John,
This is good news, because not only have you confirmed the cure for the
problem on a second part, but we now know that gdb can erase flash but the
pyjtag utility has a problem with that under some circumstances.
I don't know what we need to do to report this to the maintainers, and I'm
even more clueless about the conditions which `lock out' the part from the
jtag loader.
At least we can make it all work, and everyone who helped put together the
tools for the msp430 be proud of their work!
Sincerely,
David Smead
www.amplepower.com
www.amplepower.net
On Thu, 15 Sep 2005, John Luciani wrote:
I just confirmed that this was the problem.
After finding the msp430-gdbproxy that supports the F169 and running DDD I was
able to erase the flash. I am now able to load programs through the JTAG port
again.
Thanks for your help.
(* jcl *)
www.luciani.org
On 9/14/05, David Smead <sm...@mail.amplepower.net> wrote:
Greetngs,
I had similiar same problem with the F1232 and thought I must have blown
up the chip, although static electricity is not a problem in Seattle.
After the second one `blew' and I hadn't even touched the board, I could
see that the processor was still running the code which had been
previously loaded.
Thinking I'd poke around using gdb I fired up gdb-proxy which connected to
the chip, and I was able to run gdb. Then I tried an erase command and it
worked, and after that I could load programs again via jtag. I repeated
on the first `blown' processor and it also worked.
If this fixes your problem then some kind of bug report should probably be
filed.
Sincerely,
David Smead
www.amplepower.com
www.amplepower.net
On Wed, 14 Sep 2005, John Luciani wrote:
It is definitely the right chip for the build.
I had successfully downloaded elf files, made a minor change to my program and
tried to download the new elf file and received the error message.
(* jcl *)
On 9/14/05, David Brown <da...@westcontrol.com> wrote:
Are you sure you have the right chip on the board, and the right chip
selected for the build? Most of the time when I get this sort of error it's
because I've built the code for an '149 but the card has an '147, or
similar.
Other than that, I've sometimes seen msp430 chips die, and fail to
communicate on the jtag port. Sometimes the chip still runs fine, but I
can't program it or otherwise access the jtag (reseting does not need jtag
communication). The only solution I've found is using a new chip.
mvh.,
David
I am working on an MSP430F169 board and have successfully programmed
it with the Olimex parallel port JTAG cable and pyJTAG until now.
When I run the command msp430-jtag -eEpvr app.elf
I get the error
An error occoured:
Could not write target memory
I am able to reset the MSP430F169 using msp430-jtag -r
performing just an erase with msp430-jtag -e
produces the same error message.
Powering down the MSP430F169 did not help.
Any ideas on how to determine what is wrong with the JTAG flash
programming would be appreciated.
Thanks.
(* jcl *)
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