Hello Matt, I have not personally tested your libs yet. But looks like you've done a great job in accomplishing everything in jal.
As Vasi, I'm too looking for a data logging application. I might need to create one file each per day so, its not going to be more than 365 per year and I don't need long file names. The process would be to create a new text file daily, append data and then close the file say every hour. Can this functionality be accomplished with your libs or do I have to do lots more additional work ? Sunish On Sat, Jul 31, 2010 at 9:49 AM, mattschinkel <[email protected]>wrote: > 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]<jallib%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/jallib?hl=en. > > -- 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.
