Mark,
1. did you try to burn in a blinking demo or something like that to
verify a) your hardware b) your programmer?
2. did you program flash as well as eeprom?
3. does your uart connectivity works? (try to connect rx and tx at
the atmega side together (disconnect the chip) and you have to see
ech
Marc,
I found basically 3 reason for a non-working serial line
- wrong fuse settings. The controller works with a different
clock as you think it does, which lead to different baud
rates. The result is some garbage characters on the wire.
The only solution is to use... the right settings.
Thanks for that suggestion! Obvious next step. As it turns out, there's
nothing "stable" coming out of the TXD(pin 3) - in fact on some resets it
latches to vcc... ? although I also got a nice pulse train on another reset
- but mostly I see nothing! So need to investigate those issues. I
assemble
