Repost with subject! Use of SD-card to update Prop. program

TonyWaite

Hi,

I am working on a design for a Propeller datalogger application, with the aim that the user should be able to load updated versions of the main program simply by swapping out the micro-SD card.

The Obex shows a variety of possibilities for implementing such a function; some using disk OS's.

Assuming that this idea is sensible, I would welcome the collective advice of the Forum on the easiest/fastest route that they they would recommend!

Thank you,

Tony Waite

Peter Jakacki

Can you delete the other thread then?

*Peter*

Cluso99

PropDos and PropCmd is probably a good place to start since that can load a prop binary and run it. You will need extra code to place it eeprom though.

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Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade, RetroBlade,·TwinBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: Micros eg Altair, and Terminals eg VT100 (Index) ZiCog (Z80) , MoCog (6809)
· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBladeProp is: www.bluemagic.biz/cluso.htm

Peter Jakacki

I have a datalogging application where I simply look for a FIRMWARE.BIN file on the card at power-up and if it exists I do a byte by byte comparison with the first 512 bytes of EEPROM. If there is a difference I read in the firmware file and program the EEPROM directly. It's a fairly primitive approach or what I would call quick and dirty, but it works.

When I have time to look at it properly I will have a resident bootloader in EEPROM that will load the firmware file directly. That way then there is no way I can lose the bootloader especially if i have a jumper on the write-protect of the EEPROM.

*Peter*

P.S. Welcome to the Propeller forum Tony

Post Edited (Peter Jakacki) : 9/18/2009 12:25:38 PM GMT

TonyWaite

Thank you for the very helpful replies.

Searching the PropDOS threads has now given me more of the background. So thank you Cluso99. (I too
liveaboard -a 40ft quarterdeck cruiser!)

And I like Peter's 'quick comparison' method of managing the image on the SD-card too.

The Propeller is wonderfully addictive ...

T o n y

Chris Savage

The duplicate thread has been removed. Once a reply to a thread has been posted the forum member can no longer delete the original. Always remember that you can use the pencil icon to edit your post and correct subject line issues. Take care.

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Chris Savage

Parallax Engineering
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mctrivia

I have boot loader in obex

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propmod_us and propmod_1x1 are in stock. Only $30. PCB available for $5

Want to make projects and have Gadget Gangster sell them for you? propmod-us_ps_sd and propmod-1x1 are now available for use in your Gadget Gangster Projects.

Need to upload large images or movies for use in the forum. you can do so at uploader.propmodule.com for free.

TonyWaite

Thank you McTrivia!

This looks like a perfect match ...

T o n y