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Re: [avr-chat] avrdude : chip not responding
From: |
Vincent Trouilliez |
Subject: |
Re: [avr-chat] avrdude : chip not responding |
Date: |
Wed, 31 Aug 2005 14:34:10 +0200 |
Just tried with UISP.
Basically same problem as with avrdude. It doesn't report any error when
asked to wirte to the AVR, but when I read back, nothing has been
written. When I asked uisp to erase the chip, it sent a quick command
(very brief activity on the SPI... I have my scope glued to the MISO
line now ;-), reported no errors, but when I read the entire flash
memory, it had the same weird content as first seen with avrdude, that
is, a strange bit pattern instead of just 'FF' everywhere.
Only positive sign, is that UISP reports my fuse bits as follows, unlike
avrdude (I am starting to feel that I misunderstood the meaning of that
'part' command, maybe it just prints the info from the avrdude.conf
file ?!)
$ sudo uisp -dprog=bsd -dpart=ATmega32 --rd_fuses
Atmel AVR ATmega32 is found.
Fuse Low Byte = 0xff
Fuse High Byte = 0xff
Fuse Extended Byte = 0xff
Calibration Byte = 0xff -- Read Only
Lock Bits = 0xff
BLB12 -> 1
BLB11 -> 1
BLB02 -> 1
BLB01 -> 1
LB2 -> 1
LB1 -> 1
So, all bits are set to one, which makes more sense. Still, I can't
write anything in this bloody, oops, lovely chip ;-)
--
Vince, in great need of help, if just moral support...
Re: [avr-chat] avrdude : chip not responding, Peter, 2005/08/31