Re: [Libphidget-devel] serial numbers

[<fit...@ph...>]

No maximum size.  It's defined in hardware as a string, so it would be the
maximum length of a string in USB.  Probably 255 bytes or something.  In
Windows, I'm representing the serial number with a long.

Vadim, we fetch a string, which is always string descriptor #3, for serial
number, and then we parse this string to get the number.  This is the asm
declaration for the string.

USBStringDescription3:
     db Ch		; Length, db is a byte
     db 03h		; 3 is a string descriptor
     dsu "00001";	; string, defined in Unicode.

So you see that I'm using 5 digits only.  There is nothing to prevent me
from stretching this when I reach 99,999.  Be nice if that change didn't
break code.

Chester


>
>
> For USB devices (phidget in particular) what is the maximum size of a
> serial number?
>
>
>
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