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I have posted about this before but now I am finally done with ALFAT. I used LPC2114 chip and programmed it with full FAT file system where you can send SPI or UART(serial) commands to it and it will save FAT files to many kinds of medias SD, MMC, CF and hard disks! The development board can be used for other purposes as it has LPC2114, RS232 level converter, MMC/SD/CF connectors, and IDE header for your hard disk! Thanks for your time, Gus Issa |
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FAT file system
Started by ●September 20, 2004
Reply by ●September 20, 20042004-09-20
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Hi Gus, What are your plans for this? to sell the code royalty free or the programmed IC as it seems to me a bad investment if you're selling the programmed IC when a FAT can be purchased for a pack of beers :D Regards Lasse Madsen -----Original Message----- From: Gus [mailto:] Sent: 20. september 2004 19:49 To: Subject: [lpc2000] FAT file system I have posted about this before but now I am finally done with ALFAT. I used LPC2114 chip and programmed it with full FAT file system where you can send SPI or UART(serial) commands to it and it will save FAT files to many kinds of medias SD, MMC, CF and hard disks! The development board can be used for other purposes as it has LPC2114, RS232 level converter, MMC/SD/CF connectors, and IDE header for your hard disk! Thanks for your time, Gus Issa Yahoo! Groups Links |
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Reply by ●September 20, 20042004-09-20
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implementing simple read file on FAT is not hard but when it comes to having FAT12, FAT16 and FAT32 where you do read and write is not a simple task. Anyway....the idea here is that you don't have to worry about file system stuff as ALFAT will do the job. hmmmmmmm, pack of beer! as far as I know, FAT source code costs $4,000 and up so if you know otherwize please send me a link to that website Gus --- In , "Lasse Madsen" <lasse.madsen@e...> wrote: > Hi Gus, > > What are your plans for this? to sell the code royalty free or the > programmed IC as it seems to me a bad investment if you're selling the > programmed IC when a FAT can be purchased for a pack of beers :D > > Regards > Lasse Madsen > > -----Original Message----- > From: Gus [mailto:gus_is_working@y...] > Sent: 20. september 2004 19:49 > To: > Subject: [lpc2000] FAT file system > > I have posted about this before but now I am finally done with > ALFAT. I used LPC2114 chip and programmed it with full FAT file > system where you can send SPI or UART(serial) commands to it and it > will save FAT files to many kinds of medias SD, MMC, CF and hard > disks! > > The development board can be used for other purposes as it has > LPC2114, RS232 level converter, MMC/SD/CF connectors, and IDE header > for your hard disk! > > Thanks for your time, > > Gus Issa > gissa@g... > Yahoo! Groups Links |
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Reply by ●September 20, 20042004-09-20
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Hi Gus and others...
Have a look at this from PRLLC (http://www.prllc.com/prllc_homemainFlash.htm) it's a 139 USD (ok maybe a little more than a pack of beer but certainly dirt cheap) I've used it with both ARM and AVR with much success with will both read and write FAT12 and FAT16 There really isn't any need for FAT 32 in an embedded application using either AVR or LPC ARM I have never seen a place where it was necessary to log over a GB of data. FAT32 reading would be nice tough but then again even my brand new Panasonic video camera doesn't support FAT-32 so why bother :-) Gus I think you have a nice application but make your product a source code solution and at a price like PRLLC (maybe a few hundred more if it's really that great) because a lot of people my self included wont purchase an IC solution where all you could settle with was in fact the source code. I've been an embedded designer and programmer for more than four years now and educated electronics mechanic of background the only things I purchase (IC) is processor, RF integrated IC's and such things that cant be made by one self. I would think around 350$ was adequate for code like that but maybe you cant sell it to that price and that's ok. That's just my thought Best regards and I hope you will make fortunes on your product :o) Lasse Madsen -----Original Message----- From: Gus [mailto:] Sent: 20. september 2004 20:01 To: Subject: [lpc2000] Re: FAT file system implementing simple read file on FAT is not hard but when it comes to having FAT12, FAT16 and FAT32 where you do read and write is not a simple task. Anyway....the idea here is that you don't have to worry about file system stuff as ALFAT will do the job. hmmmmmmm, pack of beer! as far as I know, FAT source code costs $4,000 and up so if you know otherwize please send me a link to that website Gus --- In , "Lasse Madsen" <lasse.madsen@e...> wrote: > Hi Gus, > > What are your plans for this? to sell the code royalty free or the > programmed IC as it seems to me a bad investment if you're selling the > programmed IC when a FAT can be purchased for a pack of beers :D > > Regards > Lasse Madsen > > -----Original Message----- > From: Gus [mailto:gus_is_working@y...] > Sent: 20. september 2004 19:49 > To: > Subject: [lpc2000] FAT file system > > I have posted about this before but now I am finally done with > ALFAT. I used LPC2114 chip and programmed it with full FAT file > system where you can send SPI or UART(serial) commands to it and it > will save FAT files to many kinds of medias SD, MMC, CF and hard > disks! > > The development board can be used for other purposes as it has > LPC2114, RS232 level converter, MMC/SD/CF connectors, and IDE header > for your hard disk! > > Thanks for your time, > > Gus Issa > gissa@g... > Yahoo! Groups Links Yahoo! Groups Links |
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Reply by ●September 20, 20042004-09-20
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At 10:08 PM 9/20/04 +0200, you wrote: >Have a look at this from PRLLC >(http://www.prllc.com/prllc_homemainFlash.htm) it's a 139 USD (ok maybe >a little more than a pack of beer but certainly dirt cheap) These guys may win a prize for obscure licensing. It's not what they say, it's that they don't say anything (that I could find) about what you are actually purchasing a license to. If it's a license for linking into your projects and distributing as many copies as you want it's certainly a good price. If it's for a single embedded copy the toll could add up rather quickly. Any idea what the license is? Robert " 'Freedom' has no meaning of itself. There are always restrictions, be they legal, genetic, or physical. If you don't believe me, try to chew a radio signal. " Kelvin Throop, III |
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Reply by ●September 20, 20042004-09-20
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Hi Robert It's a once pay license... once you have paid for the software you are free to use it. /* Software License The use of Progressive Resources LLC FlashFile Source Package indicates your understanding and acceptance of the following terms and conditions. This license shall supersede any verbal or prior verbal or written, statement or agreement to the contrary. If you do not understand or accept these terms, or your local regulations prohibit "after sale" license agreements or limited disclaimers, you must cease and desist using this product immediately. This product is C Copyright 2003 by Progressive Resources LLC, all rights reserved. International copyright laws, international treaties and all other applicable national or international laws protect this product. This software product and documentation may not, in whole or in part, be copied, photocopied, translated, or reduced to any electronic medium or machine readable form, without prior consent in writing, from Progressive Resources LLC and according to all applicable laws. The sole owner of this product is Progressive Resources LLC. Operating License You have the non-exclusive right to use any enclosed product but have no right to distribute it as a source code product without the express written permission of Progressive Resources LLC. Use over a "local area network" (within the same locale) is permitted provided that only a single person, on a single computer uses the product at a time. Use over a "wide area network" (outside the same locale) is strictly prohibited under any and all circumstances. Liability Disclaimer This product and/or license is provided as is, without any representation or warranty of any kind, either express or implied, including without limitation any representations or endorsements regarding the use of, the results of, or performance of the product, Its appropriateness, accuracy, reliability, or correctness. The user and/or licensee assume the entire risk as to the use of this product. Progressive Resources LLC does not assume liability for the use of this product beyond the original purchase price of the software. In no event will Progressive Resources LLC be liable for additional direct or indirect damages including any lost profits, lost savings, or other incidental or consequential damages arising from any defects, or the use or inability to use these products, even if Progressive Resources LLC have been advised of the possibility of such damages. */ -----Original Message----- From: Robert Adsett [mailto:] Sent: 20. september 2004 23:18 To: Subject: RE: [lpc2000] Re: FAT file system At 10:08 PM 9/20/04 +0200, you wrote: >Have a look at this from PRLLC >(http://www.prllc.com/prllc_homemainFlash.htm) it's a 139 USD (ok maybe >a little more than a pack of beer but certainly dirt cheap) These guys may win a prize for obscure licensing. It's not what they say, it's that they don't say anything (that I could find) about what you are actually purchasing a license to. If it's a license for linking into your projects and distributing as many copies as you want it's certainly a good price. If it's for a single embedded copy the toll could add up rather quickly. Any idea what the license is? Robert " 'Freedom' has no meaning of itself. There are always restrictions, be they legal, genetic, or physical. If you don't believe me, try to chew a radio signal. " Kelvin Throop, III Yahoo! Groups Links |
Reply by ●September 23, 20042004-09-23
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Gus, Is your dev board available? Is the ALFAT software available? I require compact flash read/write only (no need for fat32) Please advise, Kind Regards, Peter --- In , "Gus" <gus_is_working@y...> wrote: > I have posted about this before but now I am finally done with > ALFAT. I used LPC2114 chip and programmed it with full FAT file > system where you can send SPI or UART(serial) commands to it and it > will save FAT files to many kinds of medias SD, MMC, CF and hard > disks! > > The development board can be used for other purposes as it has > LPC2114, RS232 level converter, MMC/SD/CF connectors, and IDE header > for your hard disk! > > Thanks for your time, > > Gus Issa > gissa@g... |
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Reply by ●September 23, 20042004-09-23
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I have read parts of the thread on FAT file system, and feel some moral responsibility to raise a warning. If you're using FAT as a method of storing/retrieving non-critical data, fine. Sometimes you need to share data with Micriosft PCs and don't have much choice. If, however, you're using FAT to store critical data (ie FAT fails, then system fails), be warned that FAT is terrible at this job and you should consider some other file system strategy. According to http://www.datalight.com/product_detail.asp? p_id"&archive=0 up to 80% of product failures in devices using FAT can be blamed on FAT file system corruption. Of course they have something to sell, so one should treat their view with some suspicion. [Having written a log-structured file system, I disagree with most of the things they say about those too]. Still, I am aware of FAT causing significant problems for many systems. IMHO use something other than FAT if you can. -- Charles |
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Reply by ●September 23, 20042004-09-23
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Hi Charles I've been working with FAT for a long time and it really isn't that bad... of cause there's a lot of ways to go bad (messing up allocation tables etcetera) but Microsoft Scandisk (and others) can almost always save the most damaged errors I've tried to make both on purpose and by accident (bad code) and if you know how to handle the FAT you can use WinHex to make a read out of the good portions... also there's a lot of counter measures build into FAT for instance there's two (or more) allocation tables so that if one of them goes bad the other one (which is constantly updated) should be able to replace it with out user intervention I personally think you won't have a problem with writing/reading to/from FAT if you have a way of un mounting the file system before you remove the media and have a Power fail circuit that detect under voltage on the main supply and un mounts the FAT automatically ... (been there done that, and working on second year in real life :) Best regards Lasse Madsen -----Original Message----- From: embeddedjanitor [mailto:] Sent: 23. september 2004 22:17 To: Subject: [lpc2000] Re: FAT file system ==>warning I have read parts of the thread on FAT file system, and feel some moral responsibility to raise a warning. If you're using FAT as a method of storing/retrieving non-critical data, fine. Sometimes you need to share data with Micriosft PCs and don't have much choice. If, however, you're using FAT to store critical data (ie FAT fails, then system fails), be warned that FAT is terrible at this job and you should consider some other file system strategy. According to http://www.datalight.com/product_detail.asp? p_id"&archive=0 up to 80% of product failures in devices using FAT can be blamed on FAT file system corruption. Of course they have something to sell, so one should treat their view with some suspicion. [Having written a log-structured file system, I disagree with most of the things they say about those too]. Still, I am aware of FAT causing significant problems for many systems. IMHO use something other than FAT if you can. -- Charles Yahoo! Groups Links |
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Reply by ●September 24, 20042004-09-24
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On Fri, Sep 24, 2004 at 01:37:50AM +0200, Lasse Madsen wrote: > make a read out of the good portions... also there's a lot of counter > measures build into FAT for instance there's two (or more) allocation > tables so that if one of them goes bad the other one (which is > constantly updated) should be able to replace it with out user > intervention As far as I remember M$ system software does not use the second table in case of damage of the otner one. Only special software (e.g. norton disc doctor) can use it to repair your fs (maybe scandisk or chkdsk also). You really need user invention in case of failure in the first table. Matthias |
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