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Re: [avrdude-dev] Before a release...
From: |
Michael Mayer |
Subject: |
Re: [avrdude-dev] Before a release... |
Date: |
Wed, 19 Nov 2003 23:17:48 +0100 |
User-agent: |
Mutt/1.5.4i |
On Wed, Nov 19, 2003 at 16:38:45 -0500, Brian Dean wrote:
> why is special support for the butterfly when using the avr910
> necessiary? Doesn't it just have a 6-pin ISP programming header?
> What's special about the butterfly - does it come preloaded with a
> special boot loader or something that the avr910 knows how to talk to?
Sorry, I forgot to clearify these facts in my last mails.
Yes, the butterfly has the ISP header and the documentation states it is
possible to connect it to a AVR910 as usual. Unfortunatly I don't have
access to a AVR910, so I didn't checked it out.
But the Butterfly comes with a integrated RS232 and a preloaded boot loader.
This boot loader claims to be AVR910 compatible but in fact it uses a
"extended subset" of commands for communications. So it is necessary to do
some checks first and use some different commands (Blockmode instead of
singe byte access). Maybe I should write a small README to point out the
differences.
It would have been possible to implement a new programmer type called
"butterfly" to deal with the modified protocol, but the differences are
quite small (two additional functions and a few conditional branches).
Michael
- [avrdude-dev] Before a release..., E. Weddington, 2003/11/19
- Re: [avrdude-dev] Before a release..., Brian Dean, 2003/11/19
- Re: [avrdude-dev] Before a release..., Michael Mayer, 2003/11/19
- Re: [avrdude-dev] Before a release..., Michael Mayer, 2003/11/19
- [avrdude-dev] Butterfly (was: Before a release...), Jan-Hinnerk Reichert, 2003/11/19
- Re: [avrdude-dev] Butterfly (was: Before a release...), Michael Mayer, 2003/11/20
- Re: [avrdude-dev] Butterfly (was: Before a release...), Jan-Hinnerk Reichert, 2003/11/20
- Re: [avrdude-dev] Butterfly (was: Before a release...), E. Weddington, 2003/11/20
- RE: [avrdude-dev] Butterfly (was: Before a release...), Larry Barello, 2003/11/20
- Re: [avrdude-dev] Butterfly (was: Before a release...), Sander Pool, 2003/11/20
- Re: [avrdude-dev] Butterfly (was: Before a release...), Michael Mayer, 2003/11/27
- Re: [avrdude-dev] Butterfly (was: Before a release...), Jan-Hinnerk Reichert, 2003/11/27