[PD] Re: BlueTooth CUI : using [comport] or [hid]

[Hans-Christoph Steiner]

How about creating externals/hardware/cui in CVS and adding this there?

As for the usage of CPU, because its a fast bitrate, it will always  
use a noticeable amount of CPU time.  Mouse data is another example  
of a high-speed data stream.  IIRC, a lot of mouse pointer processing  
is handled by the graphics card for this reason.

.hc

On Jun 22, 2006, at 1:41 AM, Alexandre Quessy wrote:

> Hi all,
>
> This is a little PD abstraction I made out of Dan`s patch. Thanks for
> the help in decoding that list of floats. Now I see why serial lines
> of fixed length is easier than variable length !
>
> In the tarball, there is also a screenshot of the blueCUI output using
> comport, as requested by Thomas. (maybe too late now, as it works
> perfectly now) It is a screenshot as there is no obvious way to
> copy-paste the PD window`s output in OSX.
>
> Also, comport is still using much of the CPU. Maybe a lower data rate
> would be suitable.
>
> regards,
> aalex
>
>
>
>
> On 6/17/06, Dan Overholt <dano at create.ucsb.edu> 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
>>
>>
>
>
> -- 
> Alexandre Quessy
> http://alexandre.quessy.net
> <blueCUI-2006-06-22.tar>


------------------------------------------------------------------------

Terrorism is not an enemy.  It cannot be defeated.  It's a tactic.   
It's about as sensible to say we declare war on night attacks and  
expect we're going to win that war.  We're not going to win the war  
on terrorism.        - retired U.S. Army general, William Odom