(Better subscribe to the list. Many people here don't Cc the author
when replying.)
docksider <
docksider@...> wrote:
> I have tried to mimic the settings that work in AVR Studio but not
> succeeded, i can't figure out what if anything the -i and -B flags
> does to the JTAG clock.
That makes me think you're using AVRDUDE to program the device(s).
What's your exact commandline then? I have successfully programmed
boards with two chained AVRs in the past. Remember that each AVR
shifts by four bits, so you need
-X jtagchain=0,1,0,4
on one device, and
-X jtagchain=1,0,4,0
on the other one.
I didn't observe any specific clock issues, as when programming
through JTAG, everything inside the AVR is clocked by the JTAG clock
so it's independent of the main clock frequency.
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
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