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RE: [avr-gcc-list] stumped by my ATmega48 (again)


From: Gavin Jackson
Subject: RE: [avr-gcc-list] stumped by my ATmega48 (again)
Date: Tue, 9 Oct 2007 08:43:34 +1300

>> Can anyone explain how the reset line is supposed to work in relation
>> to the ISP?  What's the standard procedure for testing your code
while the
>> ISP is still attached?

>There are fuses that determine whether the reset pin is actually used
as a
>reset, or as an I/O, or as a debugWire pin. If the hex file you got
>included fuse settings that were putting the chip into a mode in which
the
>reset line was just a regular I/O or debugWire pin, the low level you
were
>applying wouldn't matter.

It's unlikely that the reset line was disabled since the ISP uses this
to program the chip. Disable reset and you'll need to use the high
voltage
parallel mode to save the device.

Regards

Gavin



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