[Prism54-devel] USRobotics USR5422

[Sebastien B]

Hello,
The eeprom_get_address_width() function probably returned a bogus value, as 
the program doesn't display anything about the address witdth (it's the first 
thing it does after the USB subsystem is initialized).
It must be because the endpoint adresses are incorrect, if properly interfaced 
the NET2280 won't return an unhandled value there.
Apart from examining snooped USB logs, I don't know any other way to find out 
the endpoint adresses than trial and error, so can you attempt to dump the 
EEPROM by trying each endpoint on your device (see lsusb output) ?
Change the line 
#define CFGIO 0x0d
in the source code to the endpoint address you want to test, recompile, and 
try until it works. Power-cycle your device between tries as the bogus data 
the program will send is more than likely to crash the dongle.
Once we have the EEPROM dump, we should be able to figure out where other 
endpoints are.
Yes, please post the .SYS file from the Windows driver.
But don't expect your device to work in a short time, we are already in big 
trouble with "normal" devices, and yours looks especially exotic.
Regards,
Sebastien