multiple OE board with new FPGA is not working

[fattorilab]

Hello, I just received two new OE boards with the new FPGAs. Individually everything works, but if I attach the two boards at the same time and load them on OE gui the second one is not detected. If I unplug the second one's usb and plug it back in, it sometimes detects it, but then crashes when I press run. The two boards are correctly recognized by windows. If I start 2 oephys gui istances with linked to each istance a single one board, everything works, but I cannot run them by a single process. I have two other boards with old FPGA and they work properly together, I can add a third of the new ones, but not a fourth (the second with new FPGA). I attach some screenshots
cheers

Matteo

edited, tried also with another pc, same problem

[jsiegle]

@aacuevas can you think of the reason why this wouldn't work with the new boards?

[aacuevas]

Probably some simple bug. The fact that it works on different processes means that the underlying library is doing its job well enough. Probably some weird shared resource on the GUI. I will debug it looking at the error codes.

[fattorilab]

Hi, any news about a possible bug fix? it is quite annoying to have to use 2 separate pc to collect all the data. thanks!

[aacuevas]

Hi,

Yes, we discovered it is an issue with the low-level driver for the usb chip we are using, which does not report a device as already opened when querying its state on the same process that opened it, even if the instance or even thread is different.

A fix, rewriting the initialization sequence working around this previously unknown limitation, is in the works.

[aacuevas]

This should be fixed now in the latest version of the plugin. Please check if it is the case.