Submitted an issue to PJC at 
here: https://github.com/nyholku/purejavacomm/issues/78

On Wednesday, December 23, 2015 at 8:37:06 PM UTC-8, Ytai wrote:
>
> The developer of pjc is familiar with the IOIO and you can reach him on 
> his mailing list and tell him that El Capitan seems to have broken 
> something. If you end up getting to many questions that you can't answer, 
> send me a link to the thread and I'll chime in.
> Thanks!
> On Dec 23, 2015 8:33 PM, "Xing Hu" <[email protected] <javascript:>> 
> wrote:
>
>> I'd like to do it myself lol but still need some pointers from you... Any 
>> suggestion to do next?
>>
>> Best Regards,
>> Xing
>>
>> On Wed, Dec 23, 2015 at 8:32 PM, Ytai Ben-Tsvi <[email protected] 
>> <javascript:>> wrote:
>>
>>> You can either do this yourself or wait a few days until I'm back home.
>>> On Dec 23, 2015 8:04 PM, "Xing Hu" <[email protected] <javascript:>> 
>>> wrote:
>>>
>>>> Oh, yeah, right... Still no related search results popped out... Should 
>>>> we open an issue to them? 
>>>>
>>>> Best Regards,
>>>> Xing
>>>>
>>>> On Wed, Dec 23, 2015 at 7:57 PM, Ytai Ben-Tsvi <[email protected] 
>>>> <javascript:>> wrote:
>>>>
>>>>> Purejavacomm
>>>>> On Dec 23, 2015 7:52 PM, "Xing Hu" <[email protected] <javascript:>> 
>>>>> wrote:
>>>>>
>>>>>> PJC stands for "Pluggable Java Components" right? A little out of my 
>>>>>> knowledge range lol... Googled "Pluggable Java Components El Capitan" 
>>>>>> and 
>>>>>> got no related news.
>>>>>>
>>>>>> Reading about PJC now...
>>>>>>
>>>>>> Best Regards,
>>>>>> Xing
>>>>>>
>>>>>> On Wed, Dec 23, 2015 at 7:48 PM, Ytai Ben-Tsvi <[email protected] 
>>>>>> <javascript:>> wrote:
>>>>>>
>>>>>>> Cool. Then it's almost certainly a PJC issue. You can check with 
>>>>>>> them regarding El Capitan compatibility, or I will as soon as I get 
>>>>>>> back 
>>>>>>> from vacation :)
>>>>>>> On Dec 23, 2015 7:46 PM, "Xing Hu" <[email protected] <javascript:>> 
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Yes. I tried "screen /dev/tty.usbmodem1421" and got:
>>>>>>>>
>>>>>>>> IOIOSPRK0020IOIO0400IOIO0506
>>>>>>>>
>>>>>>>> Best Regards,
>>>>>>>> Xing
>>>>>>>>
>>>>>>>> On Wed, Dec 23, 2015 at 7:43 PM, Ytai Ben-Tsvi <[email protected] 
>>>>>>>> <javascript:>> wrote:
>>>>>>>>
>>>>>>>>> And did you try with screen?
>>>>>>>>> On Dec 23, 2015 7:24 PM, "Xing Hu" <[email protected] 
>>>>>>>>> <javascript:>> wrote:
>>>>>>>>>
>>>>>>>>>> Tested purejavacomm 0.28 and 0.29 (latest), still not working. 
>>>>>>>>>> Also tried upgrading JNA to latest 4.2.1, not helping. 
>>>>>>>>>>
>>>>>>>>>> Lol...
>>>>>>>>>>
>>>>>>>>>> On Wednesday, December 23, 2015 at 2:36:41 PM UTC-8, Ytai wrote:
>>>>>>>>>>>
>>>>>>>>>>> One experiment you can do is to try an build HelloIOIO yourself, 
>>>>>>>>>>> but override the purejavacomm dependency to use the latest version.
>>>>>>>>>>> Otherwise, I'll look at it in a few days.
>>>>>>>>>>> On Dec 23, 2015 1:17 PM, "Xing Hu" <[email protected]> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Well it is very likely to relate with some changes in the 
>>>>>>>>>>>> latest OSX. IOIO was successfully connected and upgraded to the 
>>>>>>>>>>>> 5.06 
>>>>>>>>>>>> firmware with my Raspberry pi. So it rules out the doubt on the 
>>>>>>>>>>>> board 
>>>>>>>>>>>> itself and related software. The only obvious variant in this 
>>>>>>>>>>>> experiment is 
>>>>>>>>>>>> operating system.
>>>>>>>>>>>>
>>>>>>>>>>>> On Wednesday, December 23, 2015 at 12:21:29 PM UTC-8, Ytai 
>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>> Does the IOIO enumerate correctly, i.e. does the usbmodem file 
>>>>>>>>>>>>> appear when you connect? If so, can you try to open this virtual 
>>>>>>>>>>>>> file using 
>>>>>>>>>>>>> a terminal program such as 'screen' and let me know whether you 
>>>>>>>>>>>>> get any 
>>>>>>>>>>>>> output? It's possible that the new version of osx changed 
>>>>>>>>>>>>> something that's 
>>>>>>>>>>>>> causing the PJC library that's used by the IOIO libraries and 
>>>>>>>>>>>>> tools to 
>>>>>>>>>>>>> access the virtual serial port from java to break.
>>>>>>>>>>>>> On Dec 23, 2015 3:48 AM, "Xing Hu" <[email protected]> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>>> Tried HelloIOIOConsole.jar from the App 330 package (since 
>>>>>>>>>>>>>> I'm running an IOIO with 3.30 firmware):
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> [D/IOIOConnectionRegistry] Successfully added bootstrap 
>>>>>>>>>>>>>> class: ioio.lib.pc.SerialPortIOIOConnectionBootstrap
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> [D/SerialPortIOIOConnectionBootstrap] Adding serial port 
>>>>>>>>>>>>>> /dev/tty.Bluetooth-Incoming-Port
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> [D/IOIOImpl] Waiting for IOIO connection
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> [V/IOIOImpl] Waiting for underlying connection
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> [V/IOIOImpl] Waiting for handshake
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> And hangs all the time at there. Seems to me that I can not 
>>>>>>>>>>>>>> establish connection with IOIO board.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> On Monday, December 21, 2015 at 9:26:07 PM UTC-8, Xing Hu 
>>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Symptom: after typed "./ioiodude 
>>>>>>>>>>>>>>> --port=/dev/tty.usbmodem1411 versions", nothing happens no 
>>>>>>>>>>>>>>> matter how long 
>>>>>>>>>>>>>>> I wait.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> "./ioiodude" works OK with usage instructions.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Tried:
>>>>>>>>>>>>>>> 1. Different micro usb lines (look like this 
>>>>>>>>>>>>>>> <https://en.wikipedia.org/wiki/USB#/media/File:USB_Micro_B.svg> 
>>>>>>>>>>>>>>> so I suppose they are Micro-B)
>>>>>>>>>>>>>>> 2. Different usb ports (identified as usbmodem1411 at left 
>>>>>>>>>>>>>>> side port while usbmodem1421 at right side port)
>>>>>>>>>>>>>>> 3. Different Macbook (mine and my wife's, however, both at 
>>>>>>>>>>>>>>> El Capitan)
>>>>>>>>>>>>>>> 4. Different JDK versions, from 6 to 8, all 64bits.
>>>>>>>>>>>>>>> 5. Host switch at "A" and at "H".
>>>>>>>>>>>>>>> 6. CHG at different position (yes I'm desperate...).
>>>>>>>>>>>>>>> 7. Boot in bootloader mode and application mode 
>>>>>>>>>>>>>>> 8. sudo
>>>>>>>>>>>>>>> 9. "./ioiodude --port=/dev/tty.usbmodem1411 --reset write 
>>>>>>>>>>>>>>> xxxx.ioioapp" (desperate)
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> None working....
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Any suggestion? 
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Thanks!
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>  
>>>>>>>>>>>>>>>
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