On Sat, Nov 5, 2011 at 2:32 PM, Joerg Wunsch <[email protected]> wrote: > (Better subscribe to the list. Many people here don't Cc the author > when replying.) > I accidently sent the first nessage from wrong address, sorry about that!
> docksider <[email protected]> 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 can't get the exact commandline as we speak but it was something like: avrdude -p m16 -U flash:w:test.hex -c jtag2 -X jtagchain 0,1,0,4/1,0,4,0 one avr had zeros as signature so i needed to add -F, both works fine tho, tried moving them around and tested the code on both. Worth mentioning is that it finds the devices perfectly, which it can't when the bb/ba is wrong. > 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. This is what i thought aswell, > > -- > cheers, J"org .-.-. --... ...-- -.. . DL8DTL > > http://www.sax.de/~joerg/ NIC: JW11-RIPE > Never trust an operating system you don't have sources for. ;-) This is me trying to break loose from the University's Windows computers :) _______________________________________________ AVR-chat mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/avr-chat
