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Put web site onto external EEProm ?
Posted: Tue Nov 02, 2010 5:38 am
by seulater
I have a rather large program that has grown to use 88% of the MOD5270's flash. I can no longer keep my web site internal to the flash area. I was thinking if i can slap an 8 pin SPI EEprom on the board i could FTP my web site files into that. Is there a method to allow me to re-direct the software to pull the site from an SPI EEprom rather than from internal flash ?
I beleive i have seen where guys were using the SD card for this, but i dont have the room on the PCB to add an SD card.
Re: Put web site onto external EEProm ?
Posted: Tue Nov 02, 2010 6:03 am
by Ridgeglider
how about microSD? I think the interface is the same.
Re: Put web site onto external EEProm ?
Posted: Tue Nov 02, 2010 6:13 am
by seulater
i believe your right, but i need to keep the cost down, the Micro SD and socket are going to cost more than say a SST25VF080B 50mhz SPI Flash part, But i do thank you for the idea.
Re: Put web site onto external EEProm ?
Posted: Tue Nov 02, 2010 6:15 am
by v8dave
microSD works with the same SD interface except you don't have the LOCK connection.
I am using the Netburner FAT file drivers with a microSD card on my design.
Dave...
Re: Put web site onto external EEProm ?
Posted: Tue Nov 02, 2010 6:24 am
by v8dave
Are you sure it is that much cheaper?
My local supplier Farnell has the device at $6.54 for the SST25VF080B.
The same supplier has a microSD socket for $1.17 and I can get a 2GB microSD card for $5.50 in the local market.
Works out about the same for me here! Not sure about your market but microSD also means no special drivers to write. Wire it up and away you go.
Dave...
Re: Put web site onto external EEProm ?
Posted: Tue Nov 02, 2010 6:57 am
by Ridgeglider
You may want to consider access time; with any SPI-based storage soln, poor throughput may be an issue, just like it is for the SD cards. If you were designing another interface, improvements might be a goal although any parallel access (either to a dedicated chip or to CF) will probably cost more.
Re: Put web site onto external EEProm ?
Posted: Tue Nov 02, 2010 7:42 am
by seulater
mouser has them for $1.28 single piece.
But i hear what your saying, to just use the SD and go. This is for an industrial application so i will need to have to get an extended temp card and i have been down that road before and they get very expensive,.
Re: Put web site onto external EEProm ?
Posted: Tue Nov 02, 2010 12:45 pm
by seulater
Is the C:\nburn\examples\EFFS-STD example what i am looking for ?
also, is there a list somewhere that explains what all the examples do ?
Re: Put web site onto external EEProm ?
Posted: Tue Nov 02, 2010 1:13 pm
by seulater
never mind, i get it now.
Re: Put web site onto external EEProm ?
Posted: Sun Nov 07, 2010 10:01 am
by Ridgeglider
seulater: a few days ago you said you didn't have room fo an sd card... I came across this thing, maybe you could support a daughter board option?? At $7 in singles maybe workable??
http://www.futurlec.com/Mini_SC.shtml... Kind of hokey, but maybe it works?