RE: [Gumstix-users] Robostix

[Jay P. <ja...@bl...>]

Hi Dave,
	That's what is confusing me.  I read through the wiki and followed
the directions.  I am uploading the i2c-bootloader hex file and it goes
through no problem.  Uisp works perfectly, but when I try to execute
i2c-load that is when it gives me the error message. I'll try everything
again tonight.

Thanks,
-Jay

-----Original Message-----
From: gum...@li...
[mailto:gum...@li...] On Behalf Of Dave Hylands
Sent: Sunday, March 19, 2006 10:33 PM
To: gum...@li...
Subject: Re: [Gumstix-users] Robostix

Hi Jay,

> > So at this point, just the bootloader is loaded in flash. The Red LED
> > on the robostix should be flashing once every half second.
> If my memory isn't failing me I believe it was either sitting solid red,
or
> was flashing 5 or so times a second after issuing the pulse reset command.

So there are 3 disctinct blink patterns, for 3 distinct modes.

i2c Bootloader Mode - Blinks twice per second at regular 1/2 second
interval. This means that you're in bootloader mode. Once in
bootloader mode, it will stay that way until commanded to do something
else. If no program is loaded into the main flash, then bootloader
mode is entered automatically.

Countdown Mode - Blinks five times per second at regular 1/5 second
interval. This means that the bootloader has detected that a program
is loaded into flash. It will stay in countdown mode for the
configured number of seconds and if the bootloader-info command is
received, it will go into bootloader mode, otherwise it will transfer
to the program in flash.

i2c-io Mode - Blinks twice per second, as two fast blinks followed by
a longer pause. This is when the i2c-io program is actually running.

So, if the bootloader and i2c-io.hex are loaded properly, the
bootloader should be in countdown mode for five seconds, and then in
i2c-io mode.

If you use uisp to download the i2c-io.hex file then the red led will
come on and not blink (this is because i2c-io.hex uses some of the
functionality in the bootloader. Downloading i2c-io.hex using uisp
wipes out the bootloader.

--
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/


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