I can put a constant in my lib for using long/short file names because of the patent. I don't quite understand if reading long file names is ok. I know writing them is not ok.
The patent says "long AND short filenames", but the work around uses "long OR short filenames" or something like that. I was planning to read more about the technical stuff. Here is some detail on the work around http://lwn.net/Articles/338981/ I heard that the royalty fee for FAT32 is $0.50 per product sold. Short file names is fine for logging data, but it is not so good for a product user. 8 letters is not really enough to describe something. Matt. On Jul 30, 11:37 pm, William <[email protected]> wrote: > Hi Matt, > > OK, I read your link - indeed there is an issue with 'long file > names'. However the elm-chan provides 'long file names' as a separate > feature, so if you stay with short file names, you should be OK. > Please read his statements about this here: > > http://elm-chan.org/fsw/ff/en/appnote.html > > Thank you, > > William > > On Jul 30, 6:40 pm, mattschinkel <[email protected]> wrote: > > > William, Read > > this:http://www.microsoft.com/whdc/system/platform/firmware/fatgendown.mspx > > > You can read about MS vs TomTom > > > This VFAT does some things to get around the patent. Here is a good > > description.http://www.desktoplinux.com/news/NS4980952387.html > > > Vasi, my lib is quite simple to use and user friendly :) By changing > > the constants in my sample, I can get my fat32 to run at 6594 program > > memory, and 399 ram. This is small enough for any 18F. > > > Matt. > > > On Jul 30, 3:17 pm, William <[email protected]> wrote: > > > > I don't think there is any royalty issue with fat32? I can mount such > > > volumes in Ubunu/Linux without any royalty fees and create files and > > > filenames. > > > > Fat32 files are not necessarily contiguous. So be careful if you want > > > to try and write-over an existing fat32 file with a low-level > > > library. Check out Elm-Chan's petite library -- he made a nice GPS > > > data logger for Atmel/Arduino cpu. His full-featured library fits > > > on my 18F parts (in C), so should be doable in JAL also. > > > > William -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
