Re: [avr-gcc-list] AVR-newbie need help!

[Joerg Wunsch]

Roger Holmquist <address@hidden> wrote:

> I assume communication should be performed via the Bootloader?

That ought to be possible, yes.

> I tried this:

> avrdude -p ATmega169 -c butterfly -P /dev/tty.usbserial -t -v

That's basically the way to go.

Add three more -v options, and you'll see a trace of the entire
communication.

> There is some lowlevel protocol found in an ATMEL pdf-file, AVR109
> and I assume that or part of it is running in the bootloader?

Actually, the butterfly protocol is not identical but close to AVR109.
AVR109 is the protocol of a standalone programmer that could program
different (external) AVRs, while a bootloader can only program a
single chip.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)