hi,
I'm using an AVR Dragon connecting via USB to a mac os (macports version of
avarice). The Dragon connects to a 10-pin header I made that goes to the
TCK/TMS/TDI/TDO/VCC/GND/RESET pins of an atmega32 chip.
I can program the chip using avrdude over the same AVR Dragon and hardware
setup.
But when I run avarice, it will successfully read the fuses, but then it hangs
after "Enabling on-chip debugging"... after a period of time it says "JTAG ICE:
Cannot synchronise". What am I doing wrong? I've scoured google but come up
empty
Here's the output. You can see that it properly reads the fuses, and I can
verify that if I change the fuses, it will write them back (setting the OCDEN
fuse). But after writing the fuses, it gets stuck. Doesn't matter if I use the
-R reset option or not.
(I can send the -d detailed output if needed)
thanks in advance
Dann
$ avarice -r --dragon --jtag usb :4242 -R
AVaRICE version 2.10, Feb 4 2011 15:13:01
Defaulting JTAG bitrate to 250 kHz.
JTAG config starting.
Found a device: AVRDRAGON
Serial number: 00:a2:00:01:32:89
Reported JTAG device ID: 0x9502
Configured for device ID: 0x9502 atmega32
JTAG config complete.
Reading Fuse Bytes:
Extended Fuse byte -> 0xff
High Fuse byte -> 0x1f
Low Fuse byte -> 0xff
Preparing the target device for On Chip Debugging.
Disabling lock bits:
LockBits -> 0xff
Enabling on-chip debugging:
Extended Fuse byte -> 0xff
High Fuse byte -> 0x1f
Low Fuse byte -> 0xff
JTAG ICE: Cannot synchronise
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