I'm using the mspgcc toolchain with a TI USB FET. I've been struggling
to get the toolchain to communicate with a TI MSP-EXP430FG4618
experimenters board (this is the board with both a 4608 and 2013
processors). The scenario I have is as follows;
If I try and attach to either of the processors via their respective
JTAG connectors using msp430-gdbproxy, MSP430_Identify advises that
either it can't access the device, or the device is not supported.
The same toolchain will happily connect to a 2131 or 439 I've tried it
with (both on simpler header boards).
The msp430 and hil dll's have been updated to the latest available from
TI. However, I doubt that there is any problem with the specific device
variants, as neither of these is that new.
Switching the TI FET to an Olimex JTAG interface gives the same results
(still with the mspgcc toolchain).
I've reinstalled the original IAR software, but this doesn't want to
talk to the board either. Similarly with Olimex's software talking
through the Olimex JTAG.
This would all seem to imply that the problem is with the experimeters
board itself rather than the toolchain, but this also doesn't gell. This
JTAG interfaces to this board were working about 6 weeks ago. Other
priorities, so it was parked, but now the RS232 interface on this board
would be quite useful. Since then, nothing has been touched with the
Experimenters board, but I've done a lot of playing with the various
toolchains as part of getting the Olimex JTAG working. The 2013 is
definitely running (its got some code loaded that blinks a led
ocassionally). Even if I had somehow managed to damage something, it
seems highly unlikely that it would affect both processors on the board
the same. I'm suspicious that there is something related to the JTAG
interfaces on this board, but that's a real guess.
I have considered the possibility that I've blown the JTAG fuses, but
again, I'd imagine that it would be hard to do this accidentally, and to
both chips? Its not something I've played with at all. How does a chip
with a blown fuse appear externally?
Any other ideas or things I could look at?
Regards
Andrew
