[En-Nut-Discussion] Diagnosing an Ethernut

[Ole Reinhardt]

Hi,

Might you have set any lock fuses? In this case it could be possible
that you set the write lock bit. In this case you manualy have to
configure uisp (don't know if you can, but with sp12 you definatly can)
to the ATMega and then erase the whole chip. This will set back the
write lock fuse.

Even worse, you could have disabled isp programming at all. In this case
you only can reenable the isp interface with a JTAG interface... (e.g.
JTAG-ICE with AVRStudio).

Bye,

Ole


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