Identifying different Bpods for matching calibration files

Chloe_L

Hello, I'm interested in running multiple Bpods simultaneously using different Matlab instances. Each Bpod will have to be calibrated individually, but it looks like only one calibration file exists by default. I'd like to adjust the code so that each state machine has its own liquid calibration file associated with it. I was initially thinking of identifying each machine by its serial port (e.g. load up COM3_LiquidCalibration.mat on startup of the COM3 Bpod), but it seems like the port name will change if the machine is moved and gets plugged into a different USB port. Is there any sort of unique identifier intrinsic to each individual state machine, and if not, is there a good way to go about making one?
Thanks!

Josh

Hello Chloe,

Unfortunately the machines do not have unique identifiers in firmware.

For State Machine r2, r2.5 and r2+, Windows should keep the COM port number the same regardless of which USB port it is plugged into. On those state machine models, you can also get the Teensy's serial number with the following command for a state machine on port COM5:

[status, msg] = system('C:\Users\UserName\Documents\Bpod_Gen2\Functions\"Firmware Update"\tycmd reset -B "@COM5"')

This will briefly reboot the state machine, so don't run it while it is connected. The msg string will show something like:

reset@13710960-Teensy Resetting board '13710960-Teensy' (Teensy 4.1)

You can parse the string to get 13710960, the Teensy board's serial number.

-Josh