AVR-Chat

Hi David,

For me I have always found that the AVRISP needs a really solid 5 volts
supply when it is updated. I have found that the best way for me was to
connect it to an STK500. It always programs fine. Last I did was 4.12 ...
worked fine with the STK500.

Jim

----- Original Message ----- 
From: "David Kelly" <dkelly@hiwaay.net>
To: <AVR-Chat@yahoogroups.com>
Sent: Thursday, March 16, 2006 1:19 PM
Subject: [AVR-Chat] AVRISP Firmware Update Failed


> I have a collection of 3 AVRISP's in various states of failure. All got
> this way when AVR Studio asked to update the firmware and was allowed
> to. Not sure if I've ever seen it succeed.
>
> Yesterday one had 2.04 and AVR Studio wanted to put 2.07 in it. Failed.
>
> Then the manual procedure failed many times as well.
>
> Somehow it worked this morning. I can't figure out what I did "right"
> that I can get the other 2 working again.
>
> Have tried powering the AVRISP directly off 3.3 and 5.0 regulated power
> so as to ensure none of the other ISP connector pins were wiggling.
>
> Tried variations on when I short the two holes and when I release. If I
> have the "AVR Prog..." window open and the Program button is grayed,
> short the holes and a moment later the Program button is enabled. Have
> tried programming with the holes shorted. No change. Altho that might be
> how one of my AVRISPs got to its "totally trashed" condition.
>
> Usually I can short the two holes on the AVRISP and the "AVR Prog..."
> tool accepts what is connected and I can attempt to write new firmware.
> But not at the moment. Relaunch of AVR Studio 4.12 build 468 doesn't seem
> to help. Reboot of computer doesn't seem to help. WinXP.
>
> When "AVR Prog..." likes what it sees on the end of the serial cable the
> problem is "address: 0x0000, Expected: 0xcf3f, Found: 0xffff"
>
> Sat at a different computer with a version 4.11 of AVR Studio and got
> pretty much the same. Altho that computer will launch "AVR Prog..."
> while my usual computer with the latest won't at the moment.
>
> I see a 6 pin ISP header on the AVRISP. Presumably this will let me use
> a good AVRISP to write code in a problem AVRISP?
>
> What is it that I'm missing? Makes me long for good old Freescale and
> P&E tools.
>
> -- 
> David Kelly N4HHE, dkelly@HiWAAY.net
> ========================================================================
> Whom computers would destroy, they must first drive mad.
>
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