Linux: "Detected no devices" despite device showing up in syslog and lsusb

[pyksy]

Hi all!

My FluxEngine device is no longer detected by the software. It's been a couple of years since I last used it, and it did work back then.

Any idea what's could be the problem here? Also let me know if there's anything I can do to help debug the issue.

Preface:
I am running Debian Sid on amd64 platform. Required deb packages have been installed. Hardware has been programmed with the latest release zip .hex file.

Steps to reproduce:

1. git clone the repository (current commit as of now is 7db49ae)
2. cd fluxengine; make
3. Plug in the hardware, which gets recognized as per syslog:
   -8<-
   Aug 17 14:22:25 hanuri vmunix: [14342569.373642] usb 5-3.4: new full-speed USB device number 54 using xhci_hcd
   Aug 17 14:22:25 hanuri vmunix: [14342569.552211] usb 5-3.4: New USB device found, idVendor=1209, idProduct=6e00, bcdDevice= 0.01
   Aug 17 14:22:25 hanuri vmunix: [14342569.552217] usb 5-3.4: New USB device strings: Mfr=2, Product=1, SerialNumber=128
   Aug 17 14:22:25 hanuri vmunix: [14342569.552219] usb 5-3.4: Product: FluxEngine
   Aug 17 14:22:25 hanuri vmunix: [14342569.552220] usb 5-3.4: Manufacturer: Cowlark Technologies
   Aug 17 14:22:25 hanuri vmunix: [14342569.552221] usb 5-3.4: SerialNumber: C401021715032874
   -8<-
   and:
   -8<-
   $ lsusb | grep FluxEngine
   Bus 005 Device 053: ID 1209:6e00 Generic FluxEngine
   -8<
4. Run the compiled binary to detect FluxEngine devices

Actual result:
No devices detected:
-8<-
$ sudo ./fluxengine test devices
Detected no devices.
-8<-

Expected result:
The FluxEngine device should be detected

[davidgiven]

I honestly don't know --- sorry. I'll try and reproduce it my end (my hardware's not hooked up right now) and see what happens.

If you could do sudo strace -o log.txt ./fluxengine test devices and then attach the zipped .txt file, that would also be helpful.