[amsat-bb] Error accessing FunCube Pro from FoxTelem

Chris Thompson g0kla at arrl.net
Fri Jan 31 16:18:52 UTC 2020 

There is a "predict" src folder that has FoxTelem specific stuff in it as I
remember.  There should not be a predict4java folder.  You should just need
the jar file.  It's a slightly custom build of predict4java that includes
Doppler calculations.

73
Chris

On Thu, Jan 30, 2020 at 5:51 PM Joseph Armbruster <
josepharmbruster at gmail.com> wrote:

> No GroundStationSatellite in master.  Hence why I ask.
>
> Joe
>
> On Thu, Jan 30, 2020 at 5:45 PM Joseph Armbruster <
> josepharmbruster at gmail.com> wrote:
>
>> Chris,
>>
>> There's a predict4java source folder and a predict4java.jar?
>>
>> Which is the correct one to use? :-)
>>
>> Joseph Armbruster
>>
>> On Thu, Jan 30, 2020 at 5:17 PM Joseph Armbruster <
>> josepharmbruster at gmail.com> wrote:
>>
>>> Chris,
>>>
>>> What version of the fun cube pro do you have, and does it make a
>>> difference which one is used?  I have an older v1.1 that I'm going to
>>> connect in a few (Serial 3354).  Pulling the code down now...
>>>
>>> Joseph Armbruster
>>> KJ4JIO
>>>
>>> On Thu, Jan 30, 2020 at 9:58 AM Chris Thompson <g0kla at arrl.net> wrote:
>>>
>>>> A couple of people sent out the git repo URL.  If you have time to look
>>>> at this, that would be great.  It's not an area where I am a deep expert.
>>>> The FCD has two USB interfaces, as noted.  The Soundcard interface uses
>>>> standard Audio IO APIs and works fine. USB access is transparent and you
>>>> don't need to worry about it.  But the HID interface has been difficult.
>>>> It was a great idea to not need any libraries, but the flip side issue is
>>>> that every platform has its own libraries.  Writing a single application
>>>> that works on the PI (ARM), Linux (x86), Mac, Windows has been difficult in
>>>> this area.  The HID approach is great for the end user, difficult for the
>>>> developer.
>>>>
>>>> I've used three different libraries so far.  I started with direct Java
>>>> wrapping of the C libraries. It worked to a degree in Windows, but I
>>>> struggled on other platforms.  I moved to the PureJavaHID library and that
>>>> worked across platforms.  But it holds the connection so only one program
>>>> could connect to the device.  It did not play well with the Funcube
>>>> Dashboard for example.  And it had issues where commands would not be
>>>> sent.  I'm now using usb4Java which wraps LibUSB.  I understand you can
>>>> talk HID through LibUSB, which is just a lower level library. But I could
>>>> be wrong.  I leveraged code that Denis Sheirer wrote for SDRTRunk.  But
>>>> that also has strange difficult to track down issues, as we can see.
>>>>
>>>> So I am open to a better way to do this that works on all the platforms
>>>> people are using.  Any help is really appreciated.
>>>>
>>>> 73
>>>> Chris
>>>>
>>>>
>>>> On Wed, Jan 29, 2020 at 12:13 PM Joseph Armbruster via AMSAT-BB <
>>>> amsat-bb at amsat.org> wrote:
>>>>
>>>>> Stephen,
>>>>>
>>>>> If someone shoots me a link to the foxtelem code, I'll gladly help
>>>>> debug
>>>>> it.  I have a Funcube dongle Pro here I can use.
>>>>>
>>>>> Joseph Armbruster
>>>>>
>>>>>
>>>>> On Wed, Jan 29, 2020 at 7:30 AM Stephen E. Belter <seb at wintek.com>
>>>>> wrote:
>>>>>
>>>>> > Joe,
>>>>> >
>>>>> > I believe the FUNcube dongle uses *two* virtual USB interfaces over
>>>>> the
>>>>> > single physical USB port.  The IQ stream looks like a standard sound
>>>>> card
>>>>> > and is one of the virtual USB interfaces.
>>>>> >
>>>>> > The control functions like frequency, preamp gain, etc., use the
>>>>> standard
>>>>> > HID (Human Interface Device) interface, USB-HID.
>>>>> >
>>>>> > Jim's problem is unusual, but I have the same problem with FoxTelem
>>>>> on my
>>>>> > Windows 10 machines.  I haven't discovered a solution, yet.
>>>>> >
>>>>> > 73, Steve N9IP
>>>>> > --
>>>>> > Steve Belter, seb at wintek.com
>>>>> >
>>>>> >
>>>>> > On 1/28/20, 10:00 PM, "AMSAT-BB on behalf of Joseph Armbruster via
>>>>> > AMSAT-BB" <amsat-bb-bounces at amsat.org on behalf of
>>>>> amsat-bb at amsat.org>
>>>>> > wrote:
>>>>> >
>>>>> >     Lib USB!? I thought Howard told me at the symposium (circa 2008)
>>>>> that
>>>>> > they
>>>>> >     were using usb-hid ?!?!?
>>>>> >
>>>>> >     Howard...?  Or was that on the hardware-side?
>>>>> >
>>>>> >     Joseph Armbruster
>>>>> >     KJ4JIO
>>>>> >
>>>>> >     On Tue, Jan 28, 2020 at 9:27 PM James Jipping via AMSAT-BB <
>>>>> >     amsat-bb at amsat.org> wrote:
>>>>> >
>>>>> >     > Good Evening!
>>>>> >     > While attempting to use my FunCube Pro directly from FoxTelem
>>>>> I get
>>>>> > an
>>>>> >     > error:
>>>>> >     > LIBUSB_ERROR_NOT_FOUND.   An internet search has found
>>>>> mentions of
>>>>> > the
>>>>> >     > error but no solutions for my situation.  I am using Windows
>>>>> 10 for
>>>>> > the
>>>>> >     > OS on my comupter.   Any thoughts or suggestions ??
>>>>> >     >
>>>>> >     > By the way, I use SDRConsole and feed the audio via VB_Audio
>>>>> Virtual
>>>>> >     > Cable with GREAT results.  I even have RSDConsole with WispDDE
>>>>> > running
>>>>> >     > the antenna rotor controller.  I thought I would try the
>>>>> direct feed
>>>>> >     > FoxTelem- to-FunCube before I set up My Raspberry Pi for
>>>>> > "Fox-in-a-Box"
>>>>> >     >
>>>>> >     > One last question, while I'm here:  Is there any way FoxTelem
>>>>> without
>>>>> >     > SDRConsol, with a DDE program , could run the rotor controller?
>>>>> >     >
>>>>> >     > Thank you for you help.
>>>>> >     >
>>>>> >     > Jim Jipping, W8MRR
>>>>> >     > AMSAT # 5512
>>>>> >     > _______________________________________________
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>>>>> >
>>>>> _______________________________________________
>>>>> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>>>>> to all interested persons worldwide without requiring membership.
>>>>> Opinions expressed
>>>>> are solely those of the author, and do not reflect the official views
>>>>> of AMSAT-NA.
>>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
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>>>>>
>>>>
>>>>
>>>> --
>>>> Chris E. Thompson
>>>> chrisethompson at gmail.com
>>>> g0kla at arrl.net
>>>>
>>>

-- 
Chris E. Thompson
chrisethompson at gmail.com
g0kla at arrl.net

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