[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[avrdude-dev] avrdude >= 5.4, butterfly protocol and byte mode devices
From: |
Jens Wilhelm Wulf |
Subject: |
[avrdude-dev] avrdude >= 5.4, butterfly protocol and byte mode devices |
Date: |
Sat, 21 Mar 2009 00:56:04 +0100 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
Hi,
some time ago I implemented a programmer based on the one of Klaus Leidinger.
It uses block transfers (butterfly style) in any case, even if a byte mode
device is connected. It is described (including firmware, hardware, special
features, software and the current problems with avrdude) on
http://kisocd.sourceforge.net/en/progelec/avrdev/readme.htm
Since version 5.4, avrdude refuses to do block transfers for byte mode
devices -- for my programmer, consequences are:
- byte mode devices can't be programmed anymore, as it does not support
byte transfer ('c' command)
- even if it would support byte transfer, that would be much slower than
block transfer (because of usb<->serial converter)
- I have to stick to version <=5.2 or work around the problem by patching
avr.c or avrdude.conf
Now version 5.6 added block mode to avr910, but as far as I understand that,
it will still refuse to use block mode on byte mode devices. Why?
Are there plans to allow block mode transfers for any device?
Best regards,
Jens
- [avrdude-dev] avrdude >= 5.4, butterfly protocol and byte mode devices,
Jens Wilhelm Wulf <=