This simple utility demonstrates Proof of Concept for reading data from modern WITRN USB-meters such as U3, U3L, A2, and C4 (tested). A2L and C4L can also be supported theoretically but I don't have hardware for testing. Is there no any UI yet, but it is possible in the future.
Sample output:
Connect your device and press Enter
No kernel driver attached
Claimed device
Press Enter to stop reading
packets | rectime | uptime | V A | D+ D-
23755 | 0:03:57.074 | 3:10:55.199 | 5.158 0.004 | 2.717 2.706
Good bye!
Note! For Windows users, if you see message Device not found! when device is
actually connected, try use zadig
utility and replace the default driver for your WITRN device to libusb-*.