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RE: [avr-gcc-list] Fw: Make Your Own JTAGICE box

From: Lee Davies
Subject: RE: [avr-gcc-list] Fw: Make Your Own JTAGICE box
Date: Thu, 24 Apr 2003 15:25:00 +0100

I've discovered the reason the original boot loader program didn't work with
AVRPROG, was that I'd set the fuses incorrectly in AVR Studio. After
changing the fuses setting (with boot area from 0x1C00), AVRPROG
successfully programmed the DIY JTAGICE board :)

Many thanks for putting up with my dribble.


-----Original Message-----
From: Larry Barello [mailto:address@hidden
Sent: 24 April 2003 15:10
To: Lee Davies; 'AVR GCC List'
Subject: Re: [avr-gcc-list] Fw: Make Your Own JTAGICE box

Atmel could have easily encoded the file such that only the Astudio
JTAG interface knows how to download it.  Since the JTAG interface
only communicates via serial line, it stands to reason that it is
looking for some sort of prompt from the JTAGICE unit.  The bootloader
that was given probably fakes out the JTAGICE prompts, thus prompting
Astudio to "upgrade" the unit.

I am sorry if I lead you in the wrong direction w/regard to
programming.  The original email & web page implied loading the file
into STK500 program and downloading, which, sounded like a straight
binary file. I have not attempted to download the file with the
STK500, so, you were the one to find out it wasn't that simple.
However, it *is* simple enough to download the boot loader image given
on that web-page, then "upgrade" the software, and have a functional
unit.  Again, I have not actually done this so you are still leading
the way :)

Good luck!

----- Original Message -----
From: "Lee Davies" <address@hidden>
To: "'Larry Barello'" <address@hidden>; "'AVR GCC List'"
Sent: Thursday, April 24, 2003 6:41 AM
Subject: RE: [avr-gcc-list] Fw: Make Your Own JTAGICE box

> I tried using the following command to convert the binary file into
> format:
> srec_cat -o upgrade.hex -Intel upgrade.ebn -binary
> However when I programmed my self built JTAGICE, AVRstudio failed to
find it
> :-(
> I could post the converted hex file to determine whether the
hardware is at
> fault or the bin->hex conversion. However I'm not sure whether
that's legal
> ????
> Thanks
> Lee
> -----Original Message-----
> From: Larry Barello [mailto:address@hidden
> Sent: 24 April 2003 14:03
> To: Lee Davies; AVR GCC List
> Subject: Re: [avr-gcc-list] Fw: Make Your Own JTAGICE box
> Hmm, it sounds like making the bootloader and using that technique
> load the JTAG ice will be required.  Follow the direction on the
> original email.  It provides the binary to load as the bootloader.
> ----- Original Message -----
> From: "Lee Davies" <address@hidden>
> > Hello,
> >
> > I've tried programming the device using AVRPROG, however the
> failed
> > to verify.
> >
> > I've also tried programming the device using an STK500, however
> Studio
> > complains the file is not a valid HEX file.
> >
> > Has anybody else tried programming the device using the SKT500 ?
> >
> > If so, is any BIN->HEX conversion required ?
> >
> > What is the preferred conversion package ?
> >
> >
> > Any help would be appreciated,

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