.edu/~dano Center for Research in Electronic Art Technology, UCSB
If you are not part of the solution, you are part of the problem. - Eldridge Cleaver
-- Dan Overholt -- http://www.create.ucsb.edu/~dano Center for Research in Electronic Art Technology, UCSB
If nature has made any one thing less susceptible than all others of
exclusive property, it is the action of the thinking power called an
idea, which an individual may exclusively possess as long as he keeps
it to himself; but the moment it is divulged, it forces itself into
the possession of everyone, and the receiver cannot dispossess
himself of it. - Thomas Jefferson
-
Hans-Christoph Steiner